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Book Desert Bighorn Sheep Adult Female and Lamb Survival  Cause specific Mortality  and Parturient Female Habitat Selection in the Peloncillo Mountains  New Mexico  USA

Download or read book Desert Bighorn Sheep Adult Female and Lamb Survival Cause specific Mortality and Parturient Female Habitat Selection in the Peloncillo Mountains New Mexico USA written by Rebekah Catherine Karsch and published by . This book was released on 2014 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: When adult female survival is high and relatively constant from year to year, juvenile survival is the primary demographic rate affecting population growth. Juvenile recruitment in desert bighorn sheep is highly variable from year to year, yet influencing factors are not well understood. The objective of this study was to estimate lamb survival rates. I captures and radiocollared 12 neonatal desert bighorn in 2012 and 14 in 2013 in the Peloncillo Mountains, New Mexico. There were 14 mortalities; 12 of which were due to predation, which was the leading proximate cause of mortality. I used the nest survival model in program MARK to estimate survival to 6 months of age. Model {S1[subscript wk,]>1[subscript wk]} performed the best in 2012, indicating that a 2-stage age interval (1 week and > 1 week) best explained survival. Survival estimate in 2012 for 1 week was 0.92 (SE = 0.08) and average weekly survival for >1 week was 0.99 (SE = 0.006). Survival in 2013 was best explained by a 3-stage age interval model {S1[subscript wk, 2-8 wks, and > 8 wks]}. Survival estimate for 1 week, and average weekly survival for 2-8 weeks and >8weeks were 0.77 (SE = 0.11), 0.89 (SE = 0.04) and 0.89 (SE = 0.016), respectively. Precipitation patterns directly affect plant growth in desert environments, thus influencing forage quality; which past studies have shown effects female condition and survival of young. Precipitation and forage conditions alone, however, do not fully explain the high annual variability in recruitment during this study. The indirect effect of long-term drought on lamb survival may be compounded by the cumulative negative effects of a multi-predator system. Past studies have shown that in multi-predator systems, ungulates may select or avoid particular resources in an attempt to minimize predation risk. Furthermore, prey switching may be especially pronounced in arid systems where drought lowers the abundance of primary prey, and pulses of resources vary dramatically with seasonal fluctuations. Thus, predation should be considered an additive source of mortality, not as a wholly separate factor from forage conditions during periods of drought.

Book Comparing Levels and Factors of Lamb Mortality Between Two Herds of Rocky Mountain Bighorn Sheep in the Black Hills  South Dakota

Download or read book Comparing Levels and Factors of Lamb Mortality Between Two Herds of Rocky Mountain Bighorn Sheep in the Black Hills South Dakota written by Deirdre S. Merwin and published by . This book was released on 2000 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Man  the Greatest Enemy of Desert Bighorn Mountain Sheep

Download or read book Man the Greatest Enemy of Desert Bighorn Mountain Sheep written by Butch Carson and published by . This book was released on 1941 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Sheep and Lamb Nonpredator Death Loss in the United States  2004

Download or read book Sheep and Lamb Nonpredator Death Loss in the United States 2004 written by and published by . This book was released on 2006 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Causes of Bighorn Sheep Mortality and Dieoffs

Download or read book Causes of Bighorn Sheep Mortality and Dieoffs written by H. M. Schwantje and published by . This book was released on 1988 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Occurrence of Selected Infectious Diseases in the Desert Bighorn Sheep  Ovis Canadensis Cremnobates  Herds of the Santa Rosa Mountains  California

Download or read book The Occurrence of Selected Infectious Diseases in the Desert Bighorn Sheep Ovis Canadensis Cremnobates Herds of the Santa Rosa Mountains California written by J. C. Turner and published by . This book was released on 1982 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Bighorn Sheep Mortality in the Taylor River   Altmont Triangle Area  1978 79   a Case Study

Download or read book Bighorn Sheep Mortality in the Taylor River Altmont Triangle Area 1978 79 a Case Study written by Victor Feuerstein and published by . This book was released on 1980 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Investigation of Bighorn Sheep Mortality

Download or read book Investigation of Bighorn Sheep Mortality written by and published by . This book was released on 1976 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Factors Influencing Mortality of Bighorn Sheep  Ovis Canadensis

Download or read book Factors Influencing Mortality of Bighorn Sheep Ovis Canadensis written by Emily Moberg and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: