Index Catalog // ScholarsArchive@OSU

Influences of nitrogen on carbon dynamics in forest soil and density fractions

Creator:: Swanston, Christopher W.
Abstract:: Application of N fertilizer is a common forest management practice in the Pacific Northwest, yet the long-term influence of fertilization on forest soil properties is not well known. Although elevated N often increases mineralization of C and N from labile organic matter, negative effects have been documented in recalcitrant organic...
Resource Type:: Dissertation

Effect of thinning and fertilization on wood properties and intra-ring characteristics in young Douglas-fir

Creator:: Bodner, Josef
Abstract:: The purpose of this study was to determine if thinning, fertilization or a combination of thinning and fertilization had an effect on overall average specific gravity, modulus of elasticity, modulus of rupture, fiber length and intra-ring characteristics. Material for this experiment consisted of 7 trees randomly selected from each of...
Resource Type:: Masters Thesis
Full Text:: LITERATURE REVIEW 3 Effect of Thinning and Fertilization on Forest Stand 3 Yield and Growth Effect of

Pilot experiment of forest fertilization during an outbreak of the western spruce budworm in Northeastern Oregon

Creator:: Mason, Richard R., Wickman, B. E., Paul, H. G., and Torgersen, T. R.
Abstract:: Mixed-conifer stands of grand fir (Abies grandis (Dougl. ex D. Don) Lindl., Douglas-fir (Pseudotsuga menziesii var. glauca (Beissn.) Franco), and ponderosa pine (Pinus ponderosa Dougl. ex Laws.) were fertilized with nitrogen and combination treatments of nitrogen, phosphorus, potassium, and sulfur to test their effects on trees and associated insects during...
Resource Type:: Technical Report

Natural fertilization of a heavily thinned Douglas-fir stand by understory red alder

Creator:: Berg, Alan B., Doerksen, Allan, and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: RESEARCH NOTE No. 56 1975 School of Forestry Forest

Comparative effects of precommercial thinning, urea fertilizer, and red alder in a site 11, coast Douglas-fir plantation

Creator:: Miller, Richard E., Obermeyer, Edmund L., and Anderson, Harry William
Abstract:: The authors varied the number of red alder retained with 300 Douglas-fir per acre on a high-quality site in coastal Oregon. Alder densities of 0, 20, 40, and 80 per acre were tested. The authors' fifth treatment eliminated nitrogen-fixing alder, but substantial nitrogen fertilizer. Treatment 6 had neither thinning nor...
Resource Type:: Technical Report

Seedling survival, mycorrhiza development and rhizosphere biology of Pseudotsuga menziesii seedlings outplanted on a degraded forest site in southwestern Oregon

Creator:: Colinas, Carlos
Abstract:: Inoculation of planting holes with small amounts of soil from a mature forest and a plantation improved survival and growth of Pseudotsuga menziesii seedlings in a degraded clear-cut in southwestern Oregon. To determine the component(s) of the transferred soil responsible for survival and growth increases, we treated forest, plantation and...
Resource Type:: Dissertation

Decomposition and nitrogen dynamics of red alder and Douglas-fir leaf litter in Oregon Coast Range riparian forests

Creator:: Matkins, Joselin
Abstract:: I examined factors regulating decomposition rates of red alder (Alnus rubra)) and Douglas-fir (Pseudotsuga menziesii) leaf litter in Coast Range riparian areas in western Oregon. Overall, this study was designed to examine the influence that leaf litter quality characteristics and decomposition site treatment have on decomposition rates, to provide a...
Resource Type:: Masters Thesis
Full Text:: characterization of the 8 research sites .......... 108 2.2. Litterfall, forest floor, and soil characteristics

Belowground carbon storage and soil organic matter quality following fertilizer and herbicide applications in ponderosa pine plantations along a site-quality gradient in northern California

Creator:: McFarlane, Karis J., 1979-
Abstract:: Belowground carbon (C) storage and quality of soil organic matter (SOM) in forest soils have implications for sustainable forest management and C sequestration, but how these pools change in response to management is poorly understood. I investigated whether fertilization and competing vegetation control, applied alone or in combination early in...
Resource Type:: Dissertation
Full Text:: Forest Enfineering presented on July 27,2007. Title: Belowmound Carbon Storage and Soil Organic

The influence of contemporary forest management on stream nutrient concentrations in an industrialized forest in the Oregon Cascades

Creator:: Meininger, William Scott
Abstract:: The increased demand for wood and fiber from a continually shrinking land base has resulted in the use of intensively managed forest plantations. The concentration of timber production on the most suitable sites allows the world's demand for forest products to be met on less land and enable native forests...
Resource Type:: Masters Thesis
Full Text:: ABSTRACT OF THE THESIS OF William Scott Meininger for the degree of Master of Science in Forest

Compaction of forest soils

Creator:: Oregon State University. Extension Service, Washington State University. Cooperative Extension, University of Idaho. Cooperative Extension Service, Adams, Paul W., Froehlich, Henry A., and Pacific Northwest Cooperative Extension
Abstract:: Published December 1981. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Technical Report
Full Text:: operations. The use of machinery on the forest site, however, can significantly alter some important soil

Soil-site relationships in second growth Douglas-fir stands in the central Oregon coast range

Creator:: Urie, Dean Howard
Resource Type:: Masters Thesis
Full Text:: INVESTIGAI IONS Attempts to classify forest land according to produc- tivity by use of soil

A method of forest soil-site quality investigation

Creator:: Collins, Dana Huntley
Resource Type:: Masters Thesis

Hydrologic properties of soil and subsoil on a steep, forested slope

Creator:: Ranken, Darrel Wesley
Abstract:: The purpose of this study was to examine certain hydrologic properties of the soil and subsoil on a steep forested slope and relate these -rceTties to the movement of water via subsurface routes. The hydrologic properties examined were bulk density, soil texture, total porosity, pore size distribution, saturated hydraulic conductivity,...
Resource Type:: Masters Thesis

Amount and chemical composition of understory vegetation in Alsea basin forest communities

Creator:: Tarnócai, Charles
Abstract:: The understory vegetation was sampled in eight plant communities of a Douglas-fir ecosystem to determine the organic matter production and mineral composition. Four sample sites were selected in each plant community and the understory vegetation sampled using the method of quadrats of successively increasing size. All herbaceous plants were separated...
Resource Type:: Masters Thesis
Full Text:: group their components into a number of categories such as: soil, forest floor, understory, and

An inquiry into some of the relationships of soil and forest cover

Creator:: Howard, Elmon W.
Resource Type:: Undergraduate Thesis
Full Text:: RELATIONSHIPS OF SOIL AND FOREST COVER i>y ELMON W. HOWARD A THESIS submitted to the OREGON STATE COLLEGE

Slope stability on forest land

Creator:: Sidle, Roy C. and Pacific Northwest Cooperative Extension
Abstract:: Published August 1980. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Technical Report
Full Text:: slopes, their costs are prohibitive in some areas. Soil Creep Roadbuilding Constructing forest roads on

Maritime windstorm influence on soil process in a temperate rainforest

Creator:: Kramer, Marc G.
Abstract:: Maritime cyclonic windstorms cause widespread disturbance to forested ecosystems in southeast Alaska. The consequence of this disturbance process on the movement, storage, and quality of soil carbon, forest hydrology and streamwater chemistry was studied along a windthrow disturbance sequence. Soil profiles were described and the thickness of the major organic...
Resource Type:: Dissertation

Soil compaction on woodland properties [1991]

Creator:: Adams, Paul W.
Abstract:: Published January 1991. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Other
Full Text:: 'fóoa iandl5 N 141991 WorlçboolçeThTE LI3RNy Forest Protection P SoIl Compaction on Woodland

Soil compaction on woodland properties [1983]

Creator:: Adams, Paul W.
Abstract:: Published July 1983. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Other
Full Text:: can do to reduce compaction. What is soil compaction? A productive forest soil is a mixture of

Soil compaction on woodland properties

Creator:: Adams, Paul W. and Oregon State University. Extension Service
Abstract:: Revised November 1990. Reprinted March 1998. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Technical Report
Full Text:: . What is soil compaction? A productive forest soil is a mixture of mineral particles, plant and

Soil compaction on woodland properties

Creator:: Oregon State University. Extension Service and Adams, Paul W.
Abstract:: Soil compaction can happen whenever machinery, livestock, or people travel on the land. On woodlands, compaction is most likely to be caused by logging equipment such as crawler tractors and rubbertired skidders.
Resource Type:: Technical Report
Full Text:: , Oregon State University. What is soil compaction? A productive forest soil is a mixture of mineral

Effects of mulch and forest floor material on soil macro-nutrients in homogenized soil cores

Creator:: Newman, Joseph Paul
Abstract:: Effects of three mulches of tree foliage and twigs (red alder, Douglas-fir, and salal) and homogenized, partially decomposed material (forest floor) on soil macronutrients (Ca, K, Mg, P, NO3, and NH4) were evaluated in the summer of 1997. These effects were measured with buried, coated ion-exchange resin bags at two...
Resource Type:: Masters Thesis

First year development of three conifers on surface and exposed subsoil horizons

Creator:: Cochran, Patrick Holmes, 1937-
Resource Type:: Masters Thesis
Full Text:: ) reviewed sorne foreign papers on the relation of forest tree root developrnent to soil horl- zons. They

Analysis of variability of some forest soils in southwestern Oregon

Creator:: Wicherski, Bruce P.
Abstract:: The variability of selected physical, chemical, and morphological soil properties in two landtype mapping units on'the Rogue River National Forest in southwestern Oregon was studied. The objectives of the study were (i) to quantify soil variability in several soil resource inventory mapping units, (ii) to explore methods of describing soil...
Resource Type:: Masters Thesis
Full Text:: Soil Science presented on August 29, 1980 Title: Analysis of Variability of Some Forest Soils in

Engineering properties of Southeast Alaskan forest soils

Creator:: Filz, George
Abstract:: The strength of both undisturbed and compacted soils from 10 sites in the slide-prone Tongass National Forest in SE Alaska were studied. Index property tests were also conducted on disturbed samples. The index tests included natural water content, Atterberg Limits, specific gravity of solids, grain size distribution, and moisture-density relationship....
Resource Type:: Masters Thesis
Full Text:: obtained at each site. The surface layer of forest litter was removed, exposing the mineral soil. A

The nature of Fusarium exclusion from coniferous forest soils : evidence of differential microbial involvement in forest vs. nursery soils

Creator:: Schisler, David Albert
Resource Type:: Masters Thesis
Full Text:: of macroconidia added to soil determined that forest soils stimulate macroconidial germination (R

Factors affecting the inoculum potential of VA and ectomycorrhizal fungi in forest soils of southwest Oregon and northern California

Creator:: Parke, Jennifer Lee
Resource Type:: Dissertation
Full Text:: potential of VA and ectomycorrhizal fungi in forest soils is affected by logging disturbance, soil

Low molecular weight organic acids in forest soils

Creator:: Hayden, John
Abstract:: Two studies concerning low molecular weight organic acids in soils were conducted. In the first study, anion exclusion chromatography was used to separate and identify 12 common organic acids, and the accuracy, precision and detection limits of the method were determined. The method was found to be sensitive and accurate...
Resource Type:: Masters Thesis
Full Text:: second study, the reaction of a forest soil with oxalic acid at four concentrations was monitored for

Overland flow and sediment production potentials in logged and nonlogged sites of a ponderosa pine forest in northeastern Oregon

Creator:: Williams, John Dana
Abstract:: The purpose of this research was to determine if overland flow and sediment production were different in logged (on snow, frozen soil, and prescribed skid trails) and nonlogged sites in a Pinus ponderosa Laws.! Symohoricaroos albus Laws. community in the foothills of the Wallowa Mountains in northeastern Oregon. To determine...
Resource Type:: Masters Thesis
Full Text:: soil (Sartz 1953). 10 Forest Hydrological Systems Infiltration rates in forests are high because

The effect of logging and slash burning on certain physical properties of forest soils

Creator:: Dyrness, C. T.
Resource Type:: Masters Thesis

Carbon fluxes across three climatically-distinct forest chronosequences in Oregon

Creator:: Campbell, John
Abstract:: Biometric and gas exchange techniques were used to measure soil respiration (soil surface CO₂ efflux) and NEP (Net Ecosystem Production) across three climatically-distinct forest chronosequences in Oregon. Results indicate significant forest type, age, and forest type x age interaction effects on annual soil respiration. A regional age class distribution skewed...
Resource Type:: Dissertation

Soil physical properties and available water capacity of southwest Oregon forest soils

Creator:: Flint, Alan L.
Abstract:: Measurements for water retention calculations and physical characterization were made on skeletal and non-skeletal soils in southwest Oregon. A new bulk density sampler was designed for the physical characterization of the steep, skeletal soils commonly encountered in this area. The new sampler and the techniques required for the measurement and...
Resource Type:: Masters Thesis
Full Text:: Properties of southwest Oregon Forest Soils. 44 2 Correlation matrix for soil physical properties 46 and

An investigation of the influence of root reinforcements on soil strength and the initiation of static liquefaction in forest soils

Creator:: Smith, Russell S.
Abstract:: A study was conducted to investigate the influence of root reinforcements on soil strength and the initiation of static liquefaction in forest soils. The design and operation was developed of an apparatus capable of modeling rainfall-induced shallow hill-slope failures that also permitted observation of the soil volume change tendencies at...
Resource Type:: Masters Thesis
Full Text:: Influence of Root Reinforcements on Soil Strength and the Initiation of Static Liquefaction in Forest Soils

Biology and chemistry of a meadow-to-forest transition in the Central Oregon Cascades

Creator:: Heichen, Rachel S.
Abstract:: In this study, biological and chemical characteristics were determined for two high-elevation meadow-to-forest transitions located in the Central Oregon Cascades. The chloroform fumigation incubation method (CFIM) was used to determine microbial biomass C(MBC) and the N flush due to fumigation (NF), and meadow values were compared to forest values for...
Resource Type:: Masters Thesis
Full Text:: meadow and forest soils, respectively. Mean NF was estimated to be 37 and 56 tg N g soil in meadow and

Soluble carbon and respiration of forest humus

Creator:: Hu, Lily Jho-yuan
Abstract:: Humus is one of the important factors controlling the soil formation process. The nutrients released from it during the decomposition process also affect the growth and reproduction of the forest. The type of humus formed is influenced by the nature of the forest litter and the environment in which it...
Resource Type:: Masters Thesis
Full Text:: taking place in the soil. Forest soils are characterized by large amounts of organic matter decomposing

The correlation of soil acidity with site quality

Creator:: Pickup, Jack H.
Resource Type:: Undergraduate Thesis
Full Text:: . Soil Map, McDonald Forest and Peavy Arboretum (Section). 57 53a THE CORRELATION OF SOIL ACIDITY

Site quality and the pH factor

Creator:: Bond, F. Leroy
Resource Type:: Undergraduate Thesis
Full Text:: . As litter is constantly added to coniferous forest cover, soil acidity continues to increase as long

pH values on site I areas of the McDonald Forest

Creator:: Ellis, Ray F.
Resource Type:: Undergraduate Thesis
Full Text:: pH values on site I areas of the McDonald Forest e

The role of forestry in soil conservation

Creator:: Mueller, George T.
Resource Type:: Undergraduate Thesis
Full Text:: United States Forest Service, The total number producing this amount of trees was 79. Last year the soil

Erosion and forestry

Creator:: Burnett, George L.
Resource Type:: Undergraduate Thesis
Full Text:: Vegatative cover • 17 Type of soil 18 Disturbances of soil • • 19 FOREST COVER AND EROSION 20 Direct

Soil fungal hyphal dynamics and seasonal hypogeous sporocarp production in western Oregon Douglas-fir forests

Creator:: Hunt, Gary, 1945-
Abstract:: Total length and biomass of fungal mycelium in the soil of a young Douglas-fir stand in the central Oregon Coast Range were estimated over 27 months with the agar-film technique. In a second study, phenology and taxonomy of hypogeous (belowground) sporocarps were studied over 32 months in a nearby, young...
Resource Type:: Dissertation
Full Text:: Soil Fungal Hyphal Dynamics and Seasonal Hypogeous

Mycorrhiza formation and diversity in undisturbed forest and clearcut and burned areas in three forest types in Oregon

Creator:: Brainerd, Richard E.
Abstract:: A greenhouse bioassay was used to compare ectomycorrhiza formation and diversity in soils from undisturbed and clearcut and burned areas in moist mesic, moist montane and dry montane forest types representing a gradient of environmental harshness. It was hypothesized that mycorrhiza diversity decreases with increasing environmental harshness and that stability...
Resource Type:: Masters Thesis

Burning Douglas-fir slash : physical, chemical, and microbial effects in the soil

Creator:: Neal, John Lloyd, Wright, Ernest, 1899-, Bollen, Walter Beno, 1896-, and Oregon State University. Forest Research Laboratory
Resource Type:: Research Paper
Full Text:: over by a forest fire than in soil from un- burned areas, except in soil where slash was burned

Consolidation, compression, and shear strength of four western Oregon forest soils

Creator:: McNabb, David H.
Abstract:: Forest soils with low bulk densities are often considered less susceptible to compaction than soils with higher bulk densities. The objective of this study was to determine if soil strength controlled the compression of soils with low bulk density. Four soils were selected for this evaluation. Three of these were...
Resource Type:: Dissertation
Full Text:: . III. 1. Relationship between bulk density of a sample of western Oregon forest soil, predicted with

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:: Soil Carbon in Thinned and Unthinned Douglas-fir Forests 1.0 INTRODUCTION Intensive forest

Soil variability on steep, skeletal forested slopes of the Umpqua National Forest, Oregon

Creator:: Myhrum, Ronald P.
Abstract:: This study was undertaken to determine both the amount and the spatial variability of sand, silt, clay, and six fractions of coarse fragments in soils representing harsh sites for reforestation. Particle size data were collected because of their direct relationship to water holding capacity and the plantability and survivability of...
Resource Type:: Masters Thesis
Full Text:: Page 1 Coefficient of Variation of Soil Properties from Selected Forest Soil Research 7 2 Summary

Soil carbon and nutrient dynamics of windthrow chronosequences in spruce-hemlock forests of southern Alaska

Creator:: McClellan, Michael H.
Resource Type:: Dissertation

Dynamics of water-soluble carbon in forest soils of contrasting fertility

Creator:: Wagai, Rota
Abstract:: Most soil organic C is in a stable form, associated with clay minerals in the upper soil profile. Upon environmental and land-use changes, stable soil C is subject to losses, which influence the global C cycle and the productivity of terrestrial ecosystems. However, mechanisms controlling soil C destabilization are not...
Resource Type:: Masters Thesis

Restoring productivity of compacted forest soils with tillage

Creator:: Whitaker, Carol Anne
Abstract:: Tillage of forest soils compacted by ground-based logging systems is a practice that is becoming widely accepted in the Pacific Northwest. However, past research has failed to adequately define the conditions and specifications that particular tillage operations should meet in order to produce the maximum growth response from planted seedlings....
Resource Type:: Masters Thesis

Effect of thinning Douglas-fir on soil moisture, temperature and nitrogen relations

Creator:: André, Johnnie Edgar
Resource Type:: Masters Thesis
Full Text:: the Black Rock Forest .•...•........ 64 IX. Profile Description of Stump Farm Soil

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