I. Data Set Descriptors A. Title: Steven C. Pennings. 2013. Mollusc population size distribution monitoring: Fall 2013 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh monitoring sites 1-10. Georgia Coastal Ecosystems LTER Data Catalog (data set INV-GCEM-1407a; http://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?accession=INV-GCEM-1407a) B. Accession Number: INV-GCEM-1407a C. Description 1. Originator(s): Name: Steven C. Pennings Address: Department of Biology and Biochemistry University of Houston Houston, Texas 77204-5513 Country: USA Email: scpennin@central.uh.edu 2. Abstract: This data set is the Fall 2013 report of infaunal and epifaunal mollusk species size distributions at the GCE-LTER marsh sites used for population monitoring. Infaunal and epifaunal molluscs were hand-collected from within quadrats of known area from mid-marsh and creekbank zones (n = 4 quadrats per zone) at all sites. The molluscs were returned to the lab, preserved in ethanol, measured and counted (count data is reported separately). Length of each measurable individual was determined using calipers or an ocular micrometer mounted in a stereomicroscope. Species abundance and density data for these collections may be found in the GCE-LTER data set INV-GCEM-1407. Numbers of individuals of each species in the abundance data file may not correspond exactly to the numbers of individuals in the size data file because some individuals may not have been measureable. 3. Study Type: Monitoring 4. Study Themes: Aquatic Invertebrate Ecology 5. LTER Core Areas: Populations 6. Georeferences: none 7. Submission Date: Nov 01, 2013 D. Keywords: creek bank, Detracia, epifauna, fall, GCE, Georgia, Georgia Coastal Ecosystems, Geukensia, Hydrobiidae, infauna, intertidal, length, Littoraria, LTER, marshes, Melampus, mid-marsh, mollusks, monitoring, Polymesoda, Populations, Sapelo Island, size distribution, species diversity, Succineidae, USA, vegetation II. Research Origin Descriptors A. Overall Project Description 1. Project Title: Georgia Coastal Ecosystems LTER Project III 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: Nov 01, 2012 to Nov 01, 2018 4. Objectives: The research proposed for GCE-III is designed to address how variations in salinity and inundation, driven by climate change and anthropogenic factors, affect biotic and ecosystem responses at different spatial and temporal scales, and to predict the consequences of these changes for habitat provisioning and carbon (C) sequestration across the coastal landscape. 5. Abstract: The Georgia Coastal Ecosystems (GCE) LTER is located along three adjacent sounds on the Atlantic coast and includes both intertidal marshes and estuaries. Long-term drivers of climate change, sea level rise and human alterations of the landscape will cause transitions in dominant habitat types (state changes) within the GCE domain by changing the amounts and patterns of water delivery across the landscape. These changes in water delivery can be conceptualized as presses and pulses in river inflow, local runoff, groundwater input, and tidal inundation, which will in turn manifest themselves as changes in salinity and inundation patterns in the domain. The research proposed for GCE-III is designed to address how variations in salinity and inundation, driven by climate change and anthropogenic factors, affect biotic and ecosystem responses at different spatial and temporal scales, and to predict the consequences of these changes for habitat provisioning and carbon (C) sequestration across the coastal landscape. The goals are to: 1) Track long-term changes in climate and human actions in the watershed and adjacent uplands, and evaluate the effects of these drivers on domain boundary conditions. 2) Describe temporal and spatial variability in physical, chemical, geological and biological, and to evaluate how they are affected by variations in river inflow and other boundary conditions. 3) Characterize the responses of three dominant habitats in the domain to pulses and presses in salinity and inundation. 4) Describe patterns of habitat provisioning and C sequestration and export in the GCE domain, and to evaluate how these might be affected by changes in salinity and inundation. These efforts will be synthesized into a synoptic understanding of both biotic and ecosystem responses to variations in salinity and inundation driven by climate change and human activities, which will be used to assess thresholds between habitats and the potential for state changes in the domain. 6. Funding Source: NSF OCE 1237140 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_CB28 -- GCE1 creek bank plot 28 GCE1_CB36 -- GCE1 creek bank plot 36 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_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_CB21 -- GCE2 creek bank plot 21 GCE2_CB23 -- GCE2 creek bank plot 23 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_CB3 -- GCE4 creek bank plot 3 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_MM6 -- GCE4 mid-marsh plot 6 GCE4_MM8 -- GCE4 mid-marsh plot 8 GCE5_CB1 -- GCE5 creek bank plot 1 GCE5_CB3 -- GCE5 creek bank plot 3 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_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_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_MM1 -- GCE8 mid-marsh plot 1 GCE8_MM13 -- GCE8 mid-marsh plot 13 GCE8_MM18 -- GCE8 mid-marsh plot 18 GCE8_MM6 -- GCE8 mid-marsh plot 6 GCE9_CB11 -- GCE9 creek bank plot 11 GCE9_CB18 -- GCE9 creek bank plot 18 GCE9_CB26 -- GCE9 creek bank plot 26 GCE9_CB33 -- GCE9 creek bank plot 33 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 -- 081 25 21.1 W, 31 32 19.1 N GCE1_CB13 -- 081 25 20.8 W, 31 32 18.5 N GCE1_CB28 -- 081 25 20.0 W, 31 32 19.0 N GCE1_CB36 -- 081 25 20.2 W, 31 32 18.6 N GCE1_MM1 -- 081 25 22.2 W, 31 32 21.8 N GCE1_MM3 -- 081 25 21.2 W, 31 32 21.9 N GCE1_MM6 -- 081 25 19.6 W, 31 32 22.1 N GCE1_MM8 -- 081 25 18.3 W, 31 32 22.2 N GCE10_CB1 -- 081 16 13.7 W, 31 28 37.2 N GCE10_CB3 -- 081 16 14.6 W, 31 28 36.2 N GCE10_CB6 -- 081 16 15.3 W, 31 28 35.8 N GCE10_CB8 -- 081 16 17.8 W, 31 28 36.5 N GCE10_JN1 -- 081 16 14.9 W, 31 28 37.1 N GCE10_JN3 -- 081 16 14.6 W, 31 28 37.0 N GCE10_JN6 -- 081 16 14.3 W, 31 28 38.5 N GCE10_JN8 -- 081 16 14.5 W, 31 28 39.5 N GCE10_MM1 -- 081 16 13.9 W, 31 28 38.1 N GCE10_MM3 -- 081 16 15.1 W, 31 28 36.9 N GCE10_MM6 -- 081 16 16.6 W, 31 28 37.2 N GCE10_MM8 -- 081 16 17.6 W, 31 28 37.2 N GCE2_CB21 -- 081 17 45.9 W, 31 32 10.3 N GCE2_CB23 -- 081 17 44.7 W, 31 32 10.5 N GCE2_CB48 -- 081 17 42.4 W, 31 32 08.3 N GCE2_CB6 -- 081 17 42.4 W, 31 32 09.1 N GCE2_MM1 -- 081 17 46.5 W, 31 32 10.0 N GCE2_MM3 -- 081 17 45.3 W, 31 32 09.5 N GCE2_MM6 -- 081 17 43.9 W, 31 32 09.0 N GCE2_MM8 -- 081 17 43.0 W, 31 32 09.2 N GCE3_CB1 -- 081 13 44.2 W, 31 31 08.1 N GCE3_CB3 -- 081 13 44.4 W, 31 31 07.2 N GCE3_CB6 -- 081 13 44.8 W, 31 31 05.9 N GCE3_CB8 -- 081 13 45.3 W, 31 31 05.4 N GCE3_MM1 -- 081 13 44.4 W, 31 31 10.5 N GCE3_MM3 -- 081 13 44.8 W, 31 31 09.6 N GCE3_MM6 -- 081 13 45.7 W, 31 31 07.9 N GCE3_MM8 -- 081 13 46.0 W, 31 31 07.1 N GCE4_CB1 -- 081 21 55.8 W, 31 27 06.0 N GCE4_CB3 -- 081 21 56.0 W, 31 27 05.3 N GCE4_CB46 -- 081 21 58.1 W, 31 27 04.6 N GCE4_CB8 -- 081 21 58.7 W, 31 27 05.3 N GCE4_MM1 -- 081 21 55.9 W, 31 27 09.5 N GCE4_MM3 -- 081 21 56.0 W, 31 27 08.5 N GCE4_MM6 -- 081 21 56.9 W, 31 27 07.2 N GCE4_MM8 -- 081 21 57.5 W, 31 27 06.4 N GCE5_CB1 -- 081 20 23.7 W, 31 26 09.9 N GCE5_CB3 -- 081 20 24.6 W, 31 26 09.5 N GCE5_CB6 -- 081 20 25.6 W, 31 26 08.9 N GCE5_CB8 -- 081 20 26.2 W, 31 26 08.5 N GCE5_MM1 -- 081 20 26.5 W, 31 26 09.6 N GCE5_MM3 -- 081 20 27.6 W, 31 26 09.2 N GCE5_MM6 -- 081 20 29.1 W, 31 26 08.3 N GCE5_MM8 -- 081 20 29.8 W, 31 26 07.6 N GCE6_CB1 -- 081 16 47.3 W, 31 23 18.3 N GCE6_CB23 -- 081 16 47.6 W, 31 23 17.6 N GCE6_CB6 -- 081 16 47.0 W, 31 23 15.9 N GCE6_CB8 -- 081 16 47.9 W, 31 23 15.2 N GCE6_MM1 -- 081 16 48.5 W, 31 23 18.0 N GCE6_MM3 -- 081 16 48.5 W, 31 23 17.1 N GCE6_MM6 -- 081 16 49.5 W, 31 23 15.9 N GCE6_MM8 -- 081 16 50.4 W, 31 23 15.1 N GCE7_CB1 -- 081 28 43.3 W, 31 20 06.3 N GCE7_CB3 -- 081 28 43.4 W, 31 20 05.8 N GCE7_CB6 -- 081 28 42.8 W, 31 20 04.9 N GCE7_CB8 -- 081 28 42.6 W, 31 20 04.3 N GCE7_MM1 -- 081 28 42.9 W, 31 20 06.6 N GCE7_MM3 -- 081 28 42.6 W, 31 20 05.8 N GCE7_MM6 -- 081 28 41.8 W, 31 20 04.7 N GCE7_MM8 -- 081 28 40.9 W, 31 20 04.6 N GCE8_CB21 -- 081 24 58.0 W, 31 18 28.9 N GCE8_CB26 -- 081 24 55.7 W, 31 18 27.5 N GCE8_CB28 -- 081 24 55.2 W, 31 18 27.1 N GCE8_CB3 -- 081 24 56.7 W, 31 18 28.3 N GCE8_MM1 -- 081 24 56.8 W, 31 18 32.6 N GCE8_MM13 -- 081 24 56.0 W, 31 18 32.0 N GCE8_MM18 -- 081 24 54.5 W, 31 18 30.4 N GCE8_MM6 -- 081 24 54.9 W, 31 18 31.2 N GCE9_CB11 -- 081 20 01.4 W, 31 21 07.6 N GCE9_CB18 -- 081 20 04.8 W, 31 21 06.0 N GCE9_CB26 -- 081 20 03.9 W, 31 21 06.4 N GCE9_CB33 -- 081 20 02.3 W, 31 21 07.0 N GCE9_MM1 -- 081 20 01.5 W, 31 21 04.3 N GCE9_MM3 -- 081 20 00.5 W, 31 21 04.2 N GCE9_MM6 -- 081 19 58.6 W, 31 21 03.2 N GCE9_MM8 -- 081 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_CB28 -- Lower coastal plain GCE1_CB36 -- 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_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_CB21 -- Barrier island GCE2_CB23 -- 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_CB3 -- Lower coastal plain GCE4_CB46 -- Lower coastal plain GCE4_CB8 -- Lower coastal plain GCE4_MM1 -- Lower coastal plain GCE4_MM3 -- Lower coastal plain GCE4_MM6 -- Lower coastal plain GCE4_MM8 -- Lower coastal plain GCE5_CB1 -- Barrier island GCE5_CB3 -- 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_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_CB21 -- Lower coastal plain GCE8_CB26 -- Lower coastal plain GCE8_CB28 -- Lower coastal plain GCE8_CB3 -- Lower coastal plain GCE8_MM1 -- Lower coastal plain GCE8_MM13 -- Lower coastal plain GCE8_MM18 -- Lower coastal plain GCE8_MM6 -- Lower coastal plain GCE9_CB11 -- Barrier island GCE9_CB18 -- Barrier island GCE9_CB26 -- Barrier island GCE9_CB33 -- 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_CB28 -- Intertidal salt marsh bordering maritime forest GCE1_CB36 -- 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_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_CB21 -- Intertidal salt marsh GCE2_CB23 -- 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_CB3 -- 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_MM6 -- Intertidal salt marsh bordering maritime forest GCE4_MM8 -- Intertidal salt marsh bordering maritime forest GCE5_CB1 -- Intertidal salt marsh GCE5_CB3 -- 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_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_CB21 -- Brackish tidal marsh GCE8_CB26 -- Brackish tidal marsh GCE8_CB28 -- Brackish tidal marsh GCE8_CB3 -- Brackish tidal marsh GCE8_MM1 -- Brackish tidal marsh GCE8_MM13 -- Brackish tidal marsh GCE8_MM18 -- Brackish tidal marsh GCE8_MM6 -- Brackish tidal marsh GCE9_CB11 -- Intertidal salt marsh GCE9_CB18 -- Intertidal salt marsh GCE9_CB26 -- Intertidal salt marsh GCE9_CB33 -- 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_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_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_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_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_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_CB3 -- 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_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_CB3 -- 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_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_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_MM1 -- 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_MM6 -- 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_CB18 -- 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_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_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_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_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_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_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_CB3 -- 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_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_CB3 -- 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_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_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_MM1 -- 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_MM6 -- 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_CB18 -- 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_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_CB28 -- unspecified GCE1_CB36 -- unspecified GCE1_MM1 -- unspecified GCE1_MM3 -- unspecified GCE1_MM6 -- unspecified GCE1_MM8 -- unspecified GCE10_CB1 -- 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_CB21 -- unspecified GCE2_CB23 -- 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_CB3 -- unspecified GCE4_CB46 -- unspecified GCE4_CB8 -- unspecified GCE4_MM1 -- unspecified GCE4_MM3 -- unspecified GCE4_MM6 -- unspecified GCE4_MM8 -- unspecified GCE5_CB1 -- unspecified GCE5_CB3 -- 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_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_CB21 -- unspecified GCE8_CB26 -- unspecified GCE8_CB28 -- unspecified GCE8_CB3 -- unspecified GCE8_MM1 -- unspecified GCE8_MM13 -- unspecified GCE8_MM18 -- unspecified GCE8_MM6 -- unspecified GCE9_CB11 -- unspecified GCE9_CB18 -- unspecified GCE9_CB26 -- unspecified GCE9_CB33 -- 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_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_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_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_CB21 -- Spartina alterniflora all tall or medium. GCE2_CB23 -- 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_CB3 -- 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_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_CB3 -- 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_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_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_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_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_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. 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_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_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_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. 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). 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. 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, 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, 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). 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. 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). 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. 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 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 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 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). 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: C22. 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). 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. 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). 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: C1, 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). 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. 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 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 -- creekbank and mid-marsh -- and eight plots were randomly located in each zone and marked with stakes. 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 14, 2013 End of Observations: Oct 18, 2013 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 Determiniation -- 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. b. Protocols: 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) d. Taxonomy and Systematics: Method 1: Participants were trained to recognize mollusc species in the field by D. Bishop. Final species identifications were made (under the supervision of D. Bishop) 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 e. Speclies List: f. Permit History: Method 1: not applicableCollections 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 4. Project Personnel a. Personnel: 1: Steven C. Pennings 2: Merryl Alber 3: Jacob Shalack 4: Caroline M. Reddy 5: Sasha Greenspan 6: Joel Craig b. Affiliations: 1: University of Houston, Houston, Texas 2: University of Georgia, Athens, Georgia 3: University of Georgia Marine Institute, Sapelo Island, Georgia 4: University of Georgia, Sapelo Island, Georgia 5: University of Georgia Marine Institute, Sapelo Island, Georgia 6: University of Georgia, Athens, Georgia III. Data Set Status and Accessibility A. Status 1. Latest Update: 12-Oct-2016 2. Latest Archive Date: 15-Sep-2014 3. Latest Metadata Update: 12-Oct-2016 4. Data Verification Status: New Submission 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: Wade M. Sheldon, Jr. Address: Dept. of Marine Sciences University of Georgia Athens, Georgia 30602-3636 Country: USA Email: sheldon@uga.edu 3. Copyright Restrictions: not copyrighted 4. Restrictions: All publications based on this data set must cite the contributor and Georgia Coastal Ecosystems LTER project, and two copies of the manuscript must be submitted to the GCE-LTER Information Management Office. a. Release Date: Affiliates: Nov 01, 2013, Public: Nov 01, 2014 b. Citation: Data provided by the Georgia Coastal Ecosystems Long Term Ecological Research Project, supported by funds from NSF OCE 1237140 (data set INV-GCEM-1407a) 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-GCEM-1407a_1_0.CSV 2. Size: 2938 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) 7. Authentication Procedures: 8. Calculations: 9. Processing History: Software version: GCE Data Toolbox Version 3.9.6b (27-Aug-2016) Data structure version: GCE Data Structure 1.1 (29-Mar-2001) Original data file processed: INV-GCEM-1407a.txt (2938 records) Data processing history: 15-Sep-2014: new GCE Data Structure 1.1 created ('newstruct') 15-Sep-2014: 2938 rows imported from ASCII data file 'INV-GCEM-1407a.txt' ('imp_ascii') 15-Sep-2014: 81 metadata fields in file header parsed ('parse_header') 15-Sep-2014: data structure validated ('gce_valid') 15-Sep-2014: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 15-Sep-2014: added column 'Location' at position 7 ('addcol') 15-Sep-2014: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 15-Sep-2014: 230 values in 'Location' were updated with new values ('update_data') 15-Sep-2014: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 15-Sep-2014: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 15-Sep-2014: 213 values in 'Location' were updated with new values ('update_data') 15-Sep-2014: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 15-Sep-2014: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 15-Sep-2014: 164 values in 'Location' were updated with new values ('update_data') 15-Sep-2014: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 15-Sep-2014: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 15-Sep-2014: 156 values in 'Location' were updated with new values ('update_data') 15-Sep-2014: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 15-Sep-2014: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 15-Sep-2014: 156 values in 'Location' were updated with new values ('update_data') 15-Sep-2014: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 15-Sep-2014: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 15-Sep-2014: 156 values in 'Location' were updated with new values ('update_data') 15-Sep-2014: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 15-Sep-2014: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 15-Sep-2014: 156 values in 'Location' were updated with new values ('update_data') 15-Sep-2014: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 15-Sep-2014: 156 values in 'Location' were updated with new values ('update_data') 15-Sep-2014: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 15-Sep-2014: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 15-Sep-2014: 66 values in 'Location' were updated with new values ('update_data'): changed record 1043 from 'GCE5_CB13' to 'GCE5_CB3', changed record 1044 from 'GCE5_CB13' to 'GCE5_CB3', changed record 1045 from 'GCE5_CB13' to 'GCE5_CB3', changed record 1046 from 'GCE5_CB13' to 'GCE5_CB3', changed record 1047 from 'GCE5_CB13' to 'GCE5_CB3', changed record 1048 from 'GCE5_CB13' to 'GCE5_CB3', changed record 1169 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1170 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1171 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1172 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1173 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1174 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1175 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1176 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1177 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1178 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1179 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1180 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1181 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1182 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1183 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1184 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1185 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1186 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1187 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1188 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1189 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1190 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1191 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1192 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1193 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1194 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1195 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1196 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1197 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1198 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1199 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1200 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1201 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1202 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1203 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1204 from 'GCE6_CB16' to 'GCE6_CB6', changed record 1571 from 'GCE9_CB21' to 'GCE9_CB11', changed record 1572 from 'GCE9_CB21' to 'GCE9_CB11', changed record 1573 from 'GCE9_CB21' to 'GCE9_CB11', changed record 2009 from 'GCE5_CB13' to 'GCE5_CB3', changed record 2018 from 'GCE6_CB16' to 'GCE6_CB6', changed record 2061 from 'GCE9_CB21' to 'GCE9_CB11', changed record 2325 from 'GCE5_CB13' to 'GCE5_CB3', changed record 2334 from 'GCE6_CB16' to 'GCE6_CB6', changed record 2356 from 'GCE9_CB21' to 'GCE9_CB11', changed record 2413 from 'GCE5_CB13' to 'GCE5_CB3', changed record 2422 from 'GCE6_CB16' to 'GCE6_CB6', changed record 2444 from 'GCE9_CB21' to 'GCE9_CB11', changed record 2501 from 'GCE5_CB13' to 'GCE5_CB3', changed record 2510 from 'GCE6_CB16' to 'GCE6_CB6', changed record 2532 from 'GCE9_CB21' to 'GCE9_CB11', changed record 2589 from 'GCE5_CB13' to 'GCE5_CB3', changed record 2598 from 'GCE6_CB16' to 'GCE6_CB6', changed record 2620 from 'GCE9_CB21' to 'GCE9_CB11', changed record 2709 from 'GCE5_CB13' to 'GCE5_CB3', changed record 2718 from 'GCE6_CB16' to 'GCE6_CB6', changed record 2750 from 'GCE9_CB21' to 'GCE9_CB11', changed record 2877 from 'GCE5_CB13' to 'GCE5_CB3', changed record 2886 from 'GCE6_CB16' to 'GCE6_CB6', changed record 2915 from 'GCE9_CB21' to 'GCE9_CB11' 15-Sep-2014: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 15-Sep-2014: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 15-Sep-2014: added column 'Location_Notes' at position 8 ('addcol') 15-Sep-2014: updated 1 metadata fields in the Data sections ('addmeta') 15-Sep-2014: manually added 'E' flags to 230 records in column(s) Location, Latitude and Longitude ('addflags') 15-Sep-2014: locked Q/C flag criteria for columns Location, Longitude and Latitude to prevent automatic evaluation ('flag_locks') 15-Sep-2014: updated 1 metadata fields in the Data sections ('addmeta') 15-Sep-2014: 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') 15-Sep-2014: updated 8 metadata fields in the Site sections ('addmeta') 15-Sep-2014: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 15-Sep-2014: updated 56 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 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 2675 from 'Guekensia' to 'Geukensia', changed record 2676 from 'Guekensia' to 'Geukensia', changed record 2677 from 'Guekensia' to 'Geukensia', changed record 2678 from 'Guekensia' to 'Geukensia', changed record 2679 from 'Guekensia' to 'Geukensia', changed record 2680 from 'Guekensia' to 'Geukensia', changed record 2681 from 'Guekensia' to 'Geukensia', changed record 2720 from 'Guekensia' to 'Geukensia', changed record 2721 from 'Guekensia' to 'Geukensia', changed record 2722 from 'Guekensia' to 'Geukensia', changed record 2723 from 'Guekensia' to 'Geukensia', changed record 2724 from 'Guekensia' to 'Geukensia', changed record 2725 from 'Guekensia' to 'Geukensia', changed record 2726 from 'Guekensia' to 'Geukensia', changed record 2727 from 'Guekensia' to 'Geukensia', changed record 2728 from 'Guekensia' to 'Geukensia', changed record 2729 from 'Guekensia' to 'Geukensia', changed record 2730 from 'Guekensia' to 'Geukensia', changed record 2731 from 'Guekensia' to 'Geukensia', changed record 2732 from 'Guekensia' to 'Geukensia', changed record 2733 from 'Guekensia' to 'Geukensia', changed record 2762 from 'Guekensia' to 'Geukensia', changed record 2763 from 'Guekensia' to 'Geukensia', changed record 2764 from 'Guekensia' to 'Geukensia', changed record 2765 from 'Guekensia' to 'Geukensia', changed record 2766 from 'Guekensia' to 'Geukensia', changed record 2767 from 'Guekensia' to 'Geukensia', changed record 2768 from 'Guekensia' to 'Geukensia', changed record 2769 from 'Guekensia' to 'Geukensia', changed record 2770 from 'Guekensia' to 'Geukensia', changed record 2771 from 'Guekensia' to 'Geukensia', changed record 2772 from 'Guekensia' to 'Geukensia', changed record 2773 from 'Guekensia' to 'Geukensia', changed record 2774 from 'Guekensia' to 'Geukensia', changed record 2775 from 'Guekensia' to 'Geukensia', changed record 2776 from 'Guekensia' to 'Geukensia', changed record 2777 from 'Guekensia' to 'Geukensia', changed record 2778 from 'Guekensia' to 'Geukensia', changed record 2779 from 'Guekensia' to 'Geukensia', changed record 2780 from 'Guekensia' to 'Geukensia', changed record 2781 from 'Guekensia' to 'Geukensia', changed record 2782 from 'Guekensia' to 'Geukensia', changed record 2783 from 'Guekensia' to 'Geukensia', changed record 2784 from 'Guekensia' to 'Geukensia', changed record 2785 from 'Guekensia' to 'Geukensia', changed record 2786 from 'Guekensia' to 'Geukensia', changed record 2787 from 'Guekensia' to 'Geukensia', changed record 2788 from 'Guekensia' to 'Geukensia', changed record 2789 from 'Guekensia' to 'Geukensia', changed record 2790 from 'Guekensia' to 'Geukensia', changed record 2791 from 'Guekensia' to 'Geukensia', changed record 2792 from 'Guekensia' to 'Geukensia', changed record 2793 from 'Guekensia' to 'Geukensia', changed record 2794 from 'Guekensia' to 'Geukensia', changed record 2795 from 'Guekensia' to 'Geukensia', changed record 2796 from 'Guekensia' to 'Geukensia', changed record 2797 from 'Guekensia' to 'Geukensia', changed record 2798 from 'Guekensia' to 'Geukensia', changed record 2799 from 'Guekensia' to 'Geukensia', changed record 2800 from 'Guekensia' to 'Geukensia', changed record 2801 from 'Guekensia' to 'Geukensia', changed record 2802 from 'Guekensia' to 'Geukensia', changed record 2803 from 'Guekensia' to 'Geukensia', changed record 2804 from 'Guekensia' to 'Geukensia', changed record 2805 from 'Guekensia' to 'Geukensia', changed record 2806 from 'Guekensia' to 'Geukensia', changed record 2807 from 'Guekensia' to 'Geukensia', changed record 2808 from 'Guekensia' to 'Geukensia', changed record 2809 from 'Guekensia' to 'Geukensia', changed record 2810 from 'Guekensia' to 'Geukensia', changed record 2811 from 'Guekensia' to 'Geukensia', changed record 2812 from 'Guekensia' to 'Geukensia', changed record 2813 from 'Guekensia' to 'Geukensia', changed record 2814 from 'Guekensia' to 'Geukensia', changed record 2815 from 'Guekensia' to 'Geukensia', changed record 2816 from 'Guekensia' to 'Geukensia', changed record 2817 from 'Guekensia' to 'Geukensia', changed record 2821 from 'Guekensia' to 'Geukensia', changed record 2822 from 'Guekensia' to 'Geukensia', changed record 2823 from 'Guekensia' to 'Geukensia', changed record 2824 from 'Guekensia' to 'Geukensia', changed record 2825 from 'Guekensia' to 'Geukensia', changed record 2826 from 'Guekensia' to 'Geukensia', changed record 2827 from 'Guekensia' to 'Geukensia', changed record 2828 from 'Guekensia' to 'Geukensia', changed record 2829 from 'Guekensia' to 'Geukensia', changed record 2830 from 'Guekensia' to 'Geukensia', changed record 2831 from 'Guekensia' to 'Geukensia', changed record 2832 from 'Guekensia' to 'Geukensia', changed record 2833 from 'Guekensia' to 'Geukensia', changed record 2834 from 'Guekensia' to 'Geukensia', changed record 2835 from 'Guekensia' to 'Geukensia' 12-Oct-2016: Q/C flagging criteria applied for column(s) 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: manually edited data set metadata ('ui_editmetadata') 12-Oct-2016: Description of column Zone edited; Units of column Month changed from 'MM' to 'M'; Units of column Day changed from 'DD' to 'D';Q/C Criteria of column Year changed from 'x<2013='I';x>2013='I';x<2013='Q';x>2013='Q'' to 'x<2013='Q';x>2013='Q''; Q/C Criteria of column Month changed from 'x<10='I';x>10='I';x<10='Q';x>10='Q'' to 'x<1='I';x>12='I';x<10='Q';x>10='Q''; Q/C Criteria of column Zone changed from 'x<1='I';x>3='I';x<1='Q';x>3='Q'' to 'x<1='I';x>3='I''; Q/C Criteria of column Mollusc_Length changed from 'x<0='I';x<0='Q';x>117='Q'' to 'x<0='I';x<0='Q';x>120='Q' ('ui_editor') 12-Oct-2016: Q/C flagging criteria applied for column(s) Year, Month, Zone and Mollusc_Length, 'flags' field updated ('dataflag') 12-Oct-2016: flags for columns Location, Longitude and Latitude converted to data columns, flag codes updated in metadata ('flags2cols') 12-Oct-2016: updated 6 metadata fields in the Data sections ('addmeta') 12-Oct-2016: updated 15 metadata fields in the Status, Data sections to reflect attribute metadata ('updatecols') 12-Oct-2016: parsed and formatted metadata ('listmeta') B. Variable Information 1. Variable Name: column 1. Year column 2. Month column 3. Day 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. Mollusc_Length column 16. Condition column 17. Notes 2. Variable Definition: column 1. Calendar year of observation column 2. Calendar month of observation column 3. Calendar day of observation column 4. Nominal GCE-LTER sampling site 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. Length of measurable individuals collected from each plot column 16. Binary code to indicate shell condition of the individual specimen column 17. Field sampling notes 3. Units of Measurement: column 1. YYYY column 2. M column 3. D 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. mm column 16. None column 17. None 4. Data Type a. Storage Type: column 1. integer column 2. integer column 3. integer 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. floating-point column 16. integer column 17. string b. Variable Codes: Site: 1 = GCE1 (Eulonia), 2 = GCE2 (Four Mile Island), 3 = GCE3 (North Sapelo), 4 = GCE4 (Meridian), 5 = GCE5 (Folly River), 6 = GCE6 (Dean Creek), 7 = GCE7 (Carrs Island), 8 = GCE8 (Aligator Creek), 9 = GCE9 (Rockdedundy Island), 10 = GCE10 (Moses Hammock) Zone: 1 = Creekbank zone, 2 = Mid-marsh zone, 3 = High-marsh Juncus zone Species: Littoraria = Littoraria irrorata, Melampus = Melampus bidentatus, Detracia = Detracia floridana, Ilyanassa = Ilyanassa obsoleta, Hydrobiidae = unidentified hydrobiid snail, Geukensia = Geukensia demissa, Polymesoda = Polymesoda caroliniana, Succineidae = unidentified succineid (amber) snails Condition: 0 = Undamaged, 1 = Damaged 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) c. Numeric Range: column 1. 2013 to 2013 column 2. 10 to 10 column 3. 14 to 18 column 4. 1 to 10 column 5. 1 to 3 column 6. 1 to 48 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. 1 to 117.2 column 16. 0 to 0 column 17. (none) d. Missing Value Code: 5. Data Format a. Column Type: column 1. numerical column 2. numerical column 3. numerical 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. numerical column 16. numerical column 17. text b. Number of Columns: 17 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. 1 column 16. 0 column 17. 0 6. Logical Variable Type: column 1. datetime (discrete) column 2. datetime (discrete) column 3. datetime (discrete) 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. data (continuous) column 16. coded value (discrete) column 17. free text (none) 7. Flagging Criteria: column 1. x<2013="Q";x>2013="Q" column 2. x<1="I";x>12="I";x<10="Q";x>10="Q" column 3. x<1="I";x>31="I";x<14="Q";x>18="Q" column 4. x<1="I";x>10="I";x<1="Q";x>10="Q" column 5. x<1="I";x>3="I" column 6. x<1="I";x<1="Q";x>48="Q" 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,"Littoraria,Melampus,Detracia,Ilyanassa,Hydrobiidae,Geukensia,Polymesod a,Succineidae")="I" column 15. x<0="I";x<0="Q";x>120="Q" column 16. x<0="I";x>1="I";x<0="Q";x>1="Q" column 17. none C. Data Anomalies: 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. 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 E. Archival Practices: F. Publications: not specified G. History of Data Set Usage 1. Data Request History: not specified 2. Data Set Update History: none 3. Review History: none 4. Questions and Comments from Users: none