I. Data Set Descriptors A. Title: Steven C. Pennings. 2021. Disturbance to monitoring plots at Altamaha River Plant Transition Sites SCSA, ZSC1, and ZSC2 from 2013 to 2025.. Georgia Coastal Ecosystems LTER Data Catalog (data set PLT-GCEM-1801c; /data/PLT-GCEM-1801c) B. Accession Number: PLT-GCEM-1801c 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: We established permanent vegetation monitoring plots at Altamaha River plant transition sites in 2012. Starting in 2013, when we recorded plant sizes, we also noted any disturbance to the plots. Plots were scored as normal (no visible disturbance), disturbed by wrack (wrack present in plots and stems dead or broken), disturbed by snails (>100 Littoraria per square meter and plant biomass low), disturbed by pigs (animal trail through the plot), initial slump (plot at the creekbank sliding into the creek based on movement of pvc poles or formation of a crevasse), and terminal slump (plot had slid far enough down that vegetation had drowned). Plots that experienced terminal slump or could not be found for any reason were scored as lost. Lost plots were replaced with a new plot in the same general area with the plot code incremented by 10. For example if plot 3 was lost, it was replaced by 13, and then in turn by 23. 3. Study Type: Monitoring 4. Study Themes: Plant Ecology 5. LTER Core Areas: Disturbance Patterns 6. Georeferences: none 7. Submission Date: Feb 09, 2021 D. Keywords: Altamaha River, Angiospermae, Animalia, Bilateria, disturbance, Disturbance Patterns, Embryophyta, Gastropoda, GCE, geomorphology, Georgia, Georgia Coastal Ecosystems, Juncaceae, Juncus, Juncus roemerianus, Lilianae, Littoraria, littoraria irrorata, Littorinidae, Lophozoa, LTER, Magnoliopsida, Mollusca, Neotaenioglossa, Plantae, Poaceae, Poales, Protostomia, Sapelo Island, Spartina, Spartina alterniflora, Spermatophytina, Streptophyta, Tracheophyta, USA, Viridaeplantae, Viridiplantae, wrack, Zizaniopsis, Zizaniopsis miliacea II. Research Origin Descriptors A. Overall Project Description 1. Project Title: Georgia Coastal Ecosystems LTER - IV 2. Principal Investigators: Name: Merryl Alber Address: Dept. of Marine Sciences University of Georgia Athens, Georgia 30602-3636 Country: USA Email: malber@uga.edu 3. Funding Period: Feb 01, 2019 to Jan 31, 2025 4. Objectives: The GCE-LTER project has four goals. 1) Track environmental and human drivers that can cause perturbations in our focal ecosystems. This will be accomplished this through continuing long-term measurements of climate, water chemistry, oceanic exchange, and human activities on the landscape. 2) Describe temporal and spatial variability in physical, chemical, geological and biological characteristics of the study system (coastal wetland complexes) and how they respond to external drivers. This will be accomplished through field monitoring in combination with remote sensing and modeling. 3) Characterize the ecological responses of intertidal marshes to disturbance. This will be accomplished by ongoing monitoring and experimental work to evaluate system responses to major perturbations in three key marsh habitats (changes in inundation and predator exclusion in Spartina-dominated salt marshes; increases in salinity in fresh marshes; changes in runoff in high marshes), by implementing standardized experimental disturbances along salinity and elevation gradients, and by tracking responses to natural disturbances. 4) Evaluate ecosystem properties at the landscape level (habitat distribution, net and gross primary production, C budgets) and assess the cumulative effects of disturbance on these properties. The project will also develop relationships between drivers and response variables, which can be used to predict the effects of future changes. This will be accomplished through a combination of data synthesis, remote sensing and modeling. 5. Abstract: The Georgia Coastal Ecosystems (GCE) Long Term Ecological Research (LTER) program, based at the University of Georgia Marine Institute on Sapelo Island, Georgia, was established in 2000 to study long-term change in coastal ecosystems. Estuaries (places where salt water from the ocean mixes with fresh water from the land) and their adjacent marshes provide food and refuge for fish, shellfish and birds; protect the shoreline from storms; help to keep the water clean; and store carbon. The GCE LTER researchers study marshes and estuaries to understand how these ecosystems function, to track how they change over time, and to predict how they might be affected by future changes in climate and human activities. They accomplish this by tracking the major factors that can cause long-term change in coastal areas (e.g. sea level, rainfall, upstream development), and measuring the effects of these factors on the study site. They also conduct focused studies to assess how key marsh habitats will respond to major changes expected in the future, including large-scale experiments to evaluate the effects of a) increases in the salinity of the water that floods freshwater marshes (mimicking drought and/or sea level rise), b) changes in water runoff from land into the upland marsh border (mimicking drought or upland development), and c) exclusion of larger organisms in the salt marsh (mimicking long-term declines in predators). During this award they will initiate additional studies to systematically evaluate how coastal wetlands respond to disturbances. Disturbances, or disruptions in the environment, are particularly important to understand in the context of long-term background changes such as increasing sea level, and GCE researchers are working to assess the cumulative effects of multiple disturbances on the landscape. The GCE education and outreach program works to share an understanding of coastal ecosystems with teachers and students, coastal managers, citizen scientist and the general public. 6. Funding Source: NSF OCE 1832178 B. Sub-project Description 1. Site Description a. Geographic Location: SCSA -- SCSA Altamaha Plant Transition Site, Georgia, USA ZSC1 -- ZSC1 Altamaha Plant Transition Site, Georgia, USA ZSC2 -- ZSC2 Altamaha Plant Transition Site, Georgia, USA ZSC1_CB1 -- Rapid assessment site creekbank plot TwoWay1 ZSC1_CB2 -- Rapid assessment site creekbank plot TwoWay2 ZSC1_CB3 -- Rapid assessment site creekbank plot TwoWay3 ZSC1_CB4 -- Rapid assessment site creekbank plot TwoWay4 ZSC1_CB5 -- Rapid assessment site creekbank plot TwoWay5 ZSC1_CB6 -- Rapid assessment site creekbank plot TwoWay6 ZSC1_CB7 -- Rapid assessment site creekbank plot TwoWay7 ZSC1_CB8 -- Rapid assessment site creekbank plot TwoWay8 ZSC2_CB1 -- Rapid assessment site creekbank plot SC36Champney1 ZSC2_CB2 -- Rapid assessment site creekbank plot SC36Champney2 ZSC2_CB3 -- Rapid assessment site creekbank plot SC36Champney3 ZSC2_CB4 -- Rapid assessment site creekbank plot SC36Champney4 ZSC2_CB5 -- Rapid assessment site creekbank plot SC36Champney5 ZSC2_CB6 -- Rapid assessment site creekbank plot SC36Champney6 ZSC2_CB7 -- Rapid assessment site creekbank plot SC36Champney7 ZSC2_CB8 -- Rapid assessment site creekbank plot SC36Champney8 Coordinates: SCSA -- NW: 081 22 34.61 W, 31 19 25.64 N NE: 081 22 16.54 W, 31 19 25.64 N SE: 081 22 16.54 W, 31 19 20.07 N SW: 081 22 34.61 W, 31 19 20.07 N ZSC1 -- NW: 081 27 11.04 W, 31 19 47.07 N NE: 081 26 54.01 W, 31 19 47.07 N SE: 081 26 54.01 W, 31 19 37.01 N SW: 081 27 11.04 W, 31 19 37.01 N ZSC2 -- NW: 081 27 18.91 W, 31 20 31.29 N NE: 081 27 05.14 W, 31 20 31.29 N SE: 081 27 05.14 W, 31 20 19.92 N SW: 081 27 18.91 W, 31 20 19.92 N ZSC1_CB1 -- 81 27 00.3 W, 31 19 43.0 N ZSC1_CB2 -- 81 27 00.1 W, 31 19 43.0 N ZSC1_CB3 -- 81 27 00.0 W, 31 19 43.2 N ZSC1_CB4 -- 81 26 59.9 W, 31 19 43.3 N ZSC1_CB5 -- 81 26 59.3 W, 31 19 43.3 N ZSC1_CB6 -- 81 26 59.0 W, 31 19 43.2 N ZSC1_CB7 -- 81 26 58.8 W, 31 19 43.3 N ZSC1_CB8 -- 81 26 58.4 W, 31 19 43.5 N ZSC2_CB1 -- 81 27 18.2 W, 31 20 28.8 N ZSC2_CB2 -- 81 27 18.1 W, 31 20 28.8 N ZSC2_CB3 -- 81 27 18.0 W, 31 20 28.6 N ZSC2_CB4 -- 81 27 17.7 W, 31 20 28.5 N ZSC2_CB5 -- 81 27 17.4 W, 31 20 28.3 N ZSC2_CB6 -- 81 27 17.2 W, 31 20 28.0 N ZSC2_CB7 -- 81 27 16.9 W, 31 20 27.9 N ZSC2_CB8 -- 81 27 16.9 W, 31 20 27.8 N b. Physiographic Region: SCSA -- Lower coastal plain ZSC1 -- Lower coastal plain ZSC2 -- Lower coastal plain ZSC1_CB1 -- Lower coastal plain ZSC1_CB2 -- Lower coastal plain ZSC1_CB3 -- Lower coastal plain ZSC1_CB4 -- Lower coastal plain ZSC1_CB5 -- Lower coastal plain ZSC1_CB6 -- Lower coastal plain ZSC1_CB7 -- Lower coastal plain ZSC1_CB8 -- Lower coastal plain ZSC2_CB1 -- Lower coastal plain ZSC2_CB2 -- Lower coastal plain ZSC2_CB3 -- Lower coastal plain ZSC2_CB4 -- Lower coastal plain ZSC2_CB5 -- Lower coastal plain ZSC2_CB6 -- Lower coastal plain ZSC2_CB7 -- Lower coastal plain ZSC2_CB8 -- Lower coastal plain c. Landform Components: SCSA -- Estuarine tidal marsh ZSC1 -- Estuarine tidal marsh ZSC2 -- Estuarine tidal marsh ZSC1_CB1 -- Estuarine tidal marsh ZSC1_CB2 -- Estuarine tidal marsh ZSC1_CB3 -- Estuarine tidal marsh ZSC1_CB4 -- Estuarine tidal marsh ZSC1_CB5 -- Estuarine tidal marsh ZSC1_CB6 -- Estuarine tidal marsh ZSC1_CB7 -- Estuarine tidal marsh ZSC1_CB8 -- Estuarine tidal marsh ZSC2_CB1 -- Estuarine tidal marsh ZSC2_CB2 -- Estuarine tidal marsh ZSC2_CB3 -- Estuarine tidal marsh ZSC2_CB4 -- Estuarine tidal marsh ZSC2_CB5 -- Estuarine tidal marsh ZSC2_CB6 -- Estuarine tidal marsh ZSC2_CB7 -- Estuarine tidal marsh ZSC2_CB8 -- Estuarine tidal marsh d. Hydrographic Characteristics: SCSA -- Site borders the Altamaha River, and is subject to 2-3m semi-diurnal tides ZSC1 -- Site borders the Altamaha River, and is subject to 2-3m semi-diurnal tides ZSC2 -- Site borders the Champney River, and is subject to 2-3m semi-diurnal tides ZSC1_CB1 -- Site borders the Altamaha River, and is subject to 2-3m semi-diurnal tides ZSC1_CB2 -- Site borders the Altamaha River, and is subject to 2-3m semi-diurnal tides ZSC1_CB3 -- Site borders the Altamaha River, and is subject to 2-3m semi-diurnal tides ZSC1_CB4 -- Site borders the Altamaha River, and is subject to 2-3m semi-diurnal tides ZSC1_CB5 -- Site borders the Altamaha River, and is subject to 2-3m semi-diurnal tides ZSC1_CB6 -- Site borders the Altamaha River, and is subject to 2-3m semi-diurnal tides ZSC1_CB7 -- Site borders the Altamaha River, and is subject to 2-3m semi-diurnal tides ZSC1_CB8 -- Site borders the Altamaha River, and is subject to 2-3m semi-diurnal tides ZSC2_CB1 -- Site borders the Champney River, and is subject to 2-3m semi-diurnal tides ZSC2_CB2 -- Site borders the Champney River, and is subject to 2-3m semi-diurnal tides ZSC2_CB3 -- Site borders the Champney River, and is subject to 2-3m semi-diurnal tides ZSC2_CB4 -- Site borders the Champney River, and is subject to 2-3m semi-diurnal tides ZSC2_CB5 -- Site borders the Champney River, and is subject to 2-3m semi-diurnal tides ZSC2_CB6 -- Site borders the Champney River, and is subject to 2-3m semi-diurnal tides ZSC2_CB7 -- Site borders the Champney River, and is subject to 2-3m semi-diurnal tides ZSC2_CB8 -- Site borders the Champney River, and is subject to 2-3m semi-diurnal tides e. Topographic Attributes: SCSA -- Flat, with elevations ranging from 0-3m above mean low tide ZSC1 -- Flat, with elevations ranging from 0-3m above mean low tide ZSC2 -- Flat, with elevations ranging from 0-3m above mean low tide ZSC1_CB1 -- Flat, with elevations ranging from 0-3m above mean low tide ZSC1_CB2 -- Flat, with elevations ranging from 0-3m above mean low tide ZSC1_CB3 -- Flat, with elevations ranging from 0-3m above mean low tide ZSC1_CB4 -- Flat, with elevations ranging from 0-3m above mean low tide ZSC1_CB5 -- Flat, with elevations ranging from 0-3m above mean low tide ZSC1_CB6 -- Flat, with elevations ranging from 0-3m above mean low tide ZSC1_CB7 -- Flat, with elevations ranging from 0-3m above mean low tide ZSC1_CB8 -- Flat, with elevations ranging from 0-3m above mean low tide ZSC2_CB1 -- Flat, with elevations ranging from 0-3m above mean low tide ZSC2_CB2 -- Flat, with elevations ranging from 0-3m above mean low tide ZSC2_CB3 -- Flat, with elevations ranging from 0-3m above mean low tide ZSC2_CB4 -- Flat, with elevations ranging from 0-3m above mean low tide ZSC2_CB5 -- Flat, with elevations ranging from 0-3m above mean low tide ZSC2_CB6 -- Flat, with elevations ranging from 0-3m above mean low tide ZSC2_CB7 -- Flat, with elevations ranging from 0-3m above mean low tide ZSC2_CB8 -- Flat, with elevations ranging from 0-3m above mean low tide f. Geology, Lithology and Soils: SCSA -- unspecified ZSC1 -- unspecified ZSC2 -- unspecified ZSC1_CB1 -- unspecified ZSC1_CB2 -- unspecified ZSC1_CB3 -- unspecified ZSC1_CB4 -- unspecified ZSC1_CB5 -- unspecified ZSC1_CB6 -- unspecified ZSC1_CB7 -- unspecified ZSC1_CB8 -- unspecified ZSC2_CB1 -- unspecified ZSC2_CB2 -- unspecified ZSC2_CB3 -- unspecified ZSC2_CB4 -- unspecified ZSC2_CB5 -- unspecified ZSC2_CB6 -- unspecified ZSC2_CB7 -- unspecified ZSC2_CB8 -- unspecified g. Vegetation Communities: SCSA -- Spartina alterniflora and Spartina cynosuroides ZSC1 -- Spartina cynosuroides and Zizaniopsis miliacea ZSC2 -- Spartina cynosuroides and Zizaniopsis miliacea ZSC1_CB1 -- Spartina cynosuroides and Zizaniopsis miliacea ZSC1_CB2 -- Spartina cynosuroides and Zizaniopsis miliacea ZSC1_CB3 -- Spartina cynosuroides and Zizaniopsis miliacea ZSC1_CB4 -- Spartina cynosuroides and Zizaniopsis miliacea ZSC1_CB5 -- Spartina cynosuroides and Zizaniopsis miliacea ZSC1_CB6 -- Spartina cynosuroides and Zizaniopsis miliacea ZSC1_CB7 -- Spartina cynosuroides and Zizaniopsis miliacea ZSC1_CB8 -- Spartina cynosuroides and Zizaniopsis miliacea ZSC2_CB1 -- Spartina cynosuroides and Zizaniopsis miliacea ZSC2_CB2 -- Spartina cynosuroides and Zizaniopsis miliacea ZSC2_CB3 -- Spartina cynosuroides and Zizaniopsis miliacea ZSC2_CB4 -- Spartina cynosuroides and Zizaniopsis miliacea ZSC2_CB5 -- Spartina cynosuroides and Zizaniopsis miliacea ZSC2_CB6 -- Spartina cynosuroides and Zizaniopsis miliacea ZSC2_CB7 -- Spartina cynosuroides and Zizaniopsis miliacea ZSC2_CB8 -- Spartina cynosuroides and Zizaniopsis miliacea h. History of Land Use and Disturbance: SCSA -- 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 wrack: C1. The following plots are located on creek bank areas that are collapsing: C1, C4. Oct 17, 2014: 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: C4, C7. The following plots were lost and replaced: C1 (replaced with C11). Oct 22, 2015: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. The following plots are on creekbank areas that are collapsing: C5. The following plots were lost due to creekbank erosion (terminal slump) and replaced: C11, C4, C7, C8 (replaced with C21, C14, C17, C18 resp). ZSC1 -- Oct 14, 2013: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No disturbance was observed, and no plots were replaced. Oct 17, 2014: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No disturbance was observed, and no plots were lost and replaced. Oct 22, 2015: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No disturbance was observed, and no plots were lost and replaced. ZSC2 -- Oct 14, 2013: Plots were examined for signs of disturbance by wrack inundation, animal activity, and creek bank erosion. No disturbance was observed, and no plots were replaced. Oct 17, 2014: 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 plants). No plots were lost and replaced. Oct 22, 2015: 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 (slump): C3. Not plots were lost and none were 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: Data was recorded from permanent vegetation plots at Altamaha River plant transition sites SCSZ, ZSC1, and ZSC2 b. Permanent Plots: We established permanent vegetation monitoring plotsat Altamaha River plant transition sites in 2012. c. Data Collection Duration and Frequency: Starting in 2013, when we recorded plant sizes, we also noted any disturbance to the plots. Plots were scored as normal (no visible disturbance), disturbed by wrack (wrack present in plots and stems dead or broken), disturbed by snails (>100 Littoraria per square meter and plant biomass low), disturbed by pigs (animal trail through the plot), initial slump (plot at the creekbank sliding into the creek based on movement of pvc poles or formation of a crevasse), and terminal slump (plot had slid far enough down that vegetation had drowned). Plots that experienced terminal slump or could not be found for any reason were scored as lost. Beginning of Observations: Oct 01, 2012 End of Observations: Oct 31, 2024 3. Research Methods a. Field and Laboratory Methods: Disturbance -- Plots were scored as normal (no visible disturbance), disturbed by wrack (wrack present in plots and stems dead or broken), disturbed by snails (>100 Littoraria per square meter and plant biomass low), disturbed by pigs (animal trail through the plot), initial slump (plot at the creekbank sliding into the creek based on movement of pvc poles or formation of a crevasse), and terminal slump (plot had slid far enough down that vegetation had drowned). Plots that experienced terminal slump or could not be found for any reason were scored as lost. b. Protocols: none c. Instrumentation: none d. Taxonomy and Systematics: not applicable e. Speclies List: f. Permit History: not applicable 4. Project Personnel a. Personnel: Steven C. Pennings b. Affiliations: University of Houston, Houston, Texas III. Data Set Status and Accessibility A. Status 1. Latest Update: 29-Jan-2026 2. Latest Archive Date: 29-Jan-2026 3. Latest Metadata Update: 29-Jan-2026 4. Data Verification Status: Reviewed by IM B. Accessibility 1. Storage Location and Medium: Stored at GCE-LTER Data Management Office Dept. of Marine Sciences Univ. of Georgia Athens, GA 30602-3636 USA on media: electronic data download (WWW) or compact disk 2. Contact Person: Name: Adam Sapp Address: Department of Marine Sciences University of Georgia Athens, Georgia 30602 Country: USA Email: asapp@uga.edu 3. Copyright Restrictions: not copyrighted 4. Restrictions: This information is licensed under a Creative Commons Attribution 4.0 International License (see: https://creativecommons.org/licenses/by/4.0/). The consumer of these data ("Data User" herein) has an ethical obligation to cite it appropriately in any publication that results from its use. The Data User should realize that these data may be actively used by others for ongoing research and that coordination may be necessary to prevent duplicate publication. The Data User is urged to contact the authors of these data if any questions about methodology or results occur. Where appropriate, the Data User is encouraged to consider collaboration or co-authorship with the authors. The Data User should realize that misinterpretation of data may occur if used out of context of the original study. While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is." The Data User should be aware, however, that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data. The data authors and the repository where these data were obtained shall not be liable for damages resulting from any use or misinterpretation of the data. a. Release Date: Affiliates: Feb 09, 2021, Public: Feb 09, 2021 b. Citation: Data provided by the Georgia Coastal Ecosystems Long Term Ecological Research Project, supported by funds from NSF OCE 1832178 (data set PLT-GCEM-1801c) 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: PLT-GCEM-1801c_6_0.CSV 2. Size: 321 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: Q = questionable value, I = invalid value (out of range), 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 3.9.10 (23-May-2022) Data structure version: GCE Data Structure 1.1 (29-Mar-2001) Original data files processed: Altamaha_River_Plant_Community_Disturbance_Data_Sheet_2013-2018.xlsx (200 records) spennings_20220115T145033_Altamaha_River_Plant_Community_Disturbance_Data_Sheet_2021_ IM.xlsx (24 records) spennings_20221212T162146_Altamaha_River_Plant_Community_Disturbance_Data_Sheet_2022_ IM.xlsx (24 records) spennings_20240115T123554_Altamaha_River_Plant_Community_Disturbance_Data_Sheet_2023. xlsx (25 records) spennings_20241025T145129_Altamaha_River_Plant_Community_Disturbance_Data_Sheet_2024. xlsx (24 records) Altamaha_River_Plant_Community_Disturbance_Data_Sheet_2025_IM.xlsx (24 records) Data processing history: 09-Feb-2021: new GCE Data Structure 1.1 created ('newstruct') 09-Feb-2021: data imported from Excel data file 'Altamaha_River_Plant_Community_Disturbance_Data_Sheet_2013-2018.xlsx' (200 records) 09-Feb-2021: updated 1 metadata fields in the Dataset sections ('addmeta') 09-Feb-2021: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 09-Feb-2021: updated 57 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 09-Feb-2021: updated 1 metadata fields in the Dataset sections ('addmeta') 09-Feb-2021: updated 1 metadata fields in the Dataset sections ('addmeta') 09-Feb-2021: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 09-Feb-2021: updated 57 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 09-Feb-2021: manually edited data set metadata ('ui_editmetadata') 09-Feb-2021: edited data set title in structure and metadata ('ui_editor') 09-Feb-2021: updated 1 metadata fields in the Dataset sections ('addmeta') 09-Feb-2021: updated 1 metadata fields in the Dataset sections ('addmeta') 09-Feb-2021: updated 1 metadata fields in the Dataset sections ('addmeta') 09-Feb-2021: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 09-Feb-2021: updated 57 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 20-Jan-2022: manually edited data set metadata ('ui_editmetadata') 20-Jan-2022: 24 rows added at the bottom of the data set from '' ('datamerge') 20-Jan-2022: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 20-Jan-2022: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 20-Jan-2022: updated 1 metadata fields in the Dataset sections ('addmeta') 20-Jan-2022: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 20-Jan-2022: updated 57 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 28-Jan-2022: edited structure data ('ui_datagrid'): changed 'Plot' row 184 from 18 to 28, changed 'Replacement' row 184 from 28 to 38 28-Jan-2022: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 28-Jan-2022: edited structure data ('ui_datagrid'): changed 'Plot' row 208 from 28 to 38 28-Jan-2022: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 20-Jul-2022: updated 1 metadata fields in the Dataset sections ('addmeta') 20-Jul-2022: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 20-Jul-2022: updated 57 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 20-Jul-2022: manually edited data set metadata ('ui_editmetadata') 23-Feb-2023: 24 rows added at the bottom of the data set from '' ('datamerge') 23-Feb-2023: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 23-Feb-2023: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 23-Feb-2023: updated 1 metadata fields in the Dataset section(s) ('addmeta') 23-Feb-2023: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 23-Feb-2023: updated 57 metadata fields in the Dataset, Project, Site, Status, Study, Supplement section(s) ('addmeta') 23-Feb-2023: manually edited data set metadata ('ui_editmetadata') 24-Feb-2023: edited structure data ('ui_datagrid'): changed 'Day' row 225 from 15 to 19, changed 'Day' row 226 from 15 to 19, changed 'Day' row 227 from 15 to 19, changed 'Day' row 228 from 15 to 19, changed 'Day' row 229 from 15 to 19, changed 'Day' row 230 from 15 to 19, changed 'Day' row 231 from 15 to 19, changed 'Day' row 232 from 15 to 19, changed 'Day' row 233 from 15 to 19, changed 'Day' row 234 from 15 to 19, changed 'Day' row 235 from 15 to 19, changed 'Day' row 236 from 15 to 19, changed 'Day' row 237 from 15 to 19, changed 'Day' row 238 from 15 to 19, changed 'Day' row 239 from 15 to 19, changed 'Day' row 240 from 15 to 19, changed 'Day' row 241 from 15 to 19, changed 'Day' row 242 from 15 to 19, changed 'Day' row 243 from 15 to 19, changed 'Day' row 244 from 15 to 19, changed 'Day' row 245 from 15 to 19, changed 'Day' row 246 from 15 to 19, changed 'Day' row 247 from 15 to 19, changed 'Day' row 248 from 15 to 19 24-Feb-2023: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 20-Feb-2024: 25 rows added at the bottom of the data set from '' ('datamerge') 20-Feb-2024: updated 58 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement section(s) ('addmeta') 20-Feb-2024: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 20-Feb-2024: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 20-Feb-2024: updated 1 metadata fields in the Dataset section(s) ('addmeta') 20-Feb-2024: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 20-Feb-2024: updated 57 metadata fields in the Dataset, Project, Site, Status, Study, Supplement section(s) ('addmeta') 17-Jan-2025: 24 rows added at the bottom of the data set from '' ('datamerge') 17-Jan-2025: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 17-Jan-2025: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 17-Jan-2025: manually edited data set metadata ('ui_editmetadata') 17-Jan-2025: edited data set title in structure and metadata ('ui_editor') 17-Jan-2025: updated 1 metadata fields in the Dataset section(s) ('addmeta') 17-Jan-2025: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 17-Jan-2025: updated 57 metadata fields in the Dataset, Project, Site, Status, Study, Supplement section(s) ('addmeta') 17-Jan-2025: updated 1 metadata fields in the Dataset section(s) ('addmeta') 17-Jan-2025: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 17-Jan-2025: updated 57 metadata fields in the Dataset, Project, Site, Status, Study, Supplement section(s) ('addmeta') 28-Jan-2026: manually edited data set metadata ('ui_editmetadata') 28-Jan-2026: 24 rows added at the bottom of the data set from '' ('datamerge') 28-Jan-2026: updated 58 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement section(s) ('addmeta') 28-Jan-2026: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 28-Jan-2026: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 28-Jan-2026: updated 1 metadata fields in the Dataset section(s) ('addmeta') 28-Jan-2026: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 28-Jan-2026: updated 57 metadata fields in the Dataset, Project, Site, Status, Study, Supplement section(s) ('addmeta') 29-Jan-2026: added column 'Location' at position 7 ('addcol') 29-Jan-2026: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 29-Jan-2026: 93 values in 'Location' were updated with new values ('update_data'): changed record 1 from 'SCSA_CB1' to 'SCSA_CB11', changed record 2 from 'SCSA_CB1' to 'SCSA_CB11', changed record 3 from 'SCSA_CB2' to 'SCSA_CB12', changed record 4 from 'SCSA_CB3' to 'SCSA_CB13', changed record 5 from 'SCSA_CB4' to 'SCSA_CB14', changed record 6 from 'SCSA_CB4' to 'SCSA_CB14', changed record 7 from 'SCSA_CB5' to 'SCSA_CB15', changed record 8 from 'SCSA_CB6' to 'SCSA_CB16', changed record 9 from 'SCSA_CB7' to 'SCSA_CB17', changed record 10 from 'SCSA_CB8' to 'SCSA_CB18', changed record 27 from 'SCSA_CB1' to 'SCSA_CB11', changed record 28 from 'SCSA_CB2' to 'SCSA_CB12', changed record 29 from 'SCSA_CB3' to 'SCSA_CB13', changed record 30 from 'SCSA_CB4' to 'SCSA_CB14', changed record 31 from 'SCSA_CB4' to 'SCSA_CB14', changed record 32 from 'SCSA_CB5' to 'SCSA_CB15', changed record 33 from 'SCSA_CB6' to 'SCSA_CB16', changed record 34 from 'SCSA_CB7' to 'SCSA_CB17', changed record 35 from 'SCSA_CB8' to 'SCSA_CB18', changed record 52 from 'SCSA_CB11' to 'SCSA_CB21', changed record 53 from 'SCSA_CB2' to 'SCSA_CB12', changed record 54 from 'SCSA_CB3' to 'SCSA_CB13', changed record 55 from 'SCSA_CB4' to 'SCSA_CB14', changed record 56 from 'SCSA_CB4' to 'SCSA_CB14', changed record 57 from 'SCSA_CB5' to 'SCSA_CB15', changed record 58 from 'SCSA_CB5' to 'SCSA_CB15', changed record 59 from 'SCSA_CB6' to 'SCSA_CB16', changed record 60 from 'SCSA_CB7' to 'SCSA_CB17', changed record 61 from 'SCSA_CB8' to 'SCSA_CB18', changed record 78 from 'SCSA_CB21' to 'SCSA_CB31', changed record 79 from 'SCSA_CB2' to 'SCSA_CB12', changed record 80 from 'SCSA_CB3' to 'SCSA_CB13', changed record 81 from 'SCSA_CB14' to 'SCSA_CB24', changed record 82 from 'SCSA_CB14' to 'SCSA_CB24', changed record 83 from 'SCSA_CB5' to 'SCSA_CB15', changed record 84 from 'SCSA_CB5' to 'SCSA_CB15', changed record 85 from 'SCSA_CB6' to 'SCSA_CB16', changed record 86 from 'SCSA_CB6' to 'SCSA_CB16', changed record 87 from 'SCSA_CB17' to 'SCSA_CB27', changed record 88 from 'SCSA_CB18' to 'SCSA_CB28', changed record 105 from 'SCSA_CB31' to 'SCSA_CB41', changed record 106 from 'SCSA_CB2' to 'SCSA_CB12', changed record 107 from 'SCSA_CB3' to 'SCSA_CB13', changed record 108 from 'SCSA_CB24' to 'SCSA_CB34', changed record 109 from 'SCSA_CB15' to 'SCSA_CB25', changed record 110 from 'SCSA_CB16' to 'SCSA_CB26', changed record 111 from 'SCSA_CB17' to 'SCSA_CB27', changed record 112 from 'SCSA_CB18' to 'SCSA_CB28', changed record 123 from 'ZSC2_CB13' to 'ZSC2_CB23', changed record 129 from 'SCSA_CB31' to 'SCSA_CB41', changed record 130 from 'SCSA_CB12' to 'SCSA_CB22', changed record 131 from 'SCSA_CB13' to 'SCSA_CB23', changed record 132 from 'SCSA_CB24' to 'SCSA_CB34', changed record 133 from 'SCSA_CB15' to 'SCSA_CB25', changed record 134 from 'SCSA_CB26' to 'SCSA_CB36', changed record 135 from 'SCSA_CB17' to 'SCSA_CB27', changed record 136 from 'SCSA_CB18' to 'SCSA_CB28', changed record 147 from 'ZSC2_CB13' to 'ZSC2_CB23', changed record 153 from 'SCSA_CB41' to 'SCSA_CB51', changed record 154 from 'SCSA_CB12' to 'SCSA_CB22', changed record 155 from 'SCSA_CB13' to 'SCSA_CB23', changed record 156 from 'SCSA_CB24' to 'SCSA_CB34', changed record 157 from 'SCSA_CB25' to 'SCSA_CB35', changed record 158 from 'SCSA_CB26' to 'SCSA_CB36', changed record 159 from 'SCSA_CB27' to 'SCSA_CB37', changed record 160 from 'SCSA_CB18' to 'SCSA_CB28', changed record 171 from 'ZSC2_CB13' to 'ZSC2_CB23', changed record 177 from 'SCSA_CB41' to 'SCSA_CB51', changed record 178 from 'SCSA_CB12' to 'SCSA_CB22', changed record 179 from 'SCSA_CB13' to 'SCSA_CB23', changed record 180 from 'SCSA_CB24' to 'SCSA_CB34', changed record 181 from 'SCSA_CB25' to 'SCSA_CB35', changed record 182 from 'SCSA_CB26' to 'SCSA_CB36', changed record 183 from 'SCSA_CB27' to 'SCSA_CB37', changed record 184 from 'SCSA_CB28' to 'SCSA_CB38', changed record 195 from 'ZSC2_CB13' to 'ZSC2_CB23', changed record 203 from 'SCSA_CB23' to 'SCSA_CB33', changed record 205 from 'SCSA_CB35' to 'SCSA_CB45', changed record 219 from 'ZSC2_CB13' to 'ZSC2_CB23', changed record 229 from 'SCSA_CB35' to 'SCSA_CB45', changed record 243 from 'ZSC2_CB13' to 'ZSC2_CB23', changed record 268 from 'ZSC2_CB13' to 'ZSC2_CB23', changed record 276 from 'SCSA_CB43' to 'SCSA_CB53', changed record 292 from 'ZSC2_CB13' to 'ZSC2_CB23', changed record 298 from 'SCSA_CB61' to 'SCSA_CB71', changed record 299 from 'SCSA_CB42' to 'SCSA_CB52', changed record 300 from 'SCSA_CB53' to 'SCSA_CB63', changed record 301 from 'SCSA_CB44' to 'SCSA_CB54', changed record 302 from 'SCSA_CB55' to 'SCSA_CB65', changed record 303 from 'SCSA_CB46' to 'SCSA_CB56', changed record 304 from 'SCSA_CB47' to 'SCSA_CB57', changed record 305 from 'SCSA_CB48' to 'SCSA_CB58', changed record 316 from 'ZSC2_CB13' to 'ZSC2_CB23' 29-Jan-2026: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 29-Jan-2026: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 29-Jan-2026: 75 values in 'Location' were updated with new values ('update_data'): changed record 1 from 'SCSA_CB11' to 'SCSA_CB21', changed record 2 from 'SCSA_CB11' to 'SCSA_CB21', changed record 3 from 'SCSA_CB12' to 'SCSA_CB22', changed record 4 from 'SCSA_CB13' to 'SCSA_CB23', changed record 5 from 'SCSA_CB14' to 'SCSA_CB24', changed record 6 from 'SCSA_CB14' to 'SCSA_CB24', changed record 7 from 'SCSA_CB15' to 'SCSA_CB25', changed record 8 from 'SCSA_CB16' to 'SCSA_CB26', changed record 9 from 'SCSA_CB17' to 'SCSA_CB27', changed record 10 from 'SCSA_CB18' to 'SCSA_CB28', changed record 27 from 'SCSA_CB11' to 'SCSA_CB21', changed record 28 from 'SCSA_CB12' to 'SCSA_CB22', changed record 29 from 'SCSA_CB13' to 'SCSA_CB23', changed record 30 from 'SCSA_CB14' to 'SCSA_CB24', changed record 31 from 'SCSA_CB14' to 'SCSA_CB24', changed record 32 from 'SCSA_CB15' to 'SCSA_CB25', changed record 33 from 'SCSA_CB16' to 'SCSA_CB26', changed record 34 from 'SCSA_CB17' to 'SCSA_CB27', changed record 35 from 'SCSA_CB18' to 'SCSA_CB28', changed record 52 from 'SCSA_CB21' to 'SCSA_CB31', changed record 53 from 'SCSA_CB12' to 'SCSA_CB22', changed record 54 from 'SCSA_CB13' to 'SCSA_CB23', changed record 55 from 'SCSA_CB14' to 'SCSA_CB24', changed record 56 from 'SCSA_CB14' to 'SCSA_CB24', changed record 57 from 'SCSA_CB15' to 'SCSA_CB25', changed record 58 from 'SCSA_CB15' to 'SCSA_CB25', changed record 59 from 'SCSA_CB16' to 'SCSA_CB26', changed record 60 from 'SCSA_CB17' to 'SCSA_CB27', changed record 61 from 'SCSA_CB18' to 'SCSA_CB28', changed record 78 from 'SCSA_CB31' to 'SCSA_CB41', changed record 79 from 'SCSA_CB12' to 'SCSA_CB22', changed record 80 from 'SCSA_CB13' to 'SCSA_CB23', changed record 81 from 'SCSA_CB24' to 'SCSA_CB34', changed record 82 from 'SCSA_CB24' to 'SCSA_CB34', changed record 83 from 'SCSA_CB15' to 'SCSA_CB25', changed record 84 from 'SCSA_CB15' to 'SCSA_CB25', changed record 85 from 'SCSA_CB16' to 'SCSA_CB26', changed record 86 from 'SCSA_CB16' to 'SCSA_CB26', changed record 87 from 'SCSA_CB27' to 'SCSA_CB37', changed record 88 from 'SCSA_CB28' to 'SCSA_CB38', changed record 105 from 'SCSA_CB41' to 'SCSA_CB51', changed record 106 from 'SCSA_CB12' to 'SCSA_CB22', changed record 107 from 'SCSA_CB13' to 'SCSA_CB23', changed record 109 from 'SCSA_CB25' to 'SCSA_CB35', changed record 110 from 'SCSA_CB26' to 'SCSA_CB36', changed record 111 from 'SCSA_CB27' to 'SCSA_CB37', changed record 112 from 'SCSA_CB28' to 'SCSA_CB38', changed record 123 from 'ZSC2_CB23' to 'ZSC2_CB33', changed record 129 from 'SCSA_CB41' to 'SCSA_CB51', changed record 131 from 'SCSA_CB23' to 'SCSA_CB33', changed record 133 from 'SCSA_CB25' to 'SCSA_CB35', changed record 135 from 'SCSA_CB27' to 'SCSA_CB37', changed record 136 from 'SCSA_CB28' to 'SCSA_CB38', changed record 147 from 'ZSC2_CB23' to 'ZSC2_CB33', changed record 155 from 'SCSA_CB23' to 'SCSA_CB33', changed record 157 from 'SCSA_CB35' to 'SCSA_CB45', changed record 160 from 'SCSA_CB28' to 'SCSA_CB38', changed record 171 from 'ZSC2_CB23' to 'ZSC2_CB33', changed record 179 from 'SCSA_CB23' to 'SCSA_CB33', changed record 181 from 'SCSA_CB35' to 'SCSA_CB45', changed record 195 from 'ZSC2_CB23' to 'ZSC2_CB33', changed record 219 from 'ZSC2_CB23' to 'ZSC2_CB33', changed record 243 from 'ZSC2_CB23' to 'ZSC2_CB33', changed record 268 from 'ZSC2_CB23' to 'ZSC2_CB33', changed record 276 from 'SCSA_CB53' to 'SCSA_CB63', changed record 292 from 'ZSC2_CB23' to 'ZSC2_CB33', changed record 298 from 'SCSA_CB71' to 'SCSA_CB81', changed record 299 from 'SCSA_CB52' to 'SCSA_CB62', changed record 300 from 'SCSA_CB63' to 'SCSA_CB73', changed record 301 from 'SCSA_CB54' to 'SCSA_CB64', changed record 302 from 'SCSA_CB65' to 'SCSA_CB75', changed record 303 from 'SCSA_CB56' to 'SCSA_CB66', changed record 304 from 'SCSA_CB57' to 'SCSA_CB67', changed record 305 from 'SCSA_CB58' to 'SCSA_CB68', changed record 316 from 'ZSC2_CB23' to 'ZSC2_CB33' 29-Jan-2026: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 29-Jan-2026: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 29-Jan-2026: 53 values in 'Location' were updated with new values ('update_data'): changed record 1 from 'SCSA_CB21' to 'SCSA_CB31', changed record 2 from 'SCSA_CB21' to 'SCSA_CB31', changed record 4 from 'SCSA_CB23' to 'SCSA_CB33', changed record 5 from 'SCSA_CB24' to 'SCSA_CB34', changed record 6 from 'SCSA_CB24' to 'SCSA_CB34', changed record 7 from 'SCSA_CB25' to 'SCSA_CB35', changed record 8 from 'SCSA_CB26' to 'SCSA_CB36', changed record 9 from 'SCSA_CB27' to 'SCSA_CB37', changed record 10 from 'SCSA_CB28' to 'SCSA_CB38', changed record 27 from 'SCSA_CB21' to 'SCSA_CB31', changed record 29 from 'SCSA_CB23' to 'SCSA_CB33', changed record 30 from 'SCSA_CB24' to 'SCSA_CB34', changed record 31 from 'SCSA_CB24' to 'SCSA_CB34', changed record 32 from 'SCSA_CB25' to 'SCSA_CB35', changed record 33 from 'SCSA_CB26' to 'SCSA_CB36', changed record 34 from 'SCSA_CB27' to 'SCSA_CB37', changed record 35 from 'SCSA_CB28' to 'SCSA_CB38', changed record 52 from 'SCSA_CB31' to 'SCSA_CB41', changed record 54 from 'SCSA_CB23' to 'SCSA_CB33', changed record 55 from 'SCSA_CB24' to 'SCSA_CB34', changed record 56 from 'SCSA_CB24' to 'SCSA_CB34', changed record 57 from 'SCSA_CB25' to 'SCSA_CB35', changed record 58 from 'SCSA_CB25' to 'SCSA_CB35', changed record 59 from 'SCSA_CB26' to 'SCSA_CB36', changed record 60 from 'SCSA_CB27' to 'SCSA_CB37', changed record 61 from 'SCSA_CB28' to 'SCSA_CB38', changed record 78 from 'SCSA_CB41' to 'SCSA_CB51', changed record 80 from 'SCSA_CB23' to 'SCSA_CB33', changed record 83 from 'SCSA_CB25' to 'SCSA_CB35', changed record 84 from 'SCSA_CB25' to 'SCSA_CB35', changed record 85 from 'SCSA_CB26' to 'SCSA_CB36', changed record 86 from 'SCSA_CB26' to 'SCSA_CB36', changed record 107 from 'SCSA_CB23' to 'SCSA_CB33', changed record 109 from 'SCSA_CB35' to 'SCSA_CB45', changed record 123 from 'ZSC2_CB33' to 'ZSC2_CB43', changed record 133 from 'SCSA_CB35' to 'SCSA_CB45', changed record 147 from 'ZSC2_CB33' to 'ZSC2_CB43', changed record 171 from 'ZSC2_CB33' to 'ZSC2_CB43', changed record 195 from 'ZSC2_CB33' to 'ZSC2_CB43', changed record 219 from 'ZSC2_CB33' to 'ZSC2_CB43', changed record 243 from 'ZSC2_CB33' to 'ZSC2_CB43', changed record 268 from 'ZSC2_CB33' to 'ZSC2_CB43', changed record 276 from 'SCSA_CB63' to 'SCSA_CB73', changed record 292 from 'ZSC2_CB33' to 'ZSC2_CB43', changed record 298 from 'SCSA_CB81' to 'SCSA_CB91', changed record 299 from 'SCSA_CB62' to 'SCSA_CB72', changed record 300 from 'SCSA_CB73' to 'SCSA_CB83', changed record 301 from 'SCSA_CB64' to 'SCSA_CB74', changed record 302 from 'SCSA_CB75' to 'SCSA_CB85', changed record 303 from 'SCSA_CB66' to 'SCSA_CB76', changed record 304 from 'SCSA_CB67' to 'SCSA_CB77', changed record 305 from 'SCSA_CB68' to 'SCSA_CB78', changed record 316 from 'ZSC2_CB33' to 'ZSC2_CB43' 29-Jan-2026: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 29-Jan-2026: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 29-Jan-2026: 28 values in 'Location' were updated with new values ('update_data'): changed record 1 from 'SCSA_CB31' to 'SCSA_CB41', changed record 2 from 'SCSA_CB31' to 'SCSA_CB41', changed record 7 from 'SCSA_CB35' to 'SCSA_CB45', changed record 27 from 'SCSA_CB31' to 'SCSA_CB41', changed record 32 from 'SCSA_CB35' to 'SCSA_CB45', changed record 52 from 'SCSA_CB41' to 'SCSA_CB51', changed record 57 from 'SCSA_CB35' to 'SCSA_CB45', changed record 58 from 'SCSA_CB35' to 'SCSA_CB45', changed record 83 from 'SCSA_CB35' to 'SCSA_CB45', changed record 84 from 'SCSA_CB35' to 'SCSA_CB45', changed record 123 from 'ZSC2_CB43' to 'ZSC2_CB53', changed record 147 from 'ZSC2_CB43' to 'ZSC2_CB53', changed record 171 from 'ZSC2_CB43' to 'ZSC2_CB53', changed record 195 from 'ZSC2_CB43' to 'ZSC2_CB53', changed record 219 from 'ZSC2_CB43' to 'ZSC2_CB53', changed record 243 from 'ZSC2_CB43' to 'ZSC2_CB53', changed record 268 from 'ZSC2_CB43' to 'ZSC2_CB53', changed record 276 from 'SCSA_CB73' to 'SCSA_CB83', changed record 292 from 'ZSC2_CB43' to 'ZSC2_CB53', changed record 298 from 'SCSA_CB91' to 'SCSA_CB101', changed record 299 from 'SCSA_CB72' to 'SCSA_CB82', changed record 300 from 'SCSA_CB83' to 'SCSA_CB93', changed record 301 from 'SCSA_CB74' to 'SCSA_CB84', changed record 302 from 'SCSA_CB85' to 'SCSA_CB95', changed record 303 from 'SCSA_CB76' to 'SCSA_CB86', changed record 304 from 'SCSA_CB77' to 'SCSA_CB87', changed record 305 from 'SCSA_CB78' to 'SCSA_CB88', changed record 316 from 'ZSC2_CB43' to 'ZSC2_CB53' 29-Jan-2026: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 29-Jan-2026: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 29-Jan-2026: 21 values in 'Location' were updated with new values ('update_data'): changed record 1 from 'SCSA_CB41' to 'SCSA_CB51', changed record 2 from 'SCSA_CB41' to 'SCSA_CB51', changed record 27 from 'SCSA_CB41' to 'SCSA_CB51', changed record 123 from 'ZSC2_CB53' to 'ZSC2_CB63', changed record 147 from 'ZSC2_CB53' to 'ZSC2_CB63', changed record 171 from 'ZSC2_CB53' to 'ZSC2_CB63', changed record 195 from 'ZSC2_CB53' to 'ZSC2_CB63', changed record 219 from 'ZSC2_CB53' to 'ZSC2_CB63', changed record 243 from 'ZSC2_CB53' to 'ZSC2_CB63', changed record 268 from 'ZSC2_CB53' to 'ZSC2_CB63', changed record 276 from 'SCSA_CB83' to 'SCSA_CB93', changed record 292 from 'ZSC2_CB53' to 'ZSC2_CB63', changed record 298 from 'SCSA_CB101' to 'SCSA_CB111', changed record 299 from 'SCSA_CB82' to 'SCSA_CB92', changed record 300 from 'SCSA_CB93' to 'SCSA_CB103', changed record 301 from 'SCSA_CB84' to 'SCSA_CB94', changed record 302 from 'SCSA_CB95' to 'SCSA_CB105', changed record 303 from 'SCSA_CB86' to 'SCSA_CB96', changed record 304 from 'SCSA_CB87' to 'SCSA_CB97', changed record 305 from 'SCSA_CB88' to 'SCSA_CB98', changed record 316 from 'ZSC2_CB53' to 'ZSC2_CB63' 29-Jan-2026: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 29-Jan-2026: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 29-Jan-2026: 18 values in 'Location' were updated with new values ('update_data'): changed record 123 from 'ZSC2_CB63' to 'ZSC2_CB73', changed record 147 from 'ZSC2_CB63' to 'ZSC2_CB73', changed record 171 from 'ZSC2_CB63' to 'ZSC2_CB73', changed record 195 from 'ZSC2_CB63' to 'ZSC2_CB73', changed record 219 from 'ZSC2_CB63' to 'ZSC2_CB73', changed record 243 from 'ZSC2_CB63' to 'ZSC2_CB73', changed record 268 from 'ZSC2_CB63' to 'ZSC2_CB73', changed record 276 from 'SCSA_CB93' to 'SCSA_CB103', changed record 292 from 'ZSC2_CB63' to 'ZSC2_CB73', changed record 298 from 'SCSA_CB111' to 'SCSA_CB121', changed record 299 from 'SCSA_CB92' to 'SCSA_CB102', changed record 300 from 'SCSA_CB103' to 'SCSA_CB113', changed record 301 from 'SCSA_CB94' to 'SCSA_CB104', changed record 302 from 'SCSA_CB105' to 'SCSA_CB115', changed record 303 from 'SCSA_CB96' to 'SCSA_CB106', changed record 304 from 'SCSA_CB97' to 'SCSA_CB107', changed record 305 from 'SCSA_CB98' to 'SCSA_CB108', changed record 316 from 'ZSC2_CB63' to 'ZSC2_CB73' 29-Jan-2026: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 29-Jan-2026: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 29-Jan-2026: 18 values in 'Location' were updated with new values ('update_data'): changed record 123 from 'ZSC2_CB73' to 'ZSC2_CB13', changed record 147 from 'ZSC2_CB73' to 'ZSC2_CB13', changed record 171 from 'ZSC2_CB73' to 'ZSC2_CB13', changed record 195 from 'ZSC2_CB73' to 'ZSC2_CB13', changed record 219 from 'ZSC2_CB73' to 'ZSC2_CB13', changed record 243 from 'ZSC2_CB73' to 'ZSC2_CB13', changed record 268 from 'ZSC2_CB73' to 'ZSC2_CB13', changed record 276 from 'SCSA_CB103' to 'SCSA_CB43', changed record 292 from 'ZSC2_CB73' to 'ZSC2_CB13', changed record 298 from 'SCSA_CB121' to 'SCSA_CB61', changed record 299 from 'SCSA_CB102' to 'SCSA_CB42', changed record 300 from 'SCSA_CB113' to 'SCSA_CB53', changed record 301 from 'SCSA_CB104' to 'SCSA_CB44', changed record 302 from 'SCSA_CB115' to 'SCSA_CB55', changed record 303 from 'SCSA_CB106' to 'SCSA_CB46', changed record 304 from 'SCSA_CB107' to 'SCSA_CB47', changed record 305 from 'SCSA_CB108' to 'SCSA_CB48', changed record 316 from 'ZSC2_CB73' to 'ZSC2_CB13' 29-Jan-2026: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 29-Jan-2026: 18 values in 'Location' were updated with new values ('update_data'): changed record 123 from 'ZSC2_CB13' to 'ZSC2_CB3', changed record 147 from 'ZSC2_CB13' to 'ZSC2_CB3', changed record 171 from 'ZSC2_CB13' to 'ZSC2_CB3', changed record 195 from 'ZSC2_CB13' to 'ZSC2_CB3', changed record 219 from 'ZSC2_CB13' to 'ZSC2_CB3', changed record 243 from 'ZSC2_CB13' to 'ZSC2_CB3', changed record 268 from 'ZSC2_CB13' to 'ZSC2_CB3', changed record 276 from 'SCSA_CB43' to 'SCSA_CB33', changed record 292 from 'ZSC2_CB13' to 'ZSC2_CB3', changed record 298 from 'SCSA_CB61' to 'SCSA_CB51', changed record 299 from 'SCSA_CB42' to 'SCSA_CB32', changed record 300 from 'SCSA_CB53' to 'SCSA_CB43', changed record 301 from 'SCSA_CB44' to 'SCSA_CB34', changed record 302 from 'SCSA_CB55' to 'SCSA_CB45', changed record 303 from 'SCSA_CB46' to 'SCSA_CB36', changed record 304 from 'SCSA_CB47' to 'SCSA_CB37', changed record 305 from 'SCSA_CB48' to 'SCSA_CB38', changed record 316 from 'ZSC2_CB13' to 'ZSC2_CB3' 29-Jan-2026: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 29-Jan-2026: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 29-Jan-2026: 2 values in 'Location' were updated with new values ('update_data'): changed record 299 from 'SCSA_CB32' to 'SCSA_CB22', changed record 300 from 'SCSA_CB43' to 'SCSA_CB33' 29-Jan-2026: Q/C flagging criteria applied for column(s) Location, 'flags' field updated ('dataflag') 29-Jan-2026: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 29-Jan-2026: added column 'Location_Notes' at position 8 ('addcol') 29-Jan-2026: updated 1 metadata fields in the Data section(s) ('addmeta') 29-Jan-2026: manually added 'E' flags to 93 records in column(s) Location, Latitude and Longitude ('addflags') 29-Jan-2026: locked Q/C flag criteria for columns Location, Longitude and Latitude to prevent automatic evaluation ('flag_locks') 29-Jan-2026: updated 1 metadata fields in the Data section(s) ('addmeta') 29-Jan-2026: 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') 29-Jan-2026: updated 8 metadata fields in the Site section(s) ('addmeta') 29-Jan-2026: updated 1 metadata fields in the Dataset section(s) ('addmeta') 29-Jan-2026: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 29-Jan-2026: updated 57 metadata fields in the Dataset, Project, Site, Status, Study, Supplement section(s) ('addmeta') 29-Jan-2026: flags for columns Location, Longitude and Latitude converted to data columns, flag codes updated in metadata ('flags2cols') 29-Jan-2026: updated 6 metadata fields in the Data section(s) ('addmeta') 29-Jan-2026: updated 15 metadata fields in the Status, Data sections to reflect attribute metadata ('updatecols') 29-Jan-2026: parsed and formatted metadata ('listmeta') B. Variable Information 1. Variable Name: column 1. Day column 2. Month column 3. Year 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. Condition column 15. Observation column 16. Replacement column 17. Notes 2. Variable Definition: column 1. Day of observation column 2. Month of Observation column 3. Year of observation column 4. GCE LTER sampling site column 5. Nominal marsh zone column 6. 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. Condition of permanent plot column 15. Observation of any disturbances in the permanent plot column 16. Plot number of the replacement plot column 17. Notes from the field logs 3. Units of Measurement: column 1. DD column 2. MM column 3. YYYY column 4. none column 5. none column 6. none column 7. none column 8. none column 9. none column 10. degrees column 11. none column 12. degrees column 13. none column 14. none column 15. none column 16. none column 17. none 4. Data Type a. Storage Type: column 1. integer column 2. integer column 3. integer column 4. string column 5. integer column 6. integer column 7. string column 8. string column 9. string column 10. floating-point column 11. string column 12. floating-point column 13. string column 14. string column 15. string column 16. integer column 17. string b. Variable Codes: Site: SCSA = SCSA Altamaha Plant Transition Site - Broughton Island, ZSC1 = ZSC1 Altamaha Plant Transition Site - Champney Island, ZSC2 = ZSC2 Altamaha Plant Transition Site - Butler Island Zone: 1 = creek bank zone, 2 = mid-marsh zone, 3 = additional Juncus zone in high marsh, -1 = old creek bank zone prior to plot relocation Condition: N = Normal, D = Disturbed, L = Lost Observation: IS = Initial Slump, TS = Terminal Slump, SG = Stakes Gone, P = Pigs, S = Snails, W = Wrack, O = Other 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. 3 to 27 column 2. 10 to 10 column 3. 2013 to 2025 column 4. (none) column 5. 1 to 1 column 6. 1 to 61 column 7. (none) column 8. (none) column 9. (none) column 10. -81.4551 to -81.3734 column 11. (none) column 12. 31.323 to 31.3413 column 13. (none) column 14. (none) column 15. (none) column 16. 11 to 61 column 17. (none) d. Missing Value Code: 5. Data Format a. Column Type: column 1. numerical column 2. numerical column 3. numerical column 4. text column 5. numerical column 6. numerical column 7. text column 8. text column 9. text column 10. numerical column 11. text column 12. numerical column 13. text column 14. text column 15. text column 16. numerical column 17. text 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. 0 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 (none) column 5. coded value (discrete) column 6. nominal (discrete) column 7. nominal (none) column 8. coded value (none) column 9. free text (none) column 10. geographic coordinate (continuous) column 11. coded value (none) column 12. geographic coordinate (continuous) column 13. coded value (none) column 14. coded value (none) column 15. coded value (none) column 16. nominal (discrete) column 17. free text (none) 7. Flagging Criteria: column 1. x<1="I";x>31="I";x<1="Q";x>31="Q" column 2. x<1="I";x>12="I";x<10="Q";x>10="Q" column 3. x<2001="Q" column 4. none column 5. x<1="Q";x>1="Q" column 6. none 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. none column 15. none column 16. none column 17. none C. Data Anomalies: V. Supplemental Descriptors A. Data Acquisition 1. Data Forms: 2. Form Location: 3. Data Entry Validation: B. Quality Assurance/Quality Control Procedures: C. Supplemental Materials: D. Computer Programs: E. Archival Practices: F. Publications: not specified G. History of Data Set Usage 1. Data Request History: not specified 2. Data Set Update History: Jan 20, 2022: added data from 2021 sampling Feb 23, 2023: added data from 2022 sampling Feb 20, 2024: added data from 2023 sampling Jan 17, 2025: added data from 2024 sampling Jan 28, 2026: added data from 2025 sampling 3. Review History: none 4. Questions and Comments from Users: none