By Stephen J. Mullin, Richard A. Seigel
Destruction of habitat because of city sprawl, pollutants, and deforestation has brought on inhabitants declines or perhaps extinction of a few of the world's nearly 2,600 snake species. moreover, misconceptions approximately snakes have made them one of the so much persecuted of all animals, although lower than 1 / 4 of all species are venomous and such a lot species are helpful simply because they keep an eye on rodent pests. It has turn into more and more pressing, for that reason, to strengthen manageable conservation innovations for snakes and to enquire their significance as displays of environment future health and signs of habitat sustainability.
In the 1st ebook on snakes written with a spotlight on conservation, editors Stephen J. Mullin and Richard A. Seigel compile major herpetologists to check and synthesize the ecology, conservation, and administration of snakes around the globe. those specialists file on advances in present examine and summarize the first literature, offering an important thoughts and methods in snake ecology and conservation. the typical thread of conservation unites the twelve chapters, every one of which addresses an immense subdiscipline inside of snake ecology. utilized issues comparable to tools and modeling and techniques reminiscent of captive rearing and translocation also are coated. each one bankruptcy offers a necessary framework and shows particular instructions for destiny learn, making this a severe reference for a person attracted to vertebrate conservation normally or for someone imposing conservation and administration regulations touching on snake populations.
Contributors: Omar Attum, Indiana collage Southeast; Steven J. Beaupre, college of Arkansas; Xavier Bonnet, Centre nationwide de l. a. Recherche Scientifique; Frank T. Burbrink, collage of Staten Island-The urban college of latest York; Gordon M. Burghardt, college of Tennessee; Todd A. Castoe, college of Colorado; David Chiszar, college of Colorado; Michael E. Dorcas, Davidson university; Lara E. Douglas, collage of Arkansas; Christopher L. Jenkins, undertaking Orianne, Ltd.; Glenn Johnson, nation college of recent York at Potsdam; Michael Hutchins, The flora and fauna Society; Richard B. King, Northern Illinois collage; Bruce A. Kingsbury, Indiana University-Purdue college fortress Wayne; Thomas Madsen, college of Wollongong; Stephen J. Mullin, jap Illinois college; James B. Murphy, nationwide Zoological Park; Charles R. Peterson, Idaho nation collage; Kent A. previous, Parks Canada; Richard A. Seigel, Towson college; Richard Shine, collage of Sydney; Kevin T. Shoemaker, collage of Environmental technology and Forestry, country college of recent York; Patrick J. Weatherhead, college of Illinois; John D. Willson, college of Georgia
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Sample text
Monitoring population trends over time. Studies that monitor trends in populations over time may be conducted with or without in-depth snapshot studies, and the dichotomy between the two is critical in terms of study design. In short, when monitoring a snake population over time, the researcher must ask, is it necessary to determine the population size (or density)? Alternatively, is it sufficient to determine only if the population is growing, declining, or stable? If the goal is simply to assess stability, and especially if the area of interest is large, then an unbiased index of relative abundance may be sufficient.
Support was Innovative Methods for Studies 37 provided by Duke Power; the Department of Biology at Davidson College; the Savannah River Ecology Laboratory; National Science Foundation grants REU DBI-0139153 and DEB-0347326 to M. E. ; a National Science Foundation Graduate Research Fellowship to J. D. S. Department of Energy, through Financial Assistance Award number DE-FC09-96SR18546 to the University of Georgia Research Foundation. 2 Molecular Phylogeography of Snakes FRANK T. BURBRINK AND TODD A.
2004a). , ecdysis, inactivity, or reproduction) or because they are using habitats or geographic areas that are either outside the sampling area or are not sampled effectively by the capture method. 22 M. E. Dorcas and J. D. Willson a Capture probability High W po hole pu lat ion Ma rk- rec a ptu re Re lat ive pre sen Pre sen ce ce/ ab sen ce N/ A Low b Large nce Spatial scale bse e/a enc s Pre nce da un b a ive lat Re re ptu ca -re ark M Small Low ole on Whulati p po High Level of intensity Fig.
