Author: Moira Kolada
Publisher:
ISBN:
Category : Thesis
Languages : en
Pages : 176
Book Description
In semi-arid environments, such as the Great Basin, low productivity and frequent drought conditions increase the complexity of understanding the potential for competition, habitat selection, and dietary separation between native ungulates and cattle. I studied resource partitioning and spatial patterns of habitat use by female mule deer (Odocoileus hemionus) and female elk (Cervus elaphus) in eastern Nevada during winter, spring, and summer. I also examined dietary composition and overlap of mule deer, elk, and cattle. To assess resource partitioning and spatial distributions I used ecological niche factor analysis (ENFA) to analyze the areas used by radio-collared mule deer and elk and create habitat suitability maps for both species. I found that both species were using habitats close to dirt roads and that areas with high pinyon-juniper cover were avoided during all seasons. Nonetheless, there was selection for low-density pinyon-juniper areas and areas in proximity to pinyon-juniper. Mule deer selected for specific elevational ranges (2300m to 2500m) and areas close to springs during the summer. Elk selected for higher elevations during spring and summer. Slope and proximity to springs were also important during summer. I found that habitat use was more restricted during summer than for the other seasons for both species, but especially mule deer. My results suggest that in these semi-arid watersheds, mule deer and elk may be more restricted by availability of water and high quality forage during summer. To assess dietary composition and overlap between mule deer, elk, and cattle, diet utilization was quantified from microhistological analysis of rumen and fecal samples. I observed that there was not substantial dietary overlap among elk and mule deer from October to December, but that dietary overlap was greatest in summer. Elk and mule deer showed greater dietary overlap than elk and cattle. I observed a slight dietary separation among male and female elk, with female elk diets having a greater graminoid component than male elk. Elk and cattle exhibited greater dietary separation in my study area that included a crested wheatgrass seeding, suggesting either that elk avoided areas of high cattle concentration (i.e. crested wheatgrass seedings), or that cattle preferred the seeded grasses and utilized less of other forage species favored by elk.
Resource Partitioning and Dietary Overlap of Mule Deer and Elk in Eastern Nevada
Author: Moira Kolada
Publisher:
ISBN:
Category : Thesis
Languages : en
Pages : 176
Book Description
In semi-arid environments, such as the Great Basin, low productivity and frequent drought conditions increase the complexity of understanding the potential for competition, habitat selection, and dietary separation between native ungulates and cattle. I studied resource partitioning and spatial patterns of habitat use by female mule deer (Odocoileus hemionus) and female elk (Cervus elaphus) in eastern Nevada during winter, spring, and summer. I also examined dietary composition and overlap of mule deer, elk, and cattle. To assess resource partitioning and spatial distributions I used ecological niche factor analysis (ENFA) to analyze the areas used by radio-collared mule deer and elk and create habitat suitability maps for both species. I found that both species were using habitats close to dirt roads and that areas with high pinyon-juniper cover were avoided during all seasons. Nonetheless, there was selection for low-density pinyon-juniper areas and areas in proximity to pinyon-juniper. Mule deer selected for specific elevational ranges (2300m to 2500m) and areas close to springs during the summer. Elk selected for higher elevations during spring and summer. Slope and proximity to springs were also important during summer. I found that habitat use was more restricted during summer than for the other seasons for both species, but especially mule deer. My results suggest that in these semi-arid watersheds, mule deer and elk may be more restricted by availability of water and high quality forage during summer. To assess dietary composition and overlap between mule deer, elk, and cattle, diet utilization was quantified from microhistological analysis of rumen and fecal samples. I observed that there was not substantial dietary overlap among elk and mule deer from October to December, but that dietary overlap was greatest in summer. Elk and mule deer showed greater dietary overlap than elk and cattle. I observed a slight dietary separation among male and female elk, with female elk diets having a greater graminoid component than male elk. Elk and cattle exhibited greater dietary separation in my study area that included a crested wheatgrass seeding, suggesting either that elk avoided areas of high cattle concentration (i.e. crested wheatgrass seedings), or that cattle preferred the seeded grasses and utilized less of other forage species favored by elk.
Publisher:
ISBN:
Category : Thesis
Languages : en
Pages : 176
Book Description
In semi-arid environments, such as the Great Basin, low productivity and frequent drought conditions increase the complexity of understanding the potential for competition, habitat selection, and dietary separation between native ungulates and cattle. I studied resource partitioning and spatial patterns of habitat use by female mule deer (Odocoileus hemionus) and female elk (Cervus elaphus) in eastern Nevada during winter, spring, and summer. I also examined dietary composition and overlap of mule deer, elk, and cattle. To assess resource partitioning and spatial distributions I used ecological niche factor analysis (ENFA) to analyze the areas used by radio-collared mule deer and elk and create habitat suitability maps for both species. I found that both species were using habitats close to dirt roads and that areas with high pinyon-juniper cover were avoided during all seasons. Nonetheless, there was selection for low-density pinyon-juniper areas and areas in proximity to pinyon-juniper. Mule deer selected for specific elevational ranges (2300m to 2500m) and areas close to springs during the summer. Elk selected for higher elevations during spring and summer. Slope and proximity to springs were also important during summer. I found that habitat use was more restricted during summer than for the other seasons for both species, but especially mule deer. My results suggest that in these semi-arid watersheds, mule deer and elk may be more restricted by availability of water and high quality forage during summer. To assess dietary composition and overlap between mule deer, elk, and cattle, diet utilization was quantified from microhistological analysis of rumen and fecal samples. I observed that there was not substantial dietary overlap among elk and mule deer from October to December, but that dietary overlap was greatest in summer. Elk and mule deer showed greater dietary overlap than elk and cattle. I observed a slight dietary separation among male and female elk, with female elk diets having a greater graminoid component than male elk. Elk and cattle exhibited greater dietary separation in my study area that included a crested wheatgrass seeding, suggesting either that elk avoided areas of high cattle concentration (i.e. crested wheatgrass seedings), or that cattle preferred the seeded grasses and utilized less of other forage species favored by elk.
Resource Partitioning and Browse Use by Sympatric Elk, Mule Deer, and White-tailed Deer Populations on a Winter Range in Western Montana
Author: Gary Ross Baty
Publisher:
ISBN:
Category : Browse (Animal food)
Languages : en
Pages : 228
Book Description
Publisher:
ISBN:
Category : Browse (Animal food)
Languages : en
Pages : 228
Book Description
Abstracts of Papers Presented at the Annual Meeting
Author: Society for Range Management. Meeting
Publisher:
ISBN:
Category : Range management
Languages : en
Pages : 64
Book Description
Publisher:
ISBN:
Category : Range management
Languages : en
Pages : 64
Book Description
Wild and Free-roaming Horses and Burros
Author:
Publisher: National Academies
ISBN:
Category : Donkeys
Languages : en
Pages : 398
Book Description
Publisher: National Academies
ISBN:
Category : Donkeys
Languages : en
Pages : 398
Book Description
Wild and Free-roaming Horses and Burros
Author: National Research Council (U.S.). Committee on Wild and Free-Roaming Horses and Burros
Publisher:
ISBN:
Category : Donkeys
Languages : en
Pages : 798
Book Description
Publisher:
ISBN:
Category : Donkeys
Languages : en
Pages : 798
Book Description
Mule and Black-tailed Deer of North America
Author: Olof C. Wallmo
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 632
Book Description
Developed in co-operation with U.S. Department of Agriculture, Forest Service.
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 632
Book Description
Developed in co-operation with U.S. Department of Agriculture, Forest Service.
The American Midland Naturalist
Author:
Publisher:
ISBN:
Category : Natural history
Languages : en
Pages : 474
Book Description
Publisher:
ISBN:
Category : Natural history
Languages : en
Pages : 474
Book Description
Wild, Free-roaming Horses
Author: Mark Zarn
Publisher:
ISBN:
Category : Horses
Languages : en
Pages : 76
Book Description
Publisher:
ISBN:
Category : Horses
Languages : en
Pages : 76
Book Description
Behaviour and Management of European Ungulates
Author: Rory Putman
Publisher: Whittles
ISBN: 9781498705745
Category : Mammal populations
Languages : en
Pages : 0
Book Description
Ungulates are an extraordinarily important group of animals worldwide. In many cases, they are keystone species with a disproportionate effect on the functioning of the wider ecological systems of which they form a part. They can also serve as dominant species acting as ecological engineers and as a prey base for endangered or expanding populations of large carnivores. They are important culturally and economically, as a major source of protein in subsistence cultures and because of their wide exploitation in recreational hunting, which is still a major form of land use in many countries. The book considers a number of aspects of the balance of cost and benefit of ungulates and their management in Europe. Through a synthesis of the underlying biology and a comparison of the management techniques adopted in different countries, management approaches which seem effective within their respective circumstances are explored. Each chapter is written by experts in their own fields, ensuring that they are aware of the most up-to-date literature on that topic and can also offer an experienced and informed review based on their own research experience.
Publisher: Whittles
ISBN: 9781498705745
Category : Mammal populations
Languages : en
Pages : 0
Book Description
Ungulates are an extraordinarily important group of animals worldwide. In many cases, they are keystone species with a disproportionate effect on the functioning of the wider ecological systems of which they form a part. They can also serve as dominant species acting as ecological engineers and as a prey base for endangered or expanding populations of large carnivores. They are important culturally and economically, as a major source of protein in subsistence cultures and because of their wide exploitation in recreational hunting, which is still a major form of land use in many countries. The book considers a number of aspects of the balance of cost and benefit of ungulates and their management in Europe. Through a synthesis of the underlying biology and a comparison of the management techniques adopted in different countries, management approaches which seem effective within their respective circumstances are explored. Each chapter is written by experts in their own fields, ensuring that they are aware of the most up-to-date literature on that topic and can also offer an experienced and informed review based on their own research experience.
Using Science to Improve the BLM Wild Horse and Burro Program
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309264944
Category : Technology & Engineering
Languages : en
Pages : 399
Book Description
Using Science to Improve the BLM Wild Horse and Burro Program: A Way Forward reviews the science that underpins the Bureau of Land Management's oversight of free-ranging horses and burros on federal public lands in the western United States, concluding that constructive changes could be implemented. The Wild Horse and Burro Program has not used scientifically rigorous methods to estimate the population sizes of horses and burros, to model the effects of management actions on the animals, or to assess the availability and use of forage on rangelands. Evidence suggests that horse populations are growing by 15 to 20 percent each year, a level that is unsustainable for maintaining healthy horse populations as well as healthy ecosystems. Promising fertility-control methods are available to help limit this population growth, however. In addition, science-based methods exist for improving population estimates, predicting the effects of management practices in order to maintain genetically diverse, healthy populations, and estimating the productivity of rangelands. Greater transparency in how science-based methods are used to inform management decisions may help increase public confidence in the Wild Horse and Burro Program.
Publisher: National Academies Press
ISBN: 0309264944
Category : Technology & Engineering
Languages : en
Pages : 399
Book Description
Using Science to Improve the BLM Wild Horse and Burro Program: A Way Forward reviews the science that underpins the Bureau of Land Management's oversight of free-ranging horses and burros on federal public lands in the western United States, concluding that constructive changes could be implemented. The Wild Horse and Burro Program has not used scientifically rigorous methods to estimate the population sizes of horses and burros, to model the effects of management actions on the animals, or to assess the availability and use of forage on rangelands. Evidence suggests that horse populations are growing by 15 to 20 percent each year, a level that is unsustainable for maintaining healthy horse populations as well as healthy ecosystems. Promising fertility-control methods are available to help limit this population growth, however. In addition, science-based methods exist for improving population estimates, predicting the effects of management practices in order to maintain genetically diverse, healthy populations, and estimating the productivity of rangelands. Greater transparency in how science-based methods are used to inform management decisions may help increase public confidence in the Wild Horse and Burro Program.