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GCE-LTER Data Set Summary
Accession:
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ORG-GCEL-2212
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Research Theme:
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Organic Matter/Decomposition (Leveraged Study)
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Contributor:
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Amanda C. Spivak
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Title:
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Experimental soil metabolism responses to oxygen availability and carbon pulses
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Abstract:
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Soil metabolism rates were measured in experimental flow-through reactors (FTRs) in order to assess responses to oxygen availability (i.e., redox conditions) and pulsed inputs of bioavailable carbon. The oxygen and carbon manipulations were meant to simulate patchy conditions in the rhizosphere of Spartina alterniflora marshes. The experiment was conducted over 97 days. During the first 84 days, pulses were applied weekly and metabolic responses were measured 1 and 5 days later. After the final carbon pulse, metabolism responses were followed for another 13 days in order to assess starvation responses. We used soils from Airport marsh on Sapelo Island.
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DOI:
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10.6073/pasta/c6adc3e855ed0d3f66626e4de3ed0616
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Key Words:
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carbon cycling, carbon fluxes, decomposition, Marsh Landing, marshes, respiration rates, root decomposition, Spartina alterniflora
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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, Marsh Ecology |
Study Period:
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01-May-2020 to 01-Dec-2020
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Study Sites:
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ML -- Marsh Landing, Sapelo Island, Georgia, USA
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Publications:
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Spivak, A.C., Pinsonneault, A.J., Hintz, C., Brandes, J. and Megonigal, P. 2023. Ephemeral microbial responses to pulses of bioavailable carbon in oxic and anoxic salt marsh soils. Soil Biology and Biochemistry. 185. (DOI: 10.1016/j.soilbio.2023.109157)
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Downloads:
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Data Table: ORG-GCEL-2212_FTR_rate (Concentration change rates, 177 records)
Access: Public (released 17-Dec-2022)
Metadata: Text (ESA FLED),
XML (Ecological Metadata Language)
Data Formats: Spreadsheet (CSV) [12.80kb], Text File [11.34kb], MATLAB (GCE Toolbox) [25.22kb], MATLAB (Variables) [24.46kb], Text Report [29.76kb]
Column List:(display)
Column |
Name |
Units |
Type |
Description |
1 |
Sample |
none |
string |
Sample ID |
2 |
NaN3 |
none |
string |
Did the sample receive NaN3 |
3 |
Treatment |
none |
string |
Experimental treatment - Aerobic = Oxic, Anaerobic = Anoxic |
4 |
Sampling_Date |
YYYY-MM-DD |
string |
Date of sampling |
5 |
Sampling_Day |
days |
integer |
Experimental day number |
6 |
Days_Post_Spike |
days |
integer |
Number of days following DOC spike |
7 |
Salinity |
PSU |
floating-point |
Salinity of sample |
8 |
O2 |
uM/h |
floating-point |
Rate of change of O2 concentration |
9 |
Hplus |
uM/h |
floating-point |
Rate of change of H+ concentration |
10 |
S2 |
uM/h |
floating-point |
Rate of change of S2 concentration |
11 |
DIC |
uM/h |
floating-point |
Rate of change of DIC concentration |
12 |
DOC |
uM/h |
floating-point |
Rate of change of DOC concentration |
Data Table: ORG-GCEL-2212_Soil_CN (Soil Carbon and Nitrogen data, 30 records)
Access: Public (released 17-Dec-2022)
Metadata: Text (ESA FLED),
XML (Ecological Metadata Language)
Data Formats: Spreadsheet (CSV) [2.68kb], Text File [2.03kb], MATLAB (GCE Toolbox) [22.68kb], MATLAB (Variables) [22.23kb], Text Report [19.62kb]
Column List:(display)
Column |
Name |
Units |
Type |
Description |
1 |
Sample |
none |
string |
Sample ID |
2 |
Acid_Hydrolysis |
none |
string |
pre - and post - acid hydrolysis |
3 |
Treatment |
none |
string |
Experimental treatment - Pre= pre-experimental control, Aerobic = Oxic, Anaerobic = Anoxic |
4 |
NaN3 |
none |
string |
Did the sample receive NaN3 |
5 |
Sample_Weight |
mg |
floating-point |
Weight of soil sample |
6 |
TOC |
% |
floating-point |
Total Organic Carbon |
7 |
d13C |
ppt |
floating-point |
delta C 13 |
8 |
TN |
% |
floating-point |
Total Nitrogen |
9 |
d15N |
ppt |
floating-point |
delta N 15 |
10 |
Carbon |
mmol |
floating-point |
Carbon concentration |
11 |
Nitrogen |
mmol |
floating-point |
Nitrogen concentration |
12 |
CN_ratio |
none |
floating-point |
Carbon to Nitrogen ratio |
Data Table: ORG-GCEL-2212_Soil_Fe (Soil Iron data, 27 records)
Access: Public (released 17-Dec-2022)
Metadata: Text (ESA FLED),
XML (Ecological Metadata Language)
Data Formats: Spreadsheet (CSV) [2.16kb], Text File [1.65kb], MATLAB (GCE Toolbox) [21.77kb], MATLAB (Variables) [20.46kb], Text Report [18.06kb]
Column List:(display)
Column |
Name |
Units |
Type |
Description |
1 |
Sample |
none |
string |
SampleID |
2 |
Treatment |
none |
string |
Experimental treatment - Pre= pre-experimental control, Aerobic = Oxic, Anaerobic = Anoxic |
3 |
Extractant |
none |
string |
Extractant solution and concentration |
4 |
Phase |
none |
string |
Iron phase |
5 |
Fe |
ug/g |
floating-point |
Micrograms of Iron per gram of dry soil |
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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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Spivak, Amanda C. 2022. Experimental soil metabolism responses to oxygen availability and carbon pulses. Georgia Coastal Ecosystems LTER Project, University of Georgia, Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/c6adc3e855ed0d3f66626e4de3ed0616
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