The bog turtle (Glyptemys muhlenbergii) is particularly threatened by habitat changes, yet the potential for habitat management to reverse habitat degradation is not known. Bog turtle demography and habitat use over the period 1983 to 2009 were contrasted at two sites in Massachusetts: one managed for invasive species and successional changes (Site 1) and the other degraded due to flooding from beaver activity (Site 2). The extent of highly suitable habitat at Site 1 remained the same (1997: x¯ = 28% ± 17 CI, n = 25; 2009: x¯ = 29% ± 19, n = 25) whereas Site 2 underwent an increase in the extent of low suitability habitat (1997: x¯ = 5% ± 15, n = 25; 2009: x¯ = 39% ± 16, n = 25). Measurement of population response based on mark-recapture of 90 individual turtles indicated that survival rates and population sizes remained stable before and after habitat interventions at Site 1, whereas population size declined at Site 2 between 1996 (x¯= 38 ± 6.44, n = 46) and 2009 (x¯ = 20 ± 4.32, n = 46). Together these results suggest that habitat management and restoration efforts can improve the status of bog turtle populations albeit over time frames of several decades.
Key Words bog turtle, Glyptemys muhlenbergii, habitat management, habitat use, population response.
|Advisor:||Gibbs, James P.|
|Commitee:||Erb, Lori, Frair, Jacqueline L., Whitlock, Alison L.|
|School:||State University of New York College of Environmental Science and Forestry|
|Department:||Environmental & Forest Biology|
|School Location:||United States -- New York|
|Source:||MAI 50/02M, Masters Abstracts International|
|Subjects:||Wildlife Conservation, Wildlife Management, Ecology|
|Keywords:||Bog turtles, Glyptemys muhlenbergii, Habitat management, Habitat use, Population response|
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