Thesis (M.S.) in Forestry--University of Maine, 2004. / Includes vita. Includes bibliographical references (leaves 74-80).

Thesis (Ph. D.)--University of Washington, 1996. / Vita. Includes bibliographical references (leaves [202]-219).

Thesis (M.Sc. (Natural Resource Management))--Mahidol University, 2007. / LICL has E-Thesis 0022 ; please contact computer services.

Thesis (M.S.)--Oregon State University, 2004. / Printout. Includes bibliographical references (leaves 130-149). Also available on the World Wide Web.

Thesis (Ph. D.)--University of Wisconsin, 1966. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis (M.S.)--West Virginia University, 2000. / Title from document title page. Document formatted into pages; contains x, 128 p. : ill. (some col.), maps (some col.) Vita. Includes abstract. Includes bibliographical references (p. 116-121).

Thesis (Ph.D.) - University of Queensland, 2004. / Includes bibliography.

Thesis (Ph.D.) -- McMaster University, 2002. / Includes bibliographical references. Also available via World Wide Web.

I studied a population of Cooper's hawks (Accipiter cooperii) nesting in the metropolitan city of Tucson, Arizona, from 1994 to 1997. I identified 51 Cooper's hawk territories distributed across Tucson with pockets of nesting density as great as 1 pair/64.7 ha. Eucalyptus (Eucalyptus spp.) (70.8%), aleppo pine (Pinus halepensis ) (25.0%), and cottonwood trees (Populus fremontii) (4.2%) were used as nesting structures more frequently than expected based on availability. Nest trees were primarily located in residential yards (48.3%) and high-use recreational areas (28.3%). Nest sites had a greater basal area, canopy cover, stem density, and number of trees >10 m tall than random sites. I compared the breeding ecology of urban Cooper's hawks with those in exurban areas. Urban pairs tended to have larger clutches (urban x̄ = 3.64: exurban x̄ = 3.20) (P = 0.085) and more nestlings (urban x̄ = 3.11; exurban x̄ = 2.78) (P = 0.145) than exurban pairs. Nestling mortality, however, was greater among urban nests (51%) than exurban nests (5%). The primary cause of death among urban nestlings was trichomoniasis (80%), a disease caused by the parasitic protozoan Trichomonas gallinae ; the disease was not a mortality factor among exurban nests. Raptors develop the disease by eating infected prey. Doves (Columbidae) are hosts for the protozoan and accounted for 83% and 10% of the diet of urban and exurban Cooper's hawks, respectively. Breeding age Cooper's hawks were 99% free of infection independent of nesting area. Infection rates were greater among urban nestlings than exurban nestlings (P < 0.0001). Breeding urban Cooper's hawks have high probabilities of survival (0.792) and recapture (0.947), but the estimated juvenile survivorship is low (0.199). Age-specific fecundity and survival suggests the urban population is declining by 8% annually, but has the capacity to increase by at least 2% annually. Paradoxically, the population appears to be stable or increasing, probably due to immigration of Cooper's hawks from outside the study area. Population sinks in human altered landscapes have been described as "ecological traps" because animals are attracted to them but suffer from low productivity or high mortality once they are there. My results suggest Tucson may be an ecological trap for Cooper's hawks.

M.Ed. / Over a period of approximately one hundred years, the South African forestry industry has grown into one of great importance to the national economy with significant international interests. In order to produce a balance of economic efficiency, ecological sustainability and social empowerment to meet the needs of present and future generations, forest resources and associated lands need to be managed effectively. This research aims to investigate and identify trends in the development of sustainable forest management in the South African forest industry. A significant development in recent years has been the emergence of certification. This is intended to ensure sustainable forest management. Certification entails independent and ongoing assessment (auditing) of an organisation's forest management practices, to measure compliance against a range of nationally and internationally recognised social, economic and ecological standards Forestry workers remain largely uneducated and poorly paid and there has been a trend to employ contract labour over the past few years. This research aims to determine the level of environmental literacy of forest workers and to discover to what extent the workers are aware of the problems facing forestry. A combined qualitative and quantitative approach was adopted. The researcher engaged in qualitative observations and open-ended interviews with a number of informants. A quantitative questionnaire was distributed to a sample of forestry workers drawn from three groups. These comprised workers from Komatiland Forestry, Global Forest Products and a group of small independent contractors and sub-contractors. A total of 141 questionnaires were completed and analysed. The results indicated that while forestry practices were generally understood, and correct procedures were followed, a deeper understanding of environmental matters was superficial. The living standards of most of the respondents were found to be poor. This could negatively effect the implementation of sustainable forest development. This research combined a quantitative analysis of the responses to the questionnaire with a qualitative analysis of focused interviews and discussions with various stakeholders in the forestry industry. This provided a broader understanding of the trends in the industry. The forestry industry was found to be in a state of flux. Of the two large companies involved in the research, Global Forest Products had only recently been bought out from Mondi and Komatiland, a state owned forestry company was facing an uncertain future while undergoing the privatisation process. Conditions concerning the workers were generally found to be poor. This was largely due to the companies absolving themselves of social responsibilities. In order to produce a balance of economic efficiency, environmental sustainability and social empowerment a new vision for the forestry industry is needed. This requires the combined efforts of the government, the corporate sector as well as other role players such as labour unions, non-governmental institutions and the general public.