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

A characterization of unmanaged riparian overstories in the central Oregon Coast Range

Creator:: Nierenberg, Tara R.
Abstract:: Riparian areas that can be used as reference sites on which to base goals of vegetation restoration have not been documented in the Oregon Coast Range. I examined the composition and distribution of unmanaged riparian overstories in the central Oregon Coast Range along nine streams which have experienced minimal disturbance...
Resource Type:: Masters Thesis

Estimating ground cover via spectral data

Creator:: Axness, Daniel S.
Abstract:: Potato ground cover and spectral data were measured in the Columbia Basin during the 1990 growing season. Three spectral were correlated with ground cover; normalized difference, near infrared-red ratio, and the first derivative of the spectral curve at 750 nm. All models were statistically significant at the 99% level. Normalized...
Resource Type:: Masters Thesis
Full Text:: ground cover and canopy reflectance was studied under field conditions in Eastern Oregon during the

Seasonal snowcover dynamics beneath boreal forest canopies

Creator:: Link, Timothy E.
Abstract:: The accurate simulation of snowpack deposition and ablation beneath forested areas is confounded by the fact that the vegetation canopy strongly affects the snow surface energy balance. The canopy alters the radiation balance of the snowcover, and reduces the wind speed at the snow surface. Data collected as part of...
Resource Type:: Masters Thesis
Full Text:: forested areas is confounded by the fact that the vegetation canopy strongly affects the snow surface

Species Management Guide for Triteleia hendersonii var. leachiae

Creator:: Titus, Jonathan
Abstract:: Blue-striped Brodiaea or Leach's Brodiaea (Triteleia hendersonii Greene var. leachiae [Peck] Hoover, or Brodiaea hendersonii Wats. var. leachiae ) Lily Family (Liliaceae) is found in the foothills of the Siskiyou Mountains of Curry, Coos and Josephine Counties of southwestern Oregon. It is occurs in a variety of habitats including meadow...
Resource Type:: Technical Report
Full Text:: . leachiae Species Management Guide for Triteleia hendersonii var. leachiae Jov\ /aJon Titus 1995 Oregon

A systematic and ecological study of Astragalus diaphanus (Fabaceae)

Creator:: Wright, Carolyn E.
Abstract:: Astragalus diaphanus is a rare plant endemic to the John Day River drainage of north-central Oregon. This species has several interesting features, including the dimorphism of its fruit and its geographical isolation from the two nearest taxonomically related species, which occur in Colorado. This study addressed the species' distribution and...
Resource Type:: Masters Thesis
Full Text:: diaphanus is a rare plant endemic to the John Day River drainage of north-central Oregon. This species has

Common plants of Oregon's rocky intertidal habitats

Creator:: Oregon. Dept. of Fish and Wildlife. Marine Resources Program
Abstract:: Color illustrations of common nearshore plants.
Resource Type:: Technical Report

Who's Coming to Dinner? Livestock Eating Habits and Their Effects on Grazing Management

Creator:: Oregon State University. Extension Service, David, Hannaway, and Kimberly, Hannaway
Abstract:: Examines the eating habits of cows, sheep, horses, and goats, and explores how forage selection, pugging, trampling, and fencing contribute to a pasture's health and sustainability.
Resource Type:: Video

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

The ecology of Devil's club (Oplopanax horridum (J.E. Smith) Miq.) in western Oregon

Creator:: Roorbach, Ashley H.
Abstract:: Devil's club (Oplopanax horridum (J. E. Smith) Miq.) is an indigenous shrub of the Pacific Northwest, often found in the Tsuga heterophylla (western hemlock)/Devil' s club association in western Oregon. In the same family as ginseng, Devil's club is gaining attention for its medicinal properties. While traditional uses of Devil's...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

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

A characterization of unmanaged riparian overstories in the central Oregon Coast Range

Estimating ground cover via spectral data

Seasonal snowcover dynamics beneath boreal forest canopies

Species Management Guide for Triteleia hendersonii var. leachiae

A systematic and ecological study of Astragalus diaphanus (Fabaceae)

Common plants of Oregon's rocky intertidal habitats

Who's Coming to Dinner? Livestock Eating Habits and Their Effects on Grazing Management

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

The ecology of Devil's club (Oplopanax horridum (J.E. Smith) Miq.) in western Oregon

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