Thesis (M.S.)--Oregon State University, 2001. / Typescript (photocopy). Includes bibliographical references (leaves 57-62). Also available on the World Wide Web.

Thesis (M.S.)--University of Nevada, Reno, 2006. / "May, 2006." Includes bibliographical references (leaves 92-98). Library also has microfilm. Ann Arbor, Mich. : ProQuest Information and Learning Company, [2008]. 1 microfilm reel ; 35 mm. Online version available on the World Wide Web.

Thesis (Ph. D.)--University of Idaho, 2006. / Abstract. "August 2006." Includes bibliographical references. Also available online in PDF format.

Graduation date: 1994

In Oregon, sage grouse (Centrocercus urophasianus) were common in the eastern portion of the state. Since 1940 populations declined because of decreased productivity. The western subspecies (C. u. phaios) was listed as a candidate for threatened and endangered status in 1985 because of declines in Oregon and Washington and extirpation from British Columbia. Habitat availability and habitat condition were factors associated with impaired productivity. Stand structure and forb availability were characteristics most associated with habitat selection by hens with broods. The objectives of this study were to determine habitat use and selection by hens with broods and the relationship between food availability, habitat use by hens, and diets of juvenile sage grouse. Of the 2 study areas used, Hart Mountain had greater long term productivity and abundance than Jackass Creek. Use of cover types and habitat components were compared within and between study areas. In this study, sage grouse hens selected low sagebrush (Artemisia sp.) cover types during early brood-rearing then switched to use of big sagebrush cover types during late brood-rearing. In general, cover types used selectively had greater availability of forbs, and changes in forb availability within cover types from early to late brood-rearing corresponded to changes in cover type use. Differences in forb availability between study areas may have affected productivity. Hens at Jackass Creek selected sites with forb cover similar to that available to broods at Hart Mountain and home ranges were larger at Jackass Creek. Furthermore, diets of juvenile sage grouse were higher in forbs and insects at Hart Mountain. Larger home ranges and less nutritious diets were potentially responsible for lower productivity at Jackass Creek. Results indicated that management to improve brood habitat should focus on maintenance of cover type diversity and availability of forbs. / Graduation date: 1993

Thesis (M.S.)--Oregon State University, 2002. / Typescript (photocopy). Includes bibliographical references (leaves 38-45). Also available online.

Thesis (M.S.)--Oregon State University, 2009. / Printout. Includes bibliographical references (leaves 90-100). Also available on the World Wide Web.

Thesis (Ph. D.)--University of Wyoming, 2005. / Title from PDF title page (viewed on 10/26/2007). Includes bibliographical references.

Declining greater sage-grouse populations (Centrocercus urophasianus; hereafter sage-grouse) have led to increased concern regarding the long-term stability of the species. Previous research has identified factors contributing to the observed population declines. Habitat degradation and loss have been implicated as major factors in population declines. Although much is known about sage-grouse biology, more information is needed about population responses to specific management actions. This research was conducted to document sage-grouse responses to site-specific management actions. Additionally, I evaluated sage-grouse temporal and seasonal habitat-use and the comparability of techniques used by range and wildlife managers to measure vegetation responses of habitat management. Specifically, I evaluated 1) whether chemical analysis (gas chromatography) of sage-grouse fecal pellets could identify sagebrush species in sage-grouse winter diets, 2) the comparability of the line-point intercept and Daubenmire canopy cover methods for estimating canopy cover, 3) the response of sage-grouse broods to prescribed burns in a high elevation sagebrush community in northeastern Utah, and 4) the vegetation and insect characteristics of sites used by sage-grouse broods during a 24-hour period. I was able to determine wintering sage-grouse diets using gas chromatography by analyzing fecal pellets. This research also confirmed that black sagebrush (Artemisia nova) was an important component of sage-grouse winter diets in western Box Elder County and Parker Mountain populations. The line-point intercept and Daubenmire methods for estimating canopy cover are not comparable. Sage-grouse broods selected small (~ 25 ha) patchy prescribed burns in high elevation mountain big sagebrush (A. tridentata vaseyana) communities in northeastern Utah. Sage-grouse brood-site use in northwestern Utah did not differ during the diurnal hours, but nocturnal roost sites were characterized by shorter statured shrubs and more bare ground when compared to midday sites.

Thesis (MS)--University of Montana, 2010. / Contents viewed on February 8, 2010. Title from author supplied metadata. Includes bibliographical references.