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GCE-LTER Data Set Summary

Accession: INV-GCEM-1208a2 Research Theme: Aquatic Invertebrate Ecology (Monitoring)
Contributors: Merryl Alber, Steve Pennings, Jacob Shalack, Caroline Reddy, Justin Manley, Hongyu Guo, Kazik Wieski, Aaron Penn
Title: Mollusc population size distribution monitoring: Fall 2011 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh monitoring sites 1-10
Abstract: This data set is the Fall 2011 report of infaunal and epifaunal mollusk species size distributions at the GCE-LTER marsh sites used for population monitoring. Infaunal and epifaunal molluscs were hand-collected from within quadrats of known area from mid-marsh and creekbank zones (n = 4 quadrats per zone) at all sites. The molluscs were returned to the lab, preserved in ethanol, measured and counted (count data is reported separately). Length of each measurable individual was determined using calipers or an ocular micrometer mounted in a stereomicroscope. Species abundance and density data for these collections may be found in the GCE-LTER data set INV-GCEM-1208a1. Numbers of individuals of each species in the abundance data file may not correspond exactly to the numbers of individuals in the size data file because some individuals may not have been measureable.
DOI: 10.6073/pasta/f5516ffba85fc0f6c05a6570a90ea61f
Key Words: Aquatic Invertebrate Monitoring, community composition, creek bank, Detracia, epifauna, fall, Geukensia, Hydrobiidae, infauna, intertidal, length, Littoraria, Littorina, marshes, Melampus, mid-marsh, mollusks, monitoring, permanent plots, Polymesoda, size distribution, species diversity, Succineidae
LTER Core Area: Population Studies
Research Themes: Q2 - Domain Patterns, GCE3 Area2 - Patterns within the Domain, Aquatic Invertebrate Ecology
Study Period: 26-Oct-2011 to 04-Nov-2011
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: Detracia floridana, Geukensia demissa, Hydrobiidae, Ilyanassa obsoleta, Littoraria irrorata, Melampus bidentatus, Polymesoda caroliniana, Succineidae
Data References: INV-GCEM-1208a1 (corresponding mollusc abundance data set)
Project References: Invasive species, Marine invertebrate monitoring
Downloads: Information

Data Table: INV-GCEM-1208a2 (Main data table for data set INV-GCEM-1208a2, 3151 records)

Access: Public (released 22-Aug-2013)

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

Data Formats: Spreadsheet (CSV) [248.19kb],  Text File [226.18kb],  Text Report [320.24kb],  MATLAB (GCE Toolbox) [1712.38kb],  MATLAB (Variables) [1394.19kb]

Column List:(hide)

Column Name Units Type Description
1 Year YYYY integer Calendar year of observation
2 Month M integer Calendar month of observation
3 Day D integer Calendar day of observation
4 Site none integer GCE-LTER sampling site number
5 Zone none integer Marsh zone code (1=Creekbank, 2=Mid-marsh)
6 Plot none integer GCE-LTER permanent plot number
7 Location none string Geographic location code in the GCE Metadata Database for the sampling plot
8 Location_Notes none string Notes on location assignments and geographic accuracy
9 Longitude degrees floating-point Geographic longitude in decimal degrees
10 Latitude degrees floating-point Geographic latitude in decimal degrees
11 Species none string Latinized name of the mollusc species collected
12 Mollusc_Length mm floating-point Length of measurable individuals collected from each plot
13 Condition none integer Binary code to indicate shell condition of the individual specimen.
14 Notes none string Field sampling notes
Statistics: Generate script code to retrieve data tables for analysis in: MATLAB, R, SAS, SPSS
Citation: Alber, Merryl. 2012. Mollusc population size distribution monitoring: Fall 2011 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh monitoring sites 1-10. Georgia Coastal Ecosystems LTER Project, University of Georgia, Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/f5516ffba85fc0f6c05a6570a90ea61f

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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.