scholarly journals Model Testing for Future Reintroductions of Desert Bighorn Sheep at Capitol Reef National Park

Author(s):  
Terri Steel ◽  
Michael Machalek ◽  
Gar Workman

The objective of the 1989 fieldwork was the testing of a model developed in 1988. The main project objectives are to: (1) evaluate the success of the transplant operations; (2) investigate habitat selection behavior of desert bighorn sheep (Ovis canadensis); and (3) develop a model which classifies areas suitable for sheep use. This model will then be incorporated into a Geographic Information System (G.I.S.) to examine macrohabitat use patterns. Software to be used includes: SAGIS, MAP, DBIII, and HOMER.

Author(s):  
C. Haas ◽  
Gar Workman

The ecology of a reintroduced population of desert bighorn sheep (Ovis canadensis nelsoni} is being investigated in Arches National Park. National Park Service objectives are: (1) determine general ecological parameters, including population and social dynamics, seasonal distribution and habitat use patterns, and general health characteristics; and (2) develop a comprehensive program of habitat analysis and evaluation that can be used to determine habitat suitability and identify transplant sites in other National Park Service units.


2001 ◽  
Vol 49 (2) ◽  
pp. 357-374 ◽  
Author(s):  
Sergio Alvarez-Cárdenas ◽  
Israel Guerrero-Cárdenas ◽  
Sara Dı́az ◽  
Patricia Galina-Tessaro ◽  
Sonia Gallina

2014 ◽  
Vol 5 (1) ◽  
pp. 3-13 ◽  
Author(s):  
Philip W. Hedrick ◽  
John D. Wehausen

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.


2021 ◽  
pp. 101328
Author(s):  
Manuel Vargas-Felipe ◽  
Luis Pellegrin ◽  
Aldo A. Guevara-Carrizales ◽  
A. Pastor López-Monroy ◽  
Hugo Jair Escalante ◽  
...  

Author(s):  
Michael Whitfield ◽  
Barry Keller

This study was initiated in order to determine the population status of bighorn sheep (Ovis canadensis) in the Teton Range. Intensive field studies were initiated in the summer of 1978 and will be continued during the winter of 1978-79 in order to delineate the distribution of sheep and to relate this distribution to habitat factors which affect seasonal distributions. Additionally, information on the history of bighorn sheep has been sought through interviews of longtime residents of the several valleys surrounding the Teton Range.


Author(s):  
Andrew S. Jones ◽  
Esther S. Rubin ◽  
Matthew J. Clement ◽  
Larisa E. Harding ◽  
Jacob I. Mesler

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