Changes in mallard breeding populations in relation to production and harvest rates
Journal of Wildlife Management
By: Robert E. Reynolds and John R. Sauer
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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 (x̄ = 0.064) compared to 1961-69 (x̄ = 1.096).
Study Area
| 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 |
| DOI | 10.2307/3808979 |
| Volume | 55 |
| Issue | 3 |
| Year Published | 1991 |
| Language | English |
| Publisher | Wiley |
| Contributing office(s) | Patuxent Wildlife Research Center |
| Description | 5 p. |
| First page | 483 |
| Last page | 487 |
| Country | Canada, United States |