Non-native Species <Emphasis Type="Italic">DO</Emphasis> Threaten the Natural Environment! |
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Authors: | Email author" target="_blank">Daniel?SimberloffEmail author |
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Institution: | (1) Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, TN 37996, USA |
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Abstract: | Sagoff Journal of Agricultural and Environmental Ethics 18 (2005), 215–236] argues, against growing empirical evidence, that major environmental impacts of non-native species are
unproven. However, many such impacts, including extinctions of both island and continental species, have both been demonstrated
and judged by the public to be harmful. Although more public attention has been focused on non-native animals than non-native
plants, the latter more often cause ecosystem-wide impacts. Increased regulation of introduction of non-native species is,
therefore, warranted, and, contra Sagoff’s assertions, invasion biologists have recently developed methods that greatly aid prediction of which introduced
species will harm the environment and thus enable more efficient regulation. The fact that introduced species may increase
local biodiversity in certain instances has not been shown to result in desired changes in ecosystem function. In other locales,
they decrease biodiversity, as they do globally. |
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Keywords: | biodiversity ecosystem function introduced species invasion non-native species prediction risk assessment Sagoff |
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