Literaturdatenbank
Literaturdatenbank |
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Stickel, L. F. (1978). Changes in a box turtle population during three decades. Copeia, 1978, 221–225.
Added by: Admin (25 Aug 2008 21:59:10 UTC) Last edited by: Beate Pfau (07 Feb 2009 09:45:19 UTC) |
| Resource type: Journal Article BibTeX citation key: Stickel1978a View all bibliographic details  |
Categories: General Keywords: Emydidae, Habitat = habitat, Nordamerika = North America, Schildkröten = turtles + tortoises, Terrapene, Terrapene carolina Creators: Stickel Collection: Copeia |
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| Abstract |
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Studies of a Maryland population of marked box-turtles (Terrapene carolina) in 1945, 1955, 1965 and 1975 showed a pronounced decline in population size during the three decades; the greatest change came between 1965 and 1975, when numbers were reduced by half. Proportions of females and of young also declined. Fifteen% of the males and 11% of the females that were more than 20 years old in 1945 still were present in 1975; some probably were more than 80 years old.
Added by: Admin Last edited by: Beate Pfau |