Date of Award:
5-1997
Document Type:
Dissertation
Degree Name:
Doctor of Philosophy (PhD)
Department:
Wildland Resources
Department name when degree awarded
Fisheries and Wildlife Ecology
Committee Chair(s)
Michael R. Conover
Committee
Michael R. Conover
Committee
John A. Bissonette
Committee
Frederick F. Knowlton
Committee
Lyle G. McNeal
Committee
Robert H. Schmidt
Abstract
To evaluate preventive aerial coyote hunting as a depredation management technique, I compared sheep losses to coyote (Canis latrans) predation and the hours of corrective predation management required on summer grazing areas with and without hunting the prior winter from helicopters. Correlations were used to test for relationships between the extent, intensity, and timing of aerial hunting and lamb losses to coyote predation. Data on the age, sex, and reproductive status of coyotes killed using aerial hunting on coyote populations.
Winter aerial hunting reduced confirmed and estimated lamb losses to coyote predation and the hours of effort required for corrective predation management the subsequent summer. Aerial hunting increased the number of coyotes killed annually per grazing area, but did not reduce summer coyote removal. There were no consistent relationships between the extent, intensity, or timing of aerial hunting and sheep losses to coyote predation. The male: female ratio for coyotes captured with calling-and-shooting was higher than that for traps or aerial hunting. More juvenile coyotes were killed with aerial hunting than with traps or shooting. However, there was no difference in the age of adult coyotes (>1.5 years old) removed using any control method or between the age of coyotes from areas with and without consistent aerial hunting. Confounding factors in the data and the high number of controlled variables prohibited clear identification of the mechanism making aerial hunting effective.
I also examined financial compensation programs as an alternative to lethal control. Nineteen states and 7 Canadian provinces had compensation programs. Compensation programs appeared to be established when wildlife problems were of recent origin, resulted from government actions, and/or were caused by highly valued species. Compensation programs for coyote damage had been established in 4 states/provinces in eastern North America where coyotes are a new problem, but are unlikely to be a acceptable tool for the western U.S.
Checksum
cf22ddb1637b8386255acd931f003e7f
Recommended Citation
Wagner, Kimberly Kessler, "Preventive Predation Management: An Evaluation Using Winter Aerial Coyote Hunting in Utah and Idaho" (1997). All Graduate Theses and Dissertations, Spring 1920 to Summer 2023. 4054.
https://digitalcommons.usu.edu/etd/4054
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