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GCE-LTER Data Set Summary

Accession: PLT-GCES-1609 Research Theme: Plant Ecology (Synthesis)
Contributors: Steven C. Pennings, Wade Sheldon, Shanze Li
Title: Long-term Plant Biomass Monitoring Data from the Georgia Coastal Ecosystems LTER Project on Sapelo Island, Georgia
Abstract: The Georgia Coastal Ecosystems LTER program (GCE) monitors plant biomass annually with the goal of testing the hypothesis that end-of-year biomass varies as a function of 1) freshwater discharge from the Altamaha River (especially in low-marsh plots), 2) local rainfall (especially in high-marsh plots), and 3) average sea level. In 2000 we created permanent plots at all 10 GCE marsh monitoring sites. Plots were established at creek-bank and mid-marsh sites (8 plots per zone per site). Most sites are dominated by Spartina alterniflora (smooth cordgrass), but zones at some sites are dominated by Juncus roemerianus, Spartina cynosuroides, or Zizaniopsis miliacea. An additional marsh zone (high marsh Juncus) was established at site 10 in 2005 and site 9 in 2012 to increase replication of sites with Juncus. Plants have been non-destructively monitored in October of every year from 2000 to the present, measuring the stem count, height and flowering status of every plant in each plot. Stem clipping samples were also collected adjacent to plots in 2002 and 2007, then measured, dried, weighed and statistically analyzed in order to generate allometric regression relationships between height and mass for estimation of plant biomass in corresponding plots. This data set includes cumulative long-term observations of plant stem count, height and biomass per marsh zone, plot and species at 10 GCE LTER sampling sites from 2000 to 2015, and will be updated annually to include the prior year observations.
DOI: 10.6073/pasta/20f7a203bcf5812c89e560184a93f0f7
Key Words: biomass, flowering, Juncus, Long-term Data, marshes, monitoring, Panicum, permanent plots, plant communities, plant cover, plant ecology, plant growth, Plant Monitoring, plants, primary productivity, Scirpus, shoot height, Signature Data, Spartina, Typha
LTER Core Area: Primary Production
Research Themes: Q2 - Domain Patterns, GCE3 Area2 - Patterns within the Domain, Plant Ecology, Botany
Study Period: 10-Oct-2000 to 24-Oct-2015
Study Sites:
GCE1 -- Eulonia, Georgia, USA
GCE2 -- Four Mile Island, Georgia, USA
GCE3 -- North Sapelo, Sapelo Island, Georgia, USA
GCE4 -- Meridian, Georgia, USA
GCE5 -- Folly River, Georgia, USA
GCE6 -- Dean Creek, Sapelo Island, Georgia, USA
GCE7 -- Carrs Island, Georgia, USA
GCE8 -- Alligator Creek, Georgia, USA
GCE9 -- Rockdedundy Island, Georgia, USA
GCE10 -- Hunt Camp, Sapelo Island, Georgia, USA
» Download Geographic Coverage: Google Earth, ESRI Shapefile (polygons, points)
Species References: Cladium jamaicense, Juncus effusus, Juncus roemerianus, Panicum spp, Scirpus americanus, Scirpus olneyi, Scirpus robustus, Scirpus validus, Spartina alterniflora, Spartina cynosuroides, Typha angustifolia, Zizaniopsis miliacea
Data References:
PLT-GCEM-0211b (2002 allometry data set for biomass calculations), PLT-GCEM-0303a (2000 plant biomass data set), PLT-GCEM-0303b (2001 plant biomass data set), PLT-GCEM-0303c (2002 plant biomass data set), PLT-GCEM-0311b (2003 plant biomass data set), PLT-GCEM-0501b (2004 plant biomass data set), PLT-GCEM-0511b (2005 plant biomass data set), PLT-GCEM-0612b (2006 plant biomass data set), PLT-GCEM-0711 (2007 allometry data set for biomass calculations), PLT-GCEM-0801b (2007 plant biomass data set), PLT-GCEM-0812b (2008 plant biomass data set), PLT-GCEM-1004b (2009 plant biomass data set), PLT-GCEM-1010b (2010 plant biomass data set), PLT-GCEM-1112b (2011 plant biomass data set), PLT-GCEM-1311b (2012 plant biomass data set), PLT-GCEM-1403b (2013 plant biomass data set), PLT-GCEM-1412b (2014 plant biomass data set), PLT-GCEM-1511b (2015 plant biomass data set)
Project References: End of year biomass
Downloads: Information

Data Table: PLT-GCES-1609_Biomass_Stats (Statistical analysis of plant biomass per plot across all species, 2683 records)

Access: Public (released 01-Nov-2016)

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

Data Files: Spreadsheet (CSV) [245.18kb],  Text File [234.61kb],  Text Report [378.86kb],  MATLAB (GCE Toolbox) [1472.06kb],  MATLAB (Variables) [1327.69kb]

Column List:(display)


Data Table: PLT-GCES-1609_Observations (Complete plot-level data set containing all observations from October 2000 to October 2015, 50426 records)

Access: Public (released 01-Nov-2016)

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

Data Files: Spreadsheet (CSV) [8278.29kb],  Text File [7037.60kb],  Text Report [7456.19kb],  MATLAB (GCE Toolbox) [28082.21kb],  MATLAB (Variables) [27187.99kb]

Column List:(display)


Data Table: PLT-GCES-1609_Shoots_Flowering (Statistical analysis of shoot height and flowering status by plot and species, 2946 records)

Access: Public (released 01-Nov-2016)

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

Data Files: Spreadsheet (CSV) [315.09kb],  Text File [284.20kb],  Text Report [432.29kb],  MATLAB (GCE Toolbox) [2371.49kb],  MATLAB (Variables) [1784.85kb]

Column List:(display)

Statistics: Generate script code to retrieve data tables for analysis in: MATLAB, R, SAS, SPSS
Citation: Pennings, Steven C. 2016. Long-term Plant Biomass Monitoring Data from the Georgia Coastal Ecosystems LTER Project on Sapelo Island, Georgia. Georgia Coastal Ecosystems LTER Project, University of Georgia, Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/20f7a203bcf5812c89e560184a93f0f7

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LTER
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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.