Spring and Summer Habitat Preferences of Blue Grouse on the Bear River Range, Utah PDF Download
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Author: Robert M. Maestro Publisher: ISBN: Category : Blue grouse Languages : en Pages : 134
Book Description
A study of the spring and summer habitat preferences of blue grouse was conducted on the Bear River Range in northern Utah. The main objective was to determine the important factors associated with habitat selection by blue grouse during the breeding season. One hundred and two sampling areas, delimited by similarities in vegetation and topography, were thoroughly searched with a dog for blue grouse. Fifty-four bio logical and physical variables were measured for each sampling area. Chi-square tests performed on all variables showed 11 of the 54 variables to be significant at an alpha of 0.20. These 11 variables (listed below) were considered to be the important factors influencing habitat selection by blue grouse. (1) search area type (2) area exposure (3) elevation (4) percent forested (5) understory density (6) primary cover species (7) secondary cover species (8) percent cover maples (Acer grandidentatum) (9) percent cover mixed brush (10) percent cover sagebrush (Artemisia tridentata) (11) total acres The chi-square test only determined if a variable significantly effected habitat selection by blue grouse. To determine whether this effect was positive or negative, the percent occurrence of areas on which blue grouse were present, or absent, was determined. Results indicated that the most favorable blue grouse habitat was draws at 5,500 -6.499 feet elevation. This favorable habitat contained 1-10 percent cover by maples, or a higher percent of maple which provided a large amount of edge effect; the presence of mixed brush or sagebrush, a medium understory, and an area incline of 5-19 percent.
Author: Robert M. Maestro Publisher: ISBN: Category : Blue grouse Languages : en Pages : 134
Book Description
A study of the spring and summer habitat preferences of blue grouse was conducted on the Bear River Range in northern Utah. The main objective was to determine the important factors associated with habitat selection by blue grouse during the breeding season. One hundred and two sampling areas, delimited by similarities in vegetation and topography, were thoroughly searched with a dog for blue grouse. Fifty-four bio logical and physical variables were measured for each sampling area. Chi-square tests performed on all variables showed 11 of the 54 variables to be significant at an alpha of 0.20. These 11 variables (listed below) were considered to be the important factors influencing habitat selection by blue grouse. (1) search area type (2) area exposure (3) elevation (4) percent forested (5) understory density (6) primary cover species (7) secondary cover species (8) percent cover maples (Acer grandidentatum) (9) percent cover mixed brush (10) percent cover sagebrush (Artemisia tridentata) (11) total acres The chi-square test only determined if a variable significantly effected habitat selection by blue grouse. To determine whether this effect was positive or negative, the percent occurrence of areas on which blue grouse were present, or absent, was determined. Results indicated that the most favorable blue grouse habitat was draws at 5,500 -6.499 feet elevation. This favorable habitat contained 1-10 percent cover by maples, or a higher percent of maple which provided a large amount of edge effect; the presence of mixed brush or sagebrush, a medium understory, and an area incline of 5-19 percent.
Author: David A. Weber Publisher: ISBN: Category : Blue grouse Languages : en Pages : 150
Book Description
The ecology and habitat requirements of a population of blue grouse were studied during 1970 and 1971 on the Cache National Forest 25 miles south of Logan, Utah. Baseline data concerning numbers of blue grouse, vegetative composition, and insect abundance on the study area were gathered. These data were to be compared to similar measurements made following a herbicidal spraying of the area during 1972. Information concerning the breeding, nesting, brood rearing, and wintering habits of the grouse was also collected. Male blue grouse migrated to the study area in early April to set up territories. These were located on open tree-shrub hillsides. Seven nests were located under sagebrush bushes. About 18 to 20 broods were on the study area during 1971. Young grouse consumed insects primarily during the summer. Males migrated from area by July and females and broods moved off in late August and early September.
Author: Brett K. Sandercock Publisher: Univ of California Press ISBN: 0520270061 Category : Medical Languages : en Pages : 376
Book Description
"Summarizing current knowledge of grouse biology, this volume is organized in four sections--spatial ecology, habitat relationships, population biology, and conservation and management--and offers insights into spatial requirements, movements, and demography of grouse. Much of the research employs emerging tools in ecology that span biogeochemistry, molecular genetics, endocrinology, radio-telemetry, and remote sensing".--Adapted from publisher descrip tion on back cover
Author: Steve Knick Publisher: Univ of California Press ISBN: 0520948688 Category : Science Languages : en Pages : 665
Book Description
Admired for its elaborate breeding displays and treasured as a game bird, the Greater Sage-Grouse is a charismatic symbol of the broad open spaces in western North America. Unfortunately these birds have declined across much of their range—which stretches across 11 western states and reaches into Canada—mostly due to loss of critical sagebrush habitat. Today the Greater Sage-Grouse is at the center of a complex conservation challenge. This multifaceted volume, an important foundation for developing conservation strategies and actions, provides a comprehensive synthesis of scientific information on the biology and ecology of the Greater Sage-Grouse. Bringing together the experience of thirty-eight researchers, it describes the bird’s population trends, its sagebrush habitat, and potential limitations to conservation, including the effects of rangeland fire, climate change, invasive plants, disease, and land uses such as energy development, grazing, and agriculture.
Author: Ilse Storch Publisher: World Conservation Union ISBN: 9782831705194 Category : Birds Languages : en Pages : 0
Book Description
Grouse have long attracted and fascinated people. Their display behavior, and their traditional communal mating grounds or "leks", have inspired poetry and folklore as well as scientific theories on sexual selection and mating systems. In many parts of their range, hunting plays a major role in the culture, economy, and subsistence of local communities. Although from a global perspective their status is not critical, grouse are far from being safe, and on a local scale, many local populations of grouse are declining and threatened with extinction. This plan provides a guide to the distribution, status, and threats to all grouse species; its major objective is to identify conservation priorities from a global perspective.
Author: Robert M. Maestro
Author: Robert M. Maestro
Author: United States. Bureau of Sport Fisheries and Wildlife
Author: Utah Cooperative Wildlife Research Unit
Author: William Harroun Behle
Author: 
Author: David A. Weber
Author: Brett K. Sandercock
Author: Steve Knick
Author: Ilse Storch
Author: United States. Bureau of Land Management. Richfield District