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Accession: MSH-IRMA-1907 Research Theme: Marsh Ecology (Research Study)
Contributor: Christopher B. Craft
Title: Methane and carbon dioxide flux in a tidal freshwater marsh recovering from three years of experimental seawater additions and following the Hurricane Irma storm surge
Abstract: Methane (CH4) and carbon dioxide (CO2) flux rates were measured in a tidal freshwater marsh using static flux chambers. The experimental field site, SALTEx (Seawater Addition Long-Term Experiment) is part of the Georgia Coastal Ecosystems (GCE) LTER and is located on the Altamaha River, GA. The marsh was experimentally dosed with brackish water additions for 3 years, from 2014 - 2017. There are three treatments groups (Press, Pulse, and Fresh) and two control groups (with and without siding on the plots), each with six replicates. Press treatment plots received brackish water throughout the year, Pulse plots received brackish water in September and October and fresh water the rest of the year, Fresh plots received fresh river water throughout the year. The two control groups, one with siding on the plots and one without, received no water addition manipulations. All dosing ceased in January 2018, at which point we began to study the recovery of the marsh. In this study, the Hurricane Irma Rapid Grant evaluated additional effects of the Hurricane Irma storm surge that occurred in October 2017. Greenhouse gas measurements were taken seasonally beginning in March 2018 and ending in March 2019.
DOI: (not assigned)
Key Words: Altamaha River, carbon cycling, carbon dioxide, carbon fluxes, climate change, fall, fluxes, freshwater, gas flux, Georgia, marshes, methane, press, pulse, recovery, respiration, respiration rates, SALTEx, spring, summer, USA, wetlands, winter
LTER Core Area: Other Site Research
Research Themes: Marsh Ecology
Study Period: 13-Mar-2018 to 14-Mar-2019
Study Sites:
SALTEx -- SALTEx Research Site, Champney Island, Georgia, USA
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Downloads: Information

Data Table: MSH-IRMA-1907_CH4 (CH4 data, 500 records)

Access: Protected (data embargoed pending analysis or publication; GCE Member release on 02-Jul-2020)

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

Data Formats: Spreadsheet (CSV) [55.95kb],  Text File [53.54kb],  MATLAB (GCE Toolbox) [39.96kb],  MATLAB (Variables) [40.65kb],  Text Report [73.72kb]

Column List:(display)


Data Table: MSH-IRMA-1907_CO2 (CO2 data, 4048 records)

Access: Protected (data embargoed pending analysis or publication; GCE Member release on 02-Jul-2020)

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

Data Formats: Spreadsheet (CSV) [341.15kb],  Text File [316.36kb],  MATLAB (GCE Toolbox) [103.45kb],  MATLAB (Variables) [103.61kb],  Text Report [353.28kb]

Column List:(display)

Citation: Craft, Christopher B. 2019. Methane and carbon dioxide flux in a tidal freshwater marsh recovering from three years of experimental seawater additions and following the Hurricane Irma storm surge. Georgia Coastal Ecosystems LTER Project, University of Georgia, Long Term Ecological Research Network. http://gce-lter.marsci.uga.edu/data/MSH-IRMA-1907

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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.