Species Coextinctions and the Biodiversity Crisis

  title={Species Coextinctions and the Biodiversity Crisis},
  author={Lian Pin Koh and Robert R. Dunn and Navjot S. Sodhi and Robert K. Colwell and Heather C. Proctor and Vincent S Smith},
  pages={1632 - 1634}
To assess the coextinction of species (the loss of a species upon the loss of another), we present a probabilistic model, scaled with empirical data. The model examines the relationship between coextinction levels (proportion of species extinct) of affiliates and their hosts across a wide range of coevolved interspecific systems: pollinating Ficus wasps and Ficus, parasites and their hosts, butterflies and their larval host plants, and ant butterflies and their host ants. Applying a nomographic… 
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among island populations of an endangered species
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Biodiversity loss decreases parasite diversity: theory and patterns
  • K. Lafferty
  • Environmental Science
    Philosophical Transactions of the Royal Society B: Biological Sciences
  • 2012
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Local host-tick coextinction in neotropical forest fragments.
Current Constraints and Future Directions in Estimating Coextinction
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The magnitude of the global co-extinction threat to two herbivorous insect taxa (aphids and scale insects) was estimated by compiling a list of species in these groups that are dependent on globally threatened trees.


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A new model for large scale evolution and extinction in which species are organized into food webs, which is able to reproduce the empirical observations without defining a fitness function or invoking competition between species.
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A comparison at the national scale of population and regional extinctions of birds, butterflies, and vascular plants from Britain in recent decades is presented, strengthening the hypothesis that the natural world is experiencing the sixth major extinction event in its history.
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Nonrandom extinction and the loss of evolutionary history.
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It is shown that approximately 80 percent of the underlying tree of life can survive even when approximately 95 percent of species are lost, and that algorithms that maximize the amount of evolutionary history preserved are not much better than choosing the survivors at random.
Biodiversity: Extinction by numbers
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