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A Unified Theory for the Study of Resource Selection (Availability and Use) by Wildlife Populations

In: Wildlife 2001: Populations

Author

Listed:
  • Dana L. Thomas

    (University of Alaska Fairbanks, Department of Mathematical Sciences)

  • Bryan F. J. Manly

    (University of Otago, Department of Mathematics and Statistics)

  • Lyman L. McDonald

    (WEST Inc)

Abstract

A unified theory of analysis is developed for comparing resource use and availability for wildlife populations based on the concept of resource selection functions. Each resource unit is characterized by values for p variables x = (X 1 ,X 2 ,…,X P ), and a resource selection probability function is defined to be the probability of a unit with X = x being used by time t. We propose that the function that gives the probability of a resource unit with xnot being used by time tshould be approximated by the proportional hazards model, which is widely used for survival distributions in other contexts. On this basis, we discuss how the resource selection probability function can be estimated from censuses or samples of available, used, or unused resource units taken after either one or several units of selection time.

Suggested Citation

  • Dana L. Thomas & Bryan F. J. Manly & Lyman L. McDonald, 1992. "A Unified Theory for the Study of Resource Selection (Availability and Use) by Wildlife Populations," Springer Books, in: Dale R. McCullough & Reginald H. Barrett (ed.), Wildlife 2001: Populations, pages 56-64, Springer.
    • Handle: RePEc:spr:sprchp:978-94-011-2868-1_6
    DOI: 10.1007/978-94-011-2868-1_6
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