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Changes in mallard breeding populations in relation to production and harvest rates

Journal of Wildlife Management

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Abstract

We used breeding population, band recovery, and hunter harvest data to examine whether rates of productivity and harvest correlated with annual changes in mallard (Anas platyrhynchos) breeding populations. Percent change in the size of the breeding population correlated positively with an index of production rate and negatively with an index of harvest rate (R2 = 0.37, F = 8.34, P < 0.005). Average harvest rate indices did not differ (W = 126, P < 0.32) between periods of increasing (1961-69) and decreasing (1970-85) populations. Indices to production tended to be lower (W = 143, P < 0.08) during 1970-85 (.hivin.x = 0.064) compared to 1961-69 (.hivin.x = 1.096).

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Changes in mallard breeding populations in relation to production and harvest rates
Series title:
Journal of Wildlife Management
Volume
55
Issue:
3
Year Published:
1991
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
483-487
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Wildlife Management
First page:
483
Last page:
487
Number of Pages:
5