Duck nest success declines with and without predator management

Article Abstract:

Historical data from 1937 to 1990 reveal that predator management does not affect nest success among the ducks in the Prairie Pothole Region. Nest success declined over time in areas with or without mammalian predator control, whether this be by removal, e.g., hunting, trapping or poisoning, or by protection, e.g., fences and artificial islands. The phenomenon may be accounted for by the following. Compensatory predation, presence of avian predators and density dependent predation in small areas. The results imply the judicious application of predator management which has been proved costly.

Management, Evaluation, Protection and preservation, Habitats, Ducks, Predator control, Game and game-birds, Game animals, Game birds, Prairie ecology, Wildlife management areas

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Rabies control: an adaptive management approach

Article Abstract:

Theory suggests that disease can regulate a population but little research has investigated the theory. An ongoing disease management program is used as the basis of a controlled field experiment to test whether a population of striped skunks in Scarborough, ON, is limited by rabies. Between 1987 and 1994, striped skunks in an experimental area were vaccinated against rabies, but the new study found no difference in abundance patterns between the untreated and treated area. No conclusion can be reached on the advisability of vaccination as an anti-rabies program.

Rabies, Wildlife management, Control, Skunks

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