Index Catalog // ScholarsArchive@OSU

Life history and evolutionary adaptation of Pacific salmon and its application in management

Creator:: Wevers, Mary Jo
Abstract:: An approach to understanding and managing anadromous salmon, steelhead, and sea-run cutthroat trout (Oncorhynchus spp.) based on life history and evolutionary adaptive capacities of species and stocks is presented. Species, stocks, and local populations are viewed as systems that are continuously adapting to changing environmental conditions. They have the potential...
Resource Type:: Dissertation
Full Text:: . Warren An approach to understanding and managing anadromous salmon, steelhead, and sea-run cutthroat

Classification of Icelandic watersheds and rivers to explain life history strategies of Atlantic salmon

Creator:: Gudjonsson, Sigurdur
Abstract:: A hierarchical classification system of Iceland's watersheds and rivers is presented. The classification is based on Iceland's substrate, climate, water, biota, and human cultural influences. The geological formations of Iceland are very different in character depending on their age and formation history. Three major types of formations occur: Tertiary, Plio-Pleistocene,...
Resource Type:: Dissertation
Full Text:: Abstract approved: 4 Redacted for Privacy Charles E. Warren A hierarchical classification system of

Geomorphic influences on habitat formation, distribution, and development and the classification of upland coastal Oregon streams

Creator:: Hurley, Michael D.
Abstract:: A framework is presented for a more causal explanation and ordering of stream characteristics than traditional means have used. Patterns of stream habitat distribution are related to particular characteristics of the geomorphology of watersheds. Variability in stream characteristics can be explained by the spatial distribution of properties of the watershed...
Resource Type:: Masters Thesis
Full Text:: of Upland Coastal Oregon Streams, Redacted for privacy Abstract approved: _ _ _ _ Charles E. Warren

Life history patterns of two allopatric clupeids : Atlantic menhaden (Brevoortia tyrannus) and gulf menhaden (B. patronus)

Creator:: Powell, Allyn B.
Abstract:: Atlantic menhaden, compared to gulf menhaden, exhibit a life history pattern that appears to be adapted to a more unpredictable reproductive environment. From experiments on laboratory-reared eggs and larvae, Atlantic menhaden have larger eggs with larger yolk volume. They are larger at hatching, utilize their yolk faster, begin feeding at...
Resource Type:: Dissertation
Full Text:: ) and Gulf Menhaden (B. patronus). Abstract approved: Redacted for Privacy Dr. Charles E. Warren

A morphologic and morphometric analysis of the "Sorex vagrans species complex" in the Pacific Coast region

Creator:: Carraway, Leslie N.
Abstract:: Shrews of the "Sorex vagrans species complex" were classified into nine taxa on the basis of morphologic and morphometric analyses of 2,299 specimens from Washington, west of the Cascade Mountains in Oregon, and in the Coast Ranges of California. In Washington, Sorex monticolus setosus and S. m. obscurus occur west...
Resource Type:: Dissertation
Full Text:: Pacific Coast Region Abstract approved: Redacted for Privacy Charles E. Warren Shrews of the "Sorex

Contextual systems description of an Oregon coastal watershed

Creator:: Goetze, Brigitte
Abstract:: Many resource management controversies indicate disagreement about the possible intended and unintended effects of management actions on ecosystems. Researchers have documented a variety of negative effects on specific ecosystems, e. g. the degradation of salmonid habitat due to mass wasting (Hagans et al. 1986). While the effects of some management...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF Brigitte R. C. Goetze for the

Life history strategies and tactics of striped bass (Morone saxatilis) Walbaum

Creator:: Eldridge, Maxwell B.
Abstract:: Traditional approaches to research and management of striped bass have tended to be mechanistic, numerically oriented, and based on limited life history information. In the study presented here, comprehensive conceptual perspective was used in a multivariate study of life history and evolutionary adaptation of 10 striped bass populations representing the...
Resource Type:: Dissertation
Full Text:: . Warren Traditional approaches to research and management of striped bass have tended to be mechanistic

Effects of beaver on stream channels and coho salmon habitat, Kenai Peninsula, Alaska

Creator:: Sanner, Carol Jo
Resource Type:: Masters Thesis
Full Text:: Completed May 1, 1987 Commencement June, 1987 APPROVED: Uharles L. Warren, Protessor of 1-fsheries in

The development and maintenance of stream community structure and organization

Creator:: Wevers, Mary Jo
Abstract:: The goal of this study was to better understand stream communities through a perspective that might make their structure, organization, and development more understandable. This goal was approached through the following objectives: 1. To determine the assemblages of stream organisms and define subsystems within a stream community. 2. To explain...
Resource Type:: Masters Thesis
Full Text:: Community Structure and Organization Redacted for Privacy Abstract approved: Charles E. Warren The goal

Effects of perturbation on community structure and organization in aquatic microcosms

Creator:: Finger, Susan Everett
Abstract:: Aquatic communities consisting of guppies, amphipods, copepods, snails, nematodes, rotifers, protozoans, euglenoid flagellates, and other microorganisms were established in sixteen laboratory microcosms. Guppies were exploited at four different levels (0 percent, 10 percent, 20 percent, and 40 percent of the population biomass) with four communities at each level of exploitation....
Resource Type:: Masters Thesis
Full Text:: COMMUNITY STRUCTURE AND ORGANIZATION OF A Abstract approved: IC ICROCOSMS Charles E. Warren Aquatic

ScholarsArchive@OSU

Life history and evolutionary adaptation of Pacific salmon and its application in management

Classification of Icelandic watersheds and rivers to explain life history strategies of Atlantic salmon

Geomorphic influences on habitat formation, distribution, and development and the classification of upland coastal Oregon streams

Life history patterns of two allopatric clupeids : Atlantic menhaden (Brevoortia tyrannus) and gulf menhaden (B. patronus)

A morphologic and morphometric analysis of the "Sorex vagrans species complex" in the Pacific Coast region

Contextual systems description of an Oregon coastal watershed

Life history strategies and tactics of striped bass (Morone saxatilis) Walbaum

Effects of beaver on stream channels and coho salmon habitat, Kenai Peninsula, Alaska

The development and maintenance of stream community structure and organization

Effects of perturbation on community structure and organization in aquatic microcosms

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