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Evaluation of a mallard productivity model

By:
, , and
Edited by:
J. Verner, L.M. Morrison, and C.J. Ralph

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Abstract

A stochastic model of mallard (Anas platyrhynchos) productivity has been developed over a 10-year period and successfully applied to several management questions. Here we review the model and describe some recent uses and improvements that increase its realism and applicability, including naturally occurring changes in wetland habitat, catastrophic weather events, and the migrational homing of mallards. The amount of wetland habitat influenced productivity primarily by affecting the renesting rate. Late snowstorms severely reduced productivity, whereas the loss of nests due to flooding was largely compensated for by increased renesting, often in habitats where hatching rates were better. Migrational homing was shown to be an important phenomenon in population modeling and should be considered when evaluating management plans.

Additional Publication Details

Publication type:
Book chapter
Publication Subtype:
Book Chapter
Title:
Evaluation of a mallard productivity model
Year Published:
1986
Language:
English
Publisher:
University of Wisconsin Press
Publisher location:
Madison, WI
Contributing office(s):
Northern Prairie Wildlife Research Center
Description:
p. 23-29
Larger Work Type:
Book
Larger Work Subtype:
Other Government Series
Larger Work Title:
Wildlife 2000: modeling habitat relationships of terrestrial vertebrates