Responses of Desert Bighorn Sheep to Increased Human Recreation

2001 ◽  
Vol 65 (3) ◽  
pp. 573 ◽  
Author(s):  
Christopher M. Papouchis ◽  
Francis J. Singer ◽  
William B. Sloan
Keyword(s):  
Bighorn Sheep ◽  
Desert Bighorn Sheep ◽  
Human Recreation

Desert bighorn sheep responses to human activity in south-eastern Utah

2020 ◽  
Vol 47 (1) ◽  
pp. 16 ◽  
Author(s):  
Kanalu K. Sproat ◽  
Nathan R. Martinez ◽  
Tom S. Smith ◽  
William B. Sloan ◽  
Jerran T. Flinders ◽  
...  
Keyword(s):  
Human Activity ◽  
Physiological Stress ◽  
Bighorn Sheep ◽  
Desert Bighorn Sheep ◽  
Low Level ◽  
South Eastern ◽  
Human Use ◽  
High Level ◽  
Recreational Use ◽  
Human Recreation

Abstract ContextHuman activity in wildlands can influence wildlife populations by decreasing or degrading habitat, decreasing survival, or through displacement. For bighorn sheep (Ovis canadensis), some human activities are detrimental and may result in physiological stress, altered activity budgets, or habitat abandonment. From 1979 to 2000, human recreation increased over 300% in areas occupied by desert bighorn sheep (O. c. nelsoni) in south-eastern Utah. Concurrently, the population of desert bighorn sheep occupying the Potash Bighorn Sheep Management Unit of south-eastern Utah was in steep decline. AimsWe investigated behavioural responses of desert bighorn sheep to different levels of human activity in this area from 2002 to 2003. MethodsWe divided the study population into two areas on the basis of the level of human use, i.e. low and high. We observed desert bighorn sheep at seven sites within these areas, including three with a high level of human use and four areas of a low level of human use. Key resultsDesert bighorn sheep spent significantly less time grazing and more time vigilant in areas of a high level of human use than in areas of a low level of human use. ConclusionsHuman recreational use of desert bighorn sheep habitat has the potential to negatively affect foraging by desert bighorn sheep. ImplicationsWe raise a cautionary flag because recreational use in bighorn sheep habitat near Moab, Utah, continues to increase and bighorn numbers continue to decline. When managers consider proposals to increase areas or trails for human recreation, they should incorporate ways to minimise impacts and reduce stressors to bighorn sheep.

CHARACTERIZATION OF AN ANAPLASMA OVIS ISOLATE FROM DESERT BIGHORN SHEEP IN SOUTHERN CALIFORNIA

1993 ◽  
Vol 29 (4) ◽  
pp. 540-546 ◽  
Author(s):  
Will Goff ◽  
David Stiller ◽  
David Jessup ◽  
Peter Msolla ◽  
Walter Boyce ◽  
...  
Keyword(s):  
Southern California ◽  
Bighorn Sheep ◽  
Desert Bighorn Sheep ◽  
Anaplasma Ovis

scholarly journals Diel Activity of Female Desert Bighorn Sheep in Western Arizona

1989 ◽  
Vol 53 (1) ◽  
pp. 264 ◽  
Author(s):  
Jay A. Alderman ◽  
Paul R. Krausman ◽  
Bruce D. Leopold
Keyword(s):  
Bighorn Sheep ◽  
Diel Activity ◽  
Desert Bighorn Sheep

scholarly journals Desert Bighorn Sheep: Changes in Genetic Variation Over Time and the Impact of Merging Populations

2014 ◽  
Vol 5 (1) ◽  
pp. 3-13 ◽  
Author(s):  
Philip W. Hedrick ◽  
John D. Wehausen
Keyword(s):  
Genetic Variation ◽  
New Mexico ◽  
Monitoring And Evaluation ◽  
Bighorn Sheep ◽  
Ovis Canadensis ◽  
Mexican Population ◽  
Desert Bighorn Sheep ◽  
Two Generations ◽  
The Impact ◽  
Over Time

Abstract Founder effects, genetic bottlenecks, and genetic drift in general can lead to low levels of genetic diversity, which can influence the persistence of populations. We examine genetic variation in two populations of desert bighorn sheep Ovis canadensis from New Mexico and Mexico to measure change over time and evaluate the impact of introducing individuals from one population into the other. Over about three generations, the amount of genetic variation in the New Mexico population increased. In contrast, over about two generations the amount of genetic variation in the Mexican population decreased by a great extent compared with an estimate from another Mexican population from which it is primarily descended. The potential reasons for these changes are discussed. In addition, although both populations have low genetic variation, introduction of Mexican rams into the New Mexico population might increase the amount of genetic variation in the New Mexico population. Overall, it appears that management to increase genetic variation might require substantial detailed monitoring and evaluation of ancestry from the different sources and fitness components.

Cloning of Exotic/Endangered Species: Desert Bighorn Sheep

2006 ◽  
pp. 169-181 ◽  
Author(s):  
James “Buck” Williams ◽  
Taeyoung Shin ◽  
Ling Liu ◽  
Gabriela Flores-Foxworth ◽  
Juan Romano ◽  
...  
Keyword(s):  
Endangered Species ◽  
Bighorn Sheep ◽  
Desert Bighorn Sheep

scholarly journals Genetic and Environmental Indicators of Climate Change Vulnerability for Desert Bighorn Sheep

2020 ◽  
Vol 8 ◽  
Author(s):  
Tyler G. Creech ◽  
Clinton W. Epps ◽  
John D. Wehausen ◽  
Rachel S. Crowhurst ◽  
Jef R. Jaeger ◽  
...  
Keyword(s):  
Climate Change ◽  
Bighorn Sheep ◽  
Environmental Indicators ◽  
Desert Bighorn Sheep ◽  
Climate Change Vulnerability
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