In 1974, large numbers of Dungeness crabs migrated into tide pools near the South Jetty of Yaquina Bay and went through their annual molt. The public discovered the abundance of crabs, and found that they were easy prey during low tides. The situation prompted an emergency closure of the area...
Much information biologists need to do their job comes from fishermen's logbooks. These logbook data are confidential by law. No single log record, or single skipper's log information can be made available to anyone else. What use is made of these log records, and why are they useful is a...
This document outlines a proposal to plant red abalone in Whale Cove in Lincoln County, Oregon, in an attempt to establish a population in the northern half of the state. A proposed regulation includes a ban on all shellfish harvesting in Whale Cove.
The California vernal pool-endemic grasses Orcuttia tenuis and Tuctoria greenei, both listed under the U.S. Endangered Species Act, were recently found in Modoc County, California, a short distance south of the Oregon border. This prompted searches in suitable habitats in adjacent portions of the Klamath Basin in Oregon, in the...
This report focuses on wholesale and retail values of common species of fish caught in the Tillamook County area, including salmon, crab, oysters, shrimp, bottomfish, and tuna. It also gives a description of several factors affecting fish production, and discusses future outlook of salmon hatcheries.
This report deals with utilization of five species of flatfish caught in the Oregon trawl fishery for human food. Utilized fish are those kept and marketed (saleable) from the total catch. Discarded fish are small flatfish and unmarketable species. Herrmann and Harry (1963} reported nearly half the catch was of...
This is a report on the feasibility of using heated effluent for the culture of oysters containing detailed studies on the effects of increased temperatures on oyster growth.
Upper Cow Lake located in Malheur County, Oregon has a surface area of 975 acres and a volume of 7,150 acre-feet of water. Chemical treatment of the lake was completed September 11, 1963 to remove an abundant population of coarsescale suckers, bridgelip suckers, squawfish, black bullhead, shiners and dace.
Approximately...
Fish passing Winchester Dam view-window counting station on the North Umpqua River were enumerated. Figure 1 is a map of the Umpqua basin and denotes the counting station. The counts for summer steelhead, fall chinook, and sea-run cutthroat increased while those for winter steelhead, spring chinook, and coho decreased. By...
A view-window counting station was operated at the Pacific Power and Light Company's dam on the North Umpqua River at Winchester, Douglas County, Oregon. The fish passing the dam each season were enumerated by species, according to a statistical sampling program established at Oregon State University. The counter recorded the...
Tuberculosis in salmonoid fishes was first observed in the 1952 run of fall chinook salmon (Oncorhynchus tshawytscha) returning to the Bonneville Hatchery of the Oregon Fish Commission. In the studies reported here, tuberculosis was found not only in adult spring chinook but in silver salmon (0. kisutch), blueback salmon (0....
"The success of Mysis introduced in Kootenay Lake, British Columbia, prompted their introduction in many kokanee lakes in the Western states. Oregon introduced Mysis into eleven waters during the period 1965-67. Several states have conducted intensive studies to evaluate Mysis introductions. Many studies have concluded Mysis have had a negative...
Starry flounder are one of the most widely distributed flounders, occurring from southern California northward along the North American coast to the Aleutian Islands and southward to Korea and Japan.
The starry flounder has made a consistent contribution to the Oregon trawl fishery since its inception with a peak of...
The sand sole (Psettichthys melanostictus) is one of the finest quality sole species harvested by Oregon trawlers. It commands a correspondingly high price in the market, second only to petrale sole. The sand sole gets its name for its known affinity for sandy, shallow stretches of the ocean floor. A...
Exceptional data are available for the study of the salmon runs of the Columbia River in 1938. Detailed figures on catch were supplied by Oregon and Washington in such form that they could readily be combined with the counts at Bonneville Dam to provide a basis for estimating the escapement....
This document describes the life history and abundance of both the spring Chinook salmon and the Silver salmon in the Willamette River. It also goes into detail about various factors affecting Willamette salmon runs., including pollution, dams, and logging.
The sablefish has made a modest contribution to Oregon's commercial foodfish landings since the early part of this century, usually incidental to the halibut longline fishery. Trawl caught sablefish now dominate landings, but in recent years a pot fishery has developed off Astoria and Newport.