Structure and composition of a southern Illinois freshwater turtle assemblage

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Abstract

We report on a six-year study (1994-1999) of a diverse turtle assemblage in Gallatin County, IL. Ten species of freshwater turtles representing four families were recorded. Species richness increased as a function of trap hours, with 3000 trap hours required to capture all species. The greatest density and biomass was for Trachemys scripta. Pseudemys concinna ranked second in density, but Chelydra serpentina ranked second highest in biomass. Females comprised the majority of the biomass in emydids, biomass ratios were even in Sternotherus odoratus, and males comprised the majority of the biomass in C. serpentina. Relative abundance did not significantly differ among the six years, although some uncommon species were not captured in all years.

Original languageEnglish (US)
Pages (from-to)173-186
Number of pages14
JournalNortheastern Naturalist
Volume12
Issue number2
DOIs
StatePublished - Jan 1 2005

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turtle
turtles
Chelydra serpentina
biomass
traps
Pseudemys
Trachemys scripta
relative abundance
species richness
species diversity

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

Cite this

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title = "Structure and composition of a southern Illinois freshwater turtle assemblage",
abstract = "We report on a six-year study (1994-1999) of a diverse turtle assemblage in Gallatin County, IL. Ten species of freshwater turtles representing four families were recorded. Species richness increased as a function of trap hours, with 3000 trap hours required to capture all species. The greatest density and biomass was for Trachemys scripta. Pseudemys concinna ranked second in density, but Chelydra serpentina ranked second highest in biomass. Females comprised the majority of the biomass in emydids, biomass ratios were even in Sternotherus odoratus, and males comprised the majority of the biomass in C. serpentina. Relative abundance did not significantly differ among the six years, although some uncommon species were not captured in all years.",
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