Index Catalog // ScholarsArchive@OSU

Four centuries of soil carbon and nitrogen change after severe fire in a Western Cascades forest landscape

Creator:: Giesen, Thomas William
Abstract:: Fire is a major disturbance process in many forests. Long-term studies of the biogeochemical effects of fires, especially on soils, are very rare. Consequently, long-term effects of fire on soils are often hypothesized from short-term effects. In a chronosequence study, I studied 24 western Cascades (Oregon) forest stands thought to...
Resource Type:: Masters Thesis
Full Text:: mineral soil than old stands. I found that forest floor N pools of old sites (average = 1,823 kg/ha

The link between nitrogen cycling and soil microbial community composition in forest soils of western Oregon

Creator:: Boyle, Stephanie A.
Abstract:: The objectives of this thesis were to examine the links between soil microbial community composition and function using the nitrogen (N) cycle as a model for these interactions and to assess the impact of environmental factors such as microclimate, vegetation type, and nutrient availability on microbial diversity and N transformations...
Resource Type:: Dissertation
Full Text:: reciprocal transfers of soil between adjacent coniferous forest and meadow vegetation in the Cascade

Management experiments for high-elevation agroforestry systems jointly producing matsutake mushrooms and high-quality timber in the Cascade Range of southern Oregon

Creator:: Weigand, James F.
Abstract:: Experimental prescriptions compare agroforestry systems designed to increase financial returns from high-elevation stands in the southern Oregon Cascade Range. The prescriptions emphasize alternative approaches for joint production of North American matsutake mushrooms (also known as North American pine mushrooms; Tricholoma magnivelare) and high-quality timber. Other agroforestry byproducts from the system...
Resource Type:: Technical Report

Relation of biologically defined environmental measurements to distribution and productivity of forest ecosystems in the central Oregon Cascades

Creator:: Zobel, Donald B., U.S. International Biological Program. Coniferous Forest Biome, and University of Washington
Resource Type:: Technical Report
Full Text:: VIRO .'IENTAL '1FASUPENE'TS TO DISTRIBUTION .AND PRODUCTIVITY OF FOREST ECOSYSTEMS IN THE CENTRAL

Soil and hydrologic factors affecting the stability of natural slopes in the Oregon Coast Range

Creator:: Harr, R. Dennis (Robert Dennis), 1941- and Yee, Carlton S.
Abstract:: The work upon which this publication is based was supported by funds provided by the United States Department of the Interior, Office of Water Research and Technology, as authorized under the Water Resources Research Act of 1964 and by the United States Department of Agriculture, Forest Service, Pacific Northwest Forest...
Resource Type:: Technical Report
Full Text:: COAST RANGE by R. Dennis Harr and Carlton S . Ye e Department of Forest Engineerin g Oregon State

Tree species-soils relationships in old-growth forests of the Oregon Coast Range

Creator:: Cross, Alison
Abstract:: Tree species directly and indirectly affect soil nutrient cycles. I sought to characterize soils and foliage associated with four common canopy tree species (Douglas-fir, western hemlock, western redcedar, and bigleaf maple) in mixed-species old-growth forests of the Oregon Coast Range and to determine whether and how soils differ among the...
Resource Type:: Masters Thesis
Full Text:: availability have implications for future forest and stream productivity. Species-specific data on soil

Effects of wildfire burn severity on soil microbial communitiesand invasive plant species in the Cascade Range of Oregon

Creator:: Hebel, Cassie L.
Abstract:: Fire suppression in the last several decades has resulted in unprecedented accumulations of organic matter on the landscape, leading to an increase in large, intense wildfires. This study investigated the soil microbial community (using phospholipid fatty acid analysis) across recently burned forests on the eastern slope of the Cascade Range...
Resource Type:: Masters Thesis
Full Text:: SEVERITY ON SOIL MICROBIAL COMMUNITIES AND INVASIVE PLANT SPECIES AFTER WILDFIRE IN THE CASCADE RANGE OF

Non-linear nitrogen dynamics and calcium depletion along a temperate forest soil nitrogen gradient

Creator:: Sinkhorn, Emily R.
Abstract:: Understanding how N availability influences base cation stores is critical for long-term ecosystem sustainability. Indices of nitrogen (N) availability and the distribution of nutrients in plant biomass, soil, and soil water were examined across ten young, unpolluted Douglas-fir (Pseudotsuga menziesii) stands in the Oregon Coast Range spanning a three-fold soil...
Resource Type:: Masters Thesis
Full Text:: Forest Soil Nitrogen Gradient. Abstract approved

Remote sensing of forest aboveground biomass using the Geoscience Laser Altimeter System

Creator:: Pflugmacher, Dirk
Abstract:: Accurate estimates of forest aboveground biomass are needed to reduce uncertainties in the terrestrial carbon flux. The Geoscience Laser Altimeter System (GLAS) onboard the Ice, Cloud and land Elevation Satellite is now the first spaceborne lidar sensor that will provide global estimates of vegetation height. This study investigated the utility...
Resource Type:: Masters Thesis
Full Text:: . Frequency distributions for forest height in the Cascade and Appalachian study region

Fire severity and vegetation response to fire in riparian areas of the Biscuit and B&B Complex Fires, Oregon

Creator:: Halofsky, Jessica E.
Abstract:: Fire is the dominant disturbance process in western U.S. forests, and although effects of fire in upland forests are relatively well-studied, there is little information about fire effects on riparian forests, critical areas of the landscape for both habitat and water quality. This dissertation examines different aspects of fire effects...
Resource Type:: Dissertation
Full Text:: Oregon, the Biscuit Fire in southwestern Oregon and the B&B Complex Fire in the Cascade Mountain Range

ScholarsArchive@OSU

Four centuries of soil carbon and nitrogen change after severe fire in a Western Cascades forest landscape

The link between nitrogen cycling and soil microbial community composition in forest soils of western Oregon

Management experiments for high-elevation agroforestry systems jointly producing matsutake mushrooms and high-quality timber in the Cascade Range of southern Oregon

Relation of biologically defined environmental measurements to distribution and productivity of forest ecosystems in the central Oregon Cascades

Soil and hydrologic factors affecting the stability of natural slopes in the Oregon Coast Range

Tree species-soils relationships in old-growth forests of the Oregon Coast Range

Effects of wildfire burn severity on soil microbial communitiesand invasive plant species in the Cascade Range of Oregon

Non-linear nitrogen dynamics and calcium depletion along a temperate forest soil nitrogen gradient

Remote sensing of forest aboveground biomass using the Geoscience Laser Altimeter System

Fire severity and vegetation response to fire in riparian areas of the Biscuit and B&B Complex Fires, Oregon

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