Literaturdatenbank
Literaturdatenbank |
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COSEWIC. (2012). Cosewic assessment and status report on the northern map turtle graptemys geographica in canada.
Added by: Sarina Wunderlich (06 Jul 2014 16:10:36 UTC) |
| Resource type: Report/Documentation BibTeX citation key: anon2012.15942 View all bibliographic details  |
Categories: General Keywords: Emydidae, Habitat - habitat, Nordamerika - North America, Schildkröten - turtles + tortoises, Terrapene carolina Creators: Canada, COSEWIC |
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| URLs www.registrelep-sa ... c.ca/default_e.cfm |
| Abstract |
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Assessment Summary – November 2012 Common name Northern Map Turtle Scientific name Graptemys geographica Status Special Concern Reason for designation There have been no quantitative, long-term studies of this species in Canada and, therefore, there is limited evidence of recent declines, range contraction or local extirpation of the species. However, the species’ long-lived life history with delayed age of maturity and the potential threats to its habitat suggest that it is susceptible to population decline. Significant threats include direct mortality from collisions with motor boats and from commercial fisheries bycatch. Loss and degradation of shoreline habitat is another threat because this wary turtle is readily disturbed by human activity and boating, and shoreline developments interfere with the species’ basking and nesting behaviour. Unnaturally high predation of nests by mammalian predators, especially raccoons, is another threat. If not ameliorated, these threats combined with the species’ life history will cause the species to become Threatened in Canada. Occurrence Ontario, Quebec Status history Designated Special Concern in May 2002. Status re-examined and confirmed in November 2012.
Added by: Sarina Wunderlich |