Literaturdatenbank
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Miller, T. A., Meshaka, W. E., & Mack, A. , Long-term demography of the eastern box turtle: what can 47 years of data from a protected site in southwestern pennsylvania tell us? Paper presented at Third Box Turtle Conservation Workshop.
Added by: Admin (14 Aug 2008 20:33:45 UTC) |
| Resource type: Proceedings Article BibTeX citation key: Miller2007 View all bibliographic details  |
Categories: General Keywords: Emydidae, Habitat = habitat, Nordamerika = North America, Schildkröten = turtles + tortoises, Terrapene, Terrapene carolina Creators: Mack, Meshaka, Miller Collection: Third Box Turtle Conservation Workshop |
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| Abstract |
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We are examining a 47-year mark-recapture data set of the eastern box turtle (Terrapene carolina carolina) from Powdermill Nature Reserve, an 890 ha field research station in the Laurel Highlands region of the Allegheny Mountains in Southwestern Pennsylvania. During 1960-2007, 82 turtles were marked of which 44% were recaptured at least once. Six percent of all new captures were juveniles (<100mm CL), 49% males (141 ± 10.8 mm CL), and 54% were females (136.7 ± 9.1 CL). Females were nearly three times more likely to be recaptured than males. Turtles have been observed from late April to early October. However, 97% of observations were from mid-May to mid-September. Nesting mainly occurs during the month of June. The oldest male turtle first captured as an adult and subsequently recaptured was at least 65 years old, while the oldest female was at least 59. The maximum number of years between encounters for a single individual was 37 years. We are also exploring temporal changes in population size and structure within the context of successional changes and the implications for future land management decisions.
Added by: Admin |