Alien Reptiles and Amphibians: a Scientific Compendium and by Fred Kraus

By Fred Kraus

The conservation probability posed by way of invasive alien species has develop into well-recognized during the last 20 years, whilst the matter maintains to extend swiftly in scope. learn and administration realization to this factor has, although, been taxonomically biased towards teams having huge, visible affects, and the invasive power of different organisms with sophisticated or cryptic affects continues to be mostly unassessed. Alien reptiles and amphibians, even though offering a number of the better-known examples of serious invasion affects, have by no means been scientifically assessed as a bunch for his or her power invasiveness. This e-book examines the capacity in which alien reptiles and amphibians are transported via people; surveys their ecological, evolutionary, financial, and well-being affects; experiences the administration responses taken opposed to them; and summarizes the quick study and administration efforts had to mitigate the risk posed by way of those organisms. It additionally presents a finished database of herpetofaunal introductions around the world and a bibliography of helping literature; the database can be supplied on CD-ROM as a way to facilitate use of the information by means of researchers. the aim of the e-book is to summarize our present knowing of herpetofaunal invasiveness and stimulate extra administration and learn actions had to lessen the affects of those species.

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Additional resources for Alien Reptiles and Amphibians: a Scientific Compendium and Analysis (Invading Nature - Springer Series in Invasion Ecology)

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14). Given that reasoning, it might be wondered that an accidental-transport pathway such as the nursery trade could result in similarly high success rates. But several factors likely contribute to the high rate of successful establishment for this pathway. First, the pathway involves the wholesale transfer of favorable habitat for the transported animals, greatly increasing their chances of surviving the move. Second, it may be that, on average, greater numbers of animals are involved in nursery shipments than in other forms of cargo because such goods are inhabited by several species of reptiles and amphibians prior to processing for shipment elsewhere.

9301 Fig. 18 Cumulative growth in reptile and amphibian introductions via the cargo pathway, 1890–1999. 1 years, respectively, for that same period). This accounts for the late 20th century primacy of cargo-mediated over “intentional” introductions. Another way to more simply summarize recent changes in pathway importance is provided by looking at how the numbers of introductions/year have changed in Geographic Variation 43 Fig. 19 Contrasting introduction rates between the period 1850–1979 (solid bars) vs.

3). However, this total is heavily influenced by the widespread introduction of the common pet turtle Trachemys scripta. If this species is removed from the analysis, then numbers of turtle introductions are more in line with those for other taxa (Fig. 4). In either event, rates of successful establishment differ among taxa (Figs. 5), with lizards having the highest rate, followed by frogs, salamanders, and snakes. Turtles and crocodilians have very poor overall rates of establishment. If relative establishment success of turtles is calculated excluding T.

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