Literaturdatenbank
Literaturdatenbank |
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Beaudry, F., deMaynadier, P. G., & Hunter, M. L. (2010). Nesting movements and the use of anthropogenic nesting sites by spotted turtles (clemmys guttata) and blanding's turtles (emydoidea blandingii). Herpetological Conservation and Biology, 5(1), 1–8.
Added by: Admin (22 Oct 2010 20:34:58 UTC) |
| Resource type: Journal Article BibTeX citation key: Beaudry2010a View all bibliographic details  |
Categories: General Keywords: Clemmys, Clemmys guttata, Emydidae, Emydoidea, Emydoidea blandingii, Fortpflanzung = reproduction, Habitat = habitat, Nordamerika = North America, Schildkröten = turtles + tortoises Creators: Beaudry, deMaynadier, Hunter Collection: Herpetological Conservation and Biology |
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| Abstract |
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Spotted Turtles (Clemmys guttata) and Blanding’s Turtles (Emydoidea blandingii) complete extensive upland movements to use open nesting sites in otherwise forested areas, exposing themselves to risks such as road mortality and poaching. To better understand the risks faced by females of both species, and to inform potential nest site supplementation, we quantified upland movements associated with nesting, determined the extent to which turtles use nest sites of anthropogenic origin, and estimated the number of years the sites had been available. We radio-tracked 23 adult females of each species to identify nesting sites. Blanding’s Turtles traveled 1006 m during nesting activities, accounting for 30% of the yearly upland distance traveled by breeding females. Anthropogenic locales constituted 84% of the nest sites, and 58% had been available for 5 y or less. Spotted Turtles moved shorter distances during nesting activities, with a median distance of 148 m, corresponding to 21% of the yearly upland distance traveled by gravid females. Of the nest sites used by Spotted Turtles, 64% were anthropogenic, and 29% were recent. The ability to use newly disturbed areas signals that artificial nesting sites can be detected and used rapidly by turtles, and the quality of artificial sites could be managed to enhance nesting success for these at-risk turtle species. The judicious placement of artificial nest sites could modify or reduce upland movements by adult females during the nesting season, a period when the impact of adult loss is particularly damaging to local population viability.
Added by: Admin |