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Science 5 May 2000:
Vol. 288. no. 5467, pp. 785 - 786
DOI: 10.1126/science.288.5467.785a
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News of the Week

ECOLOGY:
Does Biodiversity Help Fend Off Invaders?

Jocelyn Kaiser

Theory suggests that an ecosystem rich in biological diversity should be better able to resist invasions by nonnative species, but contradictory studies have led to a heated debate over whether biodiversity matters at all. A study on page 852 may help bring the two camps together by showing that both arguments can hold true--depending upon whether one looks at microcosms or across an entire ecological community.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)