Recent successes of hatcheries in producing coho salmon have stimulated searches for additional hatchery locations in coastal watersheds. In the past hatcheries were designed with gravity flow water supplies, but in more recent years pumping the water has proven feasible. Because of the acceptance of pumping, naturally impounded waters are...
This report is a description of the neoplasm disease affecting the native oyster and bay mussel in Yaquina Bay. It lists actions taken to study the disease further, and assures the public that the disease is under control.
This report is an update of shellfish investigations from April 1967 to March 1970. It includes the results of bay clam surveys for Yaquina, Siuslaw, and Umpqua bays, and harvest numbers for razor clams in both personal-use and commercial fisheries. This report also contains a summary of beach surveys for...
Since 1962 people holding intertidal, nonfood invertebrate collecting permits have been required to report the number of animals harvested. This report summarizes collecting activities and trends for the calendar year 1968.
This report summarizes 1967 collecting activities for intertidal non-food invertebrates. It discusses collecting permits issued, number of animals collected, and collecting intensity by area, making frequent comparisons to the 1966 data.
This document summarizes investigations of the effluent discharge from a nearby pulp mill into Coos Bay. It discusses discovery of the discharge, but focuses on its effects on gaper clams in the bay.
Personal-use razor clam diggers were sampled on alternate minus tides from April to September. The number of diggers and the number and age composition of clams dug were noted. Wastage was sampled each tide series.
Razor clams are found in isolated areas all along the Oregon coast. However, 90% of the harvest takes place on the Clatsop Countty beaches. Along the rest of the coast, digging is sporadic and of minor importance. This report summarizes the data for 1967 for several beaches south of Seaside....