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Complexity Digest 2004.46 - 04
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15-Nov-2004

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Realistic Species Losses Disproportionately Reduce Grassland Resistance,
Science
 









Excerpts: Consequences of progressive biodiversity declines depend on the
functional roles of individual species and the order in which species are lost.
Most studies of the biodiversity-ecosystem functioning relation tackle only the
first of these factors. We used observed variation in grassland diversity to
design an experimental test of how realistic species losses affect invasion
resistance. Because entire plant functional groups disappeared faster than
expected by chance, resistance declined dramatically with progressive species
losses. Realistic biodiversity losses, even of rare species, can thus affect
ecosystem processes far more than indicated by randomized-loss experiments.
Source: Realistic Species Losses Disproportionately Reduce Grassland Resistance[
http://www.sciencemag.org/cgi/content/full/306/5699/1175 ], Erika S. Zavaleta,
Kristin B. Hulvey, Science : 1175-1177, 04/11/12

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