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GCE-LTER Data Set Summary

Accession: ORG-GCEM-0511c Research Theme: Organic Matter/Decomposition (Monitoring)
Contributors: Robert E. Hodson, Jen Mou, Ed Sheppard
Title: June 2003 surface water dissolved organic carbon concentrations at ten Georgia Coastal Ecosystems LTER sampling sites
Abstract: Water samples were collected by Niskin bottle from just beneath the surface during tidal surveys at ten GCE-LTER sampling sites in June 2003. Water samples were immediately filtered through ashed Whatman GF/F filters and three replicate samples were acidified, refrigerated and transported to the laboratory for analysis. Concentrations of dissolved organic carbon were measured in each sample by high temperature combustion and chromatographic analysis using a Shimadzu TOC analyzer. This study was part of the GCE-LTER hydrographic monitoring program, and will be repeated quarterly.
DOI: 10.6073/pasta/3c86daeb2892a2b0e2905d3b3b517982
Key Words: biogeochemistry, carbon, Cruise Nutrient Sampling, dissolved organic carbon, organic carbon, water column
LTER Core Area: Organic Matter
Research Themes: Organic Matter/Decomposition
Study Period: 11-Mar-2004 to 16-Mar-2004
Study Sites:
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
GCE-SP -- Sapelo River, Georgia, USA
GCE-DB -- Doboy Sound, Georgia, USA
GCE-AL -- Altamaha River, Georgia, USA
GCE-DP -- Duplin River, Georgia, USA
GCE-IC -- Intracoastal Waterway, Georgia, USA
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Data Table: ORG-GCEM-0511c (Main data table for data set ORG-GCEM-0511c, 30 records)

Access: Public (released 10-Nov-2005)

Metadata: Text (ESA FLED), XML (Ecological Metadata Language)

Data Formats: Spreadsheet (CSV) [4.93kb],  Text File [3.42kb],  MATLAB (GCE Toolbox) [185.27kb],  MATLAB (Variables) [164.94kb],  Text Report [34.60kb]

Column List:(hide)

Column Name Units Type Description
1 Cruise none string GCE-LTER research cruise identifier (LTER[MM][YY])
2 Date yyyy-mm-dd string Sample collection date
3 Time hh:mm GMT string Sample collection time (GMT)
4 Latitude decimal degrees floating-point Geographic latitude of sampling location`
5 Longitude decimal degrees floating-point Geographic longitude of sampling location
6 Station none string Nearest nominal GCE-LTER CTD profiling station (1km geo-reference tolerance for station matching)
7 Site none integer Nearest GCE-LTER sampling site number
8 Vessel none string Vessel used to obtain the sample
9 CTD_Cast none string Corresponding CTD cast
10 Depth_Sampled none string Nominal sampling depth
11 Temperature °C floating-point Water temperature at the sampling location
12 Flag_Temperature none string QA/QC flags for Water temperature at the sampling location (flagging criteria, where "x" is Temperature: x<10="Q", x>36="Q", x<-2="I")
13 Salinity PSU floating-point Salinity at the sampling location
14 Flag_Salinity none string QA/QC flags for Salinity at the sampling location (flagging criteria, where "x" is Salinity: x>36="Q", x<0="I")
15 Tide none string Nominal tide stage when the sample was collected
16 Mean_Peak_Area none floating-point Mean chromatogram peak area for 6-10 replicate measurements of non-purgeable organic matter in the TOC analyzer
17 Flag_Mean_Peak_Area none string QA/QC flags for Mean chromatogram peak area for 6-10 replicate measurements of non-purgeable organic matter in the TOC analyzer (flagging criteria, where "x" is Mean_Peak_Area: x<0="I")
18 SD_Peak_Area none floating-point Standard deviation of chromatogram peak area for 6-10 replicate measurements of non-purgeable organic matter in the TOC analyzer
19 Flag_SD_Peak_Area none string QA/QC flags for Standard deviation of chromatogram peak area for 6-10 replicate measurements of non-purgeable organic matter in the TOC analyzer (flagging criteria, where "x" is SD_Peak_Area: x<0="I")
20 Mean_DOC_Conc mg/L floating-point Mean DOC concentration for 6-10 replicate measurements of non-purgeable organic matter in the TOC analyzer
21 Flag_Mean_DOC_Conc none string QA/QC flags for Mean DOC concentration for 6-10 replicate measurements of non-purgeable organic matter in the TOC analyzer (flagging criteria, where "x" is Mean_DOC_Conc: x<1.00="Q", x>40.00="Q", x<0="I")
22 SD_DOC_Conc mg/L floating-point Standard deviation of DOC concentration for 6-10 replicate measurements of non-purgeable organic matter in the TOC analyzer
23 Flag_SD_DOC_Conc none string QA/QC flags for Standard deviation of DOC concentration for 6-10 replicate measurements of non-purgeable organic matter in the TOC analyzer (flagging criteria, where "x" is SD_DOC_Conc: x<0="I")
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Citation: Hodson, Robert E. 2005. June 2003 surface water dissolved organic carbon concentrations at ten Georgia Coastal Ecosystems LTER sampling sites. Georgia Coastal Ecosystems LTER Project, University of Georgia, Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/3c86daeb2892a2b0e2905d3b3b517982

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This material is based upon work supported by the National Science Foundation under grants OCE-9982133, OCE-0620959, OCE-1237140 and OCE-1832178. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.