thumbnail

Mathematics and mallard management

Journal of Wildlife Management

By:
and
DOI: 10.2307/3800632

Links

Abstract

Waterfowl managers can effectively use simple population models to aid in making management decisions. We present a basic model of the change in population size as related to survival and recruitment. A management technique designed to increase survival of mallards (Anas platyrhynchos) by limiting harvest on the Chippewa National Forest, Minnesota, is used to illustrate the application of models in decision making. The analysis suggests that the management technique would be of limited effectiveness. In a 2nd example, the change in mallard population in central North Dakota is related to implementing programs to create dense nesting cover with or without supplementary predator control. The analysis suggests that large tracts of land would be required to achieve a hypothetical management objective of increasing harvest by 50% while maintaining a stable population. Less land would be required if predator reduction were used in combination with cover management, but questions about effectiveness and ecological implications of large scale predator reduction remain unresolved. The use of models as a guide to planning research responsive to the needs of management is illustrated.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Mathematics and mallard management
Series title:
Journal of Wildlife Management
DOI:
10.2307/3800632
Volume
43
Issue:
1
Year Published:
1979
Language:
English
Description:
p. 18-35
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Wildlife Management
First page:
18
Last page:
35
Number of Pages:
17