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GCE-LTER Data Set Summary
Accession:
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ORG-GCED-1508
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Research Theme:
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Organic Matter/Decomposition (Directed Study)
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Contributors:
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Patricia M. Medeiros, Michael Seidel, Thorsten Dittmar, Barnie Whitman, Mary Ann Moran
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Title:
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Dissolved Organic Matter Composition in Doboy Sound and the Altamaha River near Sapelo Island, Georgia in 2012-2013
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Abstract:
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The composition of dissolved organic matter (DOM) in the Altamaha River estuary and Doboy Sound near Sapelo Island, Georgia, was investigated at the molecular level using ultrahigh-resolution mass spectrometry and stable carbon isotope analyses. DOM samples were collected in November 2012, May 2013, and September 2013 representing different hydrological regimes, including anomalously low-discharge conditions. DOM was also collected from water as it flooded and ebbed from an extensive marsh area at Sapelo Island in May 2013. The untargeted approach used allowed for identifying the DOM molecular signatures associated with different DOM sources in the estuary.
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DOI:
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10.6073/pasta/9237b25ee42da683d665270ab265af97
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Key Words:
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carbon, DOM, estuary, isotope analysis, mass spectrometry, nutrients
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LTER Core Area:
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Organic Matter
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Research Themes:
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Organic Matter/Decomposition |
Study Period:
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18-Nov-2012 to 22-Sep-2013
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Study Sites:
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GCE-DB -- Doboy Sound, Georgia, USA
GCE-AL -- Altamaha River, Georgia, USA
GCE-DP -- Duplin River, Georgia, USA
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Publications:
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Medeiros, P.M., Seidel, M., Dittmar, T., Whitman, W.B. and Moran, M.A. 2015. Drought-induced variability in dissolved organic matter composition in a marsh-dominated estuary. Geophysical Research Letters. 42:6446-6453. (DOI: 10.1002/2015GL064653)
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Downloads:
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Data Spreadsheet: ORG-GCED-1508_DOM (Spreadsheet containing a matrix of FT-ICR Mass Spectrometry-derived DOM composition as relative abundance vs molecular mass in Daltons)
Access: Public (released 15-Aug-2015)
Metadata: XML (Ecological Metadata Language)
Data Formats: Spreadsheet (Excel XML) [11666kb]
Data Table: ORG-GCED-1508_Samples (Sample information for data set ORG-GCED-1508, 32 records)
Access: Public (released 15-Aug-2015)
Metadata: Text (ESA FLED),
XML (Ecological Metadata Language)
Data Formats: Spreadsheet (CSV) [3.69kb], Text File [3.05kb], MATLAB (GCE Toolbox) [105.67kb], MATLAB (Variables) [80.88kb], Text Report [15.16kb]
Column List:(display)
Column |
Name |
Units |
Type |
Description |
1 |
Station |
none |
string |
Sampling station name including sample coding for analysis |
2 |
Date |
YYYY-MM-DD |
string |
Calendar date of sample collection |
3 |
Longitude |
degrees |
floating-point |
Geographic longitude where sample was collected |
4 |
Latitude |
degrees |
floating-point |
Geographic latitude where sample was collected |
5 |
Location |
none |
string |
Location name where sample was collected |
6 |
Tide_Phase |
none |
string |
Nominal tide phase at time of sample collection |
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Statistics:
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Generate script code to retrieve data tables for analysis in: MATLAB, R, SAS, SPSS |
Citation:
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Medeiros, Patricia M. 2018. Dissolved Organic Matter Composition in Doboy Sound and the Altamaha River near Sapelo Island, Georgia in 2012-2013. Georgia Coastal Ecosystems LTER Project, University of Georgia, Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/9237b25ee42da683d665270ab265af97
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