Literaturdatenbank
Literaturdatenbank |
|
 |
|
Riedle, J. D., Shipman, P. A., Fox, S. F., & Leslie, D. M. , Status of the alligator snapping turtle in oklahoma: effects of historical harvest and habitat alteration. Paper presented at Turtle Survival Alliance 2006 Annual Meeting.
Added by: Admin (13 Dec 2008 22:23:53 UTC) |
| Resource type: Proceedings Article BibTeX citation key: Riedle2006a View all bibliographic details  |
Categories: General Keywords: Chelydridae, Habitat = habitat, Macrochelys, Macrochelys temminckii, Nordamerika = North America, Schildkröten = turtles + tortoises Creators: Fox, Leslie, Riedle, Shipman Collection: Turtle Survival Alliance 2006 Annual Meeting |
Views: 6/492
Views index: 8% Popularity index: 2% |
| Abstract |
|
Macrochelys temminckii In 1994, 50 sites were visited in southeastern Missouri to determine current status of the alligator snapping turtle in that region of the state. Thirty-one of the 50 sites were no longer suitable for sampling due to severe habitat alteration; primarily channelization and de-watering for agricultural use. Alligator snapping turtles were captured at 4 of the 19 remaining sites. There was a significant difference in body size between sites, which may be related to historic commercial harvest in adjacent Arkansas. A similar study began in Oklahoma in 1997. Sixty-seven sites were sampled throughout the species range in the eastern 1/3 of Oklahoma. Alligator snapping turtles were captured at only 11 sites, showing a marked decline in the state. As in Missouri, the decline was most likely related to historic harvest and habitat alteration. In Oklahoma, several historic sites have since been channelized, subjected to increased pollution, or converted to coldwater streams through hypolimnetic release of water from reservoirs. At sites where supposedly healthy populations still exist, alligator snapping turtles can reach fairly high densities. Even high- density populations show evidence of past perturbations.
Added by: Admin |