Detritus plays an important role in the marine ecosystem. It forms a significant fraction of the available food sources (Darnell, 1958, 1961 , 1967; Gant et. al, 1971; Heald
1971; Lenz, 1977; E. P . Odum and Dela Cruz, ...
This was the first diet study on the shiner surfperch and the staghorn sculpin in the Umpqua River Estuary, Oregon. Gammarid amphipods, teleosts, and ghost shrimp were the most important food items of the staghorn sculpin ...
Laferriere, Alison Mariah, 1976-(University of Oregon, 2007-12)
Langmuir circulation cells are wind generated surface currents, which take the form of alternating clockwise and counter clockwise rotating helical cells. Models suggest that organisms and particles may be retained in the ...
The Dall porpoise (Phocoenoides dalli True) is a small, deep-bodied and easily identifiable cetacean found in the northern North Pacific Ocean and adjacent waters including the Gulf of Alaska, Bering Sea, Sea of Okhotsk, ...
Cyanobacteria are thought to have evolved during the early Precambrian, 2.5-3.8 billion years ago, when there were very high levels of UV radiation reaching the Earth's surface due to a lack of absorbing gases int he ...
Pollard, Anne M. (Anne Marie), 1984-(University of Oregon, 2008-12)
Saddle Rock, with an estimated 86,300 birds, was the third largest colony of
Leach's Storm-petrels (Oceanodroma leucorhoa) in Oregon in 1988. This colony is
uniquely vulnerable to terrestrial predation due to its contiguity ...
Two genera of fishes in the family Salmonidae have stimulated considerable biological interest on the Pacific coast of North America. The anadromous life histories of both the Pacific salmons (Oncorhynchus spp.) and the ...
An estuary is an interface where mixing of river and sea water occurs, often within the confines of an embayment. The abrupt environmental changes between these two environments pose a multiplicity of stresses to the ...
Estuaries are individually unique ecosystems, each with specific environmental characteristics. There are, however, some generalizations that can be made describing estuaries overall. Caspers (1967) gives four features ...
Phytoplanktonic species face a serious problem in balancing photosynthetic light requirements with nutrient needs. Optimal light intensities are found toward the surface, while nutrients are usually in greater concentrations ...