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Showing 1 to 20 of 132 for “"Beaver"”.
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ECOHYDROLOGICAL MODELING OF BEAVER DAMS
Beavers (Castor canadensis and C. fiber) are expanding in their native range in North America and Eurasia and are expanding their range into urban environments and the Arctic tundra. Outside their natural range, they are also in Southern Patagonia because of historic releases in the fur industry. …
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Dam dimensions and surface porosity affect the water storage capacity of Beaver dam analogs compared to natural Beaver dams
… strategies. My study compares water retention by Beaver Dam Analogs (BDAs) to natural beaver dams and undammed control reaches. I compared how dam dimensions affect the hydraulic performance of both BDAs and beaver dams, revealing gaps in research on their comparative effectiveness. My study was …
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Channel geomorphology relationships for the Beaver Creek watershed
… from Davis to Bismarck passes through the Beaver Creek watershed, located in Tucker County, West Virginia, which has been heavily affected by historic mining, deteriorating the water quality conditions of the Beaver Creek watershed. Due to the construction of Corridor H, some of the streams …
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The status of the beaver in Virginia 1947
no abstract provided by author
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The helminthfauna of the beaver in western Maryland
… were (1) to survey the helminthfauna of the beaver, <i>Castor canadensis</i>, collected in western Maryland, particularly Garrett County, (2) to relate the helminth infections to sex, age, weight, and general condition of the beaver, and (3) to record any evidence of gross pathology involving …
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Potential beaver colony density in parts of Québec
… and hydrographic variables to observed beaver colony densities were developed for 3 study areas in Quebec where the effects of trapping on beaver densities were considered negligible. The first two study areas were located in mature northern hardwood forest. This research focused …
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Habitat Use by Beaver Along the Big Sioux River
Habitat utilization and lodge site selection by beaver (Castor canadensis) were investigated during 1985 and 1986 along the Big Sioux River in eastern South Dakota. Because livestock grazing has affected the number and size of trees available for beaver use, the study area was portioned into …
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Beaver as drivers of hydrogeomorphic and ecological processes in a mountain valley
… and semi-aquatic environments of North America, beaver (Castor canadensis) affect landscape structure and dynamics at a level rivaled only by humans. The objective of this dissertation is to identify the influence of beaver dams on hydrologic, geomorphic, and ecological processes in a mountain …
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Beaver (Castor Canadensis) Impacts on Herbaceous and Woody Vegetation in Southeastern Georgia
North American beavers are considered ecosystem engineers. Their activities can quickly and drastically alter habitat properties and perhaps permit highly aggressive colonizing plants, notably non-native species, to invade and potentially dominate. This study examined if beavers in southeastern …
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Geology and isotope geochemistry of the Beaver-Temiskaming Silver Mine, Cobalt, Ontario
Silver veins at the Beaver-Temiskaming mine are economic in Archean mafic volcanic and intercalated base-metal sulphide-rich sedimentary rocks, but uneconomic in the Proterozoic Nipissing diabase sill. Textural and isotopic evidence indicate a paragenetic succession of silicates, …
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Structural Evolution of the Beaver Lodge Portion of the Nesson Anticline, North Dakota
<p>The structural development in the area of Beaver Lodge Field, Williams County, North Dakota, has been determined from Cambrian (Deadwood) through Late Cretaceous (Greenhorn) time. Detailed structural data defines two areas of structural closure occurring along a basement structural trend. One of …
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Population Status of Beaver on the Free-running Missouri River in Southeastern South Dakota
One hundred sixty two beaver (Castor canadensis) harvested by trappers from the free-running Missouri River in southeastern South Dakota were examined from fall 1974 to spring 1976. Ninety two were males and 70 were females (131:100 sex ratio). Age specific sex ratios were not significantly …
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Ecosystem engineering: beaver and the population structure of Columbia spotted frogs in western Montana
… 2006 Wildlife Biology ECOSYSTEM ENGINEERING: BEAVER AND THE POPULATION STRUCTURE OF COLUMBIA SPOTTED FROGS IN WESTERN MONTANA Chairperson: Lisa Eby Beavers (Castor canadensis) are considered ecosystem engineers, altering hydrologic regimes, ecosystem processes, and modifying community …
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Ecosystem engineering: beaver and the population structure of Columbia spotted frogs in western Montana
… 2006 Wildlife Biology ECOSYSTEM ENGINEERING: BEAVER AND THE POPULATION STRUCTURE OF COLUMBIA SPOTTED FROGS IN WESTERN MONTANA Chairperson: Lisa Eby Beavers (Castor canadensis) are considered ecosystem engineers, altering hydrologic regimes, ecosystem processes, and modifying community …
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Beaver moderated fire resistance in the North Cascades and potential for climate change adaptation
… riparian zones can reduce burn intensity. Beaver, with their unique ability to build dams, can restore incised and degraded streams, store water, and expand wetland environments, potentially decreasing wildfire intensity, fire spread and create fire breaks across the landscape. My objective …
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Effects of beaver dam analogs on stream ecosystem function of Crab Creek, Washington State
<p>This study documents the effects of beaver dam analogs (BDAs) on nutrient transport, fish community composition, macroinvertebrate drift, and benthic macroinvertebrate communities of Crab Creek, WA, USA. In 2019, the U.S. Fish and Wildlife Service (USFWS), and Natural Resource Conservation …
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Hydrology of the Beaver Creek watershed using the TR-20 model and the HEC-HMS program
… H section from Davis to Bismarck passes through Beaver Creek watershed, Tucker County, West Virginia, which was heavily affected by the historical mining, deteriorating the water quality conditions of the Beaver Creek. To improve the water quality of Beaver Creek, identification of the sources of …
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