Literaturdatenbank
Literaturdatenbank |
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Bour, R. (2008). Global diversity of turtles (chelonii; reptilia) in freshwater. Hydrobiologia, 595(1), 593–598.
Added by: Admin (14 Aug 2008 20:34:31 UTC) |
| Resource type: Journal Article BibTeX citation key: Bour2008 View all bibliographic details  |
Categories: General Keywords: Chelidae, Emydidae, Geoemydidae, Pelomedusidae, Schildkröten = turtles + tortoises, Systematik = taxonomy, Trionychidae Creators: Bour Collection: Hydrobiologia |
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| Abstract |
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Abstract The turtles are an evolutionary ancient group of tetrapod vertebrates, and their present-day distribution and diversity reflects the long and complex history of the taxon. Today, about 250 of the total of 320 species recognized are freshwater turtles; most of these inhabit tropical and subtropical zones. Diversity hotspots occur in Southeast North America, regarding Emydidae, and in the Indo-Malayan region, mostly Geoemydidae and Trionychidae. Chelidae are predominantly Neotropical and Australasian, while Pelomedusidae are African. The majority of genus- and species-level taxa are regional or even local endemics. A majority of freshwater turtles are threatened in varying degrees, mostly by habitat modification and collection.
Added by: Admin |