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- Title
Temporal variation in survival and recovery rates of lesser scaup.
- Authors
Arnold, Todd W.; Afton, Alan D.; Anteau, Michael J.; Koons, David N.; Nicolai, Chris A.
- Abstract
ABSTRACT Management of lesser scaup ( Aythya affinis) has been hindered by access to reliable data on population trajectories and vital rates. We conducted a Bayesian analysis of historical (1951-2011) band-recovery data throughout North America to estimate annual survival and recovery rates for juvenile and adult male and female lesser scaup to determine if increasing harvest or declining survival rates have contributed to population changes and to determine if harvest has been primarily additive or compensatory. Annual recovery rates were low, ranging from 1% to 4% for adults and 2% to 10% for juveniles during most years, with trend models indicating that recovery rates have declined through time for all age-sex classes. Annual survival (mid-Aug to mid-Aug) averaged 0.402 (
- Subjects
BIRD variation; LESSER scaup; MARK &; recapture (Population biology); SPATIO-temporal variation; WILDLIFE management; MARKOV chain Monte Carlo
- Publication
Journal of Wildlife Management, 2016, Vol 80, Issue 5, p850
- ISSN
0022-541X
- Publication type
Article
- DOI
10.1002/jwmg.21074