Literaturdatenbank
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Hunt, S. D., Guzy, J. C., Price, S. J., Halstead, B. J., Eskew, E. A., & Dorcas, M. E. (2013). Responses of riparian reptile communities to damming and urbanization. Biological Conservation, 157, 277–284.
Added by: Admin (06 Jan 2014 18:22:52 UTC) |
| Resource type: Journal Article DOI: http://dx.doi.org/10.1016/j.biocon.2012.08.035 BibTeX citation key: Hunt2013 View all bibliographic details  |
Categories: General Keywords: Apalone spinifera, Chelydra serpentina, Chelydridae, Chrysemys picta, Echsen - saurians, Emydidae, Habitat - habitat, Kinosternidae, Kinosternon subrubrum, Nordamerika - North America, Pseudemys concinna, Schildkröten - turtles + tortoises, Schlangen - snakes, Sternotherus odoratus, Terrapene carolina, Trachemys scripta, Trionychidae Creators: Dorcas, Eskew, Guzy, Halstead, Hunt, Price Collection: Biological Conservation |
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| Abstract |
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Apalone spinifera Trionychidae Chelydra serpentina Chrysemys picta Kinosternon subrubrum Pseudemys concinna Sternotherus odoratus Terrapene carolina Trachemys scripta Various anthropogenic pressures, including habitat loss, threaten reptile populations worldwide. Riparian zones are critical habitat for many reptile species, but these habitats are also frequently modified by anthropogenic activities. Our study investigated the effects of two riparian habitat modifications – damming and urbanization – on overall and species-specific reptile occupancy patterns. We used timeconstrained search techniques to compile encounter histories for 28 reptile species at 21 different sites along the Broad and Pacolet Rivers of South Carolina. Using a hierarchical Bayesian analysis, we modeled reptile occupancy responses to a site’s distance upstream from dam, distance downstream from dam, and percent urban land use. The mean occupancy response by the reptile community indicated that reptile occupancy and species richness were maximized when sites were farther upstream from dams. Species-specific occupancy estimates showed a similar trend of lower occupancy immediately upstream from dams. Although the mean occupancy response of the reptile community was positively related to distance downstream from dams, the occupancy response to distance downstream varied among species. Percent urban land use had little effect on the occupancy response of the reptile community or individual species. Our results indicate that the conditions of impoundments and subsequent degradation of the riparian zones upstream from dams may not provide suitable habitat for a number of reptile species.
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