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Author: Austin Stanley Rand
Publisher:
ISBN:
Category : Amphibians
Languages : en
Pages : 30
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Book Description
Author: Austin Stanley Rand
Publisher:
ISBN:
Category : Amphibians
Languages : en
Pages : 30
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Book Description
Author: Christopher Lever
Publisher:
ISBN: 9780198507710
Category : Nature
Languages : en
Pages : 342
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Book Description
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.
Author: Gunther Köhler
Publisher: Krieger Publishing Company
ISBN:
Category : Nature
Languages : en
Pages : 256
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Book Description
As presently understood, the herpetofauna of El Salvador consists of 130 species representing 88 genera and 30 families. For each of these species the following information is provided: (1) a partial synonymy, including reference, the current name, and references to the species in El Salvador, (2) the total geographic distribution; (3) ecological distribution in El Salvador; (4) a short description of the morphology; (5) natural history and taxonomic comments; (6) conservation status of evaluated species; and (7) a list of Salvadoran specimens examined and their locality data. Distribution maps and color photographs are provided for each species. Dichotomous keys for the identification of the orders, genera, and species of Salvadoran amphibians (including tadpoles) and reptiles are provided in English and Spanish.
Author: William John Riemer
Publisher:
ISBN:
Category : Reptiles
Languages : en
Pages : 590
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Book Description
Author: Juan R. León
Publisher: DigiCat
ISBN:
Category : Fiction
Languages : en
Pages : 75
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Book Description
DigiCat Publishing presents to you this special edition of "The Systematics of the Frogs of the Hyla Rubra Group in Middle America" by Juan R. León. DigiCat Publishing considers every written word to be a legacy of humankind. Every DigiCat book has been carefully reproduced for republishing in a new modern format. The books are available in print, as well as ebooks. DigiCat hopes you will treat this work with the acknowledgment and passion it deserves as a classic of world literature.
Author: American Society of Ichthyologists and Herpetologists. Herpetological Catalogue Committee
Publisher:
ISBN:
Category : Reptiles
Languages : en
Pages : 384
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Book Description
Author: Fred Kraus
Publisher: Springer Science & Business Media
ISBN: 1402089465
Category : Nature
Languages : en
Pages : 571
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Book Description
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 “Homogocene” in an effort to reflect the unique mag- tude of the changes being made. These alien interlopers often cause considerable ecological and economic d- age where introduced. Species extinctions, food-web disruptions, community alte- tions, ecosystem conversion, changes in nutrient cycling, fisheries collapse, watershed degradation, agricultural loss, building damage, and disease epidemics are among the destructive – and frequently unpredictable – ecological and economic effects that invasive alien species can inflict. The magnitude of these damages c- tinues to grow, with virtually all environments heavily used by humans now do- nated by alien species and many “natural” areas becoming increasingly prone to alien invasion as well. Attention to this problem has increased in the past decade or so, and efforts to prevent or limit further harm are gaining wider scientific and political acceptance.
Author:
Publisher:
ISBN:
Category : Amphibians
Languages : en
Pages : 786
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Book Description
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 344
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Book Description
Author: Van Wallach
Publisher: CRC Press
ISBN: 1482208482
Category : Nature
Languages : en
Pages : 1237
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Book Description
Snakes of the World: A Catalogue of Living and Extinct Species-the first catalogue of its kind-covers all living and fossil snakes described between 1758 and 2012, comprising 3,509 living and 274 extinct species allocated to 539 living and 112 extinct genera. Also included are 54 genera and 302 species that are dubious or invalid, resulting in reco
