This is an Oregon Dept. of Fish and Wildlife exhibit for a meeting of the Oregon State Fish and Wildlife Commission. "Problem: Oregon crab fishermen are concerned that 4-3/8" escape ports in crab pots allow too many legal male crabs to escape. Requests have been made to determine whether or...
Oregon Fishermen in Ocean Observing Research (OrFIOOR) is a cooperative research program between ocean scientists and fishermen in the Pacific Northwest. Dungeness crab fishermen attach sensor packages (temperature and dissolved oxygen) to crab pots. The pots serve as platforms of opportunity for ocean observing. This study examines three principle questions...
In 1973 Oregon entered into a cooperative State/Federal Dungeness Crab Management Program with the states of Washington and California, the National Marine Fisheries Service, and the Pacific Marine Fisheries Commission. A study team consisting of two economists and a biologist was hired to review the Dungeness crab fishery and management...
Various mollusks, including small bivalves and gastropod snails, are a common food source for intertidal crabs. Prey opening techniques used on hard-shell prey are dependent on claw size and morphology. For example, large, strong claws can crush a snail outright while smaller, weaker claws leave characteristic peels, pulls and upper...
"Prepared for the State/Federal Dungeness Crab Management Program. June 1974." "Presented here is a summary of the existing data on Dungeness crab sport fishing in Washington, Oregon, and California excluding Puget Sound, Washington." (From the Introduction)
"Prepared for the State/Federal Dungeness Crab Management Program, Policy Committee Meeting, April 1974." "At the present time most traps used in the Dungeness crab fishery have at least one escape port for the purpose of allowing small crabs to escape. The problem is that there is considerable variation in the...
"Prepared for the State/Federal Dungeness Crab Management Program. May 1974." "One of the initial objectives of the State/Federal Dungeness Crab Management Program is to evaluate crab mortality caused by certain fishery practices. The areas of most concern include mortality caused by trawling, handling of softshell and sublegal crabs, lost pots...
In the past two decades, occurrences of summertime upwelling-driven low dissolved oxygen (DO) events, or hypoxia, have increased along the northeast Pacific coast. If hypoxic events are severe enough to cause marine species mortality, the areas affected are often called "dead zones." In 2002 and again in 2006, the events...