Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If you need an accessible version of this item please contact JSTOR User Support

Optimal Resource Allocation in a Randomly Varying Environment

W. S. C. Gurney and D. A. J. Middleton
Functional Ecology
Vol. 10, No. 5 (Oct., 1996), pp. 602-612
DOI: 10.2307/2390170
Stable URL: http://www.jstor.org/stable/2390170
Page Count: 11
  • Read Online (Free)
  • Download ($18.00)
  • Subscribe ($19.50)
  • Cite this Item
If you need an accessible version of this item please contact JSTOR User Support
Optimal Resource Allocation in a Randomly Varying Environment
Preview not available

Abstract

1. We construct a simple strategic population model to investigate optimal allocation of resources (in excess of those required for maintenance) to growth and/or reproduction. 2. Analysis of the model for a constant environment demonstrates that determinate growth (where growth ceases at reproductive maturity) is always the optimal strategy. 3. We conduct numerical competition experiments to investigate optimal allocation in randomly varying environments, under three different noise models. 4. Indeterminate growth (simultaneous growth and reproduction over some of the individual's lifetime) is optimal in varying environments where the variability is intense and on a time-scale comparable with that of an individual's lifetime. 5. The long-run growth rate and the correlation between phenotype biomass and environment are maximized by sucessful competitors in the numerical contests. The presence of a competitor is shown to be an essential component defining the `environment'. Optimization of various fitness measures in a single phenotype situation does not reveal the optimum for the competitive situation.

Page Thumbnails

  • Thumbnail: Page 
602
    602
  • Thumbnail: Page 
603
    603
  • Thumbnail: Page 
604
    604
  • Thumbnail: Page 
605
    605
  • Thumbnail: Page 
606
    606
  • Thumbnail: Page 
607
    607
  • Thumbnail: Page 
608
    608
  • Thumbnail: Page 
609
    609
  • Thumbnail: Page 
610
    610
  • Thumbnail: Page 
611
    611
  • Thumbnail: Page 
612
    612