Georgia Coastal Ecosystems LTER Data Set Details

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GCE-LTER Data Set Summary

Accession:

POR-GCED-0210

Research Theme:

Pore-water Chemistry (Directed Study)

Contributors:

Samantha B. Joye, Nat Weston, Bill Porubsky, Matthew Erickson

Title:

Porewater nutrients, dissolved organics, redox species, and gasses in estuarine intertidal sediments at sites on Sapelo Island and near the Satilla River from Fall 2000 through Fall 2002

Abstract:

Seasonal patterns of estuarine creek-bank sediment porewater nutrients, dissolved organics, redox species and gasses were investigated at several sites on Sapelo Island and the Satilla River in coastal Georgia. Porewater ammonium, nitrate+nitrite, phosphate, silica, dissolved organic carbon, nitrogen and phosphorus, reduced iron and manganese, chloride, sulfate, hydrogen sulfide, pH, dissolved inorganic carbon, methane and nitrogen gas were measured at centimeter scale resolution depth profiles with the use of porewater equilibration meters. Several relatively pristine sites on Sapelo Island (Moses Hammock, Dean Creek and Marine Institute), a site slightly impacted by development (White Oak Creek) and a presumably heavily impacted site (Dover Bluff) show different levels and patterns of several porewater constituents.

DOI:

10.6073/pasta/f7920673498cb1019f08fe35083f72eb

Key Words:

ammonium, biogeochemistry, carbon, chloride, gas flux, iron, manganese, methane, nitrate, nitrogen, organic, ph, phosphate, phosphorus, porewater, silica, sulfate, sulfide

LTER Core Area:

Inorganic Matter

Research Themes:

GCE2 Q2 - Domain Patterns, Pore-water Chemistry, General Nutrient Chemistry, Organic Matter/Decomposition

Study Period:

22-Sep-2000 to 02-Aug-2002

Study Sites:

GCE6 -- Dean Creek, Sapelo Island, Georgia, USA
GCE10 -- Hunt Camp, Sapelo Island, Georgia, USA

» Download Geographic Coverage: Google Earth

Project References:

Organic matter mineralization and sulfate reduction, Terminal metabolism

Publications:

Weston, N.B., Porubsky, W.P., Samarkin, V., MacAvoy, S.E., Erickson, M. and Joye, S.B. 2006. Porewater stoichiometry of terminal metabolic products, sulfate, and dissolved organic carbon and nitrogen in estuarine intertidal creek-bank sediments. Biogeochemistry. 77:375-408.

Downloads:

Data Table: POR-GCED-0210 (Main data table for data set POR-GCED-0210, 1153 records)

Access: Public (released 16-Oct-2004)

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

Data Formats: Spreadsheet (CSV) [237.09kb], Text File [207.58kb], MATLAB (GCE Toolbox) [612.53kb], MATLAB (Variables) [495.41kb], Text Report [269.36kb]

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	Longitude	degrees	floating-point	Geographic longitude of sampling location
6	Latitude	degrees	floating-point	Geographic latitude of sampling location
7	Replicate	none	integer	Porewater equilibration meter replicate code
8	Chamber	none	integer	Porewater equilibration chamber number, from top of meter down
9	Depth	cm	floating-point	Depth of porewater equilibration meter chamber, relative to sediment-water interface
10	Flag_Depth	none	string	QA/QC flags for Depth of porewater equilibration meter chamber, relative to sediment-water interface (flagging criteria, where "x" is Depth: x<-20="Q", x>70="Q")
11	pH	pH units	floating-point	pH
12	Flag_pH	none	string	QA/QC flags for pH (flagging criteria, where "x" is pH: x<1="Q", x>14="Q")
13	NH4_Conc	µM	floating-point	Ammonium concentration
14	Flag_NH4_Conc	none	string	QA/QC flags for Ammonium concentration (flagging criteria, where "x" is NH4_Conc: x<0="I", x<0.2="Q")
15	Nox_Conc	µM	floating-point	Nitrate+nitrite concentration
16	Flag_Nox_Conc	none	string	QA/QC flags for Nitrate+nitrite concentration (flagging criteria, where "x" is Nox_Conc: x<0="I", x<0.1="Q")
17	DON_Conc	µM	floating-point	Dissolved organic nitrogen concentration
18	Flag_DON_Conc	none	string	QA/QC flags for Dissolved organic nitrogen concentration (flagging criteria, where "x" is DON_Conc: x<0="I", x<10="Q")
19	PO4_Conc	µM	floating-point	Phosphate concentration
20	Flag_PO4_Conc	none	string	QA/QC flags for Phosphate concentration (flagging criteria, where "x" is PO4_Conc: x<0="I", x<0.1="Q")
21	DOP_Conc	µM	floating-point	Dissolved organic phosphorus concentration
22	Flag_DOP_Conc	none	string	QA/QC flags for Dissolved organic phosphorus concentration (flagging criteria, where "x" is DOP_Conc: x<0="I", x<0.2="Q")
23	Si_Conc	µM	floating-point	Silica concentration
24	Flag_Si_Conc	none	string	QA/QC flags for Silica concentration (flagging criteria, where "x" is Si_Conc: x<0="I", x<0.2="Q")
25	DOC_Conc	µM	floating-point	Dissolved organic carbon concentration
26	Flag_DOC_Conc	none	string	QA/QC flags for Dissolved organic carbon concentration (flagging criteria, where "x" is DOC_Conc: x<0="I", x<10="Q")
27	H2S_Conc	µM	floating-point	Hydrogen sulfide concentration
28	Flag_H2S_Conc	none	string	QA/QC flags for Hydrogen sulfide concentration (flagging criteria, where "x" is H2S_Conc: x<0="I", x<1="Q")
29	Fe_Conc	µM	floating-point	Reduced iron concentration
30	Flag_Fe_Conc	none	string	QA/QC flags for Reduced iron concentration (flagging criteria, where "x" is Fe_Conc: x<0="I", x<0.2="Q")
31	Mn_Conc	µM	floating-point	Reduced manganese concentration
32	Flag_Mn_Conc	none	string	QA/QC flags for Reduced manganese concentration (flagging criteria, where "x" is Mn_Conc: x<0="I", x<0.2="Q")
33	Cl_Conc	mM	floating-point	Chloride concentration
34	Flag_Cl_Conc	none	string	QA/QC flags for Chloride concentration (flagging criteria, where "x" is Cl_Conc: x<0="I", x<0.1="Q")
35	SO4_Conc	mM	floating-point	Sulfate concentration
36	Flag_SO4_Conc	none	string	QA/QC flags for Sulfate concentration (flagging criteria, where "x" is SO4_Conc: x<0="I", x<0.01="Q")
37	Alkalinity	mM	floating-point	Alkalinity
38	Flag_Alkalinity	none	string	QA/QC flags for Alkalinity (flagging criteria, where "x" is Alkalinity: x<0="I", x<0.1="Q")
39	DIC_Calc	µM	floating-point	Dissolved inorganic carbon concentration, calculated from pH and Alkalinity
40	Flag_DIC_Calc	none	string	QA/QC flags for Dissolved inorganic carbon concentration, calculated from pH and Alkalinity (flagging criteria, where "x" is DIC_Calc: x<0="I")
41	DIC_Meas	µM	floating-point	Dissolved inorganic carbon concentration, measured
42	Flag_DIC_Meas	none	string	QA/QC flags for Dissolved inorganic carbon concentration, measured (flagging criteria, where "x" is DIC_Meas: x<0="I", x<5="Q")
43	CH4_Conc	µM	floating-point	Methane concentration
44	Flag_CH4_Conc	none	string	QA/QC flags for Methane concentration (flagging criteria, where "x" is CH4_Conc: x<0="I", x<0.5="Q")
45	Salinity_Interpolated	parts per thousand	floating-point	Salinity, interpolated by depth from chloride
46	Flag_Salinity_Interpolated	none	string	QA/QC flags for Salinity, interpolated by depth from chloride (flagging criteria, where "x" is Salinity_Interpolated: x<0="I")
47	N2_Equilibrium	µM	floating-point	Equilibrium nitrogen gas concentration calculated from interpolated salinity and temperature
48	Flag_N2_Equilibrium	none	string	QA/QC flags for Equilibrium nitrogen gas concentration calculated from interpolated salinity and temperature (flagging criteria, where "x" is N2_Equilibrium: x<0="I", x>1000="I")
49	N2_Conc	µM	floating-point	Measured nitrogen gas concentration
50	Flag_N2_Conc	none	string	QA/QC flags for Measured nitrogen gas concentration (flagging criteria, where "x" is N2_Conc: x<0="I", x>1000="I")
51	N2_Sat	%	floating-point	Percent nitrogen gas saturation
52	Flag_N2_Sat	none	string	QA/QC flags for Percent nitrogen gas saturation (flagging criteria, where "x" is N2_Sat: x<0="I", x>500="I")

Statistics:

Generate script code to retrieve data tables for analysis in: MATLAB, R, SAS, SPSS

Citation:

Joye, Samantha B. 2002. Porewater nutrients, dissolved organics, redox species, and gasses in estuarine intertidal sediments at sites on Sapelo Island and near the Satilla River from Fall 2000 through Fall 2002. Georgia Coastal Ecosystems LTER Project, University of Georgia, Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/f7920673498cb1019f08fe35083f72eb

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