Literaturdatenbank
Literaturdatenbank |
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Brown, W. S. , Work on terrapene coahuila after the t. ornata model of john m. legler (1960) and evidence of habitat loss over a 37-year period (1965–2002) - abstract. Unpublished paper presented at Program and Abstracts of the Tenth Annual Symposium on the Conservation and Biology of Tortoises and Freshwater Turtles.
Added by: Sarina Wunderlich (06 Jul 2014 16:10:33 UTC) |
| Resource type: Conference Paper BibTeX citation key: anon2013.15901 View all bibliographic details  |
Categories: General Keywords: Emydidae, Habitat - habitat, Nordamerika - North America, Schildkröten - turtles + tortoises, Trachemys scripta Creators: Brown Collection: Program and Abstracts of the Tenth Annual Symposium on the Conservation and Biology of Tortoises and Freshwater Turtles |
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| Abstract |
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In 1965, the author conducted a field study of the aquatic Coahuilan Box Turtle, Terrapene coahuila, work that was modeled after the pioneering monographic study of the Ornate Box Turtle, T. ornata, by John M. Legler. The field work in Mexico was conducted while at Arizona State University under W.L. Minckley who had been a graduate colleague of Legler’s at Kansas. On a graduate-student field trip to the Cuatro Cienegas basin with Minckley in December 1964, a study site was selected. Returning for full-time field work in the summer of 1965, T. coahuila were captured and marked in a series of shallow marshes within surrounding Chihuahuan shrub-grassland communities. After a 37-year hiatus (including a valuable year as Legler’s graduate student at the University of Utah before the author abandoned the advanced anapsids in favor of degenerate diapsids), the Mexican field site was revisited in 2002 under the auspices of Dean Hendrickson and his doctoral student, Jennifer Howeth, of the University of Texas. Using the author’s old survey maps and photographs, our field team located the sites of the original marshes. We found that there were no wetland habitats remaining, all marshes having been replaced by dense stands of grasses. With the evident disappearance of the original wetland habitats throughout the study area, the turtles had also disappeared. Our observations make imperative all available steps to protect the remaining wetland habitats of T. coahuila in the Cuatro Cienegas basin.
Added by: Sarina Wunderlich |