Literaturdatenbank
Literaturdatenbank |
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Pennock, S. (2004). The turtles of nahant marsh: a study of species diversity and abundance. Biology Research, 402.
Added by: Admin (14 Aug 2008 20:38:53 UTC) |
| Resource type: Journal Article BibTeX citation key: Pennock2004 View all bibliographic details  |
Categories: General Keywords: Chelydra, Chelydra serpentina, Chelydridae, Chrysemys, Chrysemys picta, Emydidae, Emydoidea, Emydoidea blandingii, Habitat = habitat, Nordamerika = North America, Schildkröten = turtles + tortoises, Toxikologie = toxicology, Trachemys, Trachemys scripta Creators: Pennock Collection: Biology Research |
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| Abstract |
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This study was undertaken to obtain a species list, determine population estimates, and the species diversity for the turtles of Nahant Marsh, Scott County, Iowa. In 1999, Nahant Marsh was designated an EPA Superfund cleanup site. Environmental contaminates were removed to EPA standards, and Nahant Marsh was considered rehabilitated. In 2003, a mark recapture study was done, and over 300 turtles were captured. Four turtle species were found at Nahant: (87.2%) the Western Painted Turtle (Chrysemys picta), (10.3%) the Common Snapping Turtle (Chelydra serpentina), (2.1%) the Red-Eared Slider (Trachemys scripta), and (0.4%) the Blanding's Turtle (Emydoidea blandingii). The Simpson and Shannon-Wiener indices of diversity each had a value of 0.23, indicating that Nahant's turtle community is not very diverse. Sex ratios were evaluated for the different species of captured turtles and found not to deviate significantly from 1:1. The turtle population of Nahant Marsh is estimated to be about 564 turtles or about 44 turtles per acre.
Added by: Admin |