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Riparian vegetation composition and structure associated with channel morphology of headwater meadow streams in the Blue Mountains, northeast Oregon

Creator:: Toledo, Zachary O.
Abstract:: Relationships between the structure and composition of riparian vegetation with channel morphology were examined in three montane meadow streams in the headwaters of the Upper Grande Ronde River and North Fork John Day River in the Blue Mountains, northeast Oregon. Vegetation composition, root biomass, and channel morphology cross-sections were sampled...
Resource Type:: Masters Thesis
Full Text:: to some of the most beautiful country on Earth. I am grateful to J. Boone Kauffman for providing the

Anthropogenic activities associated with the status of salmon stocks in Pacific Northwest watersheds

Creator:: Mrakovcich, Karina Lorenz
Abstract:: Stocks of salmon are declining in the Pacific Northwest. Based on region-wide studies that list and categorize the status of salmon stocks (Nehlsen et al., 1991; Huntington et al., 1994; and Nawa, 1995), I analyze the watersheds where stocks of salmon spawn for several anthropogenic variables, most of which are...
Resource Type:: Dissertation

Headwater stream macroinvertebrates of the H.J. Andrews Experimental Forest, Oregon

Creator:: Frady, Charles H.
Abstract:: Recent studies of headwater streams have demonstrated their importance to overall watershed biodiversity, nutrient cycling, and energy flux. However, little attention has been paid to long-term effects of forest harvest on macroinvertebrate communities in headwater streams. This study investigated headwater stream macroinvertebrate communities in the H.J. Andrews Experimental Forest, Oregon,...
Resource Type:: Masters Thesis

Distribution of nearshore macroinvertebrates in lakes of the northern Cascade Mountains, Washington, USA

Creator:: Hoffman, Robert L.
Abstract:: Although nearshore macroinvertebrates are integral members of high mountain lentic systems, knowledge of ecological factors influencing their distributions is limited. Factors affecting distributions of nearshore macroinvertebrates were investigated, including microhabitat use and vertebrate predation, in the oligotrophic lakes of North Cascades National Park Service Complex, Washington, USA, and the conformity...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: Wi am J. Liss Although nearshore macroinvertebrates are integral members of high

Colonization and development of macroinvertebrate communities in laboratory streams

Creator:: Lomnicky, Gregg A.
Abstract:: Laboratory stream communities in simulated old growth second order streams were sampled June 1984 and June 1985 to advance an understanding of their organization and development, and their response to an environmental perturbance, the toxicant dieldrin. An interpenetrating hierarchical view of habitats and community subsystems was taken to conceptualize community...
Resource Type:: Masters Thesis
Full Text:: Macroinvertebrate Communities in Laboratory Streams. Redacted for privacy Abstract approved: 1441.6'am J. Liss

Accounting for the Effects of Fish Detectability in Fishery-independent Surveys

Creator:: McLeod, Montana
Abstract:: In recent years, there has been an increase in episodic coastal hypoxia along the mid to inner-shelf waters off the Oregon Coast. Wind-driven coastal upwelling events can exacerbate the magnitude of these hypoxic events, causing extremely hypoxic bottom water (<0.5ml l-1 dissolved oxygen) to move onshore towards the inner shelf....
Resource Type:: Masters Thesis
Full Text:: Abstract approved: ______________________________________________________ J. Wilson White In recent

Ecology of woody riparian vegetation in tributaries of the Upper Grande Ronde River basin, Oregon

Creator:: Lytjen, Danna J.
Abstract:: Two studies on Catherine Creek and Meadow Creek of the Upper Grande Ronde River basin, quantified several physical and biotic influences on woody riparian community composition and structure. The Catherine Creek study examined the association of woody riparian species with elevational and geomorphic gradients. The Meadow Creek study examined the...
Resource Type:: Masters Thesis
Full Text:: Upper Grande Ronde River basin, Oregon AN ABSTRACT OF THE THESIS OF Danna J. Lytjen for the degree of

Accounting for Transient Dynamics Improves use of Marine Protected Areas as a Reference Point for Fisheries Management

Creator:: Quennessen, Victoria I.
Abstract:: Fisheries management that is based on quantitative assessment has commonly relied on estimating the unfished biomass of a fished stock to compare current and historical population size. Developing predictive models for this requires many years of catch and abundance data. Smaller, new, or mainly recreational fisheries may not have the...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ J. Wilson White Fisheries management that is based on quantitative assessment has

Stream habitat classification and restoration in the Blue Mountians of northeast Oregon

Creator:: Ebersole, Joseph Lamar
Abstract:: The restoration of rivers and streams should be based on a strong conceptual framework. Streams are developing systems. As such, streams exhibit temporal behaviors that change with changing stream environments. Underlying the dynamic development of streams is potential capacity. Streams express this capacity as an array of habitats over time...
Resource Type:: Masters Thesis

Age, growth, and diet of fish in the Waldo Lake natural-cultural system

Creator:: Swets, Nicola L.
Abstract:: Waldo Lake, located in the Oregon Cascades, is considered to be one of the most dilute lakes in the world. Even with very low nutrient concentrations and sparse populations of zooplankton, introduced fish in the lake are large in size and in good condition when compared to fish from other...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Riparian vegetation composition and structure associated with channel morphology of headwater meadow streams in the Blue Mountains, northeast Oregon

Anthropogenic activities associated with the status of salmon stocks in Pacific Northwest watersheds

Headwater stream macroinvertebrates of the H.J. Andrews Experimental Forest, Oregon

Distribution of nearshore macroinvertebrates in lakes of the northern Cascade Mountains, Washington, USA

Colonization and development of macroinvertebrate communities in laboratory streams

Accounting for the Effects of Fish Detectability in Fishery-independent Surveys

Ecology of woody riparian vegetation in tributaries of the Upper Grande Ronde River basin, Oregon

Accounting for Transient Dynamics Improves use of Marine Protected Areas as a Reference Point for Fisheries Management

Stream habitat classification and restoration in the Blue Mountians of northeast Oregon

Age, growth, and diet of fish in the Waldo Lake natural-cultural system

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