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GCE-LTER Data Set Summary

Accession: PLT-IRMA-2002a Research Theme: Plant Ecology (Research Study)
Contributor: Steven C. Pennings
Title: Quarterly disturbance observations to three GCE LTER permanent monitoring plots (7,8,9) and three Altamaha River plant transition sites (SCSA,ZSC1,ZSC2) following hurricane Irma from October 2017 through October 2018.
Abstract: To access the effect of hurricane Irma on the GCE domain, yearly monitoring of species and size distribution of plants at three GCE LTER sampling sites (7, 8, 9) and three Altamaha plant transition sites (SCSA, ZSC1, ZSC2) was expanded to quarterly sampling between October 2017 and October 2018. We established permanent vegetation monitoring plots in creekbank and midmarsh at GCE sites 1-10 in 2000. A dedicated Juncus zone was later added at sites 10 and 9. We established creekbank permanent vegetation monitoring plots in three plant transition zones along the Altamaha River in 2012. When we recorded plant sizes, we also noted any disturbance to the plots. Plots were scored as normal (no visible disturbance), disturbed by wrack (wrack present in plots and stems dead or broken), disturbed by snails (>100 Littoraria per square meter and plant biomass low), disturbed by pigs (animal trail through the plot, this mostly happened at site 8 mid-marsh), initial slump (plot at the creekbank sliding into the creek based on movement of pvc poles or formation of a crevasse), and terminal slump (plot had slid far enough down that vegetation had drowned). Plots that experienced terminal slump or could not be found for any reason were scored as lost. Lost plots were replaced with a new plot in the same general area with the plot code incremented by 10. For example if plot 3 was lost, it was replaced by 13, and then in turn by 23. October data are duplicates of data from the annual fall monitoring data sets but are included here for completeness.
DOI: 10.6073/pasta/0fe63274ab2bfbd93f93963bbe1a5949
Key Words: disturbance, geomorphology, Juncus, Littoraria, Spartina, wrack, Zizaniopsis
LTER Core Area: Disturbance Patterns
Research Themes: Plant Ecology
Study Period: 01-Oct-2017 to 31-Oct-2018
Study Sites:
GCE7 -- Carrs Island, Georgia, USA
GCE8 -- Alligator Creek, Georgia, USA
GCE9 -- Rockdedundy Island, Georgia, USA
SCSA -- SCSA Altamaha Plant Transition Site, Georgia, USA
ZSC1 -- ZSC1 Altamaha Plant Transition Site, Georgia, USA
ZSC2 -- ZSC2 Altamaha Plant Transition Site, Georgia, USA
» Download Geographic Coverage: Google Earth
Species References: Juncus roemerianus, Littoraria irrorata, Zizaniopsis miliacea
Data References: PLT-IRMA-2002 (Quarterly plant monitoring survey)
Downloads: Information

Data Table: PLT-IRMA-2002a (Main data table for data set PLT-IRMA-2002a, 398 records)

Access: Public (released 06-Feb-2020)

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

Data Formats: Spreadsheet (CSV) [14.56kb],  Text File [11.95kb],  MATLAB (GCE Toolbox) [30.51kb],  MATLAB (Variables) [42.34kb],  Text Report [53.06kb]

Column List:(hide)

Column Name Units Type Description
1 Year YYYY integer Year of observation
2 Month M integer Month of Observation
3 Day D integer Day of observation
4 Site none string GCE LTER sampling site
5 Zone none integer Nominal marsh zone
6 Plot none integer Permanent plot number
7 Condition none string Condition of permanent plot
8 Observation none string Observation of any disturbances in the permanent plot
9 Replacement none integer Plot number of the replacement plot
10 Notes none string Notes from the field logs
Statistics: Generate script code to retrieve data tables for analysis in: MATLAB, R, SAS, SPSS
Citation: Pennings, Steven C. 2020. Quarterly disturbance observations to three GCE LTER permanent monitoring plots (7,8,9) and three Altamaha River plant transition sites (SCSA,ZSC1,ZSC2) following hurricane Irma from October 2017 through October 2018. Georgia Coastal Ecosystems LTER Project, University of Georgia, Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/0fe63274ab2bfbd93f93963bbe1a5949

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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.