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Science 21 July 2000:
Vol. 289. no. 5478, pp. 383 - 385
DOI: 10.1126/science.289.5478.383
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News Focus

CONSERVATION BIOLOGY:
When Protecting One Species Hurts Another

Bernice Wuethrich

SWAN VALLEY, MONTANA--Biologists studying whether providing habitat for one wide-ranging species would protect another--the so-called umbrella effect--have found limited overlap between prime grizzly habitat and that of threatened fish, and grizzly conservation programs here may even be hurting the fish. Researchers are now grappling with how best to conserve habitat for multiple species.

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