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GCE-LTER Data Set Summary
Accession:
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INV-GCEM-1101a2
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Research Theme:
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Aquatic Invertebrate Ecology (Monitoring)
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Contributors:
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Merryl Alber, Steve Pennings, Jacob Shalack, Nick Scoville, Kristen Anstead, Hongyu Guo, Jennifer Blake-Mahmud
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Title:
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Mollusc population size distribution monitoring: Fall 2010 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh monitoring sites 1-10
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Abstract:
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This data set is the Fall 2010 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-1101a1. 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.
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DOI:
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10.6073/pasta/a9cc341a7faed6f046fcce2b7fd0d600
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Key Words:
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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
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LTER Core Area:
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Population Studies
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Research Themes:
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GCE2 Q2 - Domain Patterns, GCE3 Area2 - Patterns within the Domain, Aquatic Invertebrate Ecology |
Study Period:
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18-Oct-2010 to 21-Oct-2010
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Study Sites:
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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
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Species References:
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Detracia floridana,
Geukensia demissa,
Hydrobiidae,
Ilyanassa obsoleta,
Littoraria irrorata,
Melampus bidentatus,
Polymesoda caroliniana,
Succineidae |
Data References:
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INV-GCEM-1101a1 (corresponding mollusc abundance data set)
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Project References:
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Invasive species, Marine invertebrate monitoring |
Downloads:
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Data Table: INV-GCEM-1101a2 (Main data table for data set INV-GCEM-1101a2, 2923 records)
Access: Public (released 31-Jan-2012)
Metadata: Text (ESA FLED),
XML (Ecological Metadata Language)
Data Formats: Spreadsheet (CSV) [251.52kb], Text File [214.31kb], MATLAB (GCE Toolbox) [1439.33kb], MATLAB (Variables) [1136.95kb], Text Report [309.57kb]
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 |
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 |
Flag_Mollusc_Length |
none |
string |
QA/QC flags for Length of measurable individuals collected from each plot (flagging criteria, where "x" is Mollusc_Length: x<0="I", x<0.9="Q", x>118.4="Q") |
17 |
Condition |
none |
integer |
Binary code to indicate shell condition of the individual specimen. |
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Statistics:
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Generate script code to retrieve data tables for analysis in: MATLAB, R, SAS, SPSS |
Citation:
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Alber, Merryl. 2011. Mollusc population size distribution monitoring: Fall 2010 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/a9cc341a7faed6f046fcce2b7fd0d600
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