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GCE-LTER Data Set Summary
Accession:
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ALG-GCED-0304a
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Research Theme:
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Algal Productivity (Directed Study)
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Contributors:
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Samantha B. Joye, Rosalynn Lee
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Title:
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Benthic chlorophyll concentrations and gross oxygenic photosynthesis rates in surficial estuarine intertidal sediments at sites on Sapelo Island and near the Satilla River from January, April, June and July 2001
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Abstract:
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Seasonal patterns of estuarine creek-bank and intertidal marsh benthic chlorophyll and gross oxygenic photosynthesis were investigated at several sites on Sapelo Island and the Satilla River in coastal Georgia. Benthic chlorophyll were measured in the bulk surface centimeter depth of sediment. Gross oxygenic photosynthesis rates were integrated over 100 um resolution measurements below the sediment water interface using oxygen microelectrodes. Several relatively pristine sites on Sapelo Island (Moses Hammock, Dean Creek and Marine Institute) and a presumably heavily impacted site (Dover Bluff) show similar levels of chlorophyll concentration and photosynthesis rate across bank and marsh zones with higher photosynthetic biomass and activity in the spring season. Nutrient inputs to these study sites are also suggested as a control on gross oxygenic photosynthesis rates as evidenced by a relationship between photosynthesis rate and land-use.
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DOI:
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10.6073/pasta/5517eb03b9acc7091362e9ad05ecb475
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Key Words:
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benthic, biogeochemistry, chlorophyll, oxygen, sediments
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LTER Core Area:
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Primary Production
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Research Themes:
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Algal Productivity |
Study Period:
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27-Jan-2001 to 20-Jul-2001
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Study Sites:
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GCE6 -- Dean Creek, Sapelo Island, Georgia, USA
GCE10 -- Hunt Camp, Sapelo Island, Georgia, USA
UGAMI -- UGA Marine Institute, Sapelo Island, Georgia, USA
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Downloads:
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Data Table: ALG-GCED-0304a (Main data table for data set ALG-GCED-0304a, 153 records)
Access: Public (released 08-Apr-2005)
Metadata: Text (ESA FLED),
XML (Ecological Metadata Language)
Data Formats: Spreadsheet (CSV) [6.21kb], Text File [5.13kb], MATLAB (GCE Toolbox) [133.43kb], MATLAB (Variables) [103.35kb], Text Report [23.15kb]
Column List:(hide)
Column |
Name |
Units |
Type |
Description |
1 |
Year |
YYYY |
integer |
Year of sample collection |
2 |
Month |
MM |
integer |
Month of sample collection |
3 |
Day |
DD |
integer |
Day of sample collection |
4 |
Station |
none |
string |
Site location code |
5 |
Zone |
none |
integer |
Site location zone |
6 |
Replicate |
none |
string |
Sample replicate code (number = sample number from across the station, letter = replication at a particular number area) |
7 |
ChlorA_Conc |
mg/m^2 |
floating-point |
Surface sediment chlorophyll a concentration |
8 |
PAR |
µE/m^2/s |
floating-point |
Light intensity at which gross oxygenic photosynthesis was measured |
9 |
Gross_Photosynth |
mmol/m^2/h |
floating-point |
Gross oxygenic photosynthesis rate (i.e. oxygen production rate) |
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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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Joye, Samantha B. 2003. Benthic chlorophyll concentrations and gross oxygenic photosynthesis rates in surficial estuarine intertidal sediments at sites on Sapelo Island and near the Satilla River from January, April, June and July 2001. Georgia Coastal Ecosystems LTER Project, University of Georgia, Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/5517eb03b9acc7091362e9ad05ecb475
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