Access

You are not currently logged in.

Access JSTOR through your library or other institution:

login

Log in through your institution.

Journal Article

Parameters for Seasonally Breeding Populations

Graeme Caughley
Ecology
Vol. 48, No. 5 (Sep., 1967), pp. 834-839
Published by: Wiley on behalf of the Ecological Society of America
DOI: 10.2307/1933741
Stable URL: http://www.jstor.org/stable/1933741
Page Count: 6
Were these topics helpful?
See somethings inaccurate? Let us know!

Select the topics that are inaccurate.

Cancel
  • Download ($42.00)
  • Subscribe ($19.50)
  • Add to My Lists
  • Cite this Item
Parameters for Seasonally Breeding Populations
Preview not available

Abstract

Lotka's equations relating the parameters of populations with no seasonal trend in birth rates and Fisher's formula for @'reproductive value@' are modified to describe populations with restricted annual seasons of birth. The parameters @'net reproductive rate@' and @'mean generation length@' provide statistics and dubious utility for populations with overlapping generations. New definitions of birth rate and death rate are proposed whereby the relationships between the crude, finite and exponential rates are simplified. The use of these parameters is illustrated by statistics calculated for a population of sheep.

Page Thumbnails

  • Thumbnail: Page 
834
    834
  • Thumbnail: Page 
835
    835
  • Thumbnail: Page 
836
    836
  • Thumbnail: Page 
837
    837
  • Thumbnail: Page 
838
    838
  • Thumbnail: Page 
839
    839
Part of Sustainability