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Science 24 January 1997:
Vol. 275. no. 5299, pp. 479 - 480
DOI: 10.1126/science.275.5299.479
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Research News

Ellen McGarrahan

After a long decline, the threatened bay checkerspot butterfly has disappeared from Stanford University's Jasper Ridge preserve. While this local extinction isn't yet a certainty, it has raised entomological eyebrows: Paul Ehrlich and others at Stanford chose to watch the population die off, saying more could be learned from watching it disappear than from intervening to try to save it. Their decision highlights a dilemma that many conservation biologists face--when should scientists studying a shrinking population intervene to try to save it?

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Climate change hastens population extinctions.
J. F. McLaughlin, J. J. Hellmann, C. L. Boggs, and P. R. Ehrlich (2002)
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Do Habitat Conservation Plans Protect Endangered Species?.
F. Shilling (1997)
Science 276, 1662-1663
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Climate change hastens population extinctions.
J. F. McLaughlin, J. J. Hellmann, C. L. Boggs, and P. R. Ehrlich (2002)
PNAS 99, 6070-6074
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Science. ISSN 0036-8075 (print), 1095-9203 (online)