Author: Charles Anthony Irvine
Publisher:
ISBN:
Category : Desert bighorn sheep
Languages : en
Pages : 200
Book Description
In April, 1967, this study was begun in a 211 -square-mile area, in the rugged, arid, Red Canyon area in San Juan County, southeastern Utah. Sixteen months were spent in the field to determine the population trend, migration, distribution, and the effect of water on distribution of the bighorn sheep. No migration was documented, but seasonal shifts did occur. The shifts were due to the availability of water in the free state and in plants. Dry periods forced sheep to remain close to seeps and springs. Lambing peaked in May and was over by June. Lou lamb mortality and high numbers of yearlings indicated a growing population which is re - covering from severe mortality during the uranium boom in the 1950's. Sheep preferred browse but seasonal shifts occurred, grasses and forbs being preferred. Plants analyzed for protein proved adequate for gravid and lactating domestic ewes, and this is believed adequate for wild sheep. However, plants were found to be deficient in phosphorus. Parasites, disease and poisonous plants were not found to be limiting factors during the study. A 50-50 sex ratio, expected in a wild, relatively un-hunted population, was found during this study. Spermatogenesis to some degree was evident in all trophy rams examined taken during the hunt. No biological reason to remove rams could be ascertained. Recommendations for management of the desert bighorn sheep in southeastern Utah include removing cattle from she e p ranges, water development and maintenance, continued ewe -lamb surveys, hunting of trophy animals, and studying all wild sheep populations in the state.
The Desert Bighorn Sheep of Southeastern Utah
Author: Charles Anthony Irvine
Publisher:
ISBN:
Category : Desert bighorn sheep
Languages : en
Pages : 200
Book Description
In April, 1967, this study was begun in a 211 -square-mile area, in the rugged, arid, Red Canyon area in San Juan County, southeastern Utah. Sixteen months were spent in the field to determine the population trend, migration, distribution, and the effect of water on distribution of the bighorn sheep. No migration was documented, but seasonal shifts did occur. The shifts were due to the availability of water in the free state and in plants. Dry periods forced sheep to remain close to seeps and springs. Lambing peaked in May and was over by June. Lou lamb mortality and high numbers of yearlings indicated a growing population which is re - covering from severe mortality during the uranium boom in the 1950's. Sheep preferred browse but seasonal shifts occurred, grasses and forbs being preferred. Plants analyzed for protein proved adequate for gravid and lactating domestic ewes, and this is believed adequate for wild sheep. However, plants were found to be deficient in phosphorus. Parasites, disease and poisonous plants were not found to be limiting factors during the study. A 50-50 sex ratio, expected in a wild, relatively un-hunted population, was found during this study. Spermatogenesis to some degree was evident in all trophy rams examined taken during the hunt. No biological reason to remove rams could be ascertained. Recommendations for management of the desert bighorn sheep in southeastern Utah include removing cattle from she e p ranges, water development and maintenance, continued ewe -lamb surveys, hunting of trophy animals, and studying all wild sheep populations in the state.
Publisher:
ISBN:
Category : Desert bighorn sheep
Languages : en
Pages : 200
Book Description
In April, 1967, this study was begun in a 211 -square-mile area, in the rugged, arid, Red Canyon area in San Juan County, southeastern Utah. Sixteen months were spent in the field to determine the population trend, migration, distribution, and the effect of water on distribution of the bighorn sheep. No migration was documented, but seasonal shifts did occur. The shifts were due to the availability of water in the free state and in plants. Dry periods forced sheep to remain close to seeps and springs. Lambing peaked in May and was over by June. Lou lamb mortality and high numbers of yearlings indicated a growing population which is re - covering from severe mortality during the uranium boom in the 1950's. Sheep preferred browse but seasonal shifts occurred, grasses and forbs being preferred. Plants analyzed for protein proved adequate for gravid and lactating domestic ewes, and this is believed adequate for wild sheep. However, plants were found to be deficient in phosphorus. Parasites, disease and poisonous plants were not found to be limiting factors during the study. A 50-50 sex ratio, expected in a wild, relatively un-hunted population, was found during this study. Spermatogenesis to some degree was evident in all trophy rams examined taken during the hunt. No biological reason to remove rams could be ascertained. Recommendations for management of the desert bighorn sheep in southeastern Utah include removing cattle from she e p ranges, water development and maintenance, continued ewe -lamb surveys, hunting of trophy animals, and studying all wild sheep populations in the state.
The Ecology of the Desert Bighorn Sheep on Southeastern Utah on Bueau of Land Management Lands
Author: Gar Workman
Publisher:
ISBN:
Category : Bighorn sheep
Languages : en
Pages : 12
Book Description
Publisher:
ISBN:
Category : Bighorn sheep
Languages : en
Pages : 12
Book Description
Distribution and Ecology of the Desert Bighorn Sheep in Southeastern Utah
Author: Lanny O. Wilson
Publisher:
ISBN:
Category : Bighorn sheep
Languages : en
Pages : 470
Book Description
Publisher:
ISBN:
Category : Bighorn sheep
Languages : en
Pages : 470
Book Description
Third Year Final Report
Author: Michael M. King
Publisher:
ISBN:
Category : Animal ecology
Languages : en
Pages : 246
Book Description
Publisher:
ISBN:
Category : Animal ecology
Languages : en
Pages : 246
Book Description
Second Year Final Report
Author: Michael M. King
Publisher:
ISBN:
Category : Animal ecology
Languages : en
Pages : 0
Book Description
Publisher:
ISBN:
Category : Animal ecology
Languages : en
Pages : 0
Book Description
First Year Final Report
Author: Michael M. King
Publisher:
ISBN:
Category : Animal ecology
Languages : en
Pages : 122
Book Description
Publisher:
ISBN:
Category : Animal ecology
Languages : en
Pages : 122
Book Description
Desert Bighorn Sheep and Water
Author: Paul R. Krausman
Publisher:
ISBN:
Category : Bighorn sheep
Languages : en
Pages : 38
Book Description
Publisher:
ISBN:
Category : Bighorn sheep
Languages : en
Pages : 38
Book Description
American Desert Bighorn Sheep in Utah
American Desert Bighorn Sheep in Utah
The Desert Bighorn
Author: Gale Monson
Publisher: University of Arizona Press
ISBN: 0816552487
Category : Science
Languages : en
Pages : 393
Book Description
"A landmark, fundamental for all students in the field. . . . The material, in itself fascinating and lucidly presented, will draw the reader through and increase his understanding of the bighorn at just about every turn of the page." —Orion Nature Book Review "An intelligently researched and fully documented analysis of this noble rock-climber's life history, and ecology, and the human management of this nearly impossible-to-manage wilderness species." —American Field "An outstanding and comprehensive work." —Books of the Southwest "There is quite simply nothing else around that can tell you anywhere near as much about desert sheep, by anywhere near so distinguished a crew of authors." —Safari
Publisher: University of Arizona Press
ISBN: 0816552487
Category : Science
Languages : en
Pages : 393
Book Description
"A landmark, fundamental for all students in the field. . . . The material, in itself fascinating and lucidly presented, will draw the reader through and increase his understanding of the bighorn at just about every turn of the page." —Orion Nature Book Review "An intelligently researched and fully documented analysis of this noble rock-climber's life history, and ecology, and the human management of this nearly impossible-to-manage wilderness species." —American Field "An outstanding and comprehensive work." —Books of the Southwest "There is quite simply nothing else around that can tell you anywhere near as much about desert sheep, by anywhere near so distinguished a crew of authors." —Safari