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Showing 1 to 20 of 48 for “"North Fork"”.
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Forever Wild: Journeys Through the North Fork
The North Fork of the Flathead River runs for eighty-five miles, starting in southeastern British Columbia and ending in Flathead Lake in northwestern Montana. The river flows through a rugged valley that plays a vital role in the Crown of the Continent Ecosystem. In the United States, the North …
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Forever Wild: Journeys Through the North Fork
The North Fork of the Flathead River runs for eighty-five miles, starting in southeastern British Columbia and ending in Flathead Lake in northwestern Montana. The river flows through a rugged valley that plays a vital role in the Crown of the Continent Ecosystem. In the United States, the North …
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A Survey of the Ephemeroptera of North Fork River, Missouri
… and nymphs were collected from nine sites along North Fork River to determine the species composition. Forty-three species of twenty-five genera were collected: Baetisca lacustris, Eurylophella bicolor, Eurylophella temporalis, Serratella deficiens, Serratella serratoides, Ephemerella aurivilli, …
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Food–web implications of reintroducing anadromous salmonids in reservoirs on the North Fork Lewis River, Washington
… with increasing frequency in the Pacific Northwest. Such reintroductions have already begun or are proposed above three dams on the North Fork Lewis River in Washington State. Spring Chinook Salmon Oncorhynchus tshawytscha and Coho Salmon O. kisutch have been observed rearing in several …
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Middle Ordovician limestones in the valley of the North Fork of the Roanoke River, Montgomery County, Virginia
… overlying sediments. Study of the area in the North Fork of the Roanoke River was begun in the fall of 1950 and the work was continued in the summer of 1951. The lithologic divisions of the Middle Ordovician limestones was mapped. The 15-minute Blacksburg quadrangle was used es a base map with …
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Assessment of Mussel Declines in the Clinch and North Fork Holston Rivers Using Histological Evaluations of Vital Organs
The Clinch River (CR) and North Fork Holston River (NFHR) contain some of the most diverse freshwater mussel assemblages in the United States; however, both rivers are experiencing declines in mussel populations. The first component of this study used histological evaluations and water quality data …
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Life history of the endangered shiny pigtoe pearly mussel, Fusconaia edgariana, in the North Fork Holston River, Virginia
… mussel, was determined in a two-year study at North Holston Ford, North Fork Holston River (NEHRM 86.9) above Saltville, Virginia. Sixty 0.5m² Quadrats indicated a mean density of 10.6 mussels/m², representing 1 species. Six additional species were collect handpicking or in muskrat middens. The …
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Sector-Targeting for Controlling Nutrient Loadings: A Case Study of the North Fork of the Shenandoah River Watershed
… point source, and urban non-point source, in the North Fork watershed. Linear programming optimization models were created to determine an optimal solution that minimized total compliance cost to implement BMPs subject to targeted loading reductions in N and P in the watershed. The optimal …
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Recovery status and chemosensory cues affecting reproduction of freshwater mussels in the North Fork Holston River downstream of Saltville, Virginia
The freshwater mussel fauna of the North Fork Holston River (NFHR) downstream of Saltville, VA declined from at least 24 species, as observed in 1918, to one species in 1974 due to mercury pollution. To determine the degree of recovery of mussels in the NFHR downstream of Saltville, and to provide …
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An Ecotoxicological Evaluation of the North Fork Holston River below Saltville, Virginia and Identification of Potential Stressors to Freshwater Mussels (Bivalvia:Unionidae)
Mercury contamination of the North Fork Holston River below Saltville, Virginia has nearly extirpated most mussel populations. Because natural recovery of these populations has not occurred, this research combined field and laboratory assessments to determine the extent of ecological impairment in …
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Geochemical and Taphonomic Signatures of Freshwater Mussel Shells as Evidence of Mercury-Related Extirpations in the North Fork Holston River, Virginia
… assess the role of mercury contamination in the North Fork Holston River, an aquatic habitat affected by extensive extirpations of mussel populations starting in the early 1970's. Mussel shells (n=366) collected from 5 sites, upstream and downstream of Saltville (where mercury was used from …
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Modeling the potential impacts of climate change on streamflow variability in the North Fork of Elk Creek Experimental Watershed, West-Central, Montana
… regime of West-Central Montana, focusing on the North Fork of Elk Creek, a 6.6 km2 (2.6 mi²) Experimental Watershed. This is important to understand in snowmelt-dominated watersheds, as it is already well documented by current trends and future climate projections that the natural hydrologic …
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Modeling the potential impacts of climate change on streamflow variability in the North Fork of Elk Creek Experimental Watershed, West-Central, Montana
… regime of West-Central Montana, focusing on the North Fork of Elk Creek, a 6.6 km2 (2.6 mi²) Experimental Watershed. This is important to understand in snowmelt-dominated watersheds, as it is already well documented by current trends and future climate projections that the natural hydrologic …
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Cross-compliance as a soil conservation strategy: a case study of the North Fork of the Forked Deer River basin in western Tennessee
… cross-compliance strategies, administered in the North Fork of the Forked Deer River Basin in Western Tennessee, would be likely to provide farmers with benefits great enough to offset costs of compliance, thereby providing an incentive for increased conservation efforts. The cross-compliance …
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Development and Implementation of Integrative Bioassessment Techniques to Delineate Small Order Acid Mine Drainage Impacted Streams of the North Fork Powell River, Southwestern Virginia
… the abandoned mine land (AML) impacts to the North Fork Powell River (NFP) and is utilizing the ecotoxicological rating (ETR) system to delineate these affects to focus restoration efforts. The ETR was developed to summarize the integrative data into a single number ranging from 0 to 100, …
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Habitat models for predicting the occurrence of blotchside logperch (Percina burtoni) and tangerine darters (P. aurantiaca) in the North Fork Holston River and Little River, Virginia
… estimation techniques developed in the Pacific Northwest for small streams were modified to survey about 180 river kilometers (rkm) of the North Fork Holston River and about 16 rkm of lower Little River (Clinch River tributary) in southwestern Virginia during the summer of 1992 and 1993, …
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Age and Growth of the Ozark Hellbender
… Cryptobranchus alleganiensis bishopi, from the North Fork of the White River, Missouri, were calculated by regression from growth of marked and recaptured hellbenders. Growth rates declined steadily after transformation, going from about 74 mm total-length increase per year at 18 months to about …
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Altering the Management of Hydroelectric Facilities in California to Account for Climate Change
… the Kern River and a conventional system on the North Fork Feather River. The Kern River is at lower elevation than the North Fork Feather River. The amount of energy produced by the Kern Canyon project has decreased from 559,560 mega-watt hours in 2005 to 15,517 mega-watt hours in 2014. The …
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THE CENTER OF A HOMESTEADING COMMUNITY IN NORTHWEST MONTANA: ARCHAEOLOGICAL INVESTIGATIONS ON THE POLEBRIDGE SCHOOLHOUSE
… lively community of homesteaders residing in the North Fork Valley of the Flathead River during the early 20th century. 3,704 individual artifacts in the form of metal, glass, ceramic and faunal remains, tell of life during this time period. The research goals of this thesis have three objectives: …
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THE CENTER OF A HOMESTEADING COMMUNITY IN NORTHWEST MONTANA: ARCHAEOLOGICAL INVESTIGATIONS ON THE POLEBRIDGE SCHOOLHOUSE
… lively community of homesteaders residing in the North Fork Valley of the Flathead River during the early 20th century. 3,704 individual artifacts in the form of metal, glass, ceramic and faunal remains, tell of life during this time period. The research goals of this thesis have three objectives: …
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