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.

Survival Rates and Population Dynamics of Bald Eagles on Chesapeake Bay

David A. Buehler, James D. Fraser, Janis K. D. Seegar and Glenn D. Therres
The Journal of Wildlife Management
Vol. 55, No. 4 (Oct., 1991), pp. 608-613
Published by: Wiley on behalf of the Wildlife Society
DOI: 10.2307/3809506
Stable URL: http://www.jstor.org/stable/3809506
Page Count: 6
  • Download ($42.00)
  • Subscribe ($19.50)
  • Cite this Item
Survival Rates and Population Dynamics of Bald Eagles on Chesapeake Bay
Preview not available

Abstract

Survival of 39 radio-tagged bald eagles (Haliaeetus leucocephalus) in the Chesapeake Bay region was 100% in the first year of life. Mean minimum survival per year of all eagles was 91% (95% CI = 86-96%); mean maximum survival was 98% (95% CI = 96-100%). A deterministic life-table model predicted a finite growth rate of 5.8% per year, whereas the growth rate based on the maximum survival estimates was 16.6% per year. The breeding population actually increased 12.6% per year from 1986 to 1990. We estimated the intrinsic growth rate at 6.9% based on natality and minimum survival data and 19.2% based on maximum survival data. Because eagle habitat is being converted to human developments at a rapid rate on the Chesapeake, models incorporating these habitat losses are needed to accurately predict future population trends.

Page Thumbnails

  • Thumbnail: Page 
608
    608
  • Thumbnail: Page 
609
    609
  • Thumbnail: Page 
610
    610
  • Thumbnail: Page 
611
    611
  • Thumbnail: Page 
612
    612
  • Thumbnail: Page 
613
    613