Response of desert ungulates to a water project in Arizona

Article Abstract:

The home range size, vegetation associations and frequency of animal populations within a 550-meter radius of the Hayden-Rhodes Aqueduct in Arizona was investigated during the construction of and after completion of the project. The experiment sought to determine the effect of such projects on the bighorn sheep in the Little Harquahala Mountains and on mule deer in the Belmont and Big Horn Mountains. The results showed no changes in the habitats or movements of either animal despite the additional water in the environment.

Home range, Mule deer, Perissodactyla, Bighorn sheep, Bighorn Mountains, Harqua Hala, Arizona

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Ungulate effects on the functional species composition of plant communities: herbivore selectivity and plant tolerance

Article Abstract:

The effects of ungulate herbivores on plant community composition were examined to determine the role of herbivore selectivity and to identify the characteristics of ecosystems which influence the effects of herbivore selectivity and plant tolerance on the functional composition of plant communities. Results indicated that differences among ecosystems in the role played by ungulate herbivory result from the relative strength of these factors enhancing plant tolerance to herbivory and limiting foraging selectivity.

Plant communities, Herbivores, Forage plants

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Experimental reduction of wolves in the Yukon: ungulate responses and management implications

Article Abstract:

This journal supplement offers an in-depth examination of the effects of wolf predator control on ungulate prey populations in Canada's Yukon Territory. Topics include both lethal and nonlethal methods of wolf population control, caribou and moose abundance, caribou and moose recruitment and survival, and caribou and moose sex ratios. Implications for wildlife management are discussed.

Yukon Territory, Methods, Evaluation, Behavior, Protection and preservation, Wolves, Predator control, Arctic wolf

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