Eleven cruises were conducted on the Oregon continental slope from April 1973 to March 1975 to assess the biology and ecology of the Tanner crab, Chionoecetes tanneri Rathbun. Bathymetric and seasonal analysis of the distribution of adult Tanner crabs west of Coos Bay, Oregon, revealed no segregation of sexes or...
This investigation examined the community structure of two intertidal sedimentary environments on the Oregon coast in terms of species composition and vertical distribution.
A coring device was used to obtain samples from two levels above MLLW in each beach on four occasions. Of the 54 taxa found, 46.2% were crustaceans,...
Ecological and production studies of Prosimulium caudatum Shewell, P. dicum Dyar and Shannon, Simulium arcticum Malloch and S. canadense Hearle (Diptera: Simuliidae) were made in 1971 and 1972 in three streams near Corvallis, Oregon. The purpose of the study was to characterize the biology and population dynamics of larvae, and...
This volume results from an experiment in data retrieval. During the initial stage of the Coniferous Forest Biome the authors were asked to provide access to the literature on mammals as it pertained to the interests of the Biome investigation. One constraint was that the total number of entries should...
Numerous isolates of Armillaria mellea were obtained within
a 250 by 450 foot Study Area in a ponderosa pine plantation in central
Oregon. These isolates were recovered from roots of armillaria-killed
young-growth pine, from large stumps of the former pine
overstory, including roots away from the stump proper, and from...
The uptake, tissue distribution and retention patterns of
cadmium, mercury and zinc were examined in the freshwater mussel,
Margaritifera margaritifera. All three of these heavy metals are
found in the environment. Both cadmium and mercury are toxic at
low environmental concentrations. Zinc may also be toxic at low concentrations
but...
Controlled flow reductions of 75% apportioned over
four two-week intervals were studied during the summers of
1975 and 1976 on the North Fork of Elk Creek, an Oregon
coastal stream. The effects of reduced flows on invertebrate
drift, insect benthos, and the available food for
juvenile salmonids were measured.
Invertebrate...