Index Catalog // ScholarsArchive@OSU

The relationships between fluctuations in oceanographic conditions, forage fishes, predatory fishes, predator food habits, and juvenile salmonid marine survival off the Columbia River

Creator:: Emmett, Robert L.
Abstract:: Salmonid run sizes are strongly affected by their early marine stage. Fully understanding the life history of salmonids means understanding how they interact with their marine environment and with other fishes. Changes in the biological and physical environment off the Columbia River region affects the distribution and abundance of predatory...
Resource Type:: Dissertation
Full Text:: Survival off the Columbia River. Abstract approved: David B. Sampson Salmonid run sizes

The influence of biological characteristics on fisheries co-management : a game theory perspective

Creator:: Trisak, Jiraporn
Abstract:: Co-management is considered an alternative approach to fisheries management, however, not all co-managed fisheries have been successful. Most studies discussing the success and failure of co-management have emphasized economic and social attributes of success and failure, such as fishery rights and institutional arrangements. The effect on co-management of biological characteristics,...
Resource Type:: Dissertation
Full Text:: B. Sampson Co-management is considered an alternative approach to fisheries management, however

The effect of preplant nitrogen fertilization and soil temperature on biological nitrogen fixation and yield of alfalfa (Medicago sativa L.)

Creator:: Shuler, Philip E.
Abstract:: The usefulness of preplant nitrogen (N) in establishing alfalfa in colder production areas has not been well characterized. This study was conducted to determine the effect of preplant N and soil temperature on yield, percent N derived from biological nitrogen fixation (PBNF), and shoot N concentration in alfalfa (Medicago sativa...
Resource Type:: Dissertation
Full Text:: : David 5. Hannaway The usefulness of preplant nitrogen (N) in estab- lishing alfalfa in colder

Spatial and temporal characteristics of bottom-trawl fish assemblages of the continental shelf and upper slope of the Pacific Coast of the United States, 1977-1992

Creator:: Jay, Chadwick V.
Abstract:: Twenty-three bottom-trawl fish assemblages were identified from the relative biomass of 33 dominant species that occurred in the National Marine Fisheries Services' triennial trawl surveys over the continental shelf and upper slope off California, Oregon, and Washington from 1977 to 1992. The assemblages accounted for about 70% of the total...
Resource Type:: Dissertation
Full Text:: . Abstract approved: David Sampson Twenty-three bottom-trawl fish assemblages were identified from the

Sensitivity of the stock synthesis assessment model : a simulation approach

Creator:: Yin, Yanshui
Abstract:: Stock assessments for many U.S. Pacific coast groundfish stocks are developed using the catch-at-age method known as Stock Synthesis. In this work a simulation package was developed and used to evaluate the sensitivity of the Stock Synthesis program. More specifically, the evaluation focused on the impacts of input data errors...
Resource Type:: Dissertation
Full Text:: Stock Synthesis Assessment Model: a Simulation Approach. Abstract approved: David B. Sampson Stock

Redd site selection and spawning habitat use by fall chinook salmon

Creator:: Geist, David R.
Abstract:: The spawning habitat associated with fall chinook salmon (Oncorhynchus tshawytscha) redd clusters was investigated in the Hanford Reach of the Columbia River. A conceptual spawning habitat model is proposed that describes how geomorphic features of river channels create hydraulic processes, including hyporheic flows, that influence where salmon spawn in unconstrained...
Resource Type:: Dissertation
Full Text:: Chinook Salmon. Abstract approved: David Sampson The spawning habitat associated with fall chinook

Qualitative analysis of sardine and anchovy oscillations and implications for the management of sardine and anchovy fisheries in Oman

Creator:: Al-Jufaili, Saud M.
Abstract:: Sardines and anchovies are small pelagic fishes that support important commercial fisheries around the world. This project reviews the inverse cyclic behavior in the abundance of these two stocks, which is a striking feature in many regions. In addition, the project used qualitative loop analysis techniques to analyze the feasible...
Resource Type:: Dissertation
Full Text:: Fisheries in Oman. Abstract approved: David B. Sampson Sardines and anchovies are small pelagic fishes

Oceanographic effects on the dynamics of food habits and growth condition of some groundfish species of the Pacific Northwest

Creator:: Lee, Yong Woo
Abstract:: Marine fish are subject to direct and indirect oceanographic variations operating at short and long time scales. In this study feeding habits and long-term growth condition of several groundfish species of the Pacific Northwest are examined to understand the relationship between variations in the fish's biological and life history components...
Resource Type:: Dissertation

Nitrogen nutrition of seedling alfalfa (Medicago sativa L.)

Creator:: Eardly, Bertrand D.
Abstract:: Nitrogen fertilization of seedling legumes is a controversial practice intended to provide N to the plant during periods when seed N, soil N, and N₂ fixation may not meet plant requirements; eg. prenodulation, postharvest, or in the event of an inoculation failure. Field experiments were conducted in 3 consecutive years...
Resource Type:: Dissertation
Full Text:: .) Abstract approved: Redacted for privacy Dr. David B. Hannaway Nitrogen fertilization of seedling legumes

Multiple comparisons for the balanced two-way factorial : an applied Bayes rule (k-ratio) approach

Creator:: Pennello, Gene A.
Resource Type:: Dissertation
Full Text:: : David B. Duncan The k-ratio approach to the multiple comparisons of means (MCM) problem is extended

ScholarsArchive@OSU

The relationships between fluctuations in oceanographic conditions, forage fishes, predatory fishes, predator food habits, and juvenile salmonid marine survival off the Columbia River

The influence of biological characteristics on fisheries co-management : a game theory perspective

The effect of preplant nitrogen fertilization and soil temperature on biological nitrogen fixation and yield of alfalfa (Medicago sativa L.)

Spatial and temporal characteristics of bottom-trawl fish assemblages of the continental shelf and upper slope of the Pacific Coast of the United States, 1977-1992

Sensitivity of the stock synthesis assessment model : a simulation approach

Redd site selection and spawning habitat use by fall chinook salmon

Qualitative analysis of sardine and anchovy oscillations and implications for the management of sardine and anchovy fisheries in Oman

Oceanographic effects on the dynamics of food habits and growth condition of some groundfish species of the Pacific Northwest

Nitrogen nutrition of seedling alfalfa (Medicago sativa L.)

Multiple comparisons for the balanced two-way factorial : an applied Bayes rule (k-ratio) approach

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