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Some factors influencing the trends of salmon populations in Oregon

Creator:: McKernan, Donald L. (Donald Lynn), 1918-1979, Johnson, Donald R., Hodges, John I., and Oregon. Fish Commission
Abstract:: Three factors were found to be significantly correlated with the fluctuations and trends in silver salmon production in Oregon. Logging was found to adversely affect the runs of salmon in later years. Exceptional winter floods seem to produce poor resulting runs. Low summer water flows also appear to produce lower...
Resource Type:: Technical Report
Full Text:: ., Washington 5, D. C. SOME FACTORS INFLUENCING THE TRENDS OF SALMON POPULATIONS IN OREGON DONALD L. MCKERNAN

Observations on horseclams of the 1949-50 set in Yaquina Bay

Creator:: Tollefson, Roger, Marriage, Lowell D., Twahy, Donald, Wilkes, Stanley, Woelke, Charles, and Oregon. Fish Commission
Abstract:: This report contains a series of individual reports within it. The main report continues growth and aging studies on fat gaper clams in Yaquina Bay. This document also includes a report on other Fish Commission activities on the Coast, a summary of razor clam research, the beginning of a survey...
Resource Type:: Technical Report
Full Text:: variances to be equal( / with 45, 45 d. f.)0 Further test- ing the uirfererice between the two me ans by the

Characterizing the Spread and Consequences of Mycoplasma ovipneumoniae on Bighorn Sheep (Ovis canadensis) in the Northern Basin and Range Ecosystem

Creator:: Spaan, Robert S.
Abstract:: North American bighorn sheep (Ovis canadensis) have experienced significant declines and population extirpations due to novel pathogens such as Mycoplasma ovipneumoniae. This disease continues to limit the population restoration of bighorn sheep. Therefore, understanding the demographic consequences of pathogen presence and the risk of contact between bighorn populations and potential...
Resource Type:: Dissertation
Full Text:: canadensis) probability of use for A. male summer, B. female summer, C. male winter, and D. female

The Indian Dip Net Fishery at Celilo Falls on the Columbia River

Creator:: Schoning, Robert W., Merrell, Theodore R., Johnson, Donald R., and Oregon. Fish Commission
Abstract:: 1. The Indians at Celilo Falls catch an average of over 2,600,000 pounds of fish each year, in dip nets in a manner very much the same as used by their ancestors. 2. The bulk of the fish caught at Celilo Falls is from the upriver fall run of chinook...
Resource Type:: Technical Report
Full Text:: RIVER R. W. SCHONING, T. R. MERRELL, JR. and D. R. JOHNSON OREGON FISH COMMISSION Portland, Oregon

A measured delay in the migration of adult chinook salmon at Bonneville Dam on the Columbia River

Creator:: Schoning, Robert W., Johnson, Donald R., and Oregon. Fish Commission
Abstract:: A study was undertaken in the fall of 1948 by the Oregon Fish Commission to determine the possible presence and importance of a delay in the migration of adult chinook salmon (Oncorhynchus tshawytscha) at Bonneville Dam on the Columbia River. Approximately 650 chinook were captured, tagged, and released at the...
Resource Type:: Technical Report
Full Text:: at Bonneville Dam On The Columbia River Robert W. Schoning and Donald R. Johnson FISH COMMISSION

Illinois Falls fish ladder

Creator:: Jacobson, Donald M., Borovicka, Robert L., and Oregon. State Game Commission. Fishery Division
Abstract:: The construction of Illinois Falls fish ladder on the Illinois River in Oregon was completed in November 1961. The ladder was opened and operated during the winter of 1961-62. Final cleanup and rock removal was completed in the fall of 1962. The ladder was installed on a natural barrier where...
Resource Type:: Technical Report
Full Text:: COMPLETION REPORT Illinois Falls Fish Ladder By Donald M. Jacobson Project Engineer Robert L. Borovicka

The effects on salmon populations of the partial elimination of fixed fishing gear on the Columbia River in 1935

Creator:: Johnson, Donald R., Chapman, Wilbert McLeod, 1910-1970, Schoning, Robert W., and Oregon. Fish Commission
Abstract:: 1. Six major types of commercial gear have been used to take salmon and steelhead on the Columbia River; namely, gill nets, set nets, seines, traps, fish wheels and dip nets. 2. The five important commercial species in the Columbia River are chinook, silver, blueback and chum salmon and steelhead...
Resource Type:: Technical Report
Full Text:: THE COLUMBIA RIVER IN 1935 D. R. JOHNSON, W. M. CHAPMAN AND R. W. SCHONING OREGON FISH COMMISSION

The Environmental, Economic, and Social Factors that Contribute to the Importance of the Pacific Razor Clam (Siliqua patula) Fishery for Oregon Coastal Communities: A Northern Oregon Case Study

Creator:: Baker, Laura C.
Abstract:: Pacific razor clams (Siliqua patula) are narrow oblong bivalves that can be found in sandy habitats along the western coast of the United States, from Alaska (Aleutian Islands) to southern California (Pismo Beach). In Washington state, the razor clam fishery has been documented to be an important contributor to the...
Resource Type:: Masters Thesis
Full Text:: began with passage of the legislation known as the Oregon Beach Bill (1967). These statues ensure

The fishery and biology of the Dungeness crab (Cancer magister Dana) in Oregon waters

Creator:: Waldron, Kenneth D. and Oregon. Fish Commission
Abstract:: Results of studies beginning in 1947 on the biology of the Dungeness crab (Cancer magister) in Oregon coastal waters are reported. A review is made of the history of the fishery with regard to trend of the catch by magnitude, area, and season; the development and conduct of the fishery...
Resource Type:: Technical Report
Full Text:: ) in Oregon biers Kenneth D. Waldron FISH COMMISSION OF OREGON Portland, Oregon Contribution No. 24

The bay clams of Oregon : their economic importance, relative abundance, and general distribution

Creator:: Marriage, Lowell D. and Oregon. Fish Commission
Abstract:: An average of approximately 200,000 pounds of bay clams were harvested annually in Oregon for the years 1943-49, inclusive. The commercial harvest of bay clams is composed of the gaper, cockle, and softshell clams. The recreational, or noncommercial, harvest of bay clams is composed mainly of the gaper, cockle, softshell,...
Resource Type:: Technical Report
Full Text:: fihundance, and General Distribution Lowell D. Marriage FISH COMMISSION OF OREGON Portland, Oregon

ScholarsArchive@OSU

Some factors influencing the trends of salmon populations in Oregon

Observations on horseclams of the 1949-50 set in Yaquina Bay

Characterizing the Spread and Consequences of Mycoplasma ovipneumoniae on Bighorn Sheep (Ovis canadensis) in the Northern Basin and Range Ecosystem

The Indian Dip Net Fishery at Celilo Falls on the Columbia River

A measured delay in the migration of adult chinook salmon at Bonneville Dam on the Columbia River

Illinois Falls fish ladder

The effects on salmon populations of the partial elimination of fixed fishing gear on the Columbia River in 1935

The Environmental, Economic, and Social Factors that Contribute to the Importance of the Pacific Razor Clam (Siliqua patula) Fishery for Oregon Coastal Communities: A Northern Oregon Case Study

The fishery and biology of the Dungeness crab (Cancer magister Dana) in Oregon waters

The bay clams of Oregon : their economic importance, relative abundance, and general distribution

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