Non-native species are key factors in the disappearance of
nearly half the imperiled species in this country, a recent
cover story in Bioscience concludes. "Alien invasion is the
least recognized threat to wildlife today," said EDF ecologist
Dr. David S. Wilcove, lead author of the peer-reviewed article.
http://www.edf.org/pubs/NewsReleases/1998/Jul/b_es.html
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