Index Catalog // ScholarsArchive@OSU

Differential effect of solar radiation on seedling establishment under a forest stand

Creator:: Ruth, Robert H.
Abstract:: The differential effect of solar radiation on seedling establishment under a forest stand was studied to develop a basis for controlling species composition in the regenerating stand. The study was carried out on the Oregon Coast where current silvicultural practice is to clearcut mature stands and establish Sitka spruce (Picea...
Resource Type:: Dissertation

Effects of maternal age on reproductive success in black rockfish, Sebastes melanops

Creator:: Bobko, Stephen J.
Abstract:: From 1996 through 1998 I collected mature female black rockfish off Oregon and examined ovaries and otoliths to estimate weekly, age-specific larval production. In all reproductive seasons, older black rockfish extruded larvae earlier in the season, followed by progressively younger fish. Each year, beginning in May, I collected young-of-the-year (YOY)...
Resource Type:: Dissertation
Full Text:: . Markie Steven A. From 1996 through 1998 I collected mature female black rockfish off Oregon and

The use of burned forest by breeding birds following the Biscuit Fire in southwest Oregon

Creator:: Donaghy Cannon, Michelle M.
Abstract:: Fire severity is hypothesized as an important driver of bird responses to wildfire. For those species that typically respond negatively to increasing severity, Accessibility of high-severity burned forest may be dependent on the proximity of unburned or low-severity burned forest to meet all of the needs of breeding bird species...
Resource Type:: Dissertation
Full Text:: Forest 7 Ecosystems and Society assisted me in all facets of my work at Oregon State

Below ground biology of Botrychium pumicola (Ophioglossaceae)

Creator:: Camacho, Francisco J.
Resource Type:: Dissertation
Full Text:: rare fern, with extant populations in Klamath, Lake and Deschutes counties, ofcentral Oregon. It

Selected life history aspects and habitat use by Merriam's wild turkeys in Oregon

Creator:: Lutz, Robert Scott
Abstract:: Habitat use and reproductive success by Merriam's wild turkey (Meleagris gallopavo merriami) were studied in Wasco County, Oregon, during 1981-82. This low density turkey population selectively used forested cover types characterized by a variety of structural features, species, and age classes. They avoided monotypic forested cover types, used non-forested cover...
Resource Type:: Dissertation
Full Text:: Department of Fish and Wildlife and Mount Hood National Forest. Addtional support was provided by Oregon

Greater sage-grouse reproductive ecology : linkages among habitat resources, maternal nutrition, and chick survival

Creator:: Gregg, Michael A.
Abstract:: Greater sage-grouse (Centrocercus urophasianus) populations declined range wide during the past 50 years. Grouse populations were 2-3 times larger than the current population as recently as the early 1970's. In addition to habitat loss and fragmentation, declines were attributed habitat degradation that caused reduced productivity. Because chick survival remains the...
Resource Type:: Dissertation
Full Text:: reproduction, I hypothesized that successful sage-grouse reproduction was 1) indirectly related to habitat

Environmental impacts on native bumble bee pollinators in an agricultural landscape of western Oregon

Creator:: Skyrm, Kimberly M.
Abstract:: Bumble bees provide vital pollination services in both native and agricultural landscapes. However, in recent years, bumble bee populations have experienced global population declines. The primary causes of these declines have been attributed to the environmental impacts of pathogens, pesticide use and habitat fragmentation. While research has examined the impacts...
Resource Type:: Dissertation
Full Text:: Native Bumble Bee Pollinators in an Agricultural Landscape of Western Oregon. Abstract approved

Local weather, regional climate, and population dynamics of northern spotted owls in Washington and Oregon

Creator:: Glenn, Elizabeth M.
Abstract:: Since the early 1990s, declines in northern spotted owl (Strix occidentalis caurina) populations have been documented through extensive field surveys and range-wide demographic analyses. Although loss of late-successional forest has been credited as the primary cause for spotted owl population declines, environmental variation has also been shown to influence vital...
Resource Type:: Dissertation
Full Text:: examining effects of weather and climate on northern spotted owl reproduction on 4 study areas in Oregon

An economic analysis with emphasis on stochastic evaluation of the structural and marketing changes of the Oregon millwork industry

Creator:: Bandrowski, Stefan Stanislaw
Abstract:: Recently, the millwork industry in Oregon, an important consumer of pine lumber produced in this region, has undergone a series of changes which have seemingly affected its structure and marketing organization. The principal purpose of this study is to explain these changes in terms of economic analysis and to find...
Resource Type:: Dissertation

Evaluation of management alternatives for an undeveloped, forested area in Oregon's coast range

Creator:: Johnson, Kenneth Norman
Abstract:: One of the most vexing problems facing the United States Forest Service in Western Oregon concerns its management of undeveloped forested lands. Many of these areas contain highly productive timberland, and restriction of timber harvesting to preserve the land's primitive character can be very costly. Also there are conflicting pressures...
Resource Type:: Dissertation

ScholarsArchive@OSU

Differential effect of solar radiation on seedling establishment under a forest stand

Effects of maternal age on reproductive success in black rockfish, Sebastes melanops

The use of burned forest by breeding birds following the Biscuit Fire in southwest Oregon

Below ground biology of Botrychium pumicola (Ophioglossaceae)

Selected life history aspects and habitat use by Merriam's wild turkeys in Oregon

Greater sage-grouse reproductive ecology : linkages among habitat resources, maternal nutrition, and chick survival

Environmental impacts on native bumble bee pollinators in an agricultural landscape of western Oregon

Local weather, regional climate, and population dynamics of northern spotted owls in Washington and Oregon

An economic analysis with emphasis on stochastic evaluation of the structural and marketing changes of the Oregon millwork industry

Evaluation of management alternatives for an undeveloped, forested area in Oregon's coast range

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