I. Data Set Descriptors A. Title: Merryl Alber. 2016. Long-term Mollusc Population Abundance and Size Data from the Georgia Coastal Ecosystems LTER Fall Marsh Monitoring Program. Georgia Coastal Ecosystems LTER Data Catalog (data set INV-GCES-1610; http://gce-lter.marsci.uga.edu/data/INV-GCES-1610) B. Accession Number: INV-GCES-1610 C. Description 1. Originator(s): Name: Merryl Alber Address: Dept. of Marine Sciences University of Georgia Athens, Georgia 30602-3636 Country: USA Email: malber@uga.edu 2. Abstract: This data set includes long-term observational data on mollusc species abundance and size distribution at 10 Georgia Coastal Ecosystems marsh sites used for annual plant and invertebrate population monitoring. Infaunal and epifaunal molluscs were hand-collected from within quadrats of known area in mid-marsh and creekbank zones (n = 4 quadrats per zone) at all sites annually in October. Molluscs were also collected from an additional high marsh Juncus zone (n = 4 quadrats) at several sites beginning in 2009. The molluscs were returned to the lab, preserved in ethanol, identified and counted to determine species abundance and density in each plot. The length of each measurable individual was then determined using calipers or an ocular micrometer mounted in a stereomicroscope to determine mollusc size. Population abundance and size measurement data are reported separately by site, zone, plot and species because analyses were performed at different times, specimens were not individually identifiable, and not all individuals were measureable. This data set includes cumulative long-term observations from 2000 to 2020, and will be updated annually to include the prior year observations. 3. Study Type: Synthesis 4. Study Themes: Aquatic Invertebrate Ecology 5. LTER Core Areas: Population Studies 6. Georeferences: geographic coordinates as data columns 7. Submission Date: Oct 12, 2016 D. Keywords: Animalia, Aquatic Invertebrate Monitoring, Archaeopulmonata, Bilateria, Bivalvia, Corbiculidae, Corbiculoidea, creek bank, Detracia, Detracia floridana, diversity, Ellobiidae, epifauna, fall, Gastropoda, GCE, Georgia, Georgia Coastal Ecosystems, Geukensia, Geukensia demissa, Heterodonta, Hydrobiidae, infauna, intertidal, invertebrates, length, Littoraria, Littoraria irrorata, Littorinidae, Lophozoa, LTER, marshes, Melampus, Melampus bidentatus, mid-marsh, Mollusca, mollusks, monitoring, Mytilidae, Mytiloida, Nassariidae, Nassarius obsoletus, Neogastropoda, Neotaenioglossa, Polymesoda, Polymesoda caroliniana, Population Studies, Prosobranchia, Protostomia, Pteriomorphia, Sapelo Island, size distribution, species composition, species diversity, Stylommatophora, Succineidae, USA, vegetation, Veneroida II. Research Origin Descriptors A. Overall Project Description 1. Project Title: Georgia Coastal Ecosystems LTER - IV 2. Principal Investigators: Name: Merryl Alber Address: Dept. of Marine Sciences University of Georgia Athens, Georgia 30602-3636 Country: USA Email: malber@uga.edu 3. Funding Period: Feb 01, 2019 to Jan 31, 2025 4. Objectives: The GCE-LTER project has four goals. 1) Track environmental and human drivers that can cause perturbations in our focal ecosystems. This will be accomplished this through continuing long-term measurements of climate, water chemistry, oceanic exchange, and human activities on the landscape. 2) Describe temporal and spatial variability in physical, chemical, geological and biological characteristics of the study system (coastal wetland complexes) and how they respond to external drivers. This will be accomplished through field monitoring in combination with remote sensing and modeling. 3) Characterize the ecological responses of intertidal marshes to disturbance. This will be accomplished by ongoing monitoring and experimental work to evaluate system responses to major perturbations in three key marsh habitats (changes in inundation and predator exclusion in Spartina-dominated salt marshes; increases in salinity in fresh marshes; changes in runoff in high marshes), by implementing standardized experimental disturbances along salinity and elevation gradients, and by tracking responses to natural disturbances. 4) Evaluate ecosystem properties at the landscape level (habitat distribution, net and gross primary production, C budgets) and assess the cumulative effects of disturbance on these properties. The project will also develop relationships between drivers and response variables, which can be used to predict the effects of future changes. This will be accomplished through a combination of data synthesis, remote sensing and modeling. 5. Abstract: The Georgia Coastal Ecosystems (GCE) Long Term Ecological Research (LTER) program, based at the University of Georgia Marine Institute on Sapelo Island, Georgia, was established in 2000 to study long-term change in coastal ecosystems. Estuaries (places where salt water from the ocean mixes with fresh water from the land) and their adjacent marshes provide food and refuge for fish, shellfish and birds; protect the shoreline from storms; help to keep the water clean; and store carbon. The GCE LTER researchers study marshes and estuaries to understand how these ecosystems function, to track how they change over time, and to predict how they might be affected by future changes in climate and human activities. They accomplish this by tracking the major factors that can cause long-term change in coastal areas (e.g. sea level, rainfall, upstream development), and measuring the effects of these factors on the study site. They also conduct focused studies to assess how key marsh habitats will respond to major changes expected in the future, including large-scale experiments to evaluate the effects of a) increases in the salinity of the water that floods freshwater marshes (mimicking drought and/or sea level rise), b) changes in water runoff from land into the upland marsh border (mimicking drought or upland development), and c) exclusion of larger organisms in the salt marsh (mimicking long-term declines in predators). During this award they will initiate additional studies to systematically evaluate how coastal wetlands respond to disturbances. Disturbances, or disruptions in the environment, are particularly important to understand in the context of long-term background changes such as increasing sea level, and GCE researchers are working to assess the cumulative effects of multiple disturbances on the landscape. The GCE education and outreach program works to share an understanding of coastal ecosystems with teachers and students, coastal managers, citizen scientist and the general public. 6. Funding Source: NSF OCE 1832178 B. Sub-project Description 1. Site Description a. Geographic Location: GCE1 -- Eulonia, Georgia, USA GCE2 -- Four Mile Island, Georgia, USA GCE3 -- North Sapelo, Sapelo Island, Georgia, USA GCE4 -- Meridian, Georgia, USA GCE5 -- Folly River, Georgia, USA GCE6 -- Dean Creek, Sapelo Island, Georgia, USA GCE7 -- Carrs Island, Georgia, USA GCE8 -- Alligator Creek, Georgia, USA GCE9 -- Rockdedundy Island, Georgia, USA GCE10 -- Hunt Camp, Sapelo Island, Georgia, USA GCE1_CB1 -- GCE1 creek bank plot 1 GCE1_CB13 -- GCE1 creek bank plot 13 GCE1_CB2 -- GCE1 creek bank plot 2 GCE1_CB28 -- GCE1 creek bank plot 28 GCE1_CB36 -- GCE1 creek bank plot 36 GCE1_CB38 -- GCE1 creek bank plot 38 GCE1_CB4 -- GCE1 creek bank plot 4 GCE1_CB46 -- GCE1 creek bank plot 46 GCE1_CB8 -- GCE1 creek bank plot 8 GCE1_MM1 -- GCE1 mid-marsh plot 1 GCE1_MM3 -- GCE1 mid-marsh plot 3 GCE1_MM6 -- GCE1 mid-marsh plot 6 GCE1_MM8 -- GCE1 mid-marsh plot 8 GCE10_CB1 -- GCE10 creek bank plot 1 GCE10_CB13 -- GCE10 creek bank plot 13 GCE10_CB3 -- GCE10 creek bank plot 3 GCE10_CB6 -- GCE10 creek bank plot 6 GCE10_CB8 -- GCE10 creek bank plot 8 GCE10_JN1 -- GCE10 mid-marsh Juncus plot 1 GCE10_JN3 -- GCE10 mid-marsh Juncus plot 3 GCE10_JN6 -- GCE10 mid-marsh Juncus plot 6 GCE10_JN8 -- GCE10 mid-marsh Juncus plot 8 GCE10_MM1 -- GCE10 mid-marsh plot 1 GCE10_MM3 -- GCE10 mid-marsh plot 3 GCE10_MM6 -- GCE10 mid-marsh plot 6 GCE10_MM8 -- GCE10 mid-marsh plot 8 GCE2_CB11 -- GCE2 creek bank plot 11 GCE2_CB21 -- GCE2 creek bank plot 21 GCE2_CB23 -- GCE2 creek bank plot 23 GCE2_CB38 -- GCE2 creek bank plot 38 GCE2_CB41 -- GCE2 creek bank plot 41 GCE2_CB48 -- GCE2 creek bank plot 48 GCE2_CB6 -- GCE2 creek bank plot 6 GCE2_MM1 -- GCE2 mid-marsh plot 1 GCE2_MM3 -- GCE2 mid-marsh plot 3 GCE2_MM6 -- GCE2 mid-marsh plot 6 GCE2_MM8 -- GCE2 mid-marsh plot 8 GCE3_CB1 -- GCE3 creek bank plot 1 GCE3_CB3 -- GCE3 creek bank plot 3 GCE3_CB6 -- GCE3 creek bank plot 6 GCE3_CB8 -- GCE3 creek bank plot 8 GCE3_MM1 -- GCE3 mid-marsh plot 1 GCE3_MM3 -- GCE3 mid-marsh plot 3 GCE3_MM6 -- GCE3 mid-marsh plot 6 GCE3_MM8 -- GCE3 mid-marsh plot 8 GCE4_CB1 -- GCE4 creek bank plot 1 GCE4_CB12 -- GCE4 creek bank plot 12 GCE4_CB15 -- GCE4 creek bank plot 15 GCE4_CB17 -- GCE4 creek bank plot 17 GCE4_CB26 -- GCE4 creek bank plot 26 GCE4_CB3 -- GCE4 creek bank plot 3 GCE4_CB4 -- GCE4 creek bank plot 4 GCE4_CB46 -- GCE4 creek bank plot 46 GCE4_CB8 -- GCE4 creek bank plot 8 GCE4_MM1 -- GCE4 mid-marsh plot 1 GCE4_MM3 -- GCE4 mid-marsh plot 3 GCE4_MM4 -- GCE4 mid-marsh plot 4 GCE4_MM5 -- GCE4 mid-marsh plot 5 GCE4_MM6 -- GCE4 mid-marsh plot 6 GCE4_MM8 -- GCE4 mid-marsh plot 8 GCE5_CB1 -- GCE5 creek bank plot 1 GCE5_CB18 -- GCE5 creek bank plot 18 GCE5_CB2 -- GCE5 creek bank plot 2 GCE5_CB3 -- GCE5 creek bank plot 3 GCE5_CB33 -- GCE5 creek bank plot 33 GCE5_CB4 -- GCE5 creek bank plot 4 GCE5_CB6 -- GCE5 creek bank plot 6 GCE5_CB8 -- GCE5 creek bank plot 8 GCE5_MM1 -- GCE5 mid-marsh plot 1 GCE5_MM3 -- GCE5 mid-marsh plot 3 GCE5_MM6 -- GCE5 mid-marsh plot 6 GCE5_MM8 -- GCE5 mid-marsh plot 8 GCE6_CB1 -- GCE6 creek bank plot 1 GCE6_CB23 -- GCE6 creek bank plot 23 GCE6_CB36 -- GCE6 creek bank plot 36 GCE6_CB43 -- GCE6 creek bank plot 43 GCE6_CB6 -- GCE6 creek bank plot 6 GCE6_CB8 -- GCE6 creek bank plot 8 GCE6_MM1 -- GCE6 mid-marsh plot 1 GCE6_MM3 -- GCE6 mid-marsh plot 3 GCE6_MM6 -- GCE6 mid-marsh plot 6 GCE6_MM8 -- GCE6 mid-marsh plot 8 GCE7_CB1 -- GCE7 creek bank plot 1 GCE7_CB3 -- GCE7 creek bank plot 3 GCE7_CB6 -- GCE7 creek bank plot 6 GCE7_CB8 -- GCE7 creek bank plot 8 GCE7_MM1 -- GCE7 mid-marsh plot 1 GCE7_MM3 -- GCE7 mid-marsh plot 3 GCE7_MM6 -- GCE7 mid-marsh plot 6 GCE7_MM8 -- GCE7 mid-marsh plot 8 GCE8_CB12 -- GCE8 creek bank plot 12 GCE8_CB14 -- GCE8 creek bank plot 14 GCE8_CB21 -- GCE8 creek bank plot 21 GCE8_CB26 -- GCE8 creek bank plot 26 GCE8_CB28 -- GCE8 creek bank plot 28 GCE8_CB3 -- GCE8 creek bank plot 3 GCE8_CB31 -- GCE8 creek bank plot 31 GCE8_MM1 -- GCE8 mid-marsh plot 1 GCE8_MM11 -- GCE8 mid-marsh plot 11 GCE8_MM13 -- GCE8 mid-marsh plot 13 GCE8_MM18 -- GCE8 mid-marsh plot 18 GCE8_MM23 -- GCE8 mid-marsh plot 23 GCE8_MM6 -- GCE8 mid-marsh plot 6 GCE8_MM7 -- GCE8 mid-marsh plot 7 GCE9_CB11 -- GCE9 creek bank plot 11 GCE9_CB16 -- GCE9 creek bank plot 16 GCE9_CB18 -- GCE9 creek bank plot 18 GCE9_CB23 -- GCE9 creek bank plot 23 GCE9_CB26 -- GCE9 creek bank plot 26 GCE9_CB33 -- GCE9 creek bank plot 33 GCE9_JN1 -- GCE9 Juncus plot 1 GCE9_JN3 -- GCE9 Juncus plot 3 GCE9_JN6 -- GCE9 Juncus plot 6 GCE9_JN8 -- GCE9 Juncus plot 8 GCE9_MM1 -- GCE9 mid-marsh plot 1 GCE9_MM3 -- GCE9 mid-marsh plot 3 GCE9_MM6 -- GCE9 mid-marsh plot 6 GCE9_MM8 -- GCE9 mid-marsh plot 8 Coordinates: GCE1 -- NW: 081 25 42.53 W, 31 32 48.30 N NE: 081 24 38.64 W, 31 32 48.30 N SE: 081 24 38.64 W, 31 32 02.27 N SW: 081 25 42.53 W, 31 32 02.27 N GCE2 -- NW: 081 19 08.26 W, 31 33 09.19 N NE: 081 17 34.24 W, 31 33 09.19 N SE: 081 17 34.24 W, 31 32 00.97 N SW: 081 19 08.26 W, 31 32 00.97 N GCE3 -- NW: 081 13 59.70 W, 31 32 48.72 N NE: 081 11 44.38 W, 31 32 48.72 N SE: 081 11 44.38 W, 31 30 54.68 N SW: 081 13 59.70 W, 31 30 54.68 N GCE4 -- NW: 081 22 14.71 W, 31 27 48.72 N NE: 081 21 26.12 W, 31 27 48.72 N SE: 081 21 26.12 W, 31 26 54.31 N SW: 081 22 14.71 W, 31 26 54.31 N GCE5 -- NW: 081 21 15.89 W, 31 26 33.14 N NE: 081 19 37.92 W, 31 26 33.14 N SE: 081 19 37.92 W, 31 25 03.50 N SW: 081 21 15.89 W, 31 25 03.50 N GCE6 -- NW: 081 17 58.28 W, 31 23 38.66 N NE: 081 15 51.76 W, 31 23 38.66 N SE: 081 15 51.76 W, 31 22 15.61 N SW: 081 17 58.28 W, 31 22 15.61 N GCE7 -- NW: 081 29 36.59 W, 31 20 55.59 N NE: 081 28 33.24 W, 31 20 55.59 N SE: 081 28 33.24 W, 31 20 03.71 N SW: 081 29 36.59 W, 31 20 03.71 N GCE8 -- NW: 081 25 34.58 W, 31 19 04.11 N NE: 081 24 38.28 W, 31 19 04.11 N SE: 081 24 38.28 W, 31 18 14.63 N SW: 081 25 34.58 W, 31 18 14.63 N GCE9 -- NW: 081 20 48.23 W, 31 21 29.31 N NE: 081 19 35.38 W, 31 21 29.31 N SE: 081 19 35.38 W, 31 20 21.02 N SW: 081 20 48.23 W, 31 20 21.02 N GCE10 -- NW: 081 17 43.82 W, 31 29 49.29 N NE: 081 15 32.07 W, 31 29 49.29 N SE: 081 15 32.07 W, 31 27 44.35 N SW: 081 17 43.82 W, 31 27 44.35 N GCE1_CB1 -- 81 25 21.1 W, 31 32 19.1 N GCE1_CB13 -- 81 25 20.8 W, 31 32 18.5 N GCE1_CB2 -- 81 25 21.0 W, 31 32 18.7 N GCE1_CB28 -- 81 25 20.0 W, 31 32 19.0 N GCE1_CB36 -- 81 25 20.2 W, 31 32 18.6 N GCE1_CB38 -- 81 25 20.0 W, 31 32 19.0 N GCE1_CB4 -- 81 25 20.6 W, 31 32 18.1 N GCE1_CB46 -- 81 25 20.2 W, 31 32 18.6 N GCE1_CB8 -- 81 25 19.9 W, 31 32 19.0 N GCE1_MM1 -- 81 25 22.2 W, 31 32 21.8 N GCE1_MM3 -- 81 25 21.2 W, 31 32 21.9 N GCE1_MM6 -- 81 25 19.6 W, 31 32 22.1 N GCE1_MM8 -- 81 25 18.3 W, 31 32 22.2 N GCE10_CB1 -- 81 16 13.7 W, 31 28 37.2 N GCE10_CB13 -- 81 16 14.7 W, 31 28 36.3 N GCE10_CB3 -- 81 16 14.6 W, 31 28 36.2 N GCE10_CB6 -- 81 16 15.3 W, 31 28 35.8 N GCE10_CB8 -- 81 16 17.8 W, 31 28 36.5 N GCE10_JN1 -- 81 16 14.9 W, 31 28 37.1 N GCE10_JN3 -- 81 16 14.6 W, 31 28 37.0 N GCE10_JN6 -- 81 16 14.3 W, 31 28 38.5 N GCE10_JN8 -- 81 16 14.5 W, 31 28 39.5 N GCE10_MM1 -- 81 16 13.9 W, 31 28 38.1 N GCE10_MM3 -- 81 16 15.1 W, 31 28 36.9 N GCE10_MM6 -- 81 16 16.6 W, 31 28 37.2 N GCE10_MM8 -- 81 16 17.6 W, 31 28 37.2 N GCE2_CB11 -- 81 17 46.0 W, 31 32 10.3 N GCE2_CB21 -- 81 17 45.9 W, 31 32 10.3 N GCE2_CB23 -- 81 17 44.7 W, 31 32 10.5 N GCE2_CB38 -- 81 17 42.4 W, 31 32 08.3 N GCE2_CB41 -- 81 17 45.9 W, 31 32 10.3 N GCE2_CB48 -- 81 17 42.4 W, 31 32 08.3 N GCE2_CB6 -- 81 17 42.4 W, 31 32 09.1 N GCE2_MM1 -- 81 17 46.5 W, 31 32 10.0 N GCE2_MM3 -- 81 17 45.3 W, 31 32 09.5 N GCE2_MM6 -- 81 17 43.9 W, 31 32 09.0 N GCE2_MM8 -- 81 17 43.0 W, 31 32 09.2 N GCE3_CB1 -- 81 13 44.2 W, 31 31 08.1 N GCE3_CB3 -- 81 13 44.4 W, 31 31 07.2 N GCE3_CB6 -- 81 13 44.8 W, 31 31 05.9 N GCE3_CB8 -- 81 13 45.3 W, 31 31 05.4 N GCE3_MM1 -- 81 13 44.4 W, 31 31 10.5 N GCE3_MM3 -- 81 13 44.8 W, 31 31 09.6 N GCE3_MM6 -- 81 13 45.7 W, 31 31 07.9 N GCE3_MM8 -- 81 13 46.0 W, 31 31 07.1 N GCE4_CB1 -- 81 21 55.8 W, 31 27 06.0 N GCE4_CB12 -- 81 21 56.0 W, 31 27 05.6 N GCE4_CB15 -- 81 21 58.1 W, 31 27 04.3 N GCE4_CB17 -- 81 21 58.6 W, 31 27 04.9 N GCE4_CB26 -- 81 21 58.2 W, 31 27 04.6 N GCE4_CB3 -- 81 21 56.0 W, 31 27 05.3 N GCE4_CB4 -- 81 21 56.1 W, 31 27 04.9 N GCE4_CB46 -- 81 21 58.1 W, 31 27 04.6 N GCE4_CB8 -- 81 21 58.7 W, 31 27 05.3 N GCE4_MM1 -- 81 21 55.9 W, 31 27 09.5 N GCE4_MM3 -- 81 21 56.0 W, 31 27 08.5 N GCE4_MM4 -- 81 21 56.2 W, 31 27 08.0 N GCE4_MM5 -- 81 21 56.5 W, 31 27 07.6 N GCE4_MM6 -- 81 21 56.9 W, 31 27 07.2 N GCE4_MM8 -- 81 21 57.5 W, 31 27 06.4 N GCE5_CB1 -- 81 20 23.7 W, 31 26 09.9 N GCE5_CB18 -- 81 20 26.3 W, 31 26 08.5 N GCE5_CB2 -- 81 20 24.2 W, 31 26 09.6 N GCE5_CB3 -- 81 20 24.6 W, 31 26 09.5 N GCE5_CB33 -- 81 20 24.6 W, 31 26 09.6 N GCE5_CB4 -- 81 20 25.1 W, 31 26 09.5 N GCE5_CB6 -- 81 20 25.6 W, 31 26 08.9 N GCE5_CB8 -- 81 20 26.2 W, 31 26 08.5 N GCE5_MM1 -- 81 20 26.5 W, 31 26 09.6 N GCE5_MM3 -- 81 20 27.6 W, 31 26 09.2 N GCE5_MM6 -- 81 20 29.1 W, 31 26 08.3 N GCE5_MM8 -- 81 20 29.8 W, 31 26 07.6 N GCE6_CB1 -- 81 16 47.3 W, 31 23 18.3 N GCE6_CB23 -- 81 16 47.6 W, 31 23 17.6 N GCE6_CB36 -- 81 16 47.0 W, 31 23 16.0 N GCE6_CB43 -- 81 16 47.6 W, 31 23 17.6 N GCE6_CB6 -- 81 16 47.0 W, 31 23 15.9 N GCE6_CB8 -- 81 16 47.9 W, 31 23 15.2 N GCE6_MM1 -- 81 16 48.5 W, 31 23 18.0 N GCE6_MM3 -- 81 16 48.5 W, 31 23 17.1 N GCE6_MM6 -- 81 16 49.5 W, 31 23 15.9 N GCE6_MM8 -- 81 16 50.4 W, 31 23 15.1 N GCE7_CB1 -- 81 28 43.3 W, 31 20 06.3 N GCE7_CB3 -- 81 28 43.4 W, 31 20 05.8 N GCE7_CB6 -- 81 28 42.8 W, 31 20 04.9 N GCE7_CB8 -- 81 28 42.6 W, 31 20 04.3 N GCE7_MM1 -- 81 28 42.9 W, 31 20 06.6 N GCE7_MM3 -- 81 28 42.6 W, 31 20 05.8 N GCE7_MM6 -- 81 28 41.8 W, 31 20 04.7 N GCE7_MM8 -- 81 28 40.9 W, 31 20 04.6 N GCE8_CB12 -- 81 24 57.9 W, 31 18 28.8 N GCE8_CB14 -- 81 24 56.6 W, 31 18 27.9 N GCE8_CB21 -- 81 24 58.0 W, 31 18 28.9 N GCE8_CB26 -- 81 24 55.7 W, 31 18 27.5 N GCE8_CB28 -- 81 24 55.2 W, 31 18 27.1 N GCE8_CB3 -- 81 24 56.7 W, 31 18 28.3 N GCE8_CB31 -- 81 24 58.1 W, 31 18 29.0 N GCE8_MM1 -- 81 24 56.8 W, 31 18 32.6 N GCE8_MM11 -- 81 24 56.8 W, 31 18 32.6 N GCE8_MM13 -- 81 24 56.0 W, 31 18 32.0 N GCE8_MM18 -- 81 24 54.5 W, 31 18 30.4 N GCE8_MM23 -- 81 24 56.1 W, 31 18 32.1 N GCE8_MM6 -- 81 24 54.9 W, 31 18 31.2 N GCE8_MM7 -- 81 24 54.8 W, 31 18 30.7 N GCE9_CB11 -- 81 20 01.4 W, 31 21 07.6 N GCE9_CB16 -- 81 20 04.0 W, 31 21 06.5 N GCE9_CB18 -- 81 20 04.8 W, 31 21 06.0 N GCE9_CB23 -- 81 20 02.3 W, 31 21 07.1 N GCE9_CB26 -- 81 20 03.9 W, 31 21 06.4 N GCE9_CB33 -- 81 20 02.3 W, 31 21 07.0 N GCE9_JN1 -- 81 20 00.4 W, 31 21 04.6 N GCE9_JN3 -- 81 19 59.6 W, 31 21 04.4 N GCE9_JN6 -- 81 19 57.4 W, 31 21 03.8 N GCE9_JN8 -- 81 19 57.1 W, 31 21 02.3 N GCE9_MM1 -- 81 20 01.5 W, 31 21 04.3 N GCE9_MM3 -- 81 20 00.5 W, 31 21 04.2 N GCE9_MM6 -- 81 19 58.6 W, 31 21 03.2 N GCE9_MM8 -- 81 19 57.5 W, 31 21 02.9 N b. Physiographic Region: GCE1 -- Lower coastal plain GCE2 -- Barrier island GCE3 -- Barrier island GCE4 -- Lower coastal plain GCE5 -- Barrier island GCE6 -- Barrier island GCE7 -- Lower coastal plain GCE8 -- Lower coastal plain GCE9 -- Barrier island GCE10 -- Barrier island GCE1_CB1 -- Lower coastal plain GCE1_CB13 -- Lower coastal plain GCE1_CB2 -- Lower coastal plain GCE1_CB28 -- Lower coastal plain GCE1_CB36 -- Lower coastal plain GCE1_CB38 -- Lower coastal plain GCE1_CB4 -- Lower coastal plain GCE1_CB46 -- Lower coastal plain GCE1_CB8 -- Lower coastal plain GCE1_MM1 -- Lower coastal plain GCE1_MM3 -- Lower coastal plain GCE1_MM6 -- Lower coastal plain GCE1_MM8 -- Lower coastal plain GCE10_CB1 -- Barrier island GCE10_CB13 -- Barrier island GCE10_CB3 -- Barrier island GCE10_CB6 -- Barrier island GCE10_CB8 -- Barrier island GCE10_JN1 -- Barrier island GCE10_JN3 -- Barrier island GCE10_JN6 -- Barrier island GCE10_JN8 -- Barrier island GCE10_MM1 -- Barrier island GCE10_MM3 -- Barrier island GCE10_MM6 -- Barrier island GCE10_MM8 -- Barrier island GCE2_CB11 -- Barrier island GCE2_CB21 -- Barrier island GCE2_CB23 -- Barrier island GCE2_CB38 -- Barrier island GCE2_CB41 -- Barrier island GCE2_CB48 -- Barrier island GCE2_CB6 -- Barrier island GCE2_MM1 -- Barrier island GCE2_MM3 -- Barrier island GCE2_MM6 -- Barrier island GCE2_MM8 -- Barrier island GCE3_CB1 -- Barrier island GCE3_CB3 -- Barrier island GCE3_CB6 -- Barrier island GCE3_CB8 -- Barrier island GCE3_MM1 -- Barrier island GCE3_MM3 -- Barrier island GCE3_MM6 -- Barrier island GCE3_MM8 -- Barrier island GCE4_CB1 -- Lower coastal plain GCE4_CB12 -- Lower coastal plain GCE4_CB15 -- Lower coastal plain GCE4_CB17 -- Lower coastal plain GCE4_CB26 -- Lower coastal plain GCE4_CB3 -- Lower coastal plain GCE4_CB4 -- Lower coastal plain GCE4_CB46 -- Lower coastal plain GCE4_CB8 -- Lower coastal plain GCE4_MM1 -- Lower coastal plain GCE4_MM3 -- Lower coastal plain GCE4_MM4 -- Lower coastal plain GCE4_MM5 -- Lower coastal plain GCE4_MM6 -- Lower coastal plain GCE4_MM8 -- Lower coastal plain GCE5_CB1 -- Barrier island GCE5_CB18 -- Barrier island GCE5_CB2 -- Barrier island GCE5_CB3 -- Barrier island GCE5_CB33 -- Barrier island GCE5_CB4 -- Barrier island GCE5_CB6 -- Barrier island GCE5_CB8 -- Barrier island GCE5_MM1 -- Barrier island GCE5_MM3 -- Barrier island GCE5_MM6 -- Barrier island GCE5_MM8 -- Barrier island GCE6_CB1 -- Barrier island GCE6_CB23 -- Barrier island GCE6_CB36 -- Barrier island GCE6_CB43 -- Barrier island GCE6_CB6 -- Barrier island GCE6_CB8 -- Barrier island GCE6_MM1 -- Barrier island GCE6_MM3 -- Barrier island GCE6_MM6 -- Barrier island GCE6_MM8 -- Barrier island GCE7_CB1 -- Lower coastal plain GCE7_CB3 -- Lower coastal plain GCE7_CB6 -- Lower coastal plain GCE7_CB8 -- Lower coastal plain GCE7_MM1 -- Lower coastal plain GCE7_MM3 -- Lower coastal plain GCE7_MM6 -- Lower coastal plain GCE7_MM8 -- Lower coastal plain GCE8_CB12 -- Lower coastal plain GCE8_CB14 -- Lower coastal plain GCE8_CB21 -- Lower coastal plain GCE8_CB26 -- Lower coastal plain GCE8_CB28 -- Lower coastal plain GCE8_CB3 -- Lower coastal plain GCE8_CB31 -- Lower coastal plain GCE8_MM1 -- Lower coastal plain GCE8_MM11 -- Lower coastal plain GCE8_MM13 -- Lower coastal plain GCE8_MM18 -- Lower coastal plain GCE8_MM23 -- Lower coastal plain GCE8_MM6 -- Lower coastal plain GCE8_MM7 -- Lower coastal plain GCE9_CB11 -- Barrier island GCE9_CB16 -- Barrier island GCE9_CB18 -- Barrier island GCE9_CB23 -- Barrier island GCE9_CB26 -- Barrier island GCE9_CB33 -- Barrier island GCE9_JN1 -- Barrier island GCE9_JN3 -- Barrier island GCE9_JN6 -- Barrier island GCE9_JN8 -- Barrier island GCE9_MM1 -- Barrier island GCE9_MM3 -- Barrier island GCE9_MM6 -- Barrier island GCE9_MM8 -- Barrier island c. Landform Components: GCE1 -- Intertidal salt marsh bordering maritime forest GCE2 -- Intertidal salt marsh GCE3 -- Intertidal salt marsh, mud flat, and maritime forest GCE4 -- Intertidal salt marsh bordering maritime forest GCE5 -- Intertidal salt marsh GCE6 -- Intertidal salt marsh, sand beach, maritime forest GCE7 -- Freshwater tidal marsh, devegetated fields GCE8 -- Brackish tidal marsh GCE9 -- Intertidal salt marsh GCE10 -- Intertidal salt marsh bordering maritime forest GCE1_CB1 -- Intertidal salt marsh bordering maritime forest GCE1_CB13 -- Intertidal salt marsh bordering maritime forest GCE1_CB2 -- Intertidal salt marsh bordering maritime forest GCE1_CB28 -- Intertidal salt marsh bordering maritime forest GCE1_CB36 -- Intertidal salt marsh bordering maritime forest GCE1_CB38 -- Intertidal salt marsh bordering maritime forest GCE1_CB4 -- Intertidal salt marsh bordering maritime forest GCE1_CB46 -- Intertidal salt marsh bordering maritime forest GCE1_CB8 -- Intertidal salt marsh bordering maritime forest GCE1_MM1 -- Intertidal salt marsh bordering maritime forest GCE1_MM3 -- Intertidal salt marsh bordering maritime forest GCE1_MM6 -- Intertidal salt marsh bordering maritime forest GCE1_MM8 -- Intertidal salt marsh bordering maritime forest GCE10_CB1 -- Intertidal salt marsh bordering maritime forest GCE10_CB13 -- Intertidal salt marsh bordering maritime forest GCE10_CB3 -- Intertidal salt marsh bordering maritime forest GCE10_CB6 -- Intertidal salt marsh bordering maritime forest GCE10_CB8 -- Intertidal salt marsh bordering maritime forest GCE10_JN1 -- Intertidal salt marsh bordering maritime forest GCE10_JN3 -- Intertidal salt marsh bordering maritime forest GCE10_JN6 -- Intertidal salt marsh bordering maritime forest GCE10_JN8 -- Intertidal salt marsh bordering maritime forest GCE10_MM1 -- Intertidal salt marsh bordering maritime forest GCE10_MM3 -- Intertidal salt marsh bordering maritime forest GCE10_MM6 -- Intertidal salt marsh bordering maritime forest GCE10_MM8 -- Intertidal salt marsh bordering maritime forest GCE2_CB11 -- Intertidal salt marsh GCE2_CB21 -- Intertidal salt marsh GCE2_CB23 -- Intertidal salt marsh GCE2_CB38 -- Intertidal salt marsh GCE2_CB41 -- Intertidal salt marsh GCE2_CB48 -- Intertidal salt marsh GCE2_CB6 -- Intertidal salt marsh GCE2_MM1 -- Intertidal salt marsh GCE2_MM3 -- Intertidal salt marsh GCE2_MM6 -- Intertidal salt marsh GCE2_MM8 -- Intertidal salt marsh GCE3_CB1 -- Intertidal salt marsh, mud flat, and maritime forest GCE3_CB3 -- Intertidal salt marsh, mud flat, and maritime forest GCE3_CB6 -- Intertidal salt marsh, mud flat, and maritime forest GCE3_CB8 -- Intertidal salt marsh, mud flat, and maritime forest GCE3_MM1 -- Intertidal salt marsh, mud flat, and maritime forest GCE3_MM3 -- Intertidal salt marsh, mud flat, and maritime forest GCE3_MM6 -- Intertidal salt marsh, mud flat, and maritime forest GCE3_MM8 -- Intertidal salt marsh, mud flat, and maritime forest GCE4_CB1 -- Intertidal salt marsh bordering maritime forest GCE4_CB12 -- Intertidal salt marsh bordering maritime forest GCE4_CB15 -- Intertidal salt marsh bordering maritime forest GCE4_CB17 -- Intertidal salt marsh bordering maritime forest GCE4_CB26 -- Intertidal salt marsh bordering maritime forest GCE4_CB3 -- Intertidal salt marsh bordering maritime forest GCE4_CB4 -- Intertidal salt marsh bordering maritime forest GCE4_CB46 -- Intertidal salt marsh bordering maritime forest GCE4_CB8 -- Intertidal salt marsh bordering maritime forest GCE4_MM1 -- Intertidal salt marsh bordering maritime forest GCE4_MM3 -- Intertidal salt marsh bordering maritime forest GCE4_MM4 -- Intertidal salt marsh bordering maritime forest GCE4_MM5 -- Intertidal salt marsh bordering maritime forest GCE4_MM6 -- Intertidal salt marsh bordering maritime forest GCE4_MM8 -- Intertidal salt marsh bordering maritime forest GCE5_CB1 -- Intertidal salt marsh GCE5_CB18 -- Intertidal salt marsh GCE5_CB2 -- Intertidal salt marsh GCE5_CB3 -- Intertidal salt marsh GCE5_CB33 -- Intertidal salt marsh GCE5_CB4 -- Intertidal salt marsh GCE5_CB6 -- Intertidal salt marsh GCE5_CB8 -- Intertidal salt marsh GCE5_MM1 -- Intertidal salt marsh GCE5_MM3 -- Intertidal salt marsh GCE5_MM6 -- Intertidal salt marsh GCE5_MM8 -- Intertidal salt marsh GCE6_CB1 -- Intertidal salt marsh, sand beach, maritime forest GCE6_CB23 -- Intertidal salt marsh, sand beach, maritime forest GCE6_CB36 -- Intertidal salt marsh, sand beach, maritime forest GCE6_CB43 -- Intertidal salt marsh, sand beach, maritime forest GCE6_CB6 -- Intertidal salt marsh, sand beach, maritime forest GCE6_CB8 -- Intertidal salt marsh, sand beach, maritime forest GCE6_MM1 -- Intertidal salt marsh, sand beach, maritime forest GCE6_MM3 -- Intertidal salt marsh, sand beach, maritime forest GCE6_MM6 -- Intertidal salt marsh, sand beach, maritime forest GCE6_MM8 -- Intertidal salt marsh, sand beach, maritime forest GCE7_CB1 -- Freshwater tidal marsh, devegetated fields GCE7_CB3 -- Freshwater tidal marsh, devegetated fields GCE7_CB6 -- Freshwater tidal marsh, devegetated fields GCE7_CB8 -- Freshwater tidal marsh, devegetated fields GCE7_MM1 -- Freshwater tidal marsh, devegetated fields GCE7_MM3 -- Freshwater tidal marsh, devegetated fields GCE7_MM6 -- Freshwater tidal marsh, devegetated fields GCE7_MM8 -- Freshwater tidal marsh, devegetated fields GCE8_CB12 -- Brackish tidal marsh GCE8_CB14 -- Brackish tidal marsh GCE8_CB21 -- Brackish tidal marsh GCE8_CB26 -- Brackish tidal marsh GCE8_CB28 -- Brackish tidal marsh GCE8_CB3 -- Brackish tidal marsh GCE8_CB31 -- Brackish tidal marsh GCE8_MM1 -- Brackish tidal marsh GCE8_MM11 -- Brackish tidal marsh GCE8_MM13 -- Brackish tidal marsh GCE8_MM18 -- Brackish tidal marsh GCE8_MM23 -- Brackish tidal marsh GCE8_MM6 -- Brackish tidal marsh GCE8_MM7 -- Brackish tidal marsh GCE9_CB11 -- Intertidal salt marsh GCE9_CB16 -- Intertidal salt marsh GCE9_CB18 -- Intertidal salt marsh GCE9_CB23 -- Intertidal salt marsh GCE9_CB26 -- Intertidal salt marsh GCE9_CB33 -- Intertidal salt marsh GCE9_JN1 -- Intertidal salt marsh GCE9_JN3 -- Intertidal salt marsh GCE9_JN6 -- Intertidal salt marsh GCE9_JN8 -- Intertidal salt marsh GCE9_MM1 -- Intertidal salt marsh GCE9_MM3 -- Intertidal salt marsh GCE9_MM6 -- Intertidal salt marsh GCE9_MM8 -- Intertidal salt marsh d. Hydrographic Characteristics: GCE1 -- Site contains the upper reaches of the Sapelo River, and is subject to 2-3m semi-diurnal tides GCE2 -- Site contains the Sapelo River and associated tidal creeks, and is subject to 2-3m semi-diurnal tides GCE3 -- Site includes Sapelo Sound and portions of Blackbeard Creek, and is subject to 2-3m semi-diurnal tides GCE4 -- Site includes Hudson Creek and is subject to 2-3m semi-diurnal tides GCE5 -- Site contains the Folly River and borders Doboy Sound, and is subject to 2-3m semi-diurnal tides GCE6 -- Site contains Dean Creek and borders Doboy Sound, and is subject to 2-3m semi-diurnal tides GCE7 -- Site contains Hammersmith Creek and borders the South Champney River, and is subject to 2-3m semi-diurnal tides GCE8 -- Site contains the Altamaha River, and is subject to 2-3m semi-diurnal tides GCE9 -- Site contains Crooked Creek and borders the Little Mud River, and is subject to 2-3m semi-diurnal tides GCE10 -- Site borders the Mud River and contains tidal creeks and the upper reach of the Duplin River, and is subject to 2-3m semi-diurnal tides GCE1_CB1 -- Site contains the upper reaches of the Sapelo River, and is subject to 2-3m semi-diurnal tides GCE1_CB13 -- Site contains the upper reaches of the Sapelo River, and is subject to 2-3m semi-diurnal tides GCE1_CB2 -- Site contains the upper reaches of the Sapelo River, and is subject to 2-3m semi-diurnal tides GCE1_CB28 -- Site contains the upper reaches of the Sapelo River, and is subject to 2-3m semi-diurnal tides GCE1_CB36 -- Site contains the upper reaches of the Sapelo River, and is subject to 2-3m semi-diurnal tides GCE1_CB38 -- Site contains the upper reaches of the Sapelo River, and is subject to 2-3m semi-diurnal tides GCE1_CB4 -- Site contains the upper reaches of the Sapelo River, and is subject to 2-3m semi-diurnal tides GCE1_CB46 -- Site contains the upper reaches of the Sapelo River, and is subject to 2-3m semi-diurnal tides GCE1_CB8 -- Site contains the upper reaches of the Sapelo River, and is subject to 2-3m semi-diurnal tides GCE1_MM1 -- Site contains the upper reaches of the Sapelo River, and is subject to 2-3m semi-diurnal tides GCE1_MM3 -- Site contains the upper reaches of the Sapelo River, and is subject to 2-3m semi-diurnal tides GCE1_MM6 -- Site contains the upper reaches of the Sapelo River, and is subject to 2-3m semi-diurnal tides GCE1_MM8 -- Site contains the upper reaches of the Sapelo River, and is subject to 2-3m semi-diurnal tides GCE10_CB1 -- Site borders the Mud River and contains tidal creeks and the upper reach of the Duplin River, and is subject to 2-3m semi-diurnal tides GCE10_CB13 -- Site borders the Mud River and contains tidal creeks and the upper reach of the Duplin River, and is subject to 2-3m semi-diurnal tides GCE10_CB3 -- Site borders the Mud River and contains tidal creeks and the upper reach of the Duplin River, and is subject to 2-3m semi-diurnal tides GCE10_CB6 -- Site borders the Mud River and contains tidal creeks and the upper reach of the Duplin River, and is subject to 2-3m semi-diurnal tides GCE10_CB8 -- Site borders the Mud River and contains tidal creeks and the upper reach of the Duplin River, and is subject to 2-3m semi-diurnal tides GCE10_JN1 -- Site borders the Mud River and contains tidal creeks and the upper reach of the Duplin River, and is subject to 2-3m semi-diurnal tides GCE10_JN3 -- Site borders the Mud River and contains tidal creeks and the upper reach of the Duplin River, and is subject to 2-3m semi-diurnal tides GCE10_JN6 -- Site borders the Mud River and contains tidal creeks and the upper reach of the Duplin River, and is subject to 2-3m semi-diurnal tides GCE10_JN8 -- Site borders the Mud River and contains tidal creeks and the upper reach of the Duplin River, and is subject to 2-3m semi-diurnal tides GCE10_MM1 -- Site borders the Mud River and contains tidal creeks and the upper reach of the Duplin River, and is subject to 2-3m semi-diurnal tides GCE10_MM3 -- Site borders the Mud River and contains tidal creeks and the upper reach of the Duplin River, and is subject to 2-3m semi-diurnal tides GCE10_MM6 -- Site borders the Mud River and contains tidal creeks and the upper reach of the Duplin River, and is subject to 2-3m semi-diurnal tides GCE10_MM8 -- Site borders the Mud River and contains tidal creeks and the upper reach of the Duplin River, and is subject to 2-3m semi-diurnal tides GCE2_CB11 -- Site contains the Sapelo River and associated tidal creeks, and is subject to 2-3m semi-diurnal tides GCE2_CB21 -- Site contains the Sapelo River and associated tidal creeks, and is subject to 2-3m semi-diurnal tides GCE2_CB23 -- Site contains the Sapelo River and associated tidal creeks, and is subject to 2-3m semi-diurnal tides GCE2_CB38 -- Site contains the Sapelo River and associated tidal creeks, and is subject to 2-3m semi-diurnal tides GCE2_CB41 -- Site contains the Sapelo River and associated tidal creeks, and is subject to 2-3m semi-diurnal tides GCE2_CB48 -- Site contains the Sapelo River and associated tidal creeks, and is subject to 2-3m semi-diurnal tides GCE2_CB6 -- Site contains the Sapelo River and associated tidal creeks, and is subject to 2-3m semi-diurnal tides GCE2_MM1 -- Site contains the Sapelo River and associated tidal creeks, and is subject to 2-3m semi-diurnal tides GCE2_MM3 -- Site contains the Sapelo River and associated tidal creeks, and is subject to 2-3m semi-diurnal tides GCE2_MM6 -- Site contains the Sapelo River and associated tidal creeks, and is subject to 2-3m semi-diurnal tides GCE2_MM8 -- Site contains the Sapelo River and associated tidal creeks, and is subject to 2-3m semi-diurnal tides GCE3_CB1 -- Site includes Sapelo Sound and portions of Blackbeard Creek, and is subject to 2-3m semi-diurnal tides GCE3_CB3 -- Site includes Sapelo Sound and portions of Blackbeard Creek, and is subject to 2-3m semi-diurnal tides GCE3_CB6 -- Site includes Sapelo Sound and portions of Blackbeard Creek, and is subject to 2-3m semi-diurnal tides GCE3_CB8 -- Site includes Sapelo Sound and portions of Blackbeard Creek, and is subject to 2-3m semi-diurnal tides GCE3_MM1 -- Site includes Sapelo Sound and portions of Blackbeard Creek, and is subject to 2-3m semi-diurnal tides GCE3_MM3 -- Site includes Sapelo Sound and portions of Blackbeard Creek, and is subject to 2-3m semi-diurnal tides GCE3_MM6 -- Site includes Sapelo Sound and portions of Blackbeard Creek, and is subject to 2-3m semi-diurnal tides GCE3_MM8 -- Site includes Sapelo Sound and portions of Blackbeard Creek, and is subject to 2-3m semi-diurnal tides GCE4_CB1 -- Site includes Hudson Creek and is subject to 2-3m semi-diurnal tides GCE4_CB12 -- Site includes Hudson Creek and is subject to 2-3m semi-diurnal tides GCE4_CB15 -- Site includes Hudson Creek and is subject to 2-3m semi-diurnal tides GCE4_CB17 -- Site includes Hudson Creek and is subject to 2-3m semi-diurnal tides GCE4_CB26 -- Site includes Hudson Creek and is subject to 2-3m semi-diurnal tides GCE4_CB3 -- Site includes Hudson Creek and is subject to 2-3m semi-diurnal tides GCE4_CB4 -- Site includes Hudson Creek and is subject to 2-3m semi-diurnal tides GCE4_CB46 -- Site includes Hudson Creek and is subject to 2-3m semi-diurnal tides GCE4_CB8 -- Site includes Hudson Creek and is subject to 2-3m semi-diurnal tides GCE4_MM1 -- Site includes Hudson Creek and is subject to 2-3m semi-diurnal tides GCE4_MM3 -- Site includes Hudson Creek and is subject to 2-3m semi-diurnal tides GCE4_MM4 -- Site includes Hudson Creek and is subject to 2-3m semi-diurnal tides GCE4_MM5 -- Site includes Hudson Creek and is subject to 2-3m semi-diurnal tides GCE4_MM6 -- Site includes Hudson Creek and is subject to 2-3m semi-diurnal tides GCE4_MM8 -- Site includes Hudson Creek and is subject to 2-3m semi-diurnal tides GCE5_CB1 -- Site contains the Folly River and borders Doboy Sound, and is subject to 2-3m semi-diurnal tides GCE5_CB18 -- Site contains the Folly River and borders Doboy Sound, and is subject to 2-3m semi-diurnal tides GCE5_CB2 -- Site contains the Folly River and borders Doboy Sound, and is subject to 2-3m semi-diurnal tides GCE5_CB3 -- Site contains the Folly River and borders Doboy Sound, and is subject to 2-3m semi-diurnal tides GCE5_CB33 -- Site contains the Folly River and borders Doboy Sound, and is subject to 2-3m semi-diurnal tides GCE5_CB4 -- Site contains the Folly River and borders Doboy Sound, and is subject to 2-3m semi-diurnal tides GCE5_CB6 -- Site contains the Folly River and borders Doboy Sound, and is subject to 2-3m semi-diurnal tides GCE5_CB8 -- Site contains the Folly River and borders Doboy Sound, and is subject to 2-3m semi-diurnal tides GCE5_MM1 -- Site contains the Folly River and borders Doboy Sound, and is subject to 2-3m semi-diurnal tides GCE5_MM3 -- Site contains the Folly River and borders Doboy Sound, and is subject to 2-3m semi-diurnal tides GCE5_MM6 -- Site contains the Folly River and borders Doboy Sound, and is subject to 2-3m semi-diurnal tides GCE5_MM8 -- Site contains the Folly River and borders Doboy Sound, and is subject to 2-3m semi-diurnal tides GCE6_CB1 -- Site contains Dean Creek and borders Doboy Sound, and is subject to 2-3m semi-diurnal tides GCE6_CB23 -- Site contains Dean Creek and borders Doboy Sound, and is subject to 2-3m semi-diurnal tides GCE6_CB36 -- Site contains Dean Creek and borders Doboy Sound, and is subject to 2-3m semi-diurnal tides GCE6_CB43 -- Site contains Dean Creek and borders Doboy Sound, and is subject to 2-3m semi-diurnal tides GCE6_CB6 -- Site contains Dean Creek and borders Doboy Sound, and is subject to 2-3m semi-diurnal tides GCE6_CB8 -- Site contains Dean Creek and borders Doboy Sound, and is subject to 2-3m semi-diurnal tides GCE6_MM1 -- Site contains Dean Creek and borders Doboy Sound, and is subject to 2-3m semi-diurnal tides GCE6_MM3 -- Site contains Dean Creek and borders Doboy Sound, and is subject to 2-3m semi-diurnal tides GCE6_MM6 -- Site contains Dean Creek and borders Doboy Sound, and is subject to 2-3m semi-diurnal tides GCE6_MM8 -- Site contains Dean Creek and borders Doboy Sound, and is subject to 2-3m semi-diurnal tides GCE7_CB1 -- Site contains Hammersmith Creek and borders the South Champney River, and is subject to 2-3m semi-diurnal tides GCE7_CB3 -- Site contains Hammersmith Creek and borders the South Champney River, and is subject to 2-3m semi-diurnal tides GCE7_CB6 -- Site contains Hammersmith Creek and borders the South Champney River, and is subject to 2-3m semi-diurnal tides GCE7_CB8 -- Site contains Hammersmith Creek and borders the South Champney River, and is subject to 2-3m semi-diurnal tides GCE7_MM1 -- Site contains Hammersmith Creek and borders the South Champney River, and is subject to 2-3m semi-diurnal tides GCE7_MM3 -- Site contains Hammersmith Creek and borders the South Champney River, and is subject to 2-3m semi-diurnal tides GCE7_MM6 -- Site contains Hammersmith Creek and borders the South Champney River, and is subject to 2-3m semi-diurnal tides GCE7_MM8 -- Site contains Hammersmith Creek and borders the South Champney River, and is subject to 2-3m semi-diurnal tides GCE8_CB12 -- Site contains the Altamaha River, and is subject to 2-3m semi-diurnal tides GCE8_CB14 -- Site contains the Altamaha River, and is subject to 2-3m semi-diurnal tides GCE8_CB21 -- Site contains the Altamaha River, and is subject to 2-3m semi-diurnal tides GCE8_CB26 -- Site contains the Altamaha River, and is subject to 2-3m semi-diurnal tides GCE8_CB28 -- Site contains the Altamaha River, and is subject to 2-3m semi-diurnal tides GCE8_CB3 -- Site contains the Altamaha River, and is subject to 2-3m semi-diurnal tides GCE8_CB31 -- Site contains the Altamaha River, and is subject to 2-3m semi-diurnal tides GCE8_MM1 -- Site contains the Altamaha River, and is subject to 2-3m semi-diurnal tides GCE8_MM11 -- Site contains the Altamaha River, and is subject to 2-3m semi-diurnal tides GCE8_MM13 -- Site contains the Altamaha River, and is subject to 2-3m semi-diurnal tides GCE8_MM18 -- Site contains the Altamaha River, and is subject to 2-3m semi-diurnal tides GCE8_MM23 -- Site contains the Altamaha River, and is subject to 2-3m semi-diurnal tides GCE8_MM6 -- Site contains the Altamaha River, and is subject to 2-3m semi-diurnal tides GCE8_MM7 -- Site contains the Altamaha River, and is subject to 2-3m semi-diurnal tides GCE9_CB11 -- Site contains Crooked Creek and borders the Little Mud River, and is subject to 2-3m semi-diurnal tides GCE9_CB16 -- Site contains Crooked Creek and borders the Little Mud River, and is subject to 2-3m semi-diurnal tides GCE9_CB18 -- Site contains Crooked Creek and borders the Little Mud River, and is subject to 2-3m semi-diurnal tides GCE9_CB23 -- Site contains Crooked Creek and borders the Little Mud River, and is subject to 2-3m semi-diurnal tides GCE9_CB26 -- Site contains Crooked Creek and borders the Little Mud River, and is subject to 2-3m semi-diurnal tides GCE9_CB33 -- Site contains Crooked Creek and borders the Little Mud River, and is subject to 2-3m semi-diurnal tides GCE9_JN1 -- Site contains Crooked Creek and borders the Little Mud River, and is subject to 2-3m semi-diurnal tides GCE9_JN3 -- Site contains Crooked Creek and borders the Little Mud River, and is subject to 2-3m semi-diurnal tides GCE9_JN6 -- Site contains Crooked Creek and borders the Little Mud River, and is subject to 2-3m semi-diurnal tides GCE9_JN8 -- Site contains Crooked Creek and borders the Little Mud River, and is subject to 2-3m semi-diurnal tides GCE9_MM1 -- Site contains Crooked Creek and borders the Little Mud River, and is subject to 2-3m semi-diurnal tides GCE9_MM3 -- Site contains Crooked Creek and borders the Little Mud River, and is subject to 2-3m semi-diurnal tides GCE9_MM6 -- Site contains Crooked Creek and borders the Little Mud River, and is subject to 2-3m semi-diurnal tides GCE9_MM8 -- Site contains Crooked Creek and borders the Little Mud River, and is subject to 2-3m semi-diurnal tides e. Topographic Attributes: GCE1 -- Flat, with elevations ranging from 0-3m above mean low tide GCE2 -- Flat, with elevations ranging from 0-3m above mean low tide GCE3 -- Flat, with elevations ranging from 0-3m above mean low tide GCE4 -- Flat, with elevations ranging from 0-3m above mean low tide GCE5 -- Flat, with elevations ranging from 0-3m above mean low tide GCE6 -- Flat, with elevations ranging from 0-3m above mean low tide GCE7 -- Flat, with elevations ranging from 0-3m above mean low tide GCE8 -- Flat, with elevations ranging from 0-3m above mean low tide GCE9 -- Flat, with elevations ranging from 0-3m above mean low tide GCE10 -- Flat, with elevations ranging from 0-3m above mean low tide GCE1_CB1 -- Flat, with elevations ranging from 0-3m above mean low tide GCE1_CB13 -- Flat, with elevations ranging from 0-3m above mean low tide GCE1_CB2 -- Flat, with elevations ranging from 0-3m above mean low tide GCE1_CB28 -- Flat, with elevations ranging from 0-3m above mean low tide GCE1_CB36 -- Flat, with elevations ranging from 0-3m above mean low tide GCE1_CB38 -- Flat, with elevations ranging from 0-3m above mean low tide GCE1_CB4 -- Flat, with elevations ranging from 0-3m above mean low tide GCE1_CB46 -- Flat, with elevations ranging from 0-3m above mean low tide GCE1_CB8 -- Flat, with elevations ranging from 0-3m above mean low tide GCE1_MM1 -- Flat, with elevations ranging from 0-3m above mean low tide GCE1_MM3 -- Flat, with elevations ranging from 0-3m above mean low tide GCE1_MM6 -- Flat, with elevations ranging from 0-3m above mean low tide GCE1_MM8 -- Flat, with elevations ranging from 0-3m above mean low tide GCE10_CB1 -- Flat, with elevations ranging from 0-3m above mean low tide GCE10_CB13 -- Flat, with elevations ranging from 0-3m above mean low tide GCE10_CB3 -- Flat, with elevations ranging from 0-3m above mean low tide GCE10_CB6 -- Flat, with elevations ranging from 0-3m above mean low tide GCE10_CB8 -- Flat, with elevations ranging from 0-3m above mean low tide GCE10_JN1 -- Flat, with elevations ranging from 0-3m above mean low tide GCE10_JN3 -- Flat, with elevations ranging from 0-3m above mean low tide GCE10_JN6 -- Flat, with elevations ranging from 0-3m above mean low tide GCE10_JN8 -- Flat, with elevations ranging from 0-3m above mean low tide GCE10_MM1 -- Flat, with elevations ranging from 0-3m above mean low tide GCE10_MM3 -- Flat, with elevations ranging from 0-3m above mean low tide GCE10_MM6 -- Flat, with elevations ranging from 0-3m above mean low tide GCE10_MM8 -- Flat, with elevations ranging from 0-3m above mean low tide GCE2_CB11 -- Flat, with elevations ranging from 0-3m above mean low tide GCE2_CB21 -- Flat, with elevations ranging from 0-3m above mean low tide GCE2_CB23 -- Flat, with elevations ranging from 0-3m above mean low tide GCE2_CB38 -- Flat, with elevations ranging from 0-3m above mean low tide GCE2_CB41 -- Flat, with elevations ranging from 0-3m above mean low tide GCE2_CB48 -- Flat, with elevations ranging from 0-3m above mean low tide GCE2_CB6 -- Flat, with elevations ranging from 0-3m above mean low tide GCE2_MM1 -- Flat, with elevations ranging from 0-3m above mean low tide GCE2_MM3 -- Flat, with elevations ranging from 0-3m above mean low tide GCE2_MM6 -- Flat, with elevations ranging from 0-3m above mean low tide GCE2_MM8 -- Flat, with elevations ranging from 0-3m above mean low tide GCE3_CB1 -- Flat, with elevations ranging from 0-3m above mean low tide GCE3_CB3 -- Flat, with elevations ranging from 0-3m above mean low tide GCE3_CB6 -- Flat, with elevations ranging from 0-3m above mean low tide GCE3_CB8 -- Flat, with elevations ranging from 0-3m above mean low tide GCE3_MM1 -- Flat, with elevations ranging from 0-3m above mean low tide GCE3_MM3 -- Flat, with elevations ranging from 0-3m above mean low tide GCE3_MM6 -- Flat, with elevations ranging from 0-3m above mean low tide GCE3_MM8 -- Flat, with elevations ranging from 0-3m above mean low tide GCE4_CB1 -- Flat, with elevations ranging from 0-3m above mean low tide GCE4_CB12 -- Flat, with elevations ranging from 0-3m above mean low tide GCE4_CB15 -- Flat, with elevations ranging from 0-3m above mean low tide GCE4_CB17 -- Flat, with elevations ranging from 0-3m above mean low tide GCE4_CB26 -- Flat, with elevations ranging from 0-3m above mean low tide GCE4_CB3 -- Flat, with elevations ranging from 0-3m above mean low tide GCE4_CB4 -- Flat, with elevations ranging from 0-3m above mean low tide GCE4_CB46 -- Flat, with elevations ranging from 0-3m above mean low tide GCE4_CB8 -- Flat, with elevations ranging from 0-3m above mean low tide GCE4_MM1 -- Flat, with elevations ranging from 0-3m above mean low tide GCE4_MM3 -- Flat, with elevations ranging from 0-3m above mean low tide GCE4_MM4 -- Flat, with elevations ranging from 0-3m above mean low tide GCE4_MM5 -- Flat, with elevations ranging from 0-3m above mean low tide GCE4_MM6 -- Flat, with elevations ranging from 0-3m above mean low tide GCE4_MM8 -- Flat, with elevations ranging from 0-3m above mean low tide GCE5_CB1 -- Flat, with elevations ranging from 0-3m above mean low tide GCE5_CB18 -- Flat, with elevations ranging from 0-3m above mean low tide GCE5_CB2 -- Flat, with elevations ranging from 0-3m above mean low tide GCE5_CB3 -- Flat, with elevations ranging from 0-3m above mean low tide GCE5_CB33 -- Flat, with elevations ranging from 0-3m above mean low tide GCE5_CB4 -- Flat, with elevations ranging from 0-3m above mean low tide GCE5_CB6 -- Flat, with elevations ranging from 0-3m above mean low tide GCE5_CB8 -- Flat, with elevations ranging from 0-3m above mean low tide GCE5_MM1 -- Flat, with elevations ranging from 0-3m above mean low tide GCE5_MM3 -- Flat, with elevations ranging from 0-3m above mean low tide GCE5_MM6 -- Flat, with elevations ranging from 0-3m above mean low tide GCE5_MM8 -- Flat, with elevations ranging from 0-3m above mean low tide GCE6_CB1 -- Flat, with elevations ranging from 0-3m above mean low tide GCE6_CB23 -- Flat, with elevations ranging from 0-3m above mean low tide GCE6_CB36 -- Flat, with elevations ranging from 0-3m above mean low tide GCE6_CB43 -- Flat, with elevations ranging from 0-3m above mean low tide GCE6_CB6 -- Flat, with elevations ranging from 0-3m above mean low tide GCE6_CB8 -- Flat, with elevations ranging from 0-3m above mean low tide GCE6_MM1 -- Flat, with elevations ranging from 0-3m above mean low tide GCE6_MM3 -- Flat, with elevations ranging from 0-3m above mean low tide GCE6_MM6 -- Flat, with elevations ranging from 0-3m above mean low tide GCE6_MM8 -- Flat, with elevations ranging from 0-3m above mean low tide GCE7_CB1 -- Flat, with elevations ranging from 0-3m above mean low tide GCE7_CB3 -- Flat, with elevations ranging from 0-3m above mean low tide GCE7_CB6 -- Flat, with elevations ranging from 0-3m above mean low tide GCE7_CB8 -- Flat, with elevations ranging from 0-3m above mean low tide GCE7_MM1 -- Flat, with elevations ranging from 0-3m above mean low tide GCE7_MM3 -- Flat, with elevations ranging from 0-3m above mean low tide GCE7_MM6 -- Flat, with elevations ranging from 0-3m above mean low tide GCE7_MM8 -- Flat, with elevations ranging from 0-3m above mean low tide GCE8_CB12 -- Flat, with elevations ranging from 0-3m above mean low tide GCE8_CB14 -- Flat, with elevations ranging from 0-3m above mean low tide GCE8_CB21 -- Flat, with elevations ranging from 0-3m above mean low tide GCE8_CB26 -- Flat, with elevations ranging from 0-3m above mean low tide GCE8_CB28 -- Flat, with elevations ranging from 0-3m above mean low tide GCE8_CB3 -- Flat, with elevations ranging from 0-3m above mean low tide GCE8_CB31 -- Flat, with elevations ranging from 0-3m above mean low tide GCE8_MM1 -- Flat, with elevations ranging from 0-3m above mean low tide GCE8_MM11 -- Flat, with elevations ranging from 0-3m above mean low tide GCE8_MM13 -- Flat, with elevations ranging from 0-3m above mean low tide GCE8_MM18 -- Flat, with elevations ranging from 0-3m above mean low tide GCE8_MM23 -- Flat, with elevations ranging from 0-3m above mean low tide GCE8_MM6 -- Flat, with elevations ranging from 0-3m above mean low tide GCE8_MM7 -- Flat, with elevations ranging from 0-3m above mean low tide GCE9_CB11 -- Flat, with elevations ranging from 0-3m above mean low tide GCE9_CB16 -- Flat, with elevations ranging from 0-3m above mean low tide GCE9_CB18 -- Flat, with elevations ranging from 0-3m above mean low tide GCE9_CB23 -- Flat, with elevations ranging from 0-3m above mean low tide GCE9_CB26 -- Flat, with elevations ranging from 0-3m above mean low tide GCE9_CB33 -- Flat, with elevations ranging from 0-3m above mean low tide GCE9_JN1 -- Flat, with elevations ranging from 0-3m above mean low tide GCE9_JN3 -- Flat, with elevations ranging from 0-3m above mean low tide GCE9_JN6 -- Flat, with elevations ranging from 0-3m above mean low tide GCE9_JN8 -- Flat, with elevations ranging from 0-3m above mean low tide GCE9_MM1 -- Flat, with elevations ranging from 0-3m above mean low tide GCE9_MM3 -- Flat, with elevations ranging from 0-3m above mean low tide GCE9_MM6 -- Flat, with elevations ranging from 0-3m above mean low tide GCE9_MM8 -- Flat, with elevations ranging from 0-3m above mean low tide f. Geology, Lithology and Soils: GCE1 -- unspecified GCE2 -- unspecified GCE3 -- unspecified GCE4 -- unspecified GCE5 -- unspecified GCE6 -- unspecified GCE7 -- unspecified GCE8 -- unspecified GCE9 -- unspecified GCE10 -- unspecified GCE1_CB1 -- unspecified GCE1_CB13 -- unspecified GCE1_CB2 -- unspecified GCE1_CB28 -- unspecified GCE1_CB36 -- unspecified GCE1_CB38 -- unspecified GCE1_CB4 -- unspecified GCE1_CB46 -- unspecified GCE1_CB8 -- unspecified GCE1_MM1 -- unspecified GCE1_MM3 -- unspecified GCE1_MM6 -- unspecified GCE1_MM8 -- unspecified GCE10_CB1 -- unspecified GCE10_CB13 -- unspecified GCE10_CB3 -- unspecified GCE10_CB6 -- unspecified GCE10_CB8 -- unspecified GCE10_JN1 -- unspecified GCE10_JN3 -- unspecified GCE10_JN6 -- unspecified GCE10_JN8 -- unspecified GCE10_MM1 -- unspecified GCE10_MM3 -- unspecified GCE10_MM6 -- unspecified GCE10_MM8 -- unspecified GCE2_CB11 -- unspecified GCE2_CB21 -- unspecified GCE2_CB23 -- unspecified GCE2_CB38 -- unspecified GCE2_CB41 -- unspecified GCE2_CB48 -- unspecified GCE2_CB6 -- unspecified GCE2_MM1 -- unspecified GCE2_MM3 -- unspecified GCE2_MM6 -- unspecified GCE2_MM8 -- unspecified GCE3_CB1 -- unspecified GCE3_CB3 -- unspecified GCE3_CB6 -- unspecified GCE3_CB8 -- unspecified GCE3_MM1 -- unspecified GCE3_MM3 -- unspecified GCE3_MM6 -- unspecified GCE3_MM8 -- unspecified GCE4_CB1 -- unspecified GCE4_CB12 -- unspecified GCE4_CB15 -- unspecified GCE4_CB17 -- unspecified GCE4_CB26 -- unspecified GCE4_CB3 -- unspecified GCE4_CB4 -- unspecified GCE4_CB46 -- unspecified GCE4_CB8 -- unspecified GCE4_MM1 -- unspecified GCE4_MM3 -- unspecified GCE4_MM4 -- unspecified GCE4_MM5 -- unspecified GCE4_MM6 -- unspecified GCE4_MM8 -- unspecified GCE5_CB1 -- unspecified GCE5_CB18 -- unspecified GCE5_CB2 -- unspecified GCE5_CB3 -- unspecified GCE5_CB33 -- unspecified GCE5_CB4 -- unspecified GCE5_CB6 -- unspecified GCE5_CB8 -- unspecified GCE5_MM1 -- unspecified GCE5_MM3 -- unspecified GCE5_MM6 -- unspecified GCE5_MM8 -- unspecified GCE6_CB1 -- unspecified GCE6_CB23 -- unspecified GCE6_CB36 -- unspecified GCE6_CB43 -- unspecified GCE6_CB6 -- unspecified GCE6_CB8 -- unspecified GCE6_MM1 -- unspecified GCE6_MM3 -- unspecified GCE6_MM6 -- unspecified GCE6_MM8 -- unspecified GCE7_CB1 -- unspecified GCE7_CB3 -- unspecified GCE7_CB6 -- unspecified GCE7_CB8 -- unspecified GCE7_MM1 -- unspecified GCE7_MM3 -- unspecified GCE7_MM6 -- unspecified GCE7_MM8 -- unspecified GCE8_CB12 -- unspecified GCE8_CB14 -- unspecified GCE8_CB21 -- unspecified GCE8_CB26 -- unspecified GCE8_CB28 -- unspecified GCE8_CB3 -- unspecified GCE8_CB31 -- unspecified GCE8_MM1 -- unspecified GCE8_MM11 -- unspecified GCE8_MM13 -- unspecified GCE8_MM18 -- unspecified GCE8_MM23 -- unspecified GCE8_MM6 -- unspecified GCE8_MM7 -- unspecified GCE9_CB11 -- unspecified GCE9_CB16 -- unspecified GCE9_CB18 -- unspecified GCE9_CB23 -- unspecified GCE9_CB26 -- unspecified GCE9_CB33 -- unspecified GCE9_JN1 -- unspecified GCE9_JN3 -- unspecified GCE9_JN6 -- unspecified GCE9_JN8 -- unspecified GCE9_MM1 -- unspecified GCE9_MM3 -- unspecified GCE9_MM6 -- unspecified GCE9_MM8 -- unspecified g. Vegetation Communities: GCE1 -- Vegetation is 3/4 Juncus and 1/4 Spartina alterniflora, and upland area is heavily forested. GCE2 -- Spartina alterniflora all tall or medium. GCE3 -- Short and tall Spartina alterniflora, very small amounts of Juncus. GCE4 -- Vegetation is 1/4 Juncus, 3/4 medium and tall Spartina alterniflora. GCE5 -- Dominated by short and medium Spartina alterniflora, with areas of taller S. alterniflora near several small creeks. GCE6 -- Vegetation is mostly short and tall Spartina alterniflora, with small amounts of Juncus and Borrichia. GCE7 -- dominated by Zizaniopsis GCE8 -- Fringe of tall Spartina alterniflora and S. cynosuroides at creek banks. High marsh has narrow band of medium height S. alterniflora backed by vast expanses of Juncus. GCE9 -- Low marsh is tall Spartina alterniflora, high marsh has a small amount of medium Spartina alterniflora and lots of Juncus. Some hammocks with upland vegetation. GCE10 -- Vegetation mostly tall and medium Spartina alterniflora, with some Juncus present. Upland heavily forested. GCE1_CB1 -- Vegetation is 3/4 Juncus and 1/4 Spartina alterniflora, and upland area is heavily forested. GCE1_CB13 -- Vegetation is 3/4 Juncus and 1/4 Spartina alterniflora, and upland area is heavily forested. GCE1_CB2 -- Vegetation is 3/4 Juncus and 1/4 Spartina alterniflora, and upland area is heavily forested. GCE1_CB28 -- Vegetation is 3/4 Juncus and 1/4 Spartina alterniflora, and upland area is heavily forested. GCE1_CB36 -- Vegetation is 3/4 Juncus and 1/4 Spartina alterniflora, and upland area is heavily forested. GCE1_CB38 -- Vegetation is 3/4 Juncus and 1/4 Spartina alterniflora, and upland area is heavily forested. GCE1_CB4 -- Vegetation is 3/4 Juncus and 1/4 Spartina alterniflora, and upland area is heavily forested. GCE1_CB46 -- Vegetation is 3/4 Juncus and 1/4 Spartina alterniflora, and upland area is heavily forested. GCE1_CB8 -- Vegetation is 3/4 Juncus and 1/4 Spartina alterniflora, and upland area is heavily forested. GCE1_MM1 -- Vegetation is 3/4 Juncus and 1/4 Spartina alterniflora, and upland area is heavily forested. GCE1_MM3 -- Vegetation is 3/4 Juncus and 1/4 Spartina alterniflora, and upland area is heavily forested. GCE1_MM6 -- Vegetation is 3/4 Juncus and 1/4 Spartina alterniflora, and upland area is heavily forested. GCE1_MM8 -- Vegetation is 3/4 Juncus and 1/4 Spartina alterniflora, and upland area is heavily forested. GCE10_CB1 -- Vegetation mostly tall and medium Spartina alterniflora, with some Juncus present. Upland heavily forested. GCE10_CB13 -- Vegetation mostly tall and medium Spartina alterniflora, with some Juncus present. Upland heavily forested. GCE10_CB3 -- Vegetation mostly tall and medium Spartina alterniflora, with some Juncus present. Upland heavily forested. GCE10_CB6 -- Vegetation mostly tall and medium Spartina alterniflora, with some Juncus present. Upland heavily forested. GCE10_CB8 -- Vegetation mostly tall and medium Spartina alterniflora, with some Juncus present. Upland heavily forested. GCE10_JN1 -- Vegetation mostly tall and medium Spartina alterniflora, with some Juncus present. Upland heavily forested. GCE10_JN3 -- Vegetation mostly tall and medium Spartina alterniflora, with some Juncus present. Upland heavily forested. GCE10_JN6 -- Vegetation mostly tall and medium Spartina alterniflora, with some Juncus present. Upland heavily forested. GCE10_JN8 -- Vegetation mostly tall and medium Spartina alterniflora, with some Juncus present. Upland heavily forested. GCE10_MM1 -- Vegetation mostly tall and medium Spartina alterniflora, with some Juncus present. Upland heavily forested. GCE10_MM3 -- Vegetation mostly tall and medium Spartina alterniflora, with some Juncus present. Upland heavily forested. GCE10_MM6 -- Vegetation mostly tall and medium Spartina alterniflora, with some Juncus present. Upland heavily forested. GCE10_MM8 -- Vegetation mostly tall and medium Spartina alterniflora, with some Juncus present. Upland heavily forested. GCE2_CB11 -- Spartina alterniflora all tall or medium. GCE2_CB21 -- Spartina alterniflora all tall or medium. GCE2_CB23 -- Spartina alterniflora all tall or medium. GCE2_CB38 -- Spartina alterniflora all tall or medium. GCE2_CB41 -- Spartina alterniflora all tall or medium. GCE2_CB48 -- Spartina alterniflora all tall or medium. GCE2_CB6 -- Spartina alterniflora all tall or medium. GCE2_MM1 -- Spartina alterniflora all tall or medium. GCE2_MM3 -- Spartina alterniflora all tall or medium. GCE2_MM6 -- Spartina alterniflora all tall or medium. GCE2_MM8 -- Spartina alterniflora all tall or medium. GCE3_CB1 -- Short and tall Spartina alterniflora, very small amounts of Juncus. GCE3_CB3 -- Short and tall Spartina alterniflora, very small amounts of Juncus. GCE3_CB6 -- Short and tall Spartina alterniflora, very small amounts of Juncus. GCE3_CB8 -- Short and tall Spartina alterniflora, very small amounts of Juncus. GCE3_MM1 -- Short and tall Spartina alterniflora, very small amounts of Juncus. GCE3_MM3 -- Short and tall Spartina alterniflora, very small amounts of Juncus. GCE3_MM6 -- Short and tall Spartina alterniflora, very small amounts of Juncus. GCE3_MM8 -- Short and tall Spartina alterniflora, very small amounts of Juncus. GCE4_CB1 -- Vegetation is 1/4 Juncus, 3/4 medium and tall Spartina alterniflora. GCE4_CB12 -- Vegetation is 1/4 Juncus, 3/4 medium and tall Spartina alterniflora. GCE4_CB15 -- Vegetation is 1/4 Juncus, 3/4 medium and tall Spartina alterniflora. GCE4_CB17 -- Vegetation is 1/4 Juncus, 3/4 medium and tall Spartina alterniflora. GCE4_CB26 -- Vegetation is 1/4 Juncus, 3/4 medium and tall Spartina alterniflora. GCE4_CB3 -- Vegetation is 1/4 Juncus, 3/4 medium and tall Spartina alterniflora. GCE4_CB4 -- Vegetation is 1/4 Juncus, 3/4 medium and tall Spartina alterniflora. GCE4_CB46 -- Vegetation is 1/4 Juncus, 3/4 medium and tall Spartina alterniflora. GCE4_CB8 -- Vegetation is 1/4 Juncus, 3/4 medium and tall Spartina alterniflora. GCE4_MM1 -- Vegetation is 1/4 Juncus, 3/4 medium and tall Spartina alterniflora. GCE4_MM3 -- Vegetation is 1/4 Juncus, 3/4 medium and tall Spartina alterniflora. GCE4_MM4 -- Vegetation is 1/4 Juncus, 3/4 medium and tall Spartina alterniflora. GCE4_MM5 -- Vegetation is 1/4 Juncus, 3/4 medium and tall Spartina alterniflora. GCE4_MM6 -- Vegetation is 1/4 Juncus, 3/4 medium and tall Spartina alterniflora. GCE4_MM8 -- Vegetation is 1/4 Juncus, 3/4 medium and tall Spartina alterniflora. GCE5_CB1 -- Dominated by short and medium Spartina alterniflora, with areas of taller S. alterniflora near several small creeks. GCE5_CB18 -- Dominated by short and medium Spartina alterniflora, with areas of taller S. alterniflora near several small creeks. GCE5_CB2 -- Dominated by short and medium Spartina alterniflora, with areas of taller S. alterniflora near several small creeks. GCE5_CB3 -- Dominated by short and medium Spartina alterniflora, with areas of taller S. alterniflora near several small creeks. GCE5_CB33 -- Dominated by short and medium Spartina alterniflora, with areas of taller S. alterniflora near several small creeks. GCE5_CB4 -- Dominated by short and medium Spartina alterniflora, with areas of taller S. alterniflora near several small creeks. GCE5_CB6 -- Dominated by short and medium Spartina alterniflora, with areas of taller S. alterniflora near several small creeks. GCE5_CB8 -- Dominated by short and medium Spartina alterniflora, with areas of taller S. alterniflora near several small creeks. GCE5_MM1 -- Dominated by short and medium Spartina alterniflora, with areas of taller S. alterniflora near several small creeks. GCE5_MM3 -- Dominated by short and medium Spartina alterniflora, with areas of taller S. alterniflora near several small creeks. GCE5_MM6 -- Dominated by short and medium Spartina alterniflora, with areas of taller S. alterniflora near several small creeks. GCE5_MM8 -- Dominated by short and medium Spartina alterniflora, with areas of taller S. alterniflora near several small creeks. GCE6_CB1 -- Vegetation is mostly short and tall Spartina alterniflora, with small amounts of Juncus and Borrichia. GCE6_CB23 -- Vegetation is mostly short and tall Spartina alterniflora, with small amounts of Juncus and Borrichia. GCE6_CB36 -- Vegetation is mostly short and tall Spartina alterniflora, with small amounts of Juncus and Borrichia. GCE6_CB43 -- Vegetation is mostly short and tall Spartina alterniflora, with small amounts of Juncus and Borrichia. GCE6_CB6 -- Vegetation is mostly short and tall Spartina alterniflora, with small amounts of Juncus and Borrichia. GCE6_CB8 -- Vegetation is mostly short and tall Spartina alterniflora, with small amounts of Juncus and Borrichia. GCE6_MM1 -- Vegetation is mostly short and tall Spartina alterniflora, with small amounts of Juncus and Borrichia. GCE6_MM3 -- Vegetation is mostly short and tall Spartina alterniflora, with small amounts of Juncus and Borrichia. GCE6_MM6 -- Vegetation is mostly short and tall Spartina alterniflora, with small amounts of Juncus and Borrichia. GCE6_MM8 -- Vegetation is mostly short and tall Spartina alterniflora, with small amounts of Juncus and Borrichia. GCE7_CB1 -- dominated by Zizaniopsis GCE7_CB3 -- dominated by Zizaniopsis GCE7_CB6 -- dominated by Zizaniopsis GCE7_CB8 -- dominated by Zizaniopsis GCE7_MM1 -- dominated by Zizaniopsis GCE7_MM3 -- dominated by Zizaniopsis GCE7_MM6 -- dominated by Zizaniopsis GCE7_MM8 -- dominated by Zizaniopsis GCE8_CB12 -- Fringe of tall Spartina alterniflora and S. cynosuroides at creek banks. High marsh has narrow band of medium height S. alterniflora backed by vast expanses of Juncus. GCE8_CB14 -- Fringe of tall Spartina alterniflora and S. cynosuroides at creek banks. High marsh has narrow band of medium height S. alterniflora backed by vast expanses of Juncus. GCE8_CB21 -- Fringe of tall Spartina alterniflora and S. cynosuroides at creek banks. High marsh has narrow band of medium height S. alterniflora backed by vast expanses of Juncus. GCE8_CB26 -- Fringe of tall Spartina alterniflora and S. cynosuroides at creek banks. High marsh has narrow band of medium height S. alterniflora backed by vast expanses of Juncus. GCE8_CB28 -- Fringe of tall Spartina alterniflora and S. cynosuroides at creek banks. High marsh has narrow band of medium height S. alterniflora backed by vast expanses of Juncus. GCE8_CB3 -- Fringe of tall Spartina alterniflora and S. cynosuroides at creek banks. High marsh has narrow band of medium height S. alterniflora backed by vast expanses of Juncus. GCE8_CB31 -- Fringe of tall Spartina alterniflora and S. cynosuroides at creek banks. High marsh has narrow band of medium height S. alterniflora backed by vast expanses of Juncus. GCE8_MM1 -- Fringe of tall Spartina alterniflora and S. cynosuroides at creek banks. High marsh has narrow band of medium height S. alterniflora backed by vast expanses of Juncus. GCE8_MM11 -- Fringe of tall Spartina alterniflora and S. cynosuroides at creek banks. High marsh has narrow band of medium height S. alterniflora backed by vast expanses of Juncus. GCE8_MM13 -- Fringe of tall Spartina alterniflora and S. cynosuroides at creek banks. High marsh has narrow band of medium height S. alterniflora backed by vast expanses of Juncus. GCE8_MM18 -- Fringe of tall Spartina alterniflora and S. cynosuroides at creek banks. High marsh has narrow band of medium height S. alterniflora backed by vast expanses of Juncus. GCE8_MM23 -- Fringe of tall Spartina alterniflora and S. cynosuroides at creek banks. High marsh has narrow band of medium height S. alterniflora backed by vast expanses of Juncus. GCE8_MM6 -- Fringe of tall Spartina alterniflora and S. cynosuroides at creek banks. High marsh has narrow band of medium height S. alterniflora backed by vast expanses of Juncus. GCE8_MM7 -- Fringe of tall Spartina alterniflora and S. cynosuroides at creek banks. High marsh has narrow band of medium height S. alterniflora backed by vast expanses of Juncus. GCE9_CB11 -- Low marsh is tall Spartina alterniflora, high marsh has a small amount of medium Spartina alterniflora and lots of Juncus. Some hammocks with upland vegetation. GCE9_CB16 -- Low marsh is tall Spartina alterniflora, high marsh has a small amount of medium Spartina alterniflora and lots of Juncus. Some hammocks with upland vegetation. GCE9_CB18 -- Low marsh is tall Spartina alterniflora, high marsh has a small amount of medium Spartina alterniflora and lots of Juncus. Some hammocks with upland vegetation. GCE9_CB23 -- Low marsh is tall Spartina alterniflora, high marsh has a small amount of medium Spartina alterniflora and lots of Juncus. Some hammocks with upland vegetation. GCE9_CB26 -- Low marsh is tall Spartina alterniflora, high marsh has a small amount of medium Spartina alterniflora and lots of Juncus. Some hammocks with upland vegetation. GCE9_CB33 -- Low marsh is tall Spartina alterniflora, high marsh has a small amount of medium Spartina alterniflora and lots of Juncus. Some hammocks with upland vegetation. GCE9_JN1 -- Low marsh is tall Spartina alterniflora, high marsh has a small amount of medium Spartina alterniflora and lots of Juncus. Some hammocks with upland vegetation. GCE9_JN3 -- Low marsh is tall Spartina alterniflora, high marsh has a small amount of medium Spartina alterniflora and lots of Juncus. Some hammocks with upland vegetation. GCE9_JN6 -- Low marsh is tall Spartina alterniflora, high marsh has a small amount of medium Spartina alterniflora and lots of Juncus. Some hammocks with upland vegetation. GCE9_JN8 -- Low marsh is tall Spartina alterniflora, high marsh has a small amount of medium Spartina alterniflora and lots of Juncus. Some hammocks with upland vegetation. GCE9_MM1 -- Low marsh is tall Spartina alterniflora, high marsh has a small amount of medium Spartina alterniflora and lots of Juncus. Some hammocks with upland vegetation. GCE9_MM3 -- Low marsh is tall Spartina alterniflora, high marsh has a small amount of medium Spartina alterniflora and lots of Juncus. Some hammocks with upland vegetation. GCE9_MM6 -- Low marsh is tall Spartina alterniflora, high marsh has a small amount of medium Spartina alterniflora and lots of Juncus. Some hammocks with upland vegetation. GCE9_MM8 -- Low marsh is tall Spartina alterniflora, high marsh has a small amount of medium Spartina alterniflora and lots of Juncus. Some hammocks with upland vegetation. h. History of Land Use and Disturbance: GCE1 -- Oct 01, 2000: Permanent plots were established in two nominal marsh zones based on marsh structure -- creek zone and high marsh -- and eight plots were randomly located in each zone and marked with stakes. Oct 01, 2001: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No significant disturbance was observed, and no plots were replaced. Oct 16, 2002: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack (some have no shoots): C4, C5, C6, C7, C8. The following creekbank plots are on creekbank areas that are collapsing: C5, C6, C8. No disturbance by animal activity was observed and no plots were replaced. Oct 18, 2003: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following creekbank plots are on creekbank areas that are collapsing: C5, C6, C7 and C8. No disturbance by wrack or wildlife activity was observed, and no plots were replaced. Oct 25, 2004: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: C7, C8. No disturbance by wrack or wildlife activity was observed, and no plots were replaced. Oct 21, 2005: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: C5, C6. The following plots are on creekbank areas that are collapsing: C18. No disturbance by wrack or wildlife activity was observed, and no plots were replaced. Oct 16, 2006: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: C2, C16. No disturbance by wrack or wildlife activity was observed, and no plots were replaced. Oct 22, 2007: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: C3, C15. The following plots were disturbed by wrack or wildlife activity: C17, C18, C25. The following plots are on creekbank areas that are collapsing: C18. No plots were replaced. Oct 27, 2008: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: C25, C26. The following plots were disturbed by wrack: C17, C18, C36. The following plots were distrurbed by wildlife (some may have no shoots): none. The following plots are on creekbank areas that are collapsing: none. No plots were replaced. Oct 16, 2009: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C7. No plots were disturbed or lost, and none were replaced. Oct 19, 2010: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C4, C17, C18, C36. The following plots are on creekbank areas that are collapsing: C4, C12, C18, C36. No plots were disturbed by wildlife and none were lost and replaced. Oct 25, 2011: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity and were replaced: C36 (now C46), C17 (now C27), C18 (now C28). Oct 13, 2012: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed due to creekbank: C27, C36. No plots were disturbed by wrack or wildlife activity, and none were replaced. Oct 16, 2013: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C27. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife: C25 (replaced by C35), C26 (replaced by C36). Oct 17, 2014: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No disturbance was noted; however, plots C35, C36 and C28 were renumbered as C45, C46 and C38, but in the same location for unspecified reasons. Oct 20, 2015: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C4, C46, C27, C38. The following plots are on creekbank areas that are collapsing (slumping): C4, C45, C27, C38. No plots were disturbed by wildlife. GCE2 -- Oct 01, 2000: Permanent plots were established in two nominal marsh zones based on marsh structure -- creek zone and high marsh -- and eight plots were randomly located in each zone and marked with stakes. Oct 01, 2001: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. Plot C6 was disturbed by wrack and Plots C3 and C4 were disturbed by creekbank slumping. Not plots were lost and none were replaced. Oct 18, 2002: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack (some have no shoots): C4, C5, C6. The following creekbank plots are on creekbank areas that are collapsing: C2, C6. The following plots were lost due to creekbank erosion or catastrophic wrack disturbance: C1 (replaced with C11). No disturbance by animal activity was observed. Oct 19, 2003: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following creekbank plots are on creekbank areas that are collapsing: C2. No disturbance by wrack or wildlife activity was observed, and no plots were replaced. Oct 22, 2004: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C4, C6, C8. No disturbance by wildlife activity was observed, and no plots were replaced. Oct 21, 2005: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots are on creekbank areas that are collapsing: C2, C4. No disturbance by wrack or wildlife activity was observed, no plots were lost due to creekbank erosion, and no plots were replaced. Oct 17, 2006: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C12, C4, C6. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: C2. The following plots were lost for unknown reasons: C8. No plots were disturbed by wildlife, and no plots were replaced. Oct 23, 2007: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: C4, C12, C13, C18. The following plots were disturbed by wrack or wildlife activity: C6, C7, C11, C22, C23. The following plots are on creekbank areas that are collapsing: C18. No plots were replaced. Oct 28, 2008: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: C22, C28. The following plots were disturbed by wrack: none. The following plots were distrurbed by wildlife (some may have no shoots): none. The following plots are on creekbank areas that are collapsing: none. No plots were replaced. Oct 15, 2009: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No plots were disturbed or lost, and none were replaced. Oct 19, 2010: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots are on creekbank areas that are collapsing: C5, C7, C11, C38. The following plots were lost due to creekbank erosion or catastrophic wrack disturbance: C14, C23 (replaced with C24 and C33, resp.). No plots were disturbed by wrack or wildlife. Oct 25, 2011: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C7. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity and were replaced: C11 (now C21), C38 (now C48) Oct 13, 2012: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by creek bank erosion adjacent to the plot: C17, C24, C42. The following plot was disturbed by wrack: M4. No plots were lost or replaced. Oct 16, 2013: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife: C21 (replaced with C31), C5 (replaced with C15), C17 (replaced with 27). Oct 16, 2014: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance or catastrophic wildlife activity: C31, C27 (replaced with C41, C37, resp). Oct 22, 2015: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C6. The following plots are on creekbank areas that are collapsing (slumping): C41, C42, C33, C24, C15, C48. No plots were disturbed by wildlife and none were lost and replaced. GCE3 -- Oct 01, 2000: Permanent plots were established in two nominal marsh zones based on marsh structure -- creek zone and high marsh -- and eight plots were randomly located in each zone and marked with stakes. Oct 01, 2001: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No significant disturbance was observed, and no plots were replaced. Oct 20, 2002: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack (some have no shoots): C4, C5, C6, C7, C8. The following plots were disturbed by wildlife (some have no shoots): M2, M5, M6, M7, M8 (snails). The following creekbank plots are on creekbank areas that are collapsing: C8. No plots were replaced. Oct 19, 2003: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack (some have no shoots): C3, C4. The following plots were disturbed by wildlife (some have no shoots): M5, M6. The following creekbank plots are on creekbank areas that are collapsing: C8. The following plots were disturbed by marsh dieback: M7. No plots were lost due to creekbank erosion or catastrophic wrack inundation, and not plots were replaced. Oct 24, 2004: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C1, C2, C3, C4, C5, C6, C7. The following plots were disturbed by wildlife (some have no shoots): M5, M7. No plots were lost due to creekbank erosion or catastrophic wrack inundation, and not plots were replaced. Oct 21, 2005: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No disturbance by wrack or wildlife activity was observed, no plots were lost due to creekbank erosion, and no plots were replaced. Oct 15, 2006: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C1, C2, C3, C4, C5, C6 (plot C3 has no shoots). The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: C6. No plots were disturbed by wildlife, and no plots were replaced. Oct 24, 2007: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack or wildlife activity: C1, C2, C3, C4. No plots were lost and none were replaced. Oct 26, 2008: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: none. The following plots were disturbed by wrack: C1, C2, C3. The following plots were distrurbed by wildlife (some may have no shoots): M5. The following plots are on creekbank areas that are collapsing: none. No plots were replaced. Oct 17, 2009: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No plots were disturbed or lost, and none were replaced. Oct 20, 2010: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No plots were disturbed or lost, and none were replaced. Oct 27, 2011: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No plots were disturbed and none were replaced. Oct 14, 2012: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No plots were disturbed and none were replaced, but the following plots were observed to be too far from the creek bank and may be repositioned in the future: C7, C8. A new creek bank tributary is also forming near C5. Oct 18, 2013: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C1, C4. The following plots were disturbed by wildlife: M6. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife: C5 (replaced with C15), C17 (replaced with 27). Oct 18, 2014: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C17. Not plots were lost and none were replaced. Oct 25, 2015: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C11. The following plots are on creekbank areas that are collapsing (slumping): C11, C12, C14, C28. The following plots were lost due to terminal slumping of the creekbank: C15, C17 (replaced with C25, C27). No plots were disturbed by wildlife and none were lost and replaced. GCE4 -- Oct 01, 2000: Permanent plots were established in two nominal marsh zones based on marsh structure -- creek zone and high marsh -- and eight plots were randomly located in each zone and marked with stakes. Oct 01, 2001: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No significant disturbance was observed, and no plots were replaced. Oct 18, 2002: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack (some have no shoots): C4. The following plots were disturbed by wildlife (some have no shoots): M6, M8 (snails). No plots were disturbed by creekbank erosion or replaced. Oct 18, 2003: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following creekbank plots are on creekbank areas that are collapsing: C5, C8. No disturbance by wrack or wildlife activity were observed, and no plots were replaced. Oct 25, 2004: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C4. The following creekbank plots are on creekbank areas that are collapsing: C6. No plots were distrurbed by wildlife and no plots were lost or replaced. Oct 21, 2005: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots are on creekbank areas that are collapsing: C6. No disturbance by wrack or wildlife activity was observed, no plots were lost due to creekbank erosion, and no plots were replaced. Oct 16, 2006: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C2, C3, C16. No plots were lost or disturbed by wildlife, and none were replaced. Oct 22, 2007: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: C5, C7, C16. The following plots were disturbed by wrack or wildlife activity: C15, C26, M1, M3. No plots were replaced. Oct 27, 2008: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: C2. The following plots were disturbed by wrack: none. The following plots were distrurbed by wildlife (some may have no shoots): M3 (no shoots). The following plots are on creekbank areas that are collapsing: none. No plots were replaced. Oct 16, 2009: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wildlife: M3 (snails). No plots were disturbed by wrack or were on creekbank areas that are collapsing, and no plots were replaced. Oct 21, 2010: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance or catastrophic wildlife activity: C26 (replaced with C36). No plots were disturbed by wrack or wildlife or are on creekbank areas that are collapsing. Oct 25, 2011: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C3, C15. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity and were replaced: C36 (now C46). Oct 13, 2012: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No plots were disturbed and none were replaced, but C25 was slightly reposition due to nearby creekbank erosion. Oct 16, 2013: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No plots were disturbed and none were replaced, but C25 was slightly reposition due to nearby creekbank erosion. Oct 17, 2014: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No disturbance was noted, and not plots were replaced. Oct 20, 2015: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots are on creekbank areas that are collapsing (slumping): C3, C4, C5, C6. The following plots were lost due to terminal slumping of the creekbank: C1 (replaced with C11). No plots were disturbed by wildlife. GCE5 -- Oct 01, 2000: Permanent plots were established in two nominal marsh zones based on marsh structure -- creek zone and high marsh -- and eight plots were randomly located in each zone and marked with stakes. Oct 01, 2001: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No significant disturbance was observed, and no plots were replaced. Oct 15, 2002: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following creekbank plots are on creekbank areas that are collapsing: C6, C7. No disturbance by wrack inundation or animal activity was observed, and no plots were replaced. Oct 18, 2003: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following creekbank plots are on creekbank areas that are collapsing: C7. No disturbance by wrack or wildlife activity were observed, and no plots were replaced. Oct 23, 2004: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C1, C5. No plots were replaced. Oct 21, 2005: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C7, C8. No plots were distrurbed by wildlife, none were lost due to creekbank erosion, and none were replaced. Oct 17, 2006: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C1, C2. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: C6. No plots were disturbed by wildlife and none were replaced. Oct 21, 2007: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack or wildlife activity: C2, C4, C5, M2. No plots were lost and none were replaced. Oct 28, 2008: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: none. The following plots were disturbed by wrack: C3, C5. The following plots were distrurbed by wildlife (some may have no shoots): none. The following plots are on creekbank areas that are collapsing: none. No plots were replaced. Oct 15, 2009: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots are on creekbank areas that are collapsing: C3. No plots were disturbed by wildlife and no plots were lost and replaced. Oct 19, 2010: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following creekbank plots are on creekbank areas that are collapsing: C5. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: C3 (replaced with C13). No plots were disturbed by wrack or wildlife. Oct 25, 2011: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C7, C8. The following plots are on sections of creek bank that are collapsing: C5. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity and were replaced: C3 (now C13). Oct 13, 2012: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plot was disturbed by nearby creekbank erosion: C13. The following plots were disturbed by wrack: C4, C5. Also, two missing markers were replaced at M5. Oct 15, 2013: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife: C13 (replaced with C23). Note that C8 was relabeled as C18 for unspecified reasons. Oct 16, 2014: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C5. The following plots were lost due to creekbank slumping: C23 (replaced with C33). Oct 21, 2015: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C2, C5. The following plots are on creekbank areas that are collapsing (slumping): C2, C5, C16, C7. No plots were disturbed by wildlife or lost and replaced. GCE6 -- Oct 01, 2000: Permanent plots were established in two nominal marsh zones based on marsh structure -- creek zone and high marsh -- and eight plots were randomly located in each zone and marked with stakes Oct 01, 2001: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to catastrophic disturbance and replaced with new plots as indicated: zone 1, plot 3 (not replaced). Oct 19, 2002: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack (some have no shoots): C1. The following plots were disturbed by wildlife (some have no shoots): M6, M7, M8 (snails). The following creekbank plots are on creekbank areas that are collapsing: C4, C5. No plots were replaced. Oct 17, 2003: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wildlife (some have no shoots): M8. The following creekbank plots are on creekbank areas that are collapsing: C5. The following plots were lost due to creekbank erosion or catastrophic wrack inundation and were replaced: C2, C4 (replaced with C12, C14). Oct 22, 2004: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C1, C12, C23, C5, C6, C8. The following plots were disturbed by wildlife (some have no shoots): M8. No plots were lost due to creekbank erosion, and none were replaced. Oct 21, 2005: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C5, C12. The following plots were disturbed by wildlife: M8. No plots were lost due to creekbank erosion, and none were replaced. Oct 15, 2006: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C1, C23, C6, C7 (C1, C23 have no plants). The following plots were disturbed by wildlife (some have no shoots): M8. The following creekbank plots are on creekbank areas that are collapsing: C12, C14, C5. No plots were lost and none were replaced. Oct 23, 2007: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: C5, C14, C22. The following plots were disturbed by wrack or wildlife activity: C15, C16, C23, M8. No plots were replaced. Oct 26, 2008: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: C24. The following plots were disturbed by wrack: C23. The following plots were distrurbed by wildlife (some may have no shoots): M8 (no shoots). The following plots are on creekbank areas that are collapsing: C22, C23. No plots were replaced. Oct 16, 2009: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: C22, C23. No other plots were disturbed by wildlife or wrack, and none were replaced. Oct 20, 2010: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C6. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: C32 (replaced with C42). No plots were disturbed by wildlife or are on creekbank areas that are collapsing. Oct 25, 2011: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots are located on sections of creek bank that are collapsing: C6, C33. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity and were replaced: C15 (now C25). Oct 15, 2012: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C1, C6, C8, C33, C34. No plots were disturbed by creekbank erosion or wildlife, but no living plants were observed in C34 and M5 is now in an apparent die-back zone. Oct 16, 2013: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife: C15 (replaced with C25), C16 (replaced with C26), C8 (replaced with 18). Oct 18, 2014: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No disturbance was noted, and no plots were lost; however, plots C33, C34 and C26 were relabeled as C43, C44 and C36, resp. for unspecified reasons. Oct 15, 2015: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: M2. The following plots are on creekbank areas that are collapsing (slumping): C42, C36. The following plots were lost due to terminal slumping of the creekbank: C43, C44, C25 (replaced with C53, C54, C35). No plots were disturbed by wildlife. GCE7 -- Oct 01, 2000: Permanent plots were established in two nominal marsh zones based on marsh structure -- creek zone and high marsh -- and eight plots were randomly located in each zone and marked with stakes Oct 01, 2001: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No significant disturbance was observed, and no plots were replaced. Oct 17, 2002: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No significant disturbance was observed, and no plots were replaced. Oct 17, 2003: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No evidence of plot disturbance was observed, and no plots were replaced. Oct 23, 2004: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No evidence of plot disturbance was observed, and no plots were replaced. Oct 21, 2005: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No plots were distrurbed by wildlife, none were lost due to creekbank erosion, and none were replaced. Oct 14, 2006: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following creekbank plots are on creekbank areas that are collapsing: C7. No plots were disturbed by wrack or wildlife, and none were replaced. Oct 20, 2007: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No plots were lost or disturbed by wrack or wildlife, and none were replaced. Oct 25, 2008: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: none. The following plots were disturbed by wrack: none. The following plots were distrurbed by wildlife (some may have no shoots): none. The following plots are on creekbank areas that are collapsing: none. No plots were replaced. Oct 14, 2009: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No plots were disturbed or lost, and none were replaced. Oct 18, 2010: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No plots were disturbed or lost, and none were replaced. Oct 24, 2011: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity and were replaced: C2 (now C12). Oct 12, 2012: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No plots were disturbed by creekbank erosion, wrack or wildlife, and none were replaced. Oct 14, 2013: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following creekbank plots are on creekbank areas that are collapsing: C7. No plots were lost and none were replaced. Oct 20, 2014: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No disturbance was noted, and no plots were replaced. Oct 23, 2015: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots are on creekbank areas that are collapsing (slumping): C3, C7. No plots were disturbed by wrack or wildlife and none were lost and replaced. GCE8 -- Oct 01, 2000: Permanent plots were established in two nominal marsh zones based on marsh structure -- creek zone and high marsh -- and eight plots were randomly located in each zone and marked with stakes Oct 01, 2001: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to catastrophic disturbance and replaced with new plots as indicated: zone 1 plots 5, 6, 7, 8 (added new plots 15, 16, 17, 18). New plots were not in exactly the same locations as lost plots, and so have new numbers. Oct 17, 2002: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack (some have no shoots): C4. The following plots were disturbed by wildlife (some have no shoots): M2, M3, M4, M7 (pigs). No disturbance due to creekbank collapse was observed, and no plots were replaced. Oct 17, 2003: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wildlife (some have no shoots): M2, M4. The following creekbank plots are on creekbank areas that are collapsing: C2. No disturbance by wrack was observed, but plot M8 was merging with the path and was relocated as M18. Oct 23, 2004: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wildlife (some have no shoots): M2. The following creekbank plots are on creekbank areas that are collapsing: C2. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: M3. No plots were replaced. Oct 21, 2005: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots are on creekbank areas that are collapsing: C2, C16. The following plots were disturbed by wildlife: M1, M4. No plots were lost due to creekbank erosion, and none were replaced. Oct 14, 2006: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: C1, C4, C15, C16, C17, C18. The following plots had no live shoots due to seasonal senescence: M2. No plots were disturbed by wrack or wildlife, and none were replaced. Oct 20, 2007: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost for unknown reasons: C2, C11. The following plots were disturbed by wrack or wildlife activity: M1, M2, M7, M13. No plots were replaced. Oct 25, 2008: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: none. The following plots were disturbed by wrack: C26, M4. The following plots were distrurbed by wildlife (some may have no shoots): none. The following plots are on creekbank areas that are collapsing: none. No plots were replaced. Oct 14, 2009: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wildlife: M1, M2 (pigs). No plots were disturbed by wrack or were on creekbank areas that are collapsing, and no plots were lost or replaced. Oct 18, 2010: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C26. The following plots were disturbed by wildlife (some may have no shoots): M1, M2, M13 (pigs). The following creekbank plots are on creekbank areas that are collapsing: C12, C14. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: C27, C28 (replaced with C37, C38 resp.). Oct 24, 2011: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots are on sections of creek bank that are collapsing: C25. The following plots were disturbed by wildlife and may have no shoots: M2, M13, M18. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity and were replaced: M1 (now M11). Oct 12, 2012: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wildlife: M1, M2, M6, M7, M18. The following plot was lost due to creekbank erosion: C21 (replaced by C31). Also, no living plants were observed in plots M1, M2. Oct 14, 2013: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wildlife (some may have no shoots): M1, M2, M13 (pigs). The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife: C25 (replaced with C35). Oct 21, 2014: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No disturbance was recorded, but plots C35, M1, M2 and M13 were renumbered as C45, M11, M12 and M23 for unspecified reasons. Oct 23, 2015: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C3. The following plots are on creekbank areas that are collapsing (slumping): C14. No plots were disturbed by wildlife and none were lost and replaced. GCE9 -- Oct 01, 2000: Permanent plots were established in two nominal marsh zones based on marsh structure -- creek zone and high marsh -- and eight plots were randomly located in each zone and marked with stakes. Oct 01, 2001: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to catastrophic disturbance and replaced with new plots as indicated: zone 1, plot 4 (added new plot 14). New plots were not in exactly the same locations as lost plots, and so have new numbers. Oct 17, 2002: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack (some have no shoots): C5, C6, C8. The following creekbank plots are on creekbank areas that are collapsing: C1, C6. The following plots were lost due to creekbank erosion or catastrophic wrack disturbance: C3 (replaced with C13). No disturbance by wildlife activity was observed. Oct 18, 2003: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack (some have no shoots): C1, C2, C6, C13. The following creekbank plots are on creekbank areas that are collapsing: C1, C2, C6. The following plots were lost due to creekbank erosion or catastrophic wrack inundation and were replaced: C5, C7, C8 (replaced with C15, C17, C18). No disturbance by wildlife activity was observed. Oct 23, 2004: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C13, C14, C6. No disturbance by wildlife activity was observed, and no plots were lost or replaced. Oct 21, 2005: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C2, C18. No plots were distrurbed by wildlife, none were lost due to creekbank erosion, and none were replaced. Oct 14, 2006: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C14. No plots were disturbed by wildlife or lost, and none were replaced. Oct 21, 2007: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack or wildlife activity: C1, C2, C13. No plots were lost and none were replaced. Oct 25, 2008: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: none. The following plots were disturbed by wrack: C2. The following plots were distrurbed by wildlife (some may have no shoots): none. The following plots are on creekbank areas that are collapsing: C1, C13, C16. No plots were replaced. Oct 15, 2009: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: C1, C13. The following plots were disturbed by wrack: C16. No plots were otherwise disturbed by wildlife or are on creekbank areas that are collapsing and none were replaced. Oct 21, 2010: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C16. The following plots are on creekbank areas that are collapsing: C16, C23. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: C2, C11, C14 (replaced with C12, C21 and C24, resp.). No plots were disturbed by wildlife. Oct 24, 2011: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C24. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity and were replaced: C16 (now C26), C23 (now C32). Oct 12, 2012: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No plots were disturbed by creekbank erosion, wrack or wildlife, and none were replaced. Oct 15, 2013: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following creekbank plots are on creekbank areas that are collapsing: C18. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife: C21 (replaced with C31), C33 (replaced with C43). Oct 15, 2014: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No disturbance was observed, and no plots were replaced. Oct 21, 2015: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No disturbance was observed, and no plots were replaced. GCE10 -- Oct 01, 2000: Permanent plots were established in two nominal marsh zones based on marsh structure -- creek zone and high marsh -- and eight plots were randomly located in each zone and marked with stakes Oct 01, 2001: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No significant disturbance was observed, and no plots were replaced. Oct 20, 2002: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack (some have no shoots): C1, C2, C3, C4, C5, C6, C8. The following plots were disturbed by wildlife (some have no shoots): M5 (snails). No disturbance by creekbank erosion or collapse was observed, and no plots were replaced. Oct 19, 2003: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack (some have no shoots): C3, M1. The following plots were disturbed by wildlife (some have no shoots): M5. The following creekbank plots are on creekbank areas that are collapsing: C2. No plots were replaced. Oct 22, 2004: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C7. No disturbance by wildlife was observed, and no plots were lost or replaced. Oct 21, 2005: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No plots were distrurbed by wildlife, none were lost due to creekbank erosion, and none were replaced. Oct 15, 2006: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. Note that a new zone (zone 3) was added at site GCE10 in 2005. This is a juncus zone in the high marsh. Oct 24, 2007: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack or wildlife activity: C1, C2, C3, C4, C8, M1, M2. The following plots are on creekbank areas that are collapsing: C13. No plots were lost and none were replaced. Oct 26, 2008: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were lost due to creekbank erosion, catastrophic wrack disturbance, or catastrophic wildlife activity: none. The following plots were disturbed by wrack: none. The following plots were distrurbed by wildlife (some may have no shoots): none. The following plots are on creekbank areas that are collapsing: none. No plots were replaced. Oct 17, 2009: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C3. No plots were disturbed by wildlife, and none are on creekbank areas that are collapsing or were replaced. Oct 20, 2010: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No plots were disturbed or lost, and none were replaced. Oct 26, 2011: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No plots were disturbed and none were replaced. Oct 14, 2012: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C1, C6, C7. The following plots were repositioned due to nearby creekbank erosion: C12, C13. No plots were lost and none were replaced. Oct 13, 2013: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No plots were disturbed, and none were lost and replaced. Oct 18, 2014: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots were disturbed by wrack: C1, C12, C13, C5. No plots were lost and none were replaced. Oct 24, 2015: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots are on creekbank areas that are collapsing (slumping): C1. No plots were disturbed by wrack or wildlife and none were lost and replaced. i. Climate: Climate summary for Sapelo Island, Georgia, based on NWS data from 1980-2010: Daily-aggregated Values: Mean (sample standard deviation) mean air temperature: 20.09°C (7.28°C) minimum air temperature: 15.02°C (7.96°C) maximum air temperature: 24.82°C (6.98°C) total precipitation: 3.26mm (10.3mm) Yearly-aggregated Daily Values: Mean (sample standard deviation) total precipitation (1980-2010): 1124mm (266mm) 2. Experimental or Sampling Design a. Design Characteristics: This study represents a regular component of the population monitoring program of the GCE-LTER. It was designed to document size distributions of common infaunal and epifaunal mollusc species and track their changes over space and time at each of the ten intertidal, marsh monitoring sites within the GCE-LTER domain. All molluscs within randomly placed, small quadrats at four plots in the mid and creekbank marshes at each of the permanent monitoring sites were collected by hand. This design resulted in four replicate samples per zone (n = 4) at each site (n = 8 or n = 12 per site). Collections were made by different teams of trained individuals (staff and volunteers). Molluscs were returned to the lab, preserved and each individual was measured to the nearest 0.1mm. b. Permanent Plots: Samples were taken within 3 meters of the GCE permanent monitoring plots, which were established in the marsh areas at each GCE sampling site in October, 2000. Each site was divided into two nominal zones -- creek bank and mid-marsh -- and eight plots were randomly located in each zone and marked with stakes. Sites 9 and 10 have a high marsh Juncus zone which was also sampled in the same manner as creek bank and mid-marsh plots. c. Data Collection Duration and Frequency: For each sample, an area of marsh was selected that was similar in gross appearance and near to (within 3 m of) a GCE permanent monitoring plot. The permanent plots were not used so as to avoid damaging the plants within them. Permanent plots 1, 3, 6, and 8 in each zone were chosen to be the anchor plots for selecting actual sample areas. When wrack or other disturbances necessitated the use of alternate plots, these are indicated in the data set and noted as anomalies. Beginning of Observations: Oct 24, 2000 End of Observations: Oct 23, 2020 3. Research Methods a. Field and Laboratory Methods: Method 1: Mollusc Collection -- A quadrat device, constructed of treated, 1" X 3/4" slats, drilled and joined with bolts and wing nuts, was designed to enclose selectable areas of 0.0625, 0.25 or 0.5 m^2. The quadrat size used for each sample may have varied between plots, zones, and sites and was dependent on apparent density of molluscs (particularly Littoraria) in the immediate area. In high density areas, smaller quadrats were used and vice versa. Quadrat selection was guided by the need to balance accuracy of abundance estimates, prevention of excessive removal of fauna and ensurance that field sampling was kept to a reasonable amount of time. The quadrat was placed around the bases of the plants in the selected sampling area. Snails were collected first, from the standing plants. Collection started at the tops of the plants and proceeded downward to the marsh surface. Particular attention was given to enrolled, scenescing leaves, when present, as new recruits and smaller species were often concentrated there. After the plants had been inspected, the marsh surface was examined for snails and signs of infaunal bivalves. After all epifaunal molluscs were removed, the infaunal bivalves were dug from the sediment. This often required feeling (centimeter by centimeter) along the marsh surface and probing down inside crab holes to make sure all individuals were collected. All molluscs were placed in pre-labeled plastic bags and transported back to the lab. The molluscs were washed free of sediment over a sieve (< 500 micron-mesh) and preserved in 70% ethanol. Missing values were recorded on data sheets when observations could not be made due to problems locating plots, loss of plots (creek bank erosion, trampling), logistical problems accessing plots, tidal inundation or other factors. Method 2: Size Determination -- Species were identified to the lowest practicable taxonomic unit and the length of each individual that was measurable was determined to the nearest 0.1mm using (dial or vernier) calipers or an ocular micrometer mounted in a stereomicroscope. The Condition column in the data set indicates that an individual was undamaged (0) or suffered shell damage (1) that may have affected the accuracy of its measurement. Best efforts to measure these specimens accurately were made but, the user may wish to discard these individuals before data analysis. Method 3: Data Integration and Finalization -- Annual data sets from 2000 to 2014 were integrated using the GCE Data Toolbox for MATLAB software. All data records were combined using a metadata-based union approach that automatically aligns columns based on name, data type and units (multimerge.m), then all variable codes, quality-control flag definitions and other data set descriptors were harmonized and redundant definitions (i.e. duplicated due to minor text differences when metadata were merged) were deleted. A Date column was generated from numeric Year, Month and Day columns, then the redundant Month and Day columns were deleted. A text Site_Name column was also added to augment the numeric site code to assist with plot labeling. b. Protocols: Method 1: none Method 2: none Method 3: none c. Instrumentation: Method 1: none Method 2: Calipers Manufacturer: Fisher Scientific (Model: ISO 17025) Parameter: Length (Accuracy: 0.1mm, Readability: Metric, Range: 0.0mm -) Fiber Optic Light Manufacturer: Fostec (Model: DDL) Miniscalse Ruler Manufacturer: Bioquip (Model: Metric) Parameter: Length (Accuracy: 0.1mm, Readability: Metric, Range: 0.0mm -) Stereomicroscope Manufacturer: Leica (Model: MZ 7.5) Method 3: none d. Taxonomy and Systematics: Method 1: Participants were trained to recognize mollusc species in the field. Final species identifications were made when specimens were sorted and measured in the lab. Most species were common and easily recognizable. Useful references for marsh species and molluscs in general are: 1) Heard, R.W. 1982. Guide to Common Tidal Marsh Invertebrates of the Northeastern Gulf of Mexico. Mississippi Alabama Sea Grant Consortium, MASGP-79-004. 82 pp. and 2) Abbott, R.T. 1974. American Seashells. Van Nostrand Reinhold Co., New York, Second Edition. 663 pp. Method 2: not applicable Method 3: not applicable e. Speclies List: f. Permit History: Method 1: Collections were made as a sub-permittee under the general permit granted to the University of Georgia Marine Institute, Sapelo Island, Georgia. Method 2: not applicable Method 3: not applicable 4. Project Personnel a. Personnel: 1: Merryl Alber 2: Steven C. Pennings 3: Thomas Dale Bishop 4: Wade M. Sheldon, Jr. b. Affiliations: 1: University of Georgia, Athens, Georgia 2: University of Houston, Houston, Texas 3: University of Georgia, Athens, Georgia 4: University of Georgia, Athens, Georgia III. Data Set Status and Accessibility A. Status 1. Latest Update: 19-Jul-2022 2. Latest Archive Date: 19-Jul-2022 3. Latest Metadata Update: 19-Jul-2022 4. Data Verification Status: Reviewed by GCE-LTER IM B. Accessibility 1. Storage Location and Medium: Stored at GCE-LTER Data Management Office Dept. of Marine Sciences Univ. of Georgia Athens, GA 30602-3636 USA on media: electronic data download (WWW) or compact disk 2. Contact Person: Name: Adam Sapp Address: Department of Marine Sciences University of Georgia Athens, Georgia 30602 Country: USA Email: asapp@uga.edu 3. Copyright Restrictions: not copyrighted 4. Restrictions: This information is licensed under a Creative Commons Attribution 4.0 International License (see: https://creativecommons.org/licenses/by/4.0/). The consumer of these data ("Data User" herein) has an ethical obligation to cite it appropriately in any publication that results from its use. The Data User should realize that these data may be actively used by others for ongoing research and that coordination may be necessary to prevent duplicate publication. The Data User is urged to contact the authors of these data if any questions about methodology or results occur. Where appropriate, the Data User is encouraged to consider collaboration or co-authorship with the authors. The Data User should realize that misinterpretation of data may occur if used out of context of the original study. While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is." The Data User should be aware, however, that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data. The data authors and the repository where these data were obtained shall not be liable for damages resulting from any use or misinterpretation of the data. a. Release Date: Affiliates: Oct 12, 2016, Public: Oct 12, 2016 b. Citation: Data provided by the Georgia Coastal Ecosystems Long Term Ecological Research Project, supported by funds from NSF OCE 1832178 (data set INV-GCES-1610) c. Disclaimer: The user assumes all responsibility for errors in judgement based on interpretation of data and analyses presented in this data set. 5. Costs: free electronic data download via WWW, distribution on CD may be subject to nominal processing and handling fee IV. Data Structural Descriptors A. Data Set File 1. File Name: INV-GCES-1610_Size_4_0.CSV 2. Size: 44660 records 3. File Format: ASCII text (comma-separated value format) 3a. Delimiters: single comma 4. Header Information: 5 lines of ASCII text 5. Alphanumeric Attributes: 6. Quality Control Flag Codes: E = location estimated based on GPS coordinates of prior or replacement plot(s), I = unspecified 7. Authentication Procedures: not specified 8. Calculations: Species: 9. Processing History: Software version: GCE Data Toolbox Version 3.9.9b (06-Mar-2019) Data structure version: GCE Data Structure 1.1 (29-Mar-2001) Original data files processed: INV-GCEM-0305a2.TXT (1931 records) INV-GCEM-0301b.TXT (2036 records) INV-GCEM-0412b2.TXT (2770 records) INV-GCEM-0502a2.TXT (1303 records) INV-GCEM-0705a2.TXT (1545 records) INV-GCEM-0704a2.TXT (1758 records) INV-GCEM-0705C2.TXT (2180 records) INV-GCEM-0804a2.TXT (2572 records) INV-GCEM-0812a2.TXT (1815 records) INV-GCEM-1010a2.TXT (2690 records) INV-GCEM-1101a2.TXT (2923 records) INV-GCEM-1208a2_revised.TXT (3151 records) INV-GCEM-1309.txt (3181 records) INV-GCEM-1407a.txt (2938 records) INV-GCEM-1507a.txt (2497 records) INV-GCEM-1607a.txt (1440 records) INV-GCEM-1707a.txt (2482 records) INV-GCEM-1807a.txt (1194 records) INV-GCEM-1907a.txt (889 records) INV-GCEM-2007a.txt (1687 records) INV-GCEM-2107a.txt (1679 records) Data processing history: 21-May-2003: new GCE Data Structure 1.1 created ('newstruct') 21-May-2003: 1931 rows imported from ASCII data file 'INV-GCEM-0305a2.TXT' ('imp_ascii') 21-May-2003: 10 metadata fields in file header parsed ('parse_header') 21-May-2003: data structure validated ('gce_valid') 21-May-2003: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 21-May-2003: imported Data, Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 21-May-2003: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 29-Oct-2003: imported Data, Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 29-Oct-2003: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 15-Apr-2005: imported Data, Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 15-Apr-2005: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 08-Nov-2005: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 08-Nov-2005: updated 66 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('imp_gcemetadata') 07-Apr-2009: Q/C flagging criteria of column Species edited ('ui_editor') 07-Apr-2009: Q/C flagging criteria applied for column(s) Species, 'flags' field updated ('dataflag') 07-Apr-2009: edited structure data ('ui_datagrid'): changed 'Species' row 1613 from 'Guekensia' to 'Geukensia', changed 'Species' row 1614 from 'Guekensia' to 'Geukensia', changed 'Species' row 1615 from 'Guekensia' to 'Geukensia', changed 'Species' row 1616 from 'Guekensia' to 'Geukensia', changed 'Species' row 1617 from 'Guekensia' to 'Geukensia', changed 'Species' row 1618 from 'Guekensia' to 'Geukensia', changed 'Species' row 1619 from 'Guekensia' to 'Geukensia', changed 'Species' row 1620 from 'Guekensia' to 'Geukensia', changed 'Species' row 1621 from 'Guekensia' to 'Geukensia', changed 'Species' row 1679 from 'Geukensia?' to 'Geukensia', changed 'Species' row 1680 from 'Geukensia?' to 'Geukensia' 07-Apr-2009: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 15-Nov-2011: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 15-Nov-2011: updated 57 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('imp_gcemetadata') 18-Nov-2011: imported Data, Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 18-Nov-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 18-Nov-2011: added column 'Location' at position 7 ('addcol') 18-Nov-2011: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 18-Nov-2011: 231 values in 'Location' were updated with new values ('update_data') 18-Nov-2011: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 18-Nov-2011: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 18-Nov-2011: 97 values in 'Location' were updated with new values ('update_data'): changed record 3 from 'GCE1_CB16' to 'GCE1_CB26', changed record 15 from 'GCE2_CB13' to 'GCE2_CB23', changed record 17 from 'GCE2_CB18' to 'GCE2_CB28', changed record 698 from 'GCE6_CB13' to 'GCE6_CB23', changed record 699 from 'GCE6_CB13' to 'GCE6_CB23', changed record 700 from 'GCE6_CB13' to 'GCE6_CB23', changed record 916 from 'GCE8_CB11' to 'GCE8_CB21', changed record 918 from 'GCE8_CB16' to 'GCE8_CB26', changed record 919 from 'GCE8_CB18' to 'GCE8_CB28', changed record 928 from 'GCE9_CB13' to 'GCE9_CB23', changed record 929 from 'GCE9_CB13' to 'GCE9_CB23', changed record 930 from 'GCE9_CB13' to 'GCE9_CB23', changed record 931 from 'GCE9_CB13' to 'GCE9_CB23', changed record 932 from 'GCE9_CB13' to 'GCE9_CB23', changed record 933 from 'GCE9_CB13' to 'GCE9_CB23', changed record 934 from 'GCE9_CB13' to 'GCE9_CB23', changed record 935 from 'GCE9_CB13' to 'GCE9_CB23', changed record 936 from 'GCE9_CB13' to 'GCE9_CB23', changed record 937 from 'GCE9_CB13' to 'GCE9_CB23', changed record 938 from 'GCE9_CB13' to 'GCE9_CB23', changed record 939 from 'GCE9_CB13' to 'GCE9_CB23', changed record 940 from 'GCE9_CB13' to 'GCE9_CB23', changed record 1012 from 'GCE1_CB16' to 'GCE1_CB26', changed record 1047 from 'GCE2_CB13' to 'GCE2_CB23', changed record 1063 from 'GCE2_CB18' to 'GCE2_CB28', changed record 1126 from 'GCE6_CB13' to 'GCE6_CB23', changed record 1127 from 'GCE6_CB13' to 'GCE6_CB23', changed record 1128 from 'GCE6_CB13' to 'GCE6_CB23', changed record 1129 from 'GCE6_CB13' to 'GCE6_CB23', changed record 1130 from 'GCE6_CB13' to 'GCE6_CB23', changed record 1131 from 'GCE6_CB13' to 'GCE6_CB23', changed record 1132 from 'GCE6_CB13' to 'GCE6_CB23', changed record 1133 from 'GCE6_CB13' to 'GCE6_CB23', changed record 1134 from 'GCE6_CB13' to 'GCE6_CB23', changed record 1135 from 'GCE6_CB13' to 'GCE6_CB23', changed record 1156 from 'GCE8_CB11' to 'GCE8_CB21', changed record 1157 from 'GCE8_CB11' to 'GCE8_CB21', changed record 1158 from 'GCE8_CB11' to 'GCE8_CB21', changed record 1159 from 'GCE8_CB11' to 'GCE8_CB21', changed record 1160 from 'GCE8_CB11' to 'GCE8_CB21', changed record 1161 from 'GCE8_CB11' to 'GCE8_CB21', changed record 1163 from 'GCE8_CB16' to 'GCE8_CB26', changed record 1164 from 'GCE8_CB18' to 'GCE8_CB28', changed record 1173 from 'GCE9_CB13' to 'GCE9_CB23', changed record 1338 from 'GCE1_CB16' to 'GCE1_CB26', changed record 1345 from 'GCE2_CB13' to 'GCE2_CB23', changed record 1347 from 'GCE2_CB18' to 'GCE2_CB28', changed record 1377 from 'GCE6_CB13' to 'GCE6_CB23', changed record 1400 from 'GCE8_CB11' to 'GCE8_CB21', changed record 1401 from 'GCE8_CB11' to 'GCE8_CB21', changed record 1402 from 'GCE8_CB11' to 'GCE8_CB21', changed record 1403 from 'GCE8_CB11' to 'GCE8_CB21', changed record 1405 from 'GCE8_CB16' to 'GCE8_CB26', changed record 1406 from 'GCE8_CB18' to 'GCE8_CB28', changed record 1412 from 'GCE9_CB13' to 'GCE9_CB23', changed record 1429 from 'GCE1_CB16' to 'GCE1_CB26', changed record 1436 from 'GCE2_CB13' to 'GCE2_CB23', changed record 1438 from 'GCE2_CB18' to 'GCE2_CB28', changed record 1475 from 'GCE6_CB13' to 'GCE6_CB23', changed record 1476 from 'GCE6_CB13' to 'GCE6_CB23', changed record 1477 from 'GCE6_CB13' to 'GCE6_CB23', changed record 1497 from 'GCE8_CB11' to 'GCE8_CB21', changed record 1499 from 'GCE8_CB16' to 'GCE8_CB26', changed record 1500 from 'GCE8_CB18' to 'GCE8_CB28', changed record 1506 from 'GCE9_CB13' to 'GCE9_CB23', changed record 1523 from 'GCE1_CB16' to 'GCE1_CB26', changed record 1530 from 'GCE2_CB13' to 'GCE2_CB23', changed record 1532 from 'GCE2_CB18' to 'GCE2_CB28', changed record 1574 from 'GCE6_CB13' to 'GCE6_CB23', changed record 1589 from 'GCE8_CB11' to 'GCE8_CB21', changed record 1591 from 'GCE8_CB16' to 'GCE8_CB26', changed record 1592 from 'GCE8_CB18' to 'GCE8_CB28', changed record 1598 from 'GCE9_CB13' to 'GCE9_CB23', changed record 1615 from 'GCE1_CB16' to 'GCE1_CB26', changed record 1623 from 'GCE2_CB13' to 'GCE2_CB23', changed record 1625 from 'GCE2_CB18' to 'GCE2_CB28', changed record 1677 from 'GCE6_CB13' to 'GCE6_CB23', changed record 1695 from 'GCE8_CB11' to 'GCE8_CB21', changed record 1697 from 'GCE8_CB16' to 'GCE8_CB26', changed record 1698 from 'GCE8_CB18' to 'GCE8_CB28', changed record 1704 from 'GCE9_CB13' to 'GCE9_CB23', changed record 1742 from 'GCE1_CB16' to 'GCE1_CB26', changed record 1749 from 'GCE2_CB13' to 'GCE2_CB23', changed record 1751 from 'GCE2_CB18' to 'GCE2_CB28', changed record 1783 from 'GCE6_CB13' to 'GCE6_CB23', changed record 1798 from 'GCE8_CB11' to 'GCE8_CB21', changed record 1800 from 'GCE8_CB16' to 'GCE8_CB26', changed record 1801 from 'GCE8_CB18' to 'GCE8_CB28', changed record 1837 from 'GCE9_CB13' to 'GCE9_CB23', changed record 1854 from 'GCE1_CB16' to 'GCE1_CB26', changed record 1861 from 'GCE2_CB13' to 'GCE2_CB23', changed record 1863 from 'GCE2_CB18' to 'GCE2_CB28', changed record 1893 from 'GCE6_CB13' to 'GCE6_CB23', changed record 1908 from 'GCE8_CB11' to 'GCE8_CB21', changed record 1910 from 'GCE8_CB16' to 'GCE8_CB26', changed record 1911 from 'GCE8_CB18' to 'GCE8_CB28', changed record 1917 from 'GCE9_CB13' to 'GCE9_CB23' 18-Nov-2011: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 18-Nov-2011: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 18-Nov-2011: 16 values in 'Location' were updated with new values ('update_data'): changed record 3 from 'GCE1_CB26' to 'GCE1_CB36', changed record 17 from 'GCE2_CB28' to 'GCE2_CB38', changed record 1012 from 'GCE1_CB26' to 'GCE1_CB36', changed record 1063 from 'GCE2_CB28' to 'GCE2_CB38', changed record 1338 from 'GCE1_CB26' to 'GCE1_CB36', changed record 1347 from 'GCE2_CB28' to 'GCE2_CB38', changed record 1429 from 'GCE1_CB26' to 'GCE1_CB36', changed record 1438 from 'GCE2_CB28' to 'GCE2_CB38', changed record 1523 from 'GCE1_CB26' to 'GCE1_CB36', changed record 1532 from 'GCE2_CB28' to 'GCE2_CB38', changed record 1615 from 'GCE1_CB26' to 'GCE1_CB36', changed record 1625 from 'GCE2_CB28' to 'GCE2_CB38', changed record 1742 from 'GCE1_CB26' to 'GCE1_CB36', changed record 1751 from 'GCE2_CB28' to 'GCE2_CB38', changed record 1854 from 'GCE1_CB26' to 'GCE1_CB36', changed record 1863 from 'GCE2_CB28' to 'GCE2_CB38' 18-Nov-2011: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 18-Nov-2011: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 18-Nov-2011: added column 'Location_Notes' at position 8 ('addcol') 18-Nov-2011: manually added 'E' flags to 231 records in column(s) Location, Latitude and Longitude ('addflags') 18-Nov-2011: locked Q/C flag criteria for columns Location, Longitude and Latitude to prevent automatic evaluation ('flag_locks') 18-Nov-2011: updated 2 metadata fields in the Data, Status sections ('add_plant_plots') 18-Nov-2011: added geographic metadata based on matching values in columns Site and Location to site and transect names registered in 'geo_polygons.mat' and location and station names registered in 'geo_locations.mat' ('add_sitemetadata') 18-Nov-2011: updated 9 metadata fields in the Site, Status sections ('add_sitemetadata') 18-Nov-2011: added geographic metadata based on matching values in column Location to location and station names registered in 'geo_locations.mat' ('add_sitemetadata') 18-Nov-2011: updated 9 metadata fields in the Site, Status sections ('add_sitemetadata') 18-Nov-2011: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 18-Nov-2011: updated 57 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('imp_gcemetadata') 18-Nov-2011: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 18-Nov-2011: updated 57 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('imp_gcemetadata') 12-Oct-2016: locked Q/C flag criteria for columns Year, Month, Day, Site, Zone, Plot, Location_Notes, Species, Mollusc_Length and Condition to prevent automatic evaluation ('flag_locks') 12-Oct-2016: 2036 rows added at the bottom of the data set ('datamerge') 12-Oct-2016: updated 27 metadata fields in the Data, Dataset, Site, Status, Study sections ('addmeta') 12-Oct-2016: 2770 rows added at the bottom of the data set ('datamerge') 12-Oct-2016: updated 29 metadata fields in the Data, Dataset, Site, Status, Study sections ('addmeta') 12-Oct-2016: 1303 rows added at the bottom of the data set ('datamerge') 12-Oct-2016: updated 29 metadata fields in the Data, Dataset, Site, Status, Study sections ('addmeta') 12-Oct-2016: 1545 rows added at the bottom of the data set ('datamerge') 12-Oct-2016: updated 30 metadata fields in the Data, Dataset, Site, Status, Study sections ('addmeta') 12-Oct-2016: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 12-Oct-2016: 1758 rows added at the bottom of the data set ('datamerge') 12-Oct-2016: updated 30 metadata fields in the Data, Dataset, Site, Status, Study sections ('addmeta') 12-Oct-2016: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 12-Oct-2016: 2180 rows added at the bottom of the data set ('datamerge') 12-Oct-2016: updated 36 metadata fields in the Data, Dataset, Project, Site, Status, Study sections ('addmeta') 12-Oct-2016: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 12-Oct-2016: 2572 rows added at the bottom of the data set ('datamerge') 12-Oct-2016: updated 36 metadata fields in the Data, Dataset, Project, Site, Status, Study sections ('addmeta') 12-Oct-2016: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 12-Oct-2016: 1815 rows added at the bottom of the data set ('datamerge') 12-Oct-2016: updated 36 metadata fields in the Data, Dataset, Project, Site, Status, Study sections ('addmeta') 12-Oct-2016: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 12-Oct-2016: 2690 rows added at the bottom of the data set ('datamerge') 12-Oct-2016: updated 37 metadata fields in the Data, Dataset, Project, Site, Status, Study sections ('addmeta') 12-Oct-2016: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 12-Oct-2016: 2923 rows added at the bottom of the data set ('datamerge') 12-Oct-2016: updated 40 metadata fields in the Data, Dataset, Project, Site, Status, Study sections ('addmeta') 12-Oct-2016: 3151 rows added at the bottom of the data set ('datamerge') 12-Oct-2016: updated 41 metadata fields in the Data, Dataset, Project, Site, Status, Study sections ('addmeta') 12-Oct-2016: 3181 rows added at the bottom of the data set ('datamerge') 12-Oct-2016: updated 47 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 12-Oct-2016: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 12-Oct-2016: 2938 rows added at the bottom of the data set ('datamerge') 12-Oct-2016: updated 43 metadata fields in the Data, Dataset, Project, Site, Status, Study sections ('addmeta') 12-Oct-2016: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 12-Oct-2016: 2497 rows added at the bottom of the data set ('datamerge') 12-Oct-2016: updated 46 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 12-Oct-2016: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 12-Oct-2016: updated title ('newtitle') 12-Oct-2016: updated 1 metadata fields in the Dataset sections ('addmeta') 12-Oct-2016: Units of column Month changed from 'MM' to 'M'; Units of column Day changed from 'DD' to 'D ('ui_editor') 12-Oct-2016: replaced 21176 NaN/empty values in column Month with values from column Month ('coalesce_cols') 12-Oct-2016: 21176 values in 'Month' were updated with new values ('update_data') 12-Oct-2016: Q/C flagging criteria applied for column(s) Month, 'flags' field updated ('dataflag') 12-Oct-2016: deleted column Month from the structure ('deletecols') 12-Oct-2016: replaced 21176 NaN/empty values in column Day with values from column Day ('coalesce_cols') 12-Oct-2016: 21176 values in 'Day' were updated with new values ('update_data') 12-Oct-2016: Q/C flagging criteria applied for column(s) Day, 'flags' field updated ('dataflag') 12-Oct-2016: deleted column Day from the structure ('deletecols') 12-Oct-2016: Q/C Criteria of column Year changed from 'x<2000='Q';x>2000='Q';manual' to 'x<2000='Q';x>2000='Q''; Q/C Criteria of column Month changed from 'x<1='I';x<10='Q';x>10='Q';x>12='I';manual' to 'x<1='I';x<10='Q';x>10='Q';x>12='I''; Q/C Criteria of column Day changed from 'x<1='I';x>31='I';manual' to 'x<1='I';x>31='I''; Q/C Criteria of column Site changed from 'x<1='I';x>10='Q';manual' to 'x<1='I';x>10='Q''; Q/C Criteria of column Zone changed from 'x<1='I';x>2='I';manual' to 'x<1='I';x>2='I''; Q/C Criteria of column Plot changed from 'x<1='I';x>8='I';manual' to 'x<1='I';x>8='I''; Q/C Criteria of column Species changed from 'flag_notinlist(x,'Crassostrea,Detracia,Geukensia,Hydrobiidae,Ilyanassa,Littoraria,Me lampus,Polymesoda')='Q';manual' to 'flag_notinlist(x,'Crassostrea,Detracia,Geukensia,Hydrobiidae,Ilyanassa,Littoraria,Me lampus,Polymesoda')='Q''; Q/C Criteria of column Mollusc_Length changed from 'x<0.1='I';x>106.8='Q';manual' to 'x<0.1='I';x>106.8='Q''; Q/C Criteria of column Condition changed from 'x<0='I';x>1='I';manual' to 'x<0='I';x>1='I''; Q/C Criteria of column Notes changed from 'manual' to ' ('ui_editor') 12-Oct-2016: Q/C flagging criteria applied for column(s) Year, Month, Day, Site, Zone, Plot, Species, Mollusc_Length, Condition and Notes, 'flags' field updated ('dataflag') 12-Oct-2016: calculated calendar date in YYYY-MM-DD format from individual date component columns Year, Month and Day, added 'Date' column at position 1 ('add_datecol') 12-Oct-2016: manually edited data set metadata ('ui_editmetadata') 12-Oct-2016: Description of column Date edited; Q/C Criteria of column Year changed from 'x<2000='Q';x>2000='Q'' to 'x<2000='Q''; Q/C Criteria of column Zone changed from 'x<1='I';x>2='I'' to 'x<1='I';x>3='I''; Q/C Criteria of column Plot changed from 'x<1='I';x>8='I'' to 'x<1='I';x>99='I''; Q/C Criteria of column Species changed from 'flag_notinlist(x,'Crassostrea,Detracia,Geukensia,Hydrobiidae,Ilyanassa,Littoraria,Me lampus,Polymesoda')='Q'' to '';deleted columns Month and Day from data structure ('ui_editor') 12-Oct-2016: Q/C flagging criteria applied for column(s) Year, Zone, Plot and Species, 'flags' field updated ('dataflag') 12-Oct-2016: added or updated Q/C criteria for checking coded values against the code list in the metadata for column(s) Species ('codes2criteria') 12-Oct-2016: Q/C flagging criteria applied for column(s) Species, 'flags' field updated ('dataflag') 12-Oct-2016: Q/C Criteria of column Mollusc_Length changed from 'x<0.1='I';x>106.8='Q'' to 'x<0.1='I';x>120='Q' ('ui_editor') 12-Oct-2016: Q/C flagging criteria applied for column(s) Mollusc_Length, 'flags' field updated ('dataflag') 12-Oct-2016: updated 1 metadata fields in the Dataset sections ('addmeta') 12-Oct-2016: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 12-Oct-2016: updated 57 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 12-Oct-2016: manually edited data set metadata ('ui_editmetadata') 12-Oct-2016: edited data set title in structure and metadata ('ui_editor') 12-Oct-2016: replaced values of 'Geukensia' in column(s) Species with 'Geukensia', performing a full case-sensitive match ('string_replace') 12-Oct-2016: manually edited data set metadata ('ui_editmetadata') 12-Oct-2016: replaced values of 'Guekensia' in column(s) Species with 'Geukensia', performing a full case-sensitive match ('string_replace') 12-Oct-2016: 92 values in 'Species' were updated with new values ('update_data'): changed record 32530 from 'Guekensia' to 'Geukensia', changed record 32531 from 'Guekensia' to 'Geukensia', changed record 32532 from 'Guekensia' to 'Geukensia', changed record 32533 from 'Guekensia' to 'Geukensia', changed record 32534 from 'Guekensia' to 'Geukensia', changed record 32535 from 'Guekensia' to 'Geukensia', changed record 32536 from 'Guekensia' to 'Geukensia', changed record 32575 from 'Guekensia' to 'Geukensia', changed record 32576 from 'Guekensia' to 'Geukensia', changed record 32577 from 'Guekensia' to 'Geukensia', changed record 32578 from 'Guekensia' to 'Geukensia', changed record 32579 from 'Guekensia' to 'Geukensia', changed record 32580 from 'Guekensia' to 'Geukensia', changed record 32581 from 'Guekensia' to 'Geukensia', changed record 32582 from 'Guekensia' to 'Geukensia', changed record 32583 from 'Guekensia' to 'Geukensia', changed record 32584 from 'Guekensia' to 'Geukensia', changed record 32585 from 'Guekensia' to 'Geukensia', changed record 32586 from 'Guekensia' to 'Geukensia', changed record 32587 from 'Guekensia' to 'Geukensia', changed record 32588 from 'Guekensia' to 'Geukensia', changed record 32617 from 'Guekensia' to 'Geukensia', changed record 32618 from 'Guekensia' to 'Geukensia', changed record 32619 from 'Guekensia' to 'Geukensia', changed record 32620 from 'Guekensia' to 'Geukensia', changed record 32621 from 'Guekensia' to 'Geukensia', changed record 32622 from 'Guekensia' to 'Geukensia', changed record 32623 from 'Guekensia' to 'Geukensia', changed record 32624 from 'Guekensia' to 'Geukensia', changed record 32625 from 'Guekensia' to 'Geukensia', changed record 32626 from 'Guekensia' to 'Geukensia', changed record 32627 from 'Guekensia' to 'Geukensia', changed record 32628 from 'Guekensia' to 'Geukensia', changed record 32629 from 'Guekensia' to 'Geukensia', changed record 32630 from 'Guekensia' to 'Geukensia', changed record 32631 from 'Guekensia' to 'Geukensia', changed record 32632 from 'Guekensia' to 'Geukensia', changed record 32633 from 'Guekensia' to 'Geukensia', changed record 32634 from 'Guekensia' to 'Geukensia', changed record 32635 from 'Guekensia' to 'Geukensia', changed record 32636 from 'Guekensia' to 'Geukensia', changed record 32637 from 'Guekensia' to 'Geukensia', changed record 32638 from 'Guekensia' to 'Geukensia', changed record 32639 from 'Guekensia' to 'Geukensia', changed record 32640 from 'Guekensia' to 'Geukensia', changed record 32641 from 'Guekensia' to 'Geukensia', changed record 32642 from 'Guekensia' to 'Geukensia', changed record 32643 from 'Guekensia' to 'Geukensia', changed record 32644 from 'Guekensia' to 'Geukensia', changed record 32645 from 'Guekensia' to 'Geukensia', changed record 32646 from 'Guekensia' to 'Geukensia', changed record 32647 from 'Guekensia' to 'Geukensia', changed record 32648 from 'Guekensia' to 'Geukensia', changed record 32649 from 'Guekensia' to 'Geukensia', changed record 32650 from 'Guekensia' to 'Geukensia', changed record 32651 from 'Guekensia' to 'Geukensia', changed record 32652 from 'Guekensia' to 'Geukensia', changed record 32653 from 'Guekensia' to 'Geukensia', changed record 32654 from 'Guekensia' to 'Geukensia', changed record 32655 from 'Guekensia' to 'Geukensia', changed record 32656 from 'Guekensia' to 'Geukensia', changed record 32657 from 'Guekensia' to 'Geukensia', changed record 32658 from 'Guekensia' to 'Geukensia', changed record 32659 from 'Guekensia' to 'Geukensia', changed record 32660 from 'Guekensia' to 'Geukensia', changed record 32661 from 'Guekensia' to 'Geukensia', changed record 32662 from 'Guekensia' to 'Geukensia', changed record 32663 from 'Guekensia' to 'Geukensia', changed record 32664 from 'Guekensia' to 'Geukensia', changed record 32665 from 'Guekensia' to 'Geukensia', changed record 32666 from 'Guekensia' to 'Geukensia', changed record 32667 from 'Guekensia' to 'Geukensia', changed record 32668 from 'Guekensia' to 'Geukensia', changed record 32669 from 'Guekensia' to 'Geukensia', changed record 32670 from 'Guekensia' to 'Geukensia', changed record 32671 from 'Guekensia' to 'Geukensia', changed record 32672 from 'Guekensia' to 'Geukensia', changed record 32676 from 'Guekensia' to 'Geukensia', changed record 32677 from 'Guekensia' to 'Geukensia', changed record 32678 from 'Guekensia' to 'Geukensia', changed record 32679 from 'Guekensia' to 'Geukensia', changed record 32680 from 'Guekensia' to 'Geukensia', changed record 32681 from 'Guekensia' to 'Geukensia', changed record 32682 from 'Guekensia' to 'Geukensia', changed record 32683 from 'Guekensia' to 'Geukensia', changed record 32684 from 'Guekensia' to 'Geukensia', changed record 32685 from 'Guekensia' to 'Geukensia', changed record 32686 from 'Guekensia' to 'Geukensia', changed record 32687 from 'Guekensia' to 'Geukensia', changed record 32688 from 'Guekensia' to 'Geukensia', changed record 32689 from 'Guekensia' to 'Geukensia', changed record 32690 from 'Guekensia' to 'Geukensia' 12-Oct-2016: Q/C flagging criteria applied for column(s) Species, 'flags' field updated ('dataflag') 12-Oct-2016: added column 'Site_Name' at position 4 ('addcol') 12-Oct-2016: copied/reordered columns Date, Year, Site_Name, Site, Zone, Plot, Location, Location_Notes, Longitude, Latitude, Species, Mollusc_Length, Condition and Notes ('copycols') 12-Oct-2016: sorted by columns Year(ascending), Site(ascending), Zone(ascending), Plot(ascending) ('sortdata') 12-Oct-2016: updated 1 metadata fields in the Dataset sections ('addmeta') 12-Oct-2016: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 12-Oct-2016: updated 57 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 12-Oct-2016: manually edited data set metadata ('ui_editmetadata') 12-Oct-2016: edited data set title in structure and metadata ('ui_editor') 14-Oct-2016: updated 1 metadata fields in the Dataset sections ('addmeta') 14-Oct-2016: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 14-Oct-2016: updated 57 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 14-Oct-2016: manually edited data set metadata ('ui_editmetadata') 14-Oct-2016: edited data set title in structure and metadata ('ui_editor') 30-Oct-2016: updated 1 metadata fields in the Dataset sections ('addmeta') 30-Oct-2016: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 30-Oct-2016: updated 57 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 30-Oct-2016: manually edited data set metadata ('ui_editmetadata') 30-Oct-2016: edited data set title in structure and metadata ('ui_editor') 10-May-2021: 1440 rows added at the bottom of the data set from 'Mollusc population size distribution monitoring: Fall 2015 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh monitoring sites 1-10' ('datamerge') 10-May-2021: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-May-2021: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-May-2021: 2482 rows added at the bottom of the data set from 'Mollusc population size distribution monitoring: Fall 2016 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh monitoring sites 1-10' ('datamerge') 10-May-2021: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-May-2021: 1194 rows added at the bottom of the data set from 'Mollusc population size distribution monitoring: Fall 2016 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh monitoring sites 1-10' ('datamerge') 10-May-2021: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-May-2021: 889 rows added at the bottom of the data set from 'Mollusc population size distribution monitoring: Fall 2018 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh monitoring sites 1-10' ('datamerge') 10-May-2021: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-May-2021: 1687 rows added at the bottom of the data set from 'Mollusc population size distribution monitoring: Fall 2019 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh monitoring sites 1-10' ('datamerge') 10-May-2021: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-May-2021: deleted columns Month, Day, Notes, Month and Day from data structure ('ui_editor') 10-May-2021: edited structure data ('ui_datagrid'): changed 'Plot' row 26960 from 48 to 8, changed 'Plot' row 26961 from 48 to 8 10-May-2021: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-May-2021: concatentated values from columns Site and Zone, separating values by '_', to generate text column Site_Zone ('concat_cols') 10-May-2021: deleted columns Location, Location_Notes, Longitude and Latitude from data structure ('ui_editor') 10-May-2021: added column 'Location' at position 8 ('addcol') 10-May-2021: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 10-May-2021: 3396 values in 'Location' were updated with new values ('update_data') 10-May-2021: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 10-May-2021: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 10-May-2021: 2377 values in 'Location' were updated with new values ('update_data') 10-May-2021: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 10-May-2021: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 10-May-2021: 1931 values in 'Location' were updated with new values ('update_data') 10-May-2021: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 10-May-2021: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 10-May-2021: 1793 values in 'Location' were updated with new values ('update_data') 10-May-2021: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 10-May-2021: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 10-May-2021: 1793 values in 'Location' were updated with new values ('update_data') 10-May-2021: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 10-May-2021: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 10-May-2021: 1793 values in 'Location' were updated with new values ('update_data') 10-May-2021: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 10-May-2021: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 10-May-2021: 1793 values in 'Location' were updated with new values ('update_data') 10-May-2021: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 10-May-2021: 1793 values in 'Location' were updated with new values ('update_data') 10-May-2021: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 10-May-2021: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 10-May-2021: 421 values in 'Location' were updated with new values ('update_data') 10-May-2021: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 10-May-2021: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 10-May-2021: 114 values in 'Location' were updated with new values ('update_data') 10-May-2021: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 10-May-2021: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 10-May-2021: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 10-May-2021: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 10-May-2021: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 10-May-2021: added column 'Location_Notes' at position 9 ('addcol') 10-May-2021: manually added 'E' flags to 3396 records in column(s) Location, Latitude and Longitude ('addflags') 10-May-2021: locked Q/C flag criteria for columns Location, Longitude and Latitude to prevent automatic evaluation ('flag_locks') 10-May-2021: updated 1 metadata fields in the Data sections ('addmeta') 10-May-2021: added geographic metadata based on matching values in columns Site and Location to site and transect names registered in 'geo_polygons.mat' and location and station names registered in 'geo_locations.mat' ('add_sitemetadata') 10-May-2021: updated 8 metadata fields in the Site sections ('addmeta') 10-May-2021: deleted column Site_Zone from data structure ('ui_editor') 10-May-2021: updated 1 metadata fields in the Dataset sections ('addmeta') 10-May-2021: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 10-May-2021: updated 57 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-May-2021: Description of column Zone edited; Units of column Site changed from 'None' to 'none'; Units of column Zone changed from 'None' to 'none'; Units of column Plot changed from 'None' to 'none'; Units of column Species changed from 'None' to 'none'; Units of column Condition changed from 'None' to 'none ('ui_editor') 10-May-2021: updated 1 metadata fields in the Dataset sections ('addmeta') 10-May-2021: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 10-May-2021: updated 57 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 13-May-2021: edited structure data ('ui_datagrid'): deleted record(s) 37813 13-May-2021: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 19-Jul-2022: manually edited data set metadata ('ui_editmetadata') 19-Jul-2022: replaced values of 'Dectracia' in column(s) Species with 'Detracia', performing a full case-sensitive match ('string_replace') 19-Jul-2022: 10 values in 'Species' were updated with new values ('update_data'): changed record 35291 from 'Dectracia' to 'Detracia', changed record 35292 from 'Dectracia' to 'Detracia', changed record 35293 from 'Dectracia' to 'Detracia', changed record 35294 from 'Dectracia' to 'Detracia', changed record 35295 from 'Dectracia' to 'Detracia', changed record 35296 from 'Dectracia' to 'Detracia', changed record 35297 from 'Dectracia' to 'Detracia', changed record 35298 from 'Dectracia' to 'Detracia', changed record 35299 from 'Dectracia' to 'Detracia', changed record 35300 from 'Dectracia' to 'Detracia' 19-Jul-2022: Q/C flagging criteria applied for column(s) Species, 'flags' field updated ('dataflag') 19-Jul-2022: replaced values of 'Geukensia ' in column(s) Species with 'Geukensia', performing a full case-sensitive match ('string_replace') 19-Jul-2022: 190 values in 'Species' were updated with new values ('update_data') 19-Jul-2022: Q/C flagging criteria applied for column(s) Species, 'flags' field updated ('dataflag') 19-Jul-2022: replaced values of 'Illynasa' in column(s) Species with 'Ilyanassa', performing a full case-sensitive match ('string_replace') 19-Jul-2022: 14 values in 'Species' were updated with new values ('update_data'): changed record 35301 from 'Illynasa' to 'Ilyanassa', changed record 35302 from 'Illynasa' to 'Ilyanassa', changed record 35303 from 'Illynasa' to 'Ilyanassa', changed record 35304 from 'Illynasa' to 'Ilyanassa', changed record 35305 from 'Illynasa' to 'Ilyanassa', changed record 35306 from 'Illynasa' to 'Ilyanassa', changed record 35307 from 'Illynasa' to 'Ilyanassa', changed record 35308 from 'Illynasa' to 'Ilyanassa', changed record 35309 from 'Illynasa' to 'Ilyanassa', changed record 35310 from 'Illynasa' to 'Ilyanassa', changed record 35311 from 'Illynasa' to 'Ilyanassa', changed record 35312 from 'Illynasa' to 'Ilyanassa', changed record 35313 from 'Illynasa' to 'Ilyanassa', changed record 35314 from 'Illynasa' to 'Ilyanassa' 19-Jul-2022: Q/C flagging criteria applied for column(s) Species, 'flags' field updated ('dataflag') 19-Jul-2022: replaced values of 'Littoraria ' in column(s) Species with 'Littoraria', performing a full case-sensitive match ('string_replace') 19-Jul-2022: 963 values in 'Species' were updated with new values ('update_data') 19-Jul-2022: Q/C flagging criteria applied for column(s) Species, 'flags' field updated ('dataflag') 19-Jul-2022: replaced values of 'Melampus ' in column(s) Species with 'Melampus', performing a full case-sensitive match ('string_replace') 19-Jul-2022: 13 values in 'Species' were updated with new values ('update_data'): changed record 39417 from 'Melampus ' to 'Melampus', changed record 39418 from 'Melampus ' to 'Melampus', changed record 39419 from 'Melampus ' to 'Melampus', changed record 39420 from 'Melampus ' to 'Melampus', changed record 39421 from 'Melampus ' to 'Melampus', changed record 39422 from 'Melampus ' to 'Melampus', changed record 39423 from 'Melampus ' to 'Melampus', changed record 40112 from 'Melampus ' to 'Melampus', changed record 40113 from 'Melampus ' to 'Melampus', changed record 40114 from 'Melampus ' to 'Melampus', changed record 40115 from 'Melampus ' to 'Melampus', changed record 40116 from 'Melampus ' to 'Melampus', changed record 40117 from 'Melampus ' to 'Melampus' 19-Jul-2022: Q/C flagging criteria applied for column(s) Species, 'flags' field updated ('dataflag') 19-Jul-2022: manually edited data set metadata ('ui_editmetadata') 19-Jul-2022: Q/C Criteria of column Species changed from 'flag_notinlist(x,'Assiminea,Crassostrea,Detracia,Geukensia,Hydrobiidae,Ilyanassa,Lit toraria,Melampus,Polymesoda,Slug,Succineidae')='I'' to 'flag_notinlist(x,'Assiminea,Crassostrea,Detracia,Geukensia,Hydrobiidae,Ilyanassa,Lit toraria,Melampus,Odostomia,Polymesoda,Slug,Succineidae')='I' ('ui_editor') 19-Jul-2022: Q/C flagging criteria applied for column(s) Species, 'flags' field updated ('dataflag') 19-Jul-2022: 1679 rows added at the bottom of the data set from 'Mollusc population size distribution monitoring: Fall 2020 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh monitoring sites 1-10' ('datamerge') 19-Jul-2022: updated 38 metadata fields in the Data, Dataset, Site, Status, Study, Supplement sections ('addmeta') 19-Jul-2022: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 19-Jul-2022: updated 1 metadata fields in the Dataset sections ('addmeta') 19-Jul-2022: updated 1 metadata fields in the Dataset sections ('addmeta') 19-Jul-2022: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 19-Jul-2022: updated 57 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 19-Jul-2022: Variable Type of column Site_Name changed from 'nominal' to 'text ('ui_editor') 19-Jul-2022: flags for columns Location, Longitude, Latitude, Species and Mollusc_Length converted to data columns, flag codes updated in metadata ('flags2cols') 19-Jul-2022: updated 6 metadata fields in the Data sections ('addmeta') 19-Jul-2022: updated 15 metadata fields in the Status, Data sections to reflect attribute metadata ('updatecols') 19-Jul-2022: parsed and formatted metadata ('listmeta') B. Variable Information 1. Variable Name: column 1. Date column 2. Year column 3. Site_Name column 4. Site column 5. Zone column 6. Plot column 7. Location column 8. Flag_Location column 9. Location_Notes column 10. Longitude column 11. Flag_Longitude column 12. Latitude column 13. Flag_Latitude column 14. Species column 15. Flag_Species column 16. Mollusc_Length column 17. Flag_Mollusc_Length column 18. Condition column 19. Notes 2. Variable Definition: column 1. Calendar date of observation column 2. Calendar year of observation column 3. GCE LTER sampling site name column 4. GCE-LTER sampling site number column 5. Marsh zone code (1=Creekbank, 2=Mid-marsh, 3=High-marsh Juncus) column 6. GCE-LTER permanent plot number column 7. Geographic location code in the GCE Metadata Database for the sampling plot column 8. QA/QC flags for Geographic location code in the GCE Metadata Database for the sampling plot (flagging criteria, where "x" is Location: manual) column 9. Notes on location assignments and geographic accuracy column 10. Geographic longitude in decimal degrees column 11. QA/QC flags for Geographic longitude in decimal degrees (flagging criteria, where "x" is Longitude: x<-180="I", x>180="I", manual) column 12. Geographic latitude in decimal degrees column 13. QA/QC flags for Geographic latitude in decimal degrees (flagging criteria, where "x" is Latitude: x<-90="I", x>90="I", manual) column 14. Latinized name of the mollusc species collected column 15. QA/QC flags for Latinized name of the mollusc species collected (flagging criteria, where "x" is Species: flag_notinlist(x,"Assiminea,Crassostrea,Detracia,Geukensia,Hydrobiidae,Ilyanassa,Littora ria,Melampus,Odostomia,Polymesoda,Slug,Succineidae")="I") column 16. Length of measurable individuals collected from each plot column 17. QA/QC flags for Length of measurable individuals collected from each plot (flagging criteria, where "x" is Mollusc_Length: x<0.1="I", x>120="Q") column 18. Binary code to indicate shell condition of the individual specimen (0=Undamaged, 1=Damaged) column 19. Field sampling notes 3. Units of Measurement: column 1. YYYY-MM-DD column 2. YYYY column 3. none column 4. none column 5. none column 6. none column 7. none column 8. none column 9. none column 10. degrees column 11. none column 12. degrees column 13. none column 14. none column 15. none column 16. mm column 17. none column 18. none column 19. none 4. Data Type a. Storage Type: column 1. string column 2. integer column 3. string column 4. integer column 5. integer column 6. integer column 7. string column 8. string column 9. string column 10. floating-point column 11. string column 12. floating-point column 13. string column 14. string column 15. string column 16. floating-point column 17. string column 18. integer column 19. string b. Variable Codes: Condition: 0 = Undamaged, 1 = Damaged, 1 = damaged Site: 1 = GCE1 (Eulonia), 10 = GCE10 (Hunt Camp), 10 = GCE10 (Hunt Camp), 2 = GCE2 (Four Mile Island), 3 = GCE3 (North Sapelo), 4 = GCE4 (Meridian), 4 = GCE4 (Meridian), 5 = GCE5 (Folly River), 6 = GCE6 (Dean Creek), 7 = GCE7 (Carrs Island), 7 = GCE7 (Carrs Island), 8 = GCE8 (Alligator Creek), 9 = GCE9 (Rockdedundy Island) Species: Assiminea = Assiminea succinea, Crassostrea = Crassostrea virginica, Detracia = Detracia floridana, Geukensia = Geukensia demissa, Hydrobiidae = undifferentiated Hydrobiidae species, Hydrobiidae = unidentified hydrobiid snail, Ilyanassa = Ilyanassa obsoleta, Ilyanassa = Ilyanassa obsoleta, Littoraria = Littoraria irrorata, Melampus = Melampus bidentatus, Odostomia = unidentified odostomia snails, Polymesoda = Polymesoda caroliniana, Slug = unidentified slug species, Succineidae = undifferentiated Succinea species, Succineidae = unidentified succineid (amber) snails Zone: 1 = Creekbank zone, 2 = Mid-marsh zone, 3 = High-marsh Juncus zone, 3 = additional Juncus zone in high marsh Flag_Location: E = location estimated based on GPS coordinates of prior or replacement plot(s) Flag_Longitude: E = location estimated based on GPS coordinates of prior or replacement plot(s) Flag_Latitude: E = location estimated based on GPS coordinates of prior or replacement plot(s) Flag_Species: I = unspecified Flag_Mollusc_Length: Q = unspecified c. Numeric Range: column 1. (none) column 2. 2000 to 2020 column 3. (none) column 4. 1 to 10 column 5. 1 to 3 column 6. 1 to 58 column 7. (none) column 8. (none) column 9. (none) column 10. -81.4787 to -81.229 column 11. (none) column 12. 31.3075 to 31.5395 column 13. (none) column 14. (none) column 15. (none) column 16. 0.1 to 123 column 17. (none) column 18. 0 to 1 column 19. (none) d. Missing Value Code: 5. Data Format a. Column Type: column 1. text column 2. numerical column 3. text column 4. numerical column 5. numerical column 6. numerical column 7. text column 8. text column 9. text column 10. numerical column 11. text column 12. numerical column 13. text column 14. text column 15. text column 16. numerical column 17. text column 18. numerical column 19. text b. Number of Columns: 19 c. Decimal Places: column 1. 0 column 2. 0 column 3. 0 column 4. 0 column 5. 0 column 6. 0 column 7. 0 column 8. 0 column 9. 0 column 10. 6 column 11. 0 column 12. 6 column 13. 0 column 14. 0 column 15. 0 column 16. 1 column 17. 0 column 18. 0 column 19. 0 6. Logical Variable Type: column 1. datetime (none) column 2. datetime (discrete) column 3. free text (none) column 4. coded value (discrete) column 5. coded value (discrete) column 6. nominal (discrete) column 7. nominal (none) column 8. coded value (none) column 9. free text (none) column 10. geographic coordinate (continuous) column 11. coded value (none) column 12. geographic coordinate (continuous) column 13. coded value (none) column 14. coded value (none) column 15. coded value (none) column 16. data (continuous) column 17. coded value (none) column 18. coded value (discrete) column 19. free text (none) 7. Flagging Criteria: column 1. none column 2. x<2000="Q" column 3. none column 4. x<1="I";x>10="Q" column 5. x<1="I";x>3="I" column 6. x<1="I";x>99="I" column 7. manually-assigned flags column 8. none column 9. none column 10. x<-180="I";x>180="I";manually-assigned flags column 11. none column 12. x<-90="I";x>90="I";manually-assigned flags column 13. none column 14. flag_notinlist(x,"Assiminea,Crassostrea,Detracia,Geukensia,Hydrobiidae,Ilyanassa,Littora ria,Melampus,Odostomia,Polymesoda,Slug,Succineidae")="I" column 15. none column 16. x<0.1="I";x>120="Q" column 17. none column 18. x<0="I";x>1="I" column 19. none C. Data Anomalies: Midmarsh GCE Site 8 Plot 1 was heavily trampled due to an animal trail through permanent plot. INV-GCEM-1208a2_3_0: Midmarsh GCE Site 8 Plot 1 was heavily trampled due to an animal trail through permanent plot. Note that the data set was also revised since initial release to include measurements from additional Melampus specimens for Site = 7, Zone = 2. INV-GCEM-1309_2_0: Midmarsh GCE Site 8 Plot 6 and 8 were heavily trampled by pigs. Sample quadrat was placed adjacent to plots in an undisturbed area. V. Supplemental Descriptors A. Data Acquisition 1. Data Forms: Paper log sheets in the field, excel spreadsheets 2. Form Location: GCE LTER Office, UGA Marine Institute, Sapelo Island GA, 31327 3. Data Entry Validation: Excel data spreadsheets were printed and cross-checked with bench sheets and field book records by K. Anstead. A sub-set of the density estimates, calculated by the Excel spreadsheet, were confirmed on a hand held calculator by K. Anstead. INV-GCEM-1507a_1_0: Excel data spreadsheets cross-checked with bench sheets and field book records by C. Reddy. INV-GCEM-2107a: Excel data spreadsheets cross-checked with bench sheets and field book records by C. Reddy. B. Quality Assurance/Quality Control Procedures: C. Supplemental Materials: All molluscs were placed in pre-labeled plastic bags and transported back to the lab. The molluscs were washed free of sediment over a sieve (< 500 micron-mesh), fixed with ethanol and ultimately transferred to and preserved in 70-95% ethanol. D. Computer Programs: Microsoft Excel 2003 SP3 INV-GCEM-1507a_1_0: Microsoft Excel 2010 INV-GCEM-2107a: Microsoft Excel 2010 E. Archival Practices: F. Publications: not specified G. History of Data Set Usage 1. Data Request History: not specified 2. Data Set Update History: Jul 19, 2022: added fall 2020 abundance and size data 3. Review History: none 4. Questions and Comments from Users: none