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   [Title & authors_________]

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   . 2011 Jan;14(1):75-9.
   doi: 10.1111/j.1461-0248.2010.01558.x. Epub 2010 Nov 30.

Stage structure alters how complexity affects stability of ecological networks

   [39]V H W Rudolf^ [40] 1 , [41]Kevin D Lafferty
   Affiliations (BUTTON) Expand

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     * ^1 Department of Ecology and Evolutionary Biology, Rice University, Houston,
       TX, USA. volker.rudolf@rice.edu

     * PMID: 21114747
     * DOI: [42]10.1111/j.1461-0248.2010.01558.x

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Stage structure alters how complexity affects stability of ecological networks

   V H W Rudolf et al. Ecol Lett. 2011 Jan.
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   . 2011 Jan;14(1):75-9.
   doi: 10.1111/j.1461-0248.2010.01558.x. Epub 2010 Nov 30.

Authors

   [46]V H W Rudolf^ [47] 1 , [48]Kevin D Lafferty

Affiliation

     * ^1 Department of Ecology and Evolutionary Biology, Rice University, Houston,
       TX, USA. volker.rudolf@rice.edu

     * PMID: 21114747
     * DOI: [49]10.1111/j.1461-0248.2010.01558.x

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Abstract

   Resolving how complexity affects stability of natural communities is of key
   importance for predicting the consequences of biodiversity loss. Central to
   previous stability analysis has been the assumption that the resources of a
   consumer are substitutable. However, during their development, most species
   change diets; for instance, adults often use different resources than larvae or
   juveniles. Here, we show that such ontogenetic niche shifts are common in real
   ecological networks and that consideration of these shifts can alter which
   species are predicted to be at risk of extinction. Furthermore, niche shifts
   reduce and can even reverse the otherwise stabilizing effect of complexity. This
   pattern arises because species with several specialized life stages appear to be
   generalists at the species level but act as sequential specialists that are
   hypersensitive to resource loss. These results suggest that natural communities
   are more vulnerable to biodiversity loss than indicated by previous analyses.

   © 2010 Blackwell Publishing Ltd/CNRS.

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