CONSERVATION BIOLOGYSAN DIEGO-- Population viability analysis (PVA), a favorite approach of conservation biologists for predicting a population's survival, is coming under scrutiny now that its use in critical decisions on endangered species is on the rise. Increasingly, PVAs are being attacked as too simplistic, overly demanding of data, error-prone, and hard to verify. Last month, at the first-ever major conference on the technique, scientists discussed hurdles facing attempts to extend PVA to cover a wider range of species, and how to factor in the behavior of our own species. And one scientist described how he crash-tested PVA models in the lab, a practice that could help ecologists refine the technique.
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Mann et al. (1999) studied this question.
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