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Science 2 May 2008:
Vol. 320. no. 5876, p. 597
DOI: 10.1126/science.320.5876.597a
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News of the Week

ECOLOGY:
Yosemite: Protected but Not Preserved

Virginia Morell

Two researchers have traced the decline of the California black oak in Yosemite National Park through a complex chain of effects that starts with human influence and extends from cougars through mule deer to oaks and primroses.

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