Georgia Coastal Ecosystems LTER Data Set Details

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GCE-LTER Data Set Summary

Accession:

INV-GCEM-1707a

Research Theme:

Aquatic Invertebrate Ecology (Monitoring)

Contributors:

Steven C. Pennings, Merryl Alber, Jacob Shalack, Tim Montgomery, Andy Penniman

Title:

Mollusc population size distribution monitoring: Fall 2016 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 2016 report of infaunal and epifaunal mollusc 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-1707. 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/5df6ef1e2c10d73447f51bf6f6f989b1

Key Words:

abundance, Aquatic Invertebrate Monitoring, creek bank, density, Detracia, epifauna, fall, Geukensia, Hydrobiidae, Ilyanassa, infauna, Littoraria, marshes, Melampus, mid-marsh, mollusks, monitoring, Polymesoda, populations, Succineidae, vegetation

LTER Core Area:

Population Studies

Research Themes:

Aquatic Invertebrate Ecology

Study Period:

24-Oct-2016 to 28-Oct-2016

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

Species References:

Detracia floridana, Geukensia demissa, Hydrobiidae, Ilyanassa obsoleta, Littoraria irrorata, Melampus bidentatus, Polymesoda caroliniana, Succineidae

Data References:

INV-GCEM-1707 (Corresponding Mollusc Abundance Data Set)

Downloads:

Data Table: INV-GCEM-1707a (Main data table for data set INV-GCEM-1707a, 2688 records)

Access: Public (released 01-Nov-2017)

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

Data Formats: Spreadsheet (CSV) [267.10kb], Text File [237.59kb], MATLAB (GCE Toolbox) [83.91kb], MATLAB (Variables) [88.85kb], Text Report [338.78kb]

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	Nominal GCE-LTER sampling site
5	Zone	none	integer	Marsh zone code (1=Creekbank, 2=Mid-marsh, 3=High-marsh Juncus zone)
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_Length	mm	floating-point	Length of measurable individuals collected from each plot
16	Condition	none	integer	Binary code to indicate shell condition of the individual specimen
17	Notes	none	string	Field sampling notes

Statistics:

Generate script code to retrieve data tables for analysis in: MATLAB, R, SAS, SPSS

Citation:

Pennings, Steven C. 2017. Mollusc population size distribution monitoring: Fall 2016 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/5df6ef1e2c10d73447f51bf6f6f989b1

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