Groundfish surveys off Oregon were conducted over a four year period (1971-74)
between the Columbia River and Cape Blanco. Primary purpose of the surveys was to obtain estimates of biomass of important groundfish occupying the continental shelf and upper continental slope.
Survey design was based on a 5 x 5...
Reports on an investigation of a request by the C.D. Johnson Lumber Company to construct a log boom two miles below Toledo on the Yaquina River. Local residents were concerned that the boom would damage clam beds. Includes a hand-drawn map of the area.
California and Steller sea lions (Zalophus californianus, Eumetopias jubatus, respectively) are considered sentinel species because they have long life spans, are long-term coastal residents, feed at high trophic levels, and have large blubber stores that serve as depots for anthropogenic toxicants. There are few studies on sea lion health and...
"This report describes for the first time, megalopal stages of the commercially important pink shrimp, Pandalus jordani, with a comparison with previously published larval studies. This will benefit future workers rearing this species' larvae and also in identification of its megalopae from plankton samples." Describes two post-larval stages. Called "Information...
Oregon pink shrimp (PandaZus jordani) landings in 1978 were a record 56,997,105 pounds (25,840 mt) over 8 million pounds (17%) more than was landed in 1977, the previous record year (Figure 1, Table 1). Increased effort was probably the main contributing factor to the record landings. A total of 186...
"This report covers studies conducted on Dungeness crab larvae from July 1, 1969, through June 19, 1970. Principal objectives were to determine the following: (1) the effects of crab larval concentration on growth and survival; (2) the effects of light intensity on the swimming behavior of crab larvae; (3) the...
This volume is divided into two parts. Part 1 discusses estuary and estuarine habitat classification as a basis for resource planning. A hierarchical classification system is presented and suggested as an appropriate system for Oregon estuaries. Part 2 of the report suggests guidelines for estuarine resource inventories, including a list...