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      Metapopulation dynamics, abundance, and distribution in a microecosystem

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          Abstract

          The experimental fragmentation of landscapes of a natural ecosystem resulted in declines in the abundance and distribution of most species in the multispecies animal community inhabiting the landscapes and the extinction of many species. These declines caused the deterioration of the positive interspecific relation between local population abundance and distributional extent in this community. However, when patches were connected by habitat corridors, an immigration "rescue effect" arrested declines in both abundance and distribution and maintained the observed positive relation between them. These results demonstrate the importance of metapopulation dynamics and landscape connectivity for the persistence of populations in fragmented landscapes.

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          Author and article information

          Journal
          Science
          Science (New York, N.Y.)
          American Association for the Advancement of Science (AAAS)
          1095-9203
          0036-8075
          Sep 25 1998
          : 281
          : 5385
          Affiliations
          [1 ] A. Gonzalez, J. H. Lawton, T. M. Blackburn, National Environment Research Council Centre for Population Biology, Silwood Park, Ascot, Berkshire, SL5 7PY, UK. F. S. Gilbert and I. Evans-Freke, School of Biological Sciences, University Park, Nottingh.
          Article
          10.1126/science.281.5385.2045
          9748167
          d9c0c178-0885-416c-9f0a-21a461e9a827
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