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January American Naturalist highlights
Date:1/4/2008

Science Advisor of the UK and President of the Royal Society, Sugihara became a managing director of a major bank for several years. Returning to academia and ecology, I realized that even great ecologists were working with time series only a few tens of points long, Sugihara said. To apply data-hungry techniques to short time series, Hsieh et al. take data from several species collected simultaneously over a few years and stitch them together. A few test manipulations need to be applied; but when done properly, the technique is able to forecast with 15-20 points instead of 1,000. Youre doing significantly better than chance within four years, said Anderson.

But does it work for real world ecological problems" Using 40-year time series from 23 California fish species, Hsieh et al. showed that though they were <10% predictable alone, they become >60% predictable with the new procedure, combined with others from the same habitat. When you consider that were predicting the change, not just raw abundance, this accuracy becomes very exciting, Anderson said.


"What makes a host profitable" parasites balance host nutritive resources against immunity"
Pierre Bize (Glasgow University), Caroline Jeanneret (University of Lausanne), Aurlie Klopfenstein (University of Lausanne), and Alexandre Roulin (University of Lausanne)

Is host immunity enough to explain parasite success" Scientists based at the Universities of Glasgow, Scotland, and Lausanne, Switzerland, have shown that parasites balance host nutritive resources against immunity. Pierre Bize, Caroline Jeanneret, Aurlie Klopfenstein, and Alexandre Roulin conducted research in Switzerland in a free-living colonial bird whose nestlings are heavily infested by blood sucking ectoparasites. They observed that ectoparasites achieved highest survival on nestlings in intermediate condition. By manipulating nestling food resources and cutaneous immune responses, they then demonst
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Contact: Rudy Faust
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