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Latest Alan Hastings Stories

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2010-02-10 13:11:42

A new University of California, Davis, study by a top ecological forecaster says it is harder than experts thought to predict when sudden shifts in Earth's natural systems will occur -- a worrisome finding for scientists trying to identify the tipping points that could push climate change into an irreparable global disaster. "Many scientists are looking for the warning signs that herald sudden changes in natural systems, in hopes of forestalling those changes, or improving our preparations...

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2009-09-18 09:02:35

Unknowns may place more species at risk in a changing climate Whether for introduced muskrats in Europe or oak trees in the United Kingdom, zebra mussels in United States lakes or agricultural pests around the world, scientists have tried to find new ways of controlling invasive species by learning how these animals and plants take over in new environs. In a paper published in this week's issue of the journal Science, biologists Brett Melbourne of the University of Colorado and Alan Hastings...

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2008-07-02 16:30:00

Extinction risks may be underestimated by as much as 100-fold, say researchers Extinction risks for natural populations of endangered species are likely being underestimated by as much as 100-fold because of a mathematical "misdiagnosis," according to a new study led by a University of Colorado at Boulder researcher. Assistant Professor Brett Melbourne of CU-Boulder's ecology and evolutionary biology department said current mathematical models used to determine extinction threat, or...