Literaturdatenbank
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Ryan, T. J., Conner, C. A., & Peterman, B. , Spatial ecology of turtle populations within an urban landscape: implications for conservation and habitat management. Paper presented at Turtle Survival Alliance 2006 Annual Meeting.
Added by: Admin (13 Dec 2008 22:23:54 UTC) |
| Resource type: Proceedings Article BibTeX citation key: Ryan2006 View all bibliographic details  |
Categories: General Keywords: Chelydra, Chelydra serpentina, Chelydridae, Emydidae, Graptemys, Graptemys geographica, Habitat = habitat, Nordamerika = North America, Schildkröten = turtles + tortoises, Trachemys, Trachemys scripta Creators: Conner, Peterman, Ryan Collection: Turtle Survival Alliance 2006 Annual Meeting |
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| Abstract |
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Our study focuses on the spatial ecology and seasonal habitat use of three aquatic turtles living in a man-made canal within a highly urbanized region of Indianapolis, IN, USA in order to understand the manner in which upland habitat use by humans shapes the activity, movement, and habitat selection of these species. We used radio telemetry to follow Graptemys geographica (common map turtle, 15 female), Trachemys scripta (red-eared slider, 10 male and 10 female), and Chelydra serpentina (snapping turtles, 12 male and 12 female). During the active season (between May-September) of 2002, we located 33 G. geographica and T. scripta individuals more than 900 times; during the 2003 field season we recorded more than 1700 locations of individuals of the three species. We determined total range of activity, mean movement, and daily movement for each individual. We also analyzed turtle locations relative to upland habitat types (commercial, residential, river, road, woodlot, and open) surrounding the canal. We found that all three species spend a disproportionate amount of time in woodland and commercial habitats and avoided the road-associated portions of the canal. We also located G. geographica and T. scripta individuals during winter 2003 and the C. serpentina in the winter of 2004, and determined that an even greater reliance on woodland-bordered portions of the canal for hibernation. Our results indicate that turtle habitat selection is influenced by human activities; sound conservation and management of turtle populations in urban habitats will require the incorporation of spatial ecology and habitat use data.
Added by: Admin |