The primary objective of this study was to develop a prediction system for the occurrence of law violations on the Ogden Ranger District, Weber County, Cache National Forest, Utah, whereby the existing manpower and equipment may be used as effectively as possible. In an attempt to develop the prediction system, 13 variables were chosen that were felt to be related to the occurrence of law violations. These variables consisted on nine weather variables and four use related variables, Of the original 13 variables, 12 variables were significant. The most significant variables that accounted for the greatest portion of the variability of the occurrence of law violations were directly related to the level of use. The prediction system developed in this study is not a usable tool for the resource managers of the Ogden Ranger District because it accounted for little more than chance alone.

No description available.

No description available.

Thesis (Ph. D.)--West Virginia University, 1999. / Title from document title page. Document formatted into pages; contains xi, 149 p. : ill. (some col.), map. Vita. Includes abstract. Includes bibliographical references.

The Monte Cristo area of the Cache National Forest has consistently supported a heavy pocket gopher infestation for many years. In 1957, and several succeeding years, infested range was treated with poisoned grain for pocket gopher control. Nearby range (also infested) was no t treated. Thus, gopher- control l ed range became available for comparative study, with period s of successive annual control of 1, 2, 3, 4, and 5 years. Within each of these areas (designated as treatments) were located two study s ites in 1961 and three in 1962. Within each study site were three sample areas, and just out side each study site were two trap blocks. Half-acre trap blocks were saturated with snap t raps for 3- consecutive days to give a 3-day population index ; this was converted to population per acre by treatments for use with regression analysis. Mound and cast counts, which have been widely used as indicators of there lative abundance of gophers were made on the 1-acre sample areas of ea ch treatment. Within these sample areas line -plot transects were used to obtain in format ion on perennial plant numbers and y i e ld, annual plant abundance, and "bulbed plant" abundance.

No description available.

No description available.

Residential non-industrial private forest (NIPF) owners within the Wildland/Urban interface are an increasingly important forest owner demographic. An increase in rural residential land use is fragmenting historically large contiguous forestlands. Consequently resource management has become decentralized. NIPF-landowners, as the new land managers, must now be capable of creating resilient forest ecosystems at the landscape scale. To overcome this issue landowners and resource managers at all levels of decision-making (including landowners) must come to understand how social structures such as psychology, organizations, institutions, and culture are linked to behavior and the physical world. Collaborative Interface Modeling (CIM) has been created in response to an information gap that exists between the social and natural sciences at the site scale. CIM reveals the causal linkages between land use decisions and their effects allowing landowners to more closely trace and investigate their management policies, behaviors, and feelings as well as the consequences of those behaviors. A demonstration of the CIM process with residential forest landowners is conducted to evaluate the process and detect possible implications of encroaching development on the Jefferson National Forest in Montgomery County, Virginia. A focus on fuel wood collection was established because it has been noted as a potential source of negative impact. Possible implications and improvements to the CIM process are also noted. / Master of Landscape Architecture

Group selection has recently emerged as an alternative silvicultural system to clearcutting in Appalachian hardwood forests, but there is little, if any, information on the effects of group selection on wildlife. Thus, I studied and compared the effects of group selection and clearcut openings on wildlife in the Jefferson National Forest, Virginia. Breeding birds were censused 1 year before and 2 years after harvesting at 20 group selection openings, 4 clearcut openings, 18 sites in the mature even-aged forest adjacent to the openings, and 29 control sites. I also compared use of group selection openings and clearcut openings by white-tailed deer. The number of species and the total number of birds decreased at the openings and in the forest adjacent to the openings after harvesting with both methods. (Seven species increased and 9 species decreased in the openings after harvesting. Four species decreased in the forest adjacent to the openings after harvesting. Indigo buntings and rufous-sided towhees increased more at the interior of clearcut openings than at the edge of clearcut openings or in group selection openings. Sites within the clearcut openings where groups of trees were left uncut were not used more by birds than clearcut sites without trees. (The number and proportion of stumps with sprouts browsed by white-tailed deer was greater in group selection openings than in clearcut openings. Clearcut and large group selection openings provided breeding habitat for the same bird species. The smaller group selection openings were not used by some species found in the clearcut openings. However, creating a variety of opening sizes probably will provide the maximum benefit for all wildlife species that use early successional habitat. The same species were negatively affected, and to a similar degree, by group selection and clearcut openings. Both types of openings had negative impacts on forest-interior bird species in the adjacent forest. However, if the same acreage is harvested, group selection will affect a greater area of adjacent forest than clearcutting, because smaller openings have greater edge to area ratios. / Ph. D.

Tower Mountain Caldera is the main feature of an Oligocene volcanic field located in the Umatilla National Forest, eastern Oregon. It is perfectly suited to investigate models of rhyolite petrogenesis as all of the important rock components for evaluating generation models are present in a single location and thus are presumably related; basalts, intermediate igneous rocks (which consist of older plutons and younger volcanic rocks, which are ~coeval with rhyolites), metamorphic basement rocks of significant grade, and rhyolites of varying composition. The formation of the caldera produced the Dale Tuff, which comprises the intra-caldera and outflow facies. 40Ar/39Ar dating places the age of the tuff at 32.66 ± 0.36 Ma. Post-caldera rhyolites erupted along apparent ring fractures and elsewhere. Radiometric U-Pb dating of zircons from three of these rhyolites yielded ages of 32.167 ± 0.020 Ma (#CH07a), 31.798 ± 0.012 Ma (#TM5), and 31.426 ± 0.016 Ma (#CH08a). All rhyolites at Tower Mountain range from low to high silica varieties. Some of the post-caldera rhyolites are chemically similar to the Dale Tuff, such as sample CH07a, and have compositions typical of rhyolites of calc-alkaline volcanic centers (I-type rhyolites), while others are similar to A-type rhyolites (CH08a and TM5). The ages indicate that the calc-alkaline rhyolites were followed by the A-type rhyolites. The petrogenetic relationships between the various rocks types were evaluated. Partial melt modeling based on experimental melts produced from crustal material indicates that batch partial melting of metamorphosed high silica crustal material modified by the addition of more primitive mafic material by assimilation/contamination is the most likely source for the Tower Mountain rhyolites.