Index Catalog // ScholarsArchive@OSU

Citizen perspectives on hazardous fuel reduction in the Blue Mountains : findings and implications from panel research

Creator:: Toman, Eric Lee
Abstract:: Forests in the Blue Mountains region of eastern Oregon and Washington are facing a large-scale forest health crisis. Poor forest conditions have greatly increased the risk of catastrophic wildfire. Resource managers in the Wallowa-Whitman, Umatilla, and Malheur National Forests are utilizing prescribed fire and mechanized thinning treatments to reduce hazardous...
Resource Type:: Masters Thesis
Full Text:: people's 22 daily lives (Cortner et al. 1998), and when information about management options is

Thinning effects on stand and tree growth : different perspectives on same old questions

Creator:: Romero Castaño, Pablo
Abstract:: The search for the stand density that optimizes growth and hence generates the maximum amount of wood is one of the philosopher’s stone in modern forestry. Since scientific methods were applied to forestry, numerous generations of foresters have studied the relations between stocking density and growth, obtaining diverse results and...
Resource Type:: Masters Thesis
Full Text:: %), increased the growth performance in mid-sized trees (next largest 22% by diameter), and reduced initially

Characteristics of forests at spotted owl nest sites in the Pacific Northwest

Creator:: Hershey, Kit
Abstract:: This study describes the composition and structure of forests within the immediate vicinity of Northern spotted owl (Strix occidentalis caurina) nest sites in the Klamath, Coast, and Cascade provinces of western Oregon and the Olympic province, Washington. I compared forest stand data collected at 105 nest sites with data from...
Resource Type:: Masters Thesis
Full Text:: special thanks to Eric Forsman and his PNW crews: Ivy Otto, Rich Lowell, Pete Loschl, Janice Reid, and

Similarities in understory vegetation composition between unthinned, thinned and old-growth Douglas fir stands in western Oregon

Creator:: Mayrsohn, Cheryl
Abstract:: Forest stands were studied to determine if old-growth forest structure could be mimicked in younger stands via overstory manipulation. Cover and species composition of understory plants were systematically sampled in sixteen thinned second-growth stands and sixteen adjacent unthinned second-growth Douglas fir (Pseudotsuga menziesii (Mirabel) Franco.) stands. The stands were thinned...
Resource Type:: Masters Thesis
Full Text:: collected at each site, weather data from nearby U.S. 22 Weather service remote weather stations was

Influence of cattle grazing and forage seeding on establishment of conifers in southwest Oregon

Creator:: Alejandro-Castro, Mabel
Abstract:: The ability of controlled livestock grazing, in combination with seeding of palatable forages, to reduce understory competition and enhance conifer establishment, was evaluated during 1985 and 1986, on two adjacent sites in southwestern Oregon. In 1984, Site 1 was clearcut and broadcast burned to remove slash, and Site 2 was...
Resource Type:: Masters Thesis
Full Text:: and away from the 22 trees, resulting in higher and more uniform utilization. Second, seeded

Stand level silvicultural optimization utilizing a late-seral index constraint

Creator:: Semeliss, Wade Alan
Abstract:: A dynamic programming algorithm (MS PATH) was used to develop a stand level optimization model, FPS Optimizer. The model incorporates a late-seral constraint on the profit maximizing objective function utilizing a four-descriptor structural index as a proxy. This index, the 'Old-Growth Index', rates the late-seral structural quality of a given...
Resource Type:: Masters Thesis
Full Text:: ) ..................................................... 22 2.5. FPS Optimizer Model User Interface (2

Conifer regeneration, understory vegetation and artificially topped conifer responses to alternative silvicultural treatments

Creator:: Huff, Tristan
Abstract:: Historically, between 40-60% of the Coast Range of Oregon was comprised of structurally diverse, old forests initiated by disturbances of various spatial scales ranging from thousands of acres (large fires) to the size of a single tree (windthrow). The predominant regeneration method of the past several decades, however, has been...
Resource Type:: Masters Thesis

Influence of light on the growth of advance regeneration in the understory of Douglas-fir dominated forests in western Oregon

Creator:: Deisenhofer, Florian
Abstract:: The growth potential of Douglas-fir, grand fir and western hemlock advance regeneration in the forest understory of Douglas-fir-dominated forests was investigated to detennine the feasibility of selection cutting systems in northwest Oregon. This study compared the growth of Douglas-fir, grand fir and western hemlock advance regeneration along a light gradient...
Resource Type:: Masters Thesis
Full Text:: ..................................................................................................... 22 Hemispherical photograph with competing vegetation (left) and percent diffuse skylight of 11

Correlation between structural heterogeneity and arthropod biodiversity : implications for management of Pacific Northwest forests

Creator:: Madson, Stephanie Lee
Abstract:: The "old-growth controversy" in the Pacific Northwest recognized thinning as the primary silvicultural practice for land managers to produce wildlife habitat while continuing to produce timber. For the foreseeable future, forest stands will be harvested to produce forest gaps and a patchwork of trees of different ages. In order to...
Resource Type:: Masters Thesis
Full Text:: Creek 23 18 5 22 0.35 215 0.1 35 0.6 37 Marten Ridge 17 10 7 41 0.56 1219 0.3 81 1.7 0 Eagle's Rest 96

Understory vegetation effects on soil nitrogen and soil carbon in thinned and unthinned Douglas-fir forests

Creator:: Geyer, Eric A.
Abstract:: The optimum goal of forest management is to foster long-term productivity and ecological integrity while maintaining or increasing short-term growth and yield through sustainable practices. Understory vegetation plays a definite role in forest functions through nutrient cycling and habitat provisions. The objective of this study was to determine how salal,...
Resource Type:: Masters Thesis
Full Text:: One: Thinned/ Unthinned Comparison .............................. 22 4.3 Objective Two: Three

ScholarsArchive@OSU

Citizen perspectives on hazardous fuel reduction in the Blue Mountains : findings and implications from panel research

Thinning effects on stand and tree growth : different perspectives on same old questions

Characteristics of forests at spotted owl nest sites in the Pacific Northwest

Similarities in understory vegetation composition between unthinned, thinned and old-growth Douglas fir stands in western Oregon

Influence of cattle grazing and forage seeding on establishment of conifers in southwest Oregon

Stand level silvicultural optimization utilizing a late-seral index constraint

Conifer regeneration, understory vegetation and artificially topped conifer responses to alternative silvicultural treatments

Influence of light on the growth of advance regeneration in the understory of Douglas-fir dominated forests in western Oregon

Correlation between structural heterogeneity and arthropod biodiversity : implications for management of Pacific Northwest forests

Understory vegetation effects on soil nitrogen and soil carbon in thinned and unthinned Douglas-fir forests

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