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Monitoring and Management Strategies for Endangered Populations of Marine Mammals and Ungulates

In: Wildlife 2001: Populations

Author

Listed:
  • Sarah M. Durant

    (University of Cambridge, Department of Zoology)

  • John Harwood

    (St. Edmund’s College, and Sea Mammal Research Unit, Research Group on Conservation Biology)

  • Roseline C. Beudels

    (Institut Royal des Sciences Naturelles de Belgique)

Abstract

We use studies of the highly endangered Mediterranean monk seal (Monachus monachus) and the locally vulnerable roan antelope (Hippotragus ursinus) to show how a combination of simulation modelling and field study can be used to develop a conservation program that substantially reduces the risks of extinction for small populations. The model takes account of metapopulation structure, demographic and environmental stochasticity, and keeps track of genetic variability. It is used to identify demographic characteristics that are reliable predictors of imminent extinction and to assess the likely effectiveness of different management actions. Monitoring population size and juvenile sex ratio in a small number of monk seal sub-populations provides a good indication of the risk of extinction, which can be substantially reduced by increasing juvenile survival with a network of rescue centers. For roan antelope, the number of stable social groups in a protected area is an appropriate predictor of extinction risk.

Suggested Citation

  • Sarah M. Durant & John Harwood & Roseline C. Beudels, 1992. "Monitoring and Management Strategies for Endangered Populations of Marine Mammals and Ungulates," Springer Books, in: Dale R. McCullough & Reginald H. Barrett (ed.), Wildlife 2001: Populations, pages 252-261, Springer.
    • Handle: RePEc:spr:sprchp:978-94-011-2868-1_21
    DOI: 10.1007/978-94-011-2868-1_21
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