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Browsing by Subject "Columbia River"
Now showing items 21-40 of 41
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An examination of the form and variability of manganese oxide in Columbia River suspended material (2001-05-07)Suspended particulate matter (SPM) in the Columbia River is a mixture of particles of several origins having varying physical and biogeochemical properties. The relative abundances of these freshwater particles changes ...
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(2010-04-22)Despite evidence that juvenile Chinook salmon (Oncorhynchus tshawytscha) utilize North Pacific estuaries for growth and salinity acclimation, research in the Columbia River estuary has lead to opposing hypotheses about t ...
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(Public Library of Science, 2013-01-11)Most modeling and statistical approaches encourage simplicity, yet ecological processes are often complex, as they are influenced by numerous dynamic environmental and biological factors. Pacific salmon abundance has bee ...
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(Boston, J. E. Tilton and Co., 1866)
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(Portland, Or. : Bonneville Power Administration, 2000-05)This document is the 1998 annual progress report for studies of Pacific lampreys (Lampetra tridentata) conducted by the Confederated Tribes of the Umatilla Indian Reservation (CTUIR), Columbia River Inter-Tribal Fish C ...
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(1971-11-03)Hydrographic and bathythermograph data taken off the Oregon coast during a two week period in August of 1969 were analyzed to determine if heat content and mixed layer depth may be used as indicators of Columbia River ...
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(1973-05-25)In this study methods were developed for the prediction of wave conditions that are hazardous to navigation at river entrances, with emphasis on applicability to the Columbia River. There are two basic components to t ...
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(1966-01-11)
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(1967-08-22)Levels of ⁶⁵Zn in water, sediments, plants, and animals in Alder Slough, a small ecosystem in the Columbia River Estuary, were determined periodically during a one year period. Concentrations of total Zn in organisms ...
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(1965-12-10)
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(2012-04-25)In transboundary water resources policy and management situations, such as the governance of the Columbia River Basin, complex social, ecological, and economic factors seem to be in irreconcilable competition with one an ...
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(The Oregon Water Conference, 2011-05-25)The Columbia River Treaty has been in effect for over 45 years, but its future is uncertain. Starting in 2014, Canada and the United States will have the opportunity to announce ten years’ notice for termination of the ...
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(Springer, 2012-06)In this study, we examine salinity stress tolerances of two populations of the invasive species New Zealand mud snail Potamopyrgus antipodarum, one population from a high salinity environment in the Columbia River estuar ...
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(Institute for Natural Resources, 2005-05)In recent years, depletion of sands in the nearshore environment along the northern Oregon and southwest Washington coasts has been documented. This erosion raises concerns about protection of economic and ecological res ...
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(Oregon State University. University Advancement., 2010)
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(2012-05-29)Recent research conducted throughout the Northern California Current (NCC) on the ecology of Pacific salmon (Oncorhynchus spp.) indicates that variable ocean conditions affect the community composition of zooplankton in ...
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(2012-09-05)As the second largest river in the U.S., the entrance to the Columbia River is home to some of the most extreme wave conditions on the Pacific Coast. Winter storms commonly generate waves 6-8 m in height, which in combin ...
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(2007-07-19)The mouth of the Columbia River (MCR) has a longstanding reputation of hazardous navigational conditions. This reputation has been developing since the first ship, the Columbia, traversed through the inlet in 1792. The ...
Now showing items 21-40 of 41
