Index Catalog // ScholarsArchive@OSU

Influences of riparian canopy on aquatic communities in high desert streams of eastern Oregon

Creator:: Tait, Cynthia K.
Abstract:: Because riparian canopy controls most energy inputs to stream ecosystems, it directly affects the structure of aquatic food webs and the ecological processes that govern interactions among trophic levels. This study addresses the interdependence among riparian canopy, benthic community structure, and the carrying capacity of high desert streams for salmonid...
Resource Type:: Dissertation
Full Text:: Riparian Canopy on Aquatic Communities in High Desert Streams of Eastern Oregon. Abstract approved

Understory herb and shrub responses to root trenching, pre-commercial thinning, and canopy closure in Douglas-fir forest of the western Cascades, Oregon

Creator:: Lindh, Briana C.
Abstract:: This thesis examines factors limiting understory herb presence and flowering in young second-growth Douglas-fir (Pseudotsuga menziesii) forests on the west side of the Cascade Mountains, Oregon, USA. I studied the belowground effects of canopy trees on understory herbs and shrubs in old-growth forests using trenched plots from which tree roots...
Resource Type:: Dissertation
Full Text:: gaps had about 30 percentage points higher plant cover than trenched plots under closed canopy

Understanding changes in forest cover and carbon storage in early successional forests of the Pacific Northwest using USDA Forest Service FIA and multi-temporal Landsat data

Creator:: Schroeder, Todd A.
Abstract:: To effectively study dynamic processes like forest succession over long time periods one must effectively integrate data collected at many different times, locations and spatial scales. The purpose of this research is to integrate forest inventory data collected by the USDA Forest Service’s Forest Inventory and Analysis (FIA) Program with...
Resource Type:: Dissertation
Full Text:: successional forest regrowth patterns and carbon storage in western Oregon forests. To detect and

Regeneration and growth of several canopy tree species in the Maya Forest of Quintana Roo, Mexico : the role of competition and microhabitat conditions

Creator:: Sorensen, NaDene S.
Abstract:: We evaluated the regeneration behavior and early growth rates of 10 non-pioneer canopy tree species in medium-height, semi-evergreen dry tropical forest in Quintana Roo, Mexico. These species provide timber and non-timber forest products for local communities and include evergreen and deciduous species with varied dispersal mechanisms. The species were Coccoloba...
Resource Type:: Dissertation
Full Text:: Regeneration and Growth of Several Canopy Tree Species in

Vegetation changes of communities containing medusahead (Taeniatherum asperum (Sim.) Nevski) following herbicide, grazing, and mowing treatments

Creator:: Turner, Robert Bruce
Abstract:: Studies were conducted from 1962 to 1966 to investigate the effectiveness of several practices in manipulating medusahead (Taeniatherum asperum (Sim. ) Nevski) infested and/or dominated ecosystems by releasing competition in favor of perennial grasses. Several herbicide treatments were evaluated for selective control of medusahead and cheatgrass (Bromus tectorum L. )...
Resource Type:: Dissertation
Full Text:: River hills of eastern Oregon. On foothill range in western Oregon, sheep grazing and mow- ing

The influence of canopy structure and epiphytes on the hydrology of Douglas-fir forests

Creator:: Pypker, Thomas G.
Abstract:: Canopy structure has a significant impact on the canopy hydrology of Douglas-fir forests in the Pacific Northwest (PNW). Whole canopy rainfall interception was measured for young Douglas-fir forest and compared to an old-growth Douglas-fir forest. The old-growth forest had significantly greater canopy water storage capacity (5) and direct throughfall fraction...
Resource Type:: Dissertation
Full Text:: permitted the measurement of the water fluxes above a plant canopy (e.g. aerodynamic method, Bowen Ratio

Some factors affecting the establishment and growth of improved forage species on Laughlin-like soils in western Oregon

Creator:: Valassis, Vlassios Thomas
Resource Type:: Dissertation
Full Text:: improved forage species on Laughlin-like soils in Western Oregon SOME FACTORS A'FECTING THE ESTABLISHMENT

The location, composition, and structure of old-growth forests of the Oregon coast range

Creator:: Juday, Glenn Patrick
Resource Type:: Dissertation
Full Text:: forests of the Oregon coast range AN ABSTRACT OF THE THESIS OF Glenn Patrick Juday for the degree of

Ecological relationships among feral horses, cattle, and pronghorn in southeastern Oregon

Creator:: McInnis, Michael Lindsay
Resource Type:: Dissertation
Full Text:: 8.3°/a winter) to 25.O (spring). Seven of the 1k plant communities described comprised more than 95

Regional gradient analysis and spatial pattern of woody plant communities in Oregon

Creator:: Ohmann, Janet L.
Abstract:: Knowledge of regional-scale patterns of plant community structure and controlling factors is largely qualitative and based on numerous local studies. Data from a subsample of 10,000 field plots were used to quantify and map compositional gradients of woody plant communities across Oregon forests. Canonical correspondence analyses explained 9-14% of the...
Resource Type:: Dissertation
Full Text:: Gradient Analysis and Spatial Pattern of Woody Plant Communities in Oregon. Abstract approved

ScholarsArchive@OSU

Influences of riparian canopy on aquatic communities in high desert streams of eastern Oregon

Understory herb and shrub responses to root trenching, pre-commercial thinning, and canopy closure in Douglas-fir forest of the western Cascades, Oregon

Understanding changes in forest cover and carbon storage in early successional forests of the Pacific Northwest using USDA Forest Service FIA and multi-temporal Landsat data

Regeneration and growth of several canopy tree species in the Maya Forest of Quintana Roo, Mexico : the role of competition and microhabitat conditions

Vegetation changes of communities containing medusahead (Taeniatherum asperum (Sim.) Nevski) following herbicide, grazing, and mowing treatments

The influence of canopy structure and epiphytes on the hydrology of Douglas-fir forests

Some factors affecting the establishment and growth of improved forage species on Laughlin-like soils in western Oregon

The location, composition, and structure of old-growth forests of the Oregon coast range

Ecological relationships among feral horses, cattle, and pronghorn in southeastern Oregon

Regional gradient analysis and spatial pattern of woody plant communities in Oregon

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