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Adaptive Harvest Management  Waterfowl Home  Adaptive Harvest
Management (AHM) is the tool for selecting duck hunting
regulations used by the U.S. Fish and Wildlife Service, the
flyways and states. Key components of AHM are agreement on goals
of mallard harvest management, a limited number of regulatory
alternatives, and alternative models of population dynamics. The
alternative models reflect disagreement among managers regarding
effects of hunting regulations on harvest and population size.
With AHM, the setting of hunting regulations involves a
repeating process:   1. each year, an optimal regulation is
identified based on mallard population size and habitat status,
and on the relative ability of alternative models to mimic
population dynamics   2. after the regulatory decision is made,
each population model is used to predict mallard breeding
population size the following year   3.