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Showing 1 to 20 of 59 for “"Columbia River"”.
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Talus Features of the Middle Columbia River: Typological and Locational Analyses
The form and function of talus features of the Columbia Plateau are the subject of archaeological investigations and cultural resource evaluation and protection programs. Depressions excavated in talus slopes, most often circular to oval in shape, are called talus pits. Pit features are also …
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The effects of metal contamination on larval white sturgeon in the upper Columbia River
… transmontanus) populations in the upper Columbia River (UCR) face many of the same factors. White sturgeon in this system have been declining for decades due to a lack of recruitment to the population, despite evidence of spawning and early larval survival in the wild. Early life stage …
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Patterns of variation in the benthic macroinvertebrate community of the Upper Columbia River, WA
… and seasonal patterns in large impounded rivers is relatively limited in scope. In the Upper Columbia River, WA, the BMI community is of particular concern due to hypothesized starvation of native fish larvae. The population of white sturgeon (Acipenser transmontanus) which inhabits the …
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Geomorphic Consequences of Hydroelectricity and Transportation Development near Celilo Falls, Lower Mid-Columbia River, Washington
Along the Columbia River, hundreds of miles of transportation infrastructure and over sixty hydroelectric dams have been constructed. This altered a rich cultural landscape with evidence of 10,000 years of continuous occupation. Researchers have attempted to understand the impacts of anthropogenic …
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Passage Route Survival and Behavior of Juvenile Salmon at Priest Rapids Dam, Columbia River, WA
Columbia River hydropower is an economic mainstay of the Pacific Northwest. However, it is well known that the construction of hydropower dams has added anthropogenic pressure to Columbia River salmon populations. Juvenile salmon that pass through powerhouse turbines at large hydropower dams …
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Invertebrate drift in the upper Columbia River with implications for young-of-the-year white sturgeon
… sturgeon (Acipenser transmontanus) in the upper Columbia River have been in decline for over 60 years and are listed as critically endangered by the International Union for Conservation of Nature. Annual spawning produces dispersing larvae; however, recruitment into the juvenile age class has not …
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Lithic Technological and Functional Variability between Mesa and Riverine Environments in the Mid-Columbia River Basin
… to compare variability between pre-contact riverine and hinterland Mesa archaeological resources of the mid-Columbian River Basin in Central Washington. To test the developed model, the study follows suggestions made by Dr. William Smith (1977:82) to “develop a testable hypothesis” using …
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Delay of Spring Snowmelt due to Storm-Induced Changes in Snowpack, Columbia River Headwaters, Western Montana, USA
… and air temperature data for 33 stations in the Columbia River headwaters. The addition of pore space has a greater impact of delaying snowmelt than does the addition of cold content, with snow accumulation responsible for 86% of the collective energy deficit imposed on the snowpack during storm …
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Delay of Spring Snowmelt due to Storm-Induced Changes in Snowpack, Columbia River Headwaters, Western Montana, USA
… and air temperature data for 33 stations in the Columbia River headwaters. The addition of pore space has a greater impact of delaying snowmelt than does the addition of cold content, with snow accumulation responsible for 86% of the collective energy deficit imposed on the snowpack during storm …
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Supply chain security along the Columbia River : an analysis of maritime supply chain security with respect to communication between security experts
… the Regional Maritime Security Coalition of the Columbia River, realize the potential of these professionals, who track and coordinate cargo containers as they move through a supply chain, to enhance security of maritime cargo. In order to utilize these supply chain logistic professionals in a …
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