Georgia Coastal Ecosystems LTER Data Set Details

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GCE-LTER Data Set Summary

Accession:

INV-GCEM-0812a1

GCE Research Theme:

Aquatic Invertebrate Ecology (Monitoring)

Contributors:

Thomas Dale Bishop, Jacob Shalack, Daniel Saucedo, Caitlin Yeager, Hongyu Guo, Huy Vu

Title:

Mollusc population abundance monitoring: Fall 2008 mid-marsh and creekbank infaunal and epifaunal mollusc abundance based on collections from GCE marsh, monitoring sites 1-10

Abstract:

This data set is the Fall 2008 estimate of infaunal and epifaunal mollusc abundance at the GCE-LTER marsh sites used for population monitoring. Species abundance was determined by hand-collecting all the infaunal and epifaunal molluscs from within quadrats of known area in mid-marsh and creekbank zones (n = 4 quadrats per zone) at all sites. The molluscs were returned to the lab, fixed in ethanol, transferred to and preserved in ethanol, counted and measured (size data is reported separately). The counts were converted to number per square meter. Gastropod species are listed first, followed by bivalve species. Size distribution data for these collections may be found in the GCE-LTER data set INV-GCEM-0812a2.

Key Words:

abundance, Aquatic Invertebrate Monitoring, community composition, creek bank, density, Detracia, epifauna, fall, Geukensia, Hydrobiidae, Ilyanassa, infauna, intertidal, Littoraria, Littorina, marshes, Melampus, mid-marsh, mollusks, monitoring, permanent plots, Polymesoda, species diversity

LTER Core Area:

Populations

GCE Themes:

Q2 - Domain Patterns, Aquatic Invertebrate Ecology

Study Period:

25-Oct-2008 to 28-Oct-2008

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

Data References:

INV-GCEM-0812a2

Project References:

Invasive species, Marine invertebrate monitoring

Downloads:

Data Table: INV-GCEM-0812a1 (Main data table for data set INV-GCEM-0812a1, 560 records)

Access: Public (released 17-Dec-2009)

Metadata: Text (ESA FLED), Basic EML, Complete EML

Data Files: Spreadsheet (CSV) [62.62kb], Text File [52.01kb], Text Report [174.20kb], MATLAB (GCE Toolbox) [811.34kb], MATLAB (Variables) [529.05kb], Custom MATLAB, Custom Text

Column List:

Column	Name	Units	Type	Description (show)
1	Year	YYYY	integer	Calendar year of observation
2	Month	MM	integer	Calendar month of observation
3	Day	DD	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	Flag_Location	none	string	QA/QC flags for Geographic location code in the GCE Metadata Database for the sampling plot (flagging criteria, where "x" is Location: manual)
9	Location_Notes	none	string	Notes on location assignments and geographic accuracy
10	Longitude	degrees	floating-point	Geographic longitude in decimal degrees
11	Flag_Longitude	none	string	QA/QC flags for Geographic longitude in decimal degrees (flagging criteria, where "x" is Longitude: x<-180="I", x>180="I", manual)
12	Latitude	degrees	floating-point	Geographic latitude in decimal degrees
13	Flag_Latitude	none	string	QA/QC flags for Geographic latitude in decimal degrees (flagging criteria, where "x" is Latitude: x<-90="I", x>90="I", manual)
14	Species	None	string	Latinized name of the mollusc species collected
15	Mollusc_Count	Count	integer	Number of individuals collected in the specified quadrat
16	Flag_Mollusc_Count	none	string	QA/QC flags for Number of individuals collected in the specified quadrat (flagging criteria, where "x" is Mollusc_Count: x<0="I", x>83="Q")
17	Quadrat_Area	m^2	floating-point	Number of square meters in the quadrat sampled
18	Flag_Quadrat_Area	none	string	QA/QC flags for Number of square meters in the quadrat sampled (flagging criteria, where "x" is Quadrat_Area: x<0.0625="I", x<0.25="Q", x>0.5="Q")
19	Mollusc_Density	Count/m^2	floating-point	Calculated number of individuals per meter squared
20	Flag_Mollusc_Density	none	string	QA/QC flags for Calculated number of individuals per meter squared (flagging criteria, where "x" is Mollusc_Density: x<0="I", x>332="Q")

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