Browsing Forestry by Issue Date
Now showing items 1-20 of 391
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A dynamic programming approach to optimizing stem conversion
(1980)The process of converting trees into roundwood logs is the first in a series of manufacturing steps that ultimately leads to a finished product such as plywood, lumber, or paper. Since each manufacturing step is dependent ... -
The Cascade red fox: distribution, morphology, zoogeoraphy and ecology
(1983)The indigenous Cascade red fox, Vulpes vulpes cascadensis, occupies the subalpine meadows and parklands near the Crest of the Cascade Mountains and the open forests on the eastern slope of the Cascades; they do not occur ... -
Biology and conservation of the endangered Hawaiian Dark-rumped Petrel (Pterodroma phaeopygia sandwichensis)
(1983)The Hawaiian Dark-rumped Petrel or 'Ua'u is an endangered gadfly petrel that nests in the Hawaiian Islands and ranges throughout the central Pacific. The species was once common in Hawaii, with large colonies located on ... -
Thinning even-aged Douglas-fir stands: effects of density and structure on stand volume growth
(1987)The usefulness of thinning studies in Douglas-fir stands has been limited by difficulties such as the long time period required, changing study objectives, and the limited scope of these studies. An approach is presented ... -
A revised sociology of leisure: the social relationships and network structures of leisure behaviors
(1988)Conventional wisdom in the sociology of leisure maintains that "leisure" is what people experience as a result of recreation participation. Missing from our understanding of leisure as a socially significant phenomena is ... -
Communicating the arcane: a conceptual framework for environmental interpretation
(1993)A conceptual framework is offered for research to advance the practice of environmental interpretation. The intent is to improve scientific understanding of interpreting, as a form of communication, by establishing a more ... -
Nitrogen and phosphorus availability, ecosystem processes and plant community dynamics in boreal wetland meadows
(1994)The effects of nitrogen (N) and phosphorus (P) availability on above-ground primary production and plant community dynamics in wetland "beaver" meadows were examined in Voyageurs National Park in northern Minnesota, USA. ... -
Habitat connectivity and spotted owl population dynamics
(1995)The ecological consequences of habitat fragmentation include the direct effects of habitat loss and the indirect effects of reduced inter-patch dispersal. I examine these consequences of habitat fragmentation through two ... -
Understanding place as a cultural system: implications of theory and method
(1996)This dissertation seeks to provide insight into the relationships between public philosophy and the theoretical and methodological implications of social inquiry; to increase understanding of what it means to conceive of ... -
Spatial and temporal variation in historical fire regimes of the Blue Mountains, Oregon and Washington: the influence of climate
(1997)To identify the influence of climate on spatial and temporal variation in fire, low- to high-severity fire regimes were reconstructed from tree-rings in the Blue Mountains. Fire recurrence, extent, severity and seasonality ... -
Life history and multivariate analyses of habitat selection patterns among small cetaceans in the central North Pacific Ocean
(1998)Habitat selection and life history patterns were compared among three species of small cetaceans in the central North Pacific Ocean: Dall's porpoise (Phocoenoides dalli), northern right whale dolphin (Lissodelphis borealis) ... -
Host selection behavior of the Douglas-fir pitch moth, Synanthedon novaroensis (Hy. Edwards) (Lepidoptera:Sesiidae), related to intermediate silvicultural activities
(1998)The Douglas-fir pitch moth (DFPM), Synanthedon novaroensis, is attracted to exudations of oleoresin and oviposits at wounds on the bole of host trees. Larvae then feed in subcortical regions of vigourously growing hosts. ... -
Modeling large-scale fire effects: concepts and applications
(1998)Climatic changes anticipated for the next century are expected to alter the effects of fire on large-scale vegetation patterns. It is unlikely that future interactions between fire and vegetation can be predicted from ... -
Rates and pathways of recovery for sediment supply and woody debris recruitment in northwestern Washington streams, and implications for salmonid habitat restoration
(1998)This dissertation describes a strategy for restoring watershed processes. The restoration strategy is driven by the recognition that (1) salmonids are adapted to local environmental conditions, and (2) spatial and temporal ... -
Simulation of bidirectional reflectance, modulation transfer, and spatial interaction for the probabilistic classification of Northwest forest structures using Landsat data
(1998)Satellite remote sensors sample the upwelling reflected radiance in the form of digital images. A hierarchical model linking several sub-models of the image acquisition process and the spatial interaction of the classes ... -
Wind stability of naturally regenerated and planted Douglas-fir stands in coastal Washington, Oregon, and British Columbia
(1998)Risk of wind damage is an important factor influencing forest management throughout the world. Managed forest landscapes of the coastal Pacific Northwest are undergoing a transition from dominance by naturally regenerated ...