Literaturdatenbank
Literaturdatenbank |
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Williams, E. C., & Parker, W. S. (1987). A long-term study of a box turtle (terrapene carolina) population at allee memorial woods, indiana, with emphasis on survivorship. Herpetologica, 43, 328–335.
Added by: Admin (24 Aug 2008 17:40:18 UTC) |
| Resource type: Journal Article BibTeX citation key: Williams1987 View all bibliographic details  |
Categories: General Keywords: Emydidae, Habitat = habitat, Nordamerika = North America, Schildkröten = turtles + tortoises, Terrapene, Terrapene carolina Creators: Parker, Williams Collection: Herpetologica |
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| Abstract |
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A woodland population of box turtles, Terrapene carolina was studied at 180 acre (72.9 ha) Allee Memorial Woods, Indiana, from 1958-1984. The bulk of the population was marked from 1958-1960 and intensive sampling was conducted in five other subsequent years (1964, 1965, 1967, 1970, 1983). Survival to 20 yr or more after first marking as adults averaged 18.1% in older males, 36.0% in growing males, 15.6% in older females, and 13.8% in growing females. Among 136 turtles marked in 1958, 11.4% of the males and 10.5% of the females survived at least 25 more years. Sex ratios generally favored males, but seldom significantly. Population density was 4.4-5.7/ha in the 1960's, but density and total population size appeared to have declined substantially by 1983.
Added by: Admin |