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Naturalized Reptiles and Amphibians of the World
This book describes how the various alien reptiles and amphibians now living in the wild throughout the world were first introduced, how they subsequently became naturalized, their present distribution and status in those countries to which they were introduced, and their ecological and socio-economic impact on the native biota and local economies. Many species have had a more or less neutral impact, being neither beneficial nor harmful. However, several have had a positive ecological or socio-economic impact, while some such as the cane toad, have had an extremely destructive effect.The criteria for inclusion of a species are that it should have been imported from its natural range to a new country by human agency--either accidentally or deliberately--and that it should currently be established in the wild in self-maintaining and self-perpetuating populations unsupported by and independent of mankind.
Alien Reptiles and Amphibians
Transportation of species to areas outside their native ranges has been a feature of human culture for millennia. During this time such activities have largely been viewed as beneficial or inconsequential. However, it has become increasingly clear that human-caused introductions of alien biota are an ecological disruption whose consequences rival those of better-known insults like chemical pollution, habitat loss, and climate change. Indeed, the irreversible nature of most alien-species int- ductions makes them less prone to correction than many other ecological problems. Current reshuffling of species ranges is so great that the present era has been referred to by some as the “Homogoceneâ...
Conservation Biology of Hawaiian Forest Birds
Hawaii’s forest bird community is the most insular and most endangered in the world and serves as a case study for threatened species globally. Ten have disappeared in the past thirty years, nine are critically endangered, and even common species are currently in decline. Thane K. Pratt, his coeditors, and collaborators, all leaders in their field, describe the research and conservation efforts over the past thirty years to save Hawaii’s forest birds. They also offer the most comprehensive look at the reasons for these extinctions and attempts to overcome them in the future. Among the topics covered in this book are trends in bird populations, environmental and genetic factors limiting population size, avian diseases, predators, and competing alien bird species. Color plates by award-winning local photographer Jack Jeffrey illustrate all living species discussed or described.
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