Non-native Species DO Threaten the Natural Environment!
Cite this article as: Simberloff, D. J Agric Environ Ethics (2005) 18: 595. doi:10.1007/s10806-005-2851-0 Abstract
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. Keywords biodiversity ecosystem function introduced species invasion non-native species prediction risk assessment Sagoff References BirdLife International 2000Threatened Birds of the World Lynx Edicions Barcelona Google Scholar Blossey, B., Skinner, L. C., Taylor, J. 2001 “Impact and Management of Purple Loosestrife ( Lythrum salicaria) in North America” Biodiversity and Conservation 10 1787 1807 CrossRef Google Scholar Burdick, A. 2005Out of Eden. An Odyssey of Ecological Invasion Farrar, Straus and Giroux New York Google Scholar Clavero, M., García-Berthou, E. 2005 “Invasive Species are a Leading Cause of Animal Extinctions” Trends in Ecology and Evolution 20 110 CrossRef Google Scholar Cox, G. W. 1999Alien Species in North America and Hawaii Impacts on Natural Ecosystems Island Press Washington, DC Google Scholar Cronon, W. 1996Uncommon Ground Norton New York Google Scholar
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