Modelling the optimal conservation of interacting species

Modelling the optimal conservation of interacting species Multi-species conservation priorities often reflect phylogenetic diversity, but other factors, like extinction risks and ecological values of species, are equally important. Ecological values are defined by species interactions, which imply that the optimal in situ protection of phylogenetic diversity is not necessarily obtained through the protection of species. Optimal protection might instead require an increase in the extinction risks, or even an eradication, of species that either compete with, or prey on, other species. We provide a method that can determine the optimal protection of phylogenetic diversity within a set of interacting species. For a set of n interacting species the method requires n 2 extinction probabilities, which can be obtained by population viability analyses. The method can incorporate the effects from all possible species interactions together with the effects from all possible patterns by which the effects from the extinction of interacting species are linked together. The method provides a multi-species viability analysis, and a theoretical example is given to illustrate the optimal conservation of four interacting species showing, among other things, the existence of non-trivial solutions. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Ecological Modelling Elsevier

Modelling the optimal conservation of interacting species

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Publisher
Elsevier
Copyright
Copyright © 2000 Elsevier Science B.V.
ISSN
0304-3800
eISSN
1872-7026
DOI
10.1016/S0304-3800(99)00177-5
Publisher site
See Article on Publisher Site

Abstract

Multi-species conservation priorities often reflect phylogenetic diversity, but other factors, like extinction risks and ecological values of species, are equally important. Ecological values are defined by species interactions, which imply that the optimal in situ protection of phylogenetic diversity is not necessarily obtained through the protection of species. Optimal protection might instead require an increase in the extinction risks, or even an eradication, of species that either compete with, or prey on, other species. We provide a method that can determine the optimal protection of phylogenetic diversity within a set of interacting species. For a set of n interacting species the method requires n 2 extinction probabilities, which can be obtained by population viability analyses. The method can incorporate the effects from all possible species interactions together with the effects from all possible patterns by which the effects from the extinction of interacting species are linked together. The method provides a multi-species viability analysis, and a theoretical example is given to illustrate the optimal conservation of four interacting species showing, among other things, the existence of non-trivial solutions.

Journal

Ecological ModellingElsevier

Published: Jan 15, 2000

References

  • Population viability analysis
    Boyce, M.S.
  • Quasiextinction probabilities as a measure of impact on population growth
    Ginzburg, L.R.; Slobodkin, L.B.; Johnson, K.; Bindman, A.G.
  • Setting conservation priorities: The importance of endemism and phylogeny in the southern African orchid genus Herschelia
    Linder, H.P.
  • Application of a taxon priority system for conservation planning by selecting areas which are most distinct from environments already reserved
    Woinarski, J.C.Z.; Price, O.; Faith, D.P.

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