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GCE-LTER Data Set Summary

Accession: PLT-GCET-1703 Research Theme: Plant Ecology (Graduate Thesis Study)
Contributors: Fan Li, Steve Pennings
Title: Mesocosm experiment on fresh marsh plant community responses to salinity pulses in 2014 and 2015
Abstract: We established mesocosm communities using seven freshwater species (Zizaniopsis miliacea, Pontederia cordata, Persicaria hydropiperoides, Peltandra virginica, Ludwigia peploides, Sagittaria lancifolia and Eleocharis palustris) collected in the same freshwater marsh (31°20'16"N, 81°27'52"W) between Apr 19th and Apr 22nd, 2014, and the sediments were collected from a freshwater pond (31°23'54"N, 81°16'47"W) on Sapelo Island, GA at the same time. Our experimental unit was a plastic round swimming pool (h = 18 cm, r = 122 cm) filled to the top with homogenized sediments. Each unit consisted of 2 individuals of Zizaniopsis, Pontederia, Peltandra and Sagittaria, 5 - 8 Persicaria and Ludwigia separately. Eleocharis was mixed up with other species, so there were uneven numbers in each unit. From May 22 to August 19, 2014, the mesocosm communities were treated with three salinity levels (3, 5, and 10 psu: practical salinity units) and five exposure durations (5, 10, 15, 20 and 30 days per month), relative to a freshwater control (n=3 per treatment combination). Except for 30 days treatment which equals saline press treatment, plants were watered with daily freshwater after treated with saline water for 5, 10, 15 and 20 days. Different salinities were achieved by mixing tap water with sea water. We simulated tides during the treatment, by watering the plants every morning and then pumping out the excess water through a 6-in (15 cm) slotted well (constructed of PVC pipe) in the afternoon. From August 20, 2014 to June 30, 2015, all mesocosm communities were flushed with fresh tap water to recover.
DOI: 10.6073/pasta/c48f9dffc45b8595378eb45382dbc2e3
Key Words: communities, Persicaria, Pontederia, salinity, Zizaniopsis
LTER Core Area: Populations, Primary Production
Research Themes: Plant Ecology, Botany
Study Period: 22-May-2014 to 30-Jun-2015
Study Sites:
Sapelo -- Sapelo Island, Sapelo Island, Georgia
» Download Geographic Coverage: Google Earth, ESRI Shapefile (polygons)
Species References: Eleocharis palustris, Ludwigia peploides, Peltandra virginica, Persicaria hydropiperoides, Pontederia cordata, Sagittaria lancifolia, Zizaniopsis miliacea
Downloads: Information

Data Table: PLT-GCET-1703_Biomass (Plant biomass measurements, 576 records)

Access: Public (released 01-Mar-2017)

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

Data Files: Spreadsheet (CSV) [13.91kb],  Text File [12.41kb],  Text Report [28.42kb],  MATLAB (GCE Toolbox) [148.64kb],  MATLAB (Variables) [120.70kb]

Column List:(display)


Data Table: PLT-GCET-1703_Cover (Percent cover of plant species, 1152 records)

Access: Public (released 01-Mar-2017)

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

Data Files: Spreadsheet (CSV) [36.61kb],  Text File [33.96kb],  Text Report [53.47kb],  MATLAB (GCE Toolbox) [284.88kb],  MATLAB (Variables) [255.70kb]

Column List:(display)


Data Table: PLT-GCET-1703_Height (Individual stem heights, 3006 records)

Access: Public (released 01-Mar-2017)

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

Data Files: Spreadsheet (CSV) [137.25kb],  Text File [131.40kb],  Text Report [154.97kb],  MATLAB (GCE Toolbox) [640.25kb],  MATLAB (Variables) [619.38kb]

Column List:(display)


Data Table: PLT-GCET-1703_Porewater (Porewater phosphate and ammonium concentrations, 96 records)

Access: Public (released 01-Mar-2017)

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

Data Files: Spreadsheet (CSV) [3.27kb],  Text File [2.87kb],  Text Report [17.43kb],  MATLAB (GCE Toolbox) [110.16kb],  MATLAB (Variables) [82.30kb]

Column List:(display)


Data Table: PLT-GCET-1703_SpeciesRichness (Number of species present, 96 records)

Access: Public (released 01-Mar-2017)

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

Data Files: Spreadsheet (CSV) [2.32kb],  Text File [1.93kb],  Text Report [16.21kb],  MATLAB (GCE Toolbox) [107.30kb],  MATLAB (Variables) [78.87kb]

Column List:(display)

Statistics: Generate script code to retrieve data tables for analysis in: MATLAB, R, SAS, SPSS
Citation: Li, Fan. 2017. Mesocosm experiment on fresh marsh plant community responses to salinity pulses in 2014 and 2015. Georgia Coastal Ecosystems LTER Project, University of Georgia, Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/c48f9dffc45b8595378eb45382dbc2e3

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This material is based upon work supported by the National Science Foundation under grants OCE-9982133, OCE-0620959 and OCE-1237140. 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.