The purpose of this investigation was to determine if pinniped feeding patterns have significant negative impacts on depressed salmonid stocks. Knowledge about prey selection by pinnipeds is key to assessing their potential impact on salmonid stocks. The four major work elements reported are: 1) the reanalysis of Columbia River area...
The primary objective of the Shrimp Resource Assessment is to provide scientific information and alternative resource use strategies for the management of the regional pink shrimp fishery resource. To accomplish this objective, five specific annual tasks were developed: 1) Collect and code shrimp fishery logbook data, match logbook information to...
During April 1979 the Oregon Department of Fish and Wildlife participated in a survey of Pacific ocean perch (Sebastes alutus) in cooperation with the National Marine Fisheries Service and Washington Department of Fisheries. The survey occurred off the coasts of Oregon and Washington from Newport, Oregon to Cape Flattery. Planning...
This white paper outlines interim guidance for development of Oregon Department of Fish and Wildlife habitat mitigation recommendations associated with renewable energy development and associated infrastructure or other landscape scale industrial-commercial developments in greater sage-grouse habitat in Oregon. This guidance is interim until empirical data are available that quantify the...
Greater sage-grouse (Centrocercus urophasianus) were once found in most grassland and sagebrush (Artemisia spp.) habitats east of the Cascades in Oregon. European settlement and conversion of sagebrush steppe into agricultural production led to extirpation of the species in the Columbia Basin by the early part of the 1900s, but sagebrush...
During the 2016 greater sage-grouse breeding season, 1,908 aerial and ground lek surveys were conducted at 768 individual lek sites comprising 501 lek complexes. Surveys were conducted at 66.0% of known lek sites in the state, which was the greatest proportion of leks ever surveyed in Oregon. Survey effort during...
During the 2017 greater sage-grouse (Centrocercus urophasianus) breeding season, 1,580 aerial and ground lek surveys were conducted at 674 individual lek sites comprising 429 lek complexes. Surveys were conducted at 58.0% of known lek sites in the state. Survey effort during 2017 declined -17.1%, -12.2%, and 14.5% from 2016 levels,...
This report is one of a series prepared by the Oregon Department of Fish
and Wildlife (ODFW) which summarizes the physical and biological data for
selected Oregon estuaries. The reports are intended to assist coastal planners
and resource managers in Oregon in fulfilling the inventory and comprehensive
plan requirements of...
Report of the Oregon Fish and Game Commission’s transactions and operations for July 1, 1978-June 30, 1980. This report summarizes fish and game resources for the biennium, as well as research conducted and an outline of activities to educate the public on operations. It contains information on game such as...
Report of the Oregon Fish and Game Commission’s transactions and operations for July 1, 1976-June 30, 1978. This report summarizes fish and game resources for the biennium, as well as research conducted and an outline of activities to educate the public on operations. The report contains information on game such...
Report of the Oregon Fish and Game Commission’s transactions and operations for July 1, 1980-June 30, 1982. This report summarizes fish and game resources for the biennium, as well as research conducted and an outline of activities to educate the public on operations. It contains information on game such as...
July 1, 1974-June 30, 1976. The first biennial report following the merging of the Wildlife Commission and the Fish Commission. This report summarizes fish and game resources for the biennium, as well as research conducted and an outline of activities to educate the public on operations. It still contains information...
This document is a summary of the activities of the Wildlife Division for the period of July 1, 1979 to June 30, 1980. It includes numbers of hunting licenses, increased prices of furs, large and small game statistics for animals such as elk, deer, bears, pheasants, and quail. The document...
This document covers the massive decline in catch and return on trout stocked in Diamond Lake starting in the 90s and describes issues addressing the most likely cause, an increased Tui chub population competing for resources with the trout. The report discusses the persistent issue of Tui chub in Diamond...
This document contains a discussion by the biological staff of the proposed regulations for the July 13 Fish Commission hearing, and examines potential effects of allowing the use of Razor Clams as crab bait.
This document is a summary of the activities of the Wildlife Division for the period of July 1, 1977 to June 30, 1978. It includes numbers of hunting licenses, increased prices of furs, and both large and small game statistics including elk, bears, pheasants, and quail. The document also discusses...
This report gives information on the Coos River shad fishery, going into detail about recent (for 1957) trends in shad fishing such as licenses issued, total fish caught per location, and length frequency.
This report discusses the harvest of intertidal non-food invertebrates in 1974, gives the number of collection permits issued, and describes intensity of collection by area.
This report discusses the harvest of intertidal non-food invertebrates in 1973, giving number of collecting permits issued and intensity of collecting by area.
In 1976, the Oregon Department of Fish and Wildlife Commission approved regulation changes for the sport harvest of bay clams. The changes were made at the request of the shellfish staff; our concern was the gradual deterioration in the status of the stocks as reflected in annual census work on...
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...
The OFC staff had been investigating razor clam stocks in Oregon since 1949, and this report outlines their findings up to 1964. It gives the number of razor clams harvested as well as the number of diggers, and the age composition of those clams harvested. Finally, it discusses the increase...
This study was performed in response to doubts about the reliability of the database in place at ODFW. It consisted of surveys to verify if Chinook salmon were using the habitats previously identified and looks for discrepancies between summer habitat inventory and fall Chinook spawners. A large portion of the...
This investigation is focused on smallmouth bass in the Umpqua River system. This investigation contains methods of fish sampling used and, later, describes which methods were more effective for specific tasks. It includes population size, density/structure, mortality rates, and age/growth data regarding the smallmouth bass. See also: Umpqua River smallmouth...
The Basin Investigation Section, Oregon State Game Commission (now a part of the Environmental Management Section, Oregon Department of Fish and Wildlife) studied the John Day Basin to provide the State Water Resources Board with fish life water requirement data. Field studies were conducted during 1966, 1967, and 1970. Principal...
A study was undertaken in winter 1977-78 to obtain data on the
spawning stock of Pacific herring, Clupea harengua pallasi,utilizing the
Coos Bay estuary. This study centered on two objectives; (1) to record
the distribution and time of herring spawn and (2) estimate the fish
biomass spawning in Coos Bay....
Groundfish surveys off the Washington coast were conducted in September of 1975 and 1976 between Cape Flattery and the Columbia River. The primary purposes of the surveys were to obtain estimates of biomass and further our knowledge on population parameters of important groundfish species, especially flatfish, occupying the continental shelf...
This three page report details a shark attack on a surfer that tooks place on November 27, 1979 off Cannon Beach, Oregon. The bite marks on the surfboard are detailed including x-rays showing the teeth marks.
The Marine Resource Program of the Oregon Department of Fish and Wildlife is headquartered in a building at the Hatfield Marine Science Center. Built in 1970 for 30 personnel, it now houses 52. By the end of 2007 the MRP will need space for 82. The purpose of this report...
Our study area includes the three McKenzie populations, and a reintroduced population in the Middle Fork Willamette and tributaries above Hills Creek Reservoir. We monitored bull trout populations in the McKenzie and Middle Fork Willamette basins using a combination of sampling techniques that include spawning surveys, juvenile trapping, electronic fish...
Prior to 1978, Dolly Varden Salvelinus malma were classified into an anadromous and interior form. Cavender (1978) classified the interior form as a distinct species, Salvelinus confluentus, the bull trout. Bull trout are large char weighing up to 18 kg and growing to over one meter in length (Goetz 1989)....
“October 1, 1977 to September 30, 1978.” “Annual and Completion Report.” (front cover) "The Troll Salmon Investigation is responsible for obtaining fishery and biological data, analyzing these data, and recommending appropriate management options for the troll fishery. Proposed management options are designed to achieve the optimum use of the salmon...
The Troll Salmon Investigation is responsible for obtaining fishery and biological data, analyzing these data, and recommending appropriate management options for the troll fishery. Proposed management options are designed to achieve the optimum use of the salmon resource on a sustained basis. Activities pursued during FY 1977 included the sampling...
"As the human population has grown, the recreational and commercial use in our estuaries has increased as well. Many people have more leisure time while others facing economic pressures have turned to natural resources to supplement their food needs and/or income. The increased demand has resulted in conflicts of philosophy...
This project has provided the ODFW Marine Habitat Project with a unique
opportunity to make a comparative examination of the habitats and fish communities of a
heavily fished reef off of Siletz Bay, and a nearly unfished reef off Cape Perpetua. There
are over 17,000 angler trips for groundfish out...
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.
Where there’s a law, there is probably someone trying to evade that law. In this document, ODFW personnel working with the Oregon Commission on Fish and Wildlife attempted to tweak crabbing regulations to prevent unfair exploitation of a limited resource. This document addresses the need to sort and discard undersized...
In 1991, the State of Oregon experimented with allowing the recreational harvest of female Dungeness crabs. This experiment was unsuccessful, due to confusion about areas appropriate for catching crabs and probable overharvesting. Documents given here show the initial ODFW request to amend the regulation made to the Oregon Fish and...
This is an exhibit made by Oregon Dept. of Fish and Wildlife staff for the October 16, 1991 meeting of the Oregon Fish and Wildlife Commission. “In 1990, the Commission received a petition which called for prohibition of commercial crabbing within 1 1/2 miles of the mouth of Alsea Bay....
This report presents information on clam distribution in Oregon estuaries. It includes clam population estimates for parts of Yaquina, Tillamook and Coos bays. Gives data from a clam aging study. Permits were issued for commercial clam harvesting in Yaquina and Coos bays. Reports on plantings of clams in Netarts and...
This is a presentation made by the Oregon Dept. of Fish and Wildlife before a meeting of the Oregon Fish and Wildlife Commission. It advocates closing sport harvests of abalone, citing a "conservation crisis." ""We have reason to suspect that abalone are being taken from Oregon waters under the guise...