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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Economic considerations in managing Oregon Rocky Mountain elk

Sandrey, Ronald Albert 27 October 1982 (has links)
The size of elk herds in Eastern Oregon has become a controversial issue. Trade-offs exist between the numbers of elk and domestic livestock on a given area of land, and also between elk and commercial timber harvesting policies. Disputes arise from differing views as to proper use of the natural resource base, specifically, public forested and grazing lands. Economic comparisons between elk and alternative uses of the land are complicated by the non-market nature of the elk resource, as this necessitates using a method to value the resource which may not be familiar to many decision makers. The objectives of this thesis were: (1) to analyze the demand for antlerless elk tags in eastern Oregon and to use the analysis to examine alternative pricing policies for allocating these antlerless tags, (2) to evaluate alternative elk management strategies from an economic perspective, and (3) to optimize societal benefits from the land base over time. Objective (1) was met by using the travel cost method. Results indicate that state hunting revenues would rise substantially if tag prices were increased so as to equilibrate quantities demanded and supplied. Objective (2) was met by using a computer simulation model to ascertain the impacts of harvesting and management policies upon the herd's stability and productivity. The results, placing emphasis on the antlerless animals, indicate that a slight reduction in current herd levels is economically desirable. This result is caused in part by the decreasing returns to scale from the elk herd as measured by total harvest per 1000 summer adult elk. Limitations of these conclusions with respect to bull elk demand are documented. Finally, objective (3) is met by formulating the dynamic relationships between elk, domestic livestock, and timber as a system of dynamic Lagrangian multipliers. This allows optimal inter-temporal allocation of resources by discounting future returns from these resources and equating marginal benefits of present and future use. The decision rules are examined, and economic implications of the multipliers are discussed. Although a theoretical model, some data is discussed, as are directions for future research. / Graduation date: 1983
12

A study of the history of the Rocky Mountain House area /

Gish, Elmer Samuel. January 1952 (has links)
Thesis (M.A.)--University of Alberta, 1952. / Includes bibliographical references (leaves 167-170). Also available online as part of: Our roots/Nos Racines.
13

Some preliminary studies of Rocky Mountain spotted fever vectors in Utah

Coffey, Marvin Dale 01 August 1953 (has links)
That the tick, Dermacentor andersoni Stiles, was the vehicle of transmission for the disease Rocky Mountain spotted fever was first suggested by Wilson and Chowning (1902). The disease itself has been recognized since 1873, being first known from the Bitter Root Valley of Montana. The first medical record, however, was reported from Idaho by Wood (1896).
14

Pathogenesis of Rocky Mountain spotted fever in Rhesus monkeys following respiratory exposure /

Wolf, George Leopold January 1965 (has links)
No description available.
15

The effects of prescribed burning on deer and elk habitat parameters in Montana's Missouri River Breaks

Wood, Christopher Karl. January 2004 (has links) (PDF)
Thesis (M.S.)--Montana State University--Bozeman, 2004. / Typescript. Chairperson, Graduate Committee: Clayton B. Marlow. Includes bibliographical references (p. 49-53).
16

An Evaluating of the College Football Show Band with Particular Reference to the Institutions of Higher Learning in the Rocky Mountain Area

Andersen, Grant F. 01 May 1954 (has links)
This research study and evaluation is based on educational philosophy that acknowledges the values of music education in the institutions of higher learning in the United States, also the place of instrumental music as a part of the music education program. There is, however, a feeling of controversy over the values and place of the football show band within the instrumental music program. In the Rocky Mountain area, every college and university has a football show band. To many administrators and music educators, including band directors, it may seem that the importance of the show band has been exaggerated, and the band itself oversold. The show band, however, appears to be a part of the music program and on a permanent basis. Therefore, it seemed desirable that a study be made to evaluate the show band from a musical and an educational standpoint as it function a within the music program.
17

Quality of bluebunch wheatgrass (Agropyron spicatum) as a winter range forage for Rocky Mountain Elk (Cervus elaphus nelsoni) in the Blue Mountains of Oregon

Bryant, Larry Duane 07 May 1993 (has links)
This research was conducted on three study areas on elk winter ranges in Northeast Oregon. One was on the Starkey Experimental Forest and Range and the others were in the same vicinity. Plant appendages, spring and fall defoliation and fall growth of bluebunch wheatgrass were evaluated in terms of quality of nutrient content during September through April of 1986-87 and 1987-88. Four treatments were applied. Plants were clipped to a 2.5 cm and 7.6 cm stubble height in the spring before the boot stage of phenological development; plants were clipped to a 7.6 cm stubble height in the fall after plant maturity in September; plants were not clipped during the year. Percent crude protein, dry matter digestibility (DMD), acid detergent fiber (ADF), and lignin were evaluated monthly. Samples from the four treatments were also analyzed from October to April to determine monthly changes in nutrient contents. Production of growth from all treatments was measured in October and March each year. Leaf material had higher percent crude protein and DMD, with lower percent ADF and lignin than the inflorescence and culm. The third leaf (the youngest plant material) had the highest nutrient value of all appendages. The culm and inflorescence values were not statistically different. Growth following spring defoliation treatments produced higher percent crude protein and DMD (P<.05), with a lower percent ADF and lignin than non-treated plants in both years. This was particularly pronounced during 1986 when precipitation in late summer initiated fall growth. Growth following spring defoliation and bluebunch wheatgrass not defoliated did not produce crude protein or DMD values sufficient to meet minimum dietary maintenance requirements for elk. Fall precipitation adequate to promote fall growth occurred only in 1986. Growth after fall defoliation had the highest percent crude protein and DMD with the lowest ADF and lignin values of all vegetation sampled. However, without 3-5 cm of late summer/early fall rains, fall growth does not occur. This happened in 1987. When growth does occur in fall the quality of the growth exceeds the minimum dietary maintenance requirements for elk. Freezing and thawing of fall growth plant material had minimal effect on forage quality. There were differences (P<.05) between the monthly values for percent crude protein and ADF starting in October and ending in April. However, the percent DMD and lignin from October to April were not different (P<.05). / Graduation date: 1993
18

Rocky Mountain National Park history and meanings as constraints to African-American park visitation /

Erickson, Elizabeth B. January 2001 (has links)
Thesis (Ph. D.)--West Virginia University, 2001. / Title from document title page. Document formatted into pages; contains xii, 185 p. : ill. Vita. Includes abstract. Includes bibliographical references (p. 156-167).
19

THE TAXONOMY AND EPIDEMIOLOGY OF DWARF MISTLETOES PARASITIZING WHITE PINES IN ARIZONA

Mathiasen, Robert L. January 1977 (has links)
No description available.
20

Effects of spatial heterogeneity on species richness methods to quantify spatial heterogeneity and the effects of spatial scale

Kumar, Sunil January 2007 (has links)
Zugl.: Fort Collins, Colorado State Univ., Diss., 2007

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