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Showing 1 to 19 of 19 for “"Castor canadensis"”.
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The ecological role of beavers (Castor canadensis) in a Southwestern desert stream
The ecological impact of beavers on a stream in the southwestern United States was investigated to determine if beavers have impact on community and ecosystem level processes in a manner similar to what has been documented in more mesic regions. Specifically, my goals were to determine: (1) whether …
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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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Riparian resilience in the face of interacting disturbances: understanding complex interactions between wildfire, erosion, and beaver (Castor canadensis) in grazed dryland riparian systems of low order streams in North Central Washington State, USA
… near extirpation of a keystone riparian species, Castor canadensis (North American beaver). However, increasing frequency of large-scale wildfires and climate change driven weather is altering the severity and scale of riparian disturbance, often shifting highly impacted streams to a stable …
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A damming history: an analysis on the legacy effects of beaver dams on the composition and structure of a montane riparian ecosystem
… As an "ecosystem engineer," the American beaver (Castor canadensis) increases heterogeneity in riparian systems through dam-building activities, resulting in diverse wetland complexes. This study explored the impact that historic, off-channel beaver dams have on the structure and composition of …
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The Rewilding of New York's North Country: Beavers, Moose, Canines and the Adirondacks
… examines the restoration histories of beavers (Castor canadensis), moose (Alces alces americana), and wild canines (Canis spp.) within the Adirondack Highlands of northern New York. Devastated by the depredations of nineteenth century woodsmen, the populations of these large mammals rebounded …
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The Rewilding of New York's North Country: Beavers, Moose, Canines and the Adirondacks
… examines the restoration histories of beavers (Castor canadensis), moose (Alces alces americana), and wild canines (Canis spp.) within the Adirondack Highlands of northern New York. Devastated by the depredations of nineteenth century woodsmen, the populations of these large mammals rebounded …
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Demographics of Western South Dakota Wetlands and Basins
… are dugouts, and 311 were created by beaver (Castor canadensis) activity. There are five-fold fewer basins in western South Dakota than in eastern South Dakota. The wetlands and basins GIS created for this project and the resulting demographic summaries provide a temporal and spatial data …
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Fish and mammals of the lower Calaveras River, Stockton, CA
… included North American river otter (Lontra canadensis), striped skunk (Mephitis mephitis), raccoon (Procyon lotor), Botta's pocket gopher (Thomomys bottae), Califomia vole (Microtus californicus), California ground squirrel (Spermophilus beecheyi), desert cottontail rabbit (Sylvilagus …
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The helminthfauna of the beaver in western Maryland
… 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 helminths. …
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Beaver as drivers of hydrogeomorphic and ecological processes in a mountain valley
… 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 valley. …
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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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Habitat Use by Beaver Along the Big Sioux River
… 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 grazed, …
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Ecosystem engineering: beaver and the population structure of Columbia spotted frogs in western Montana
… WESTERN MONTANA Chairperson: Lisa Eby Beavers (Castor canadensis) are considered ecosystem engineers, altering hydrologic regimes, ecosystem processes, and modifying community structure. Effects of beaver on the spatial pattern of lentic habitat and populations using those habitats have not been …
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Ecosystem engineering: beaver and the population structure of Columbia spotted frogs in western Montana
… WESTERN MONTANA Chairperson: Lisa Eby Beavers (Castor canadensis) are considered ecosystem engineers, altering hydrologic regimes, ecosystem processes, and modifying community structure. Effects of beaver on the spatial pattern of lentic habitat and populations using those habitats have not been …
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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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A Human-Centered Approach to Designing an Invasive Species Eradication Program
… on eradicating the North American beaver (Castor canadensis) from the Tierra del Fuego (TDF) island archipelago in Argentina and Chile. The beaver was introduced in 1946 and has since become a central conservation issue due to its long-lasting changes to local hydrology, nutrient cycling, …
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Wolf Predation: Where and How Wolves Kill Beavers, and Confronting the Biases in Scat-Based Diet Studies
<p>Beavers can be a significant prey item for wolves in boreal systems but how wolves hunt beavers is largely unknown. I inferred how wolves hunt beavers by identifying 22 kill sites using clusters of locations from GPS-collared wolves in Voyageurs National Park, Minnesota. Where wolves killed …
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BRIDGING AQUATIC AND TERRESTRIAL ECOSYSTEMS: ECOLOGY OF SEMI-AQUATIC MAMMALS IN SOUTHERN ILLINOIS
… that correlate with the presence of beaver (Castor canadensis), muskrat (Ondatra zibethicus), mink (Neovison vison), and river otter (Lontra canadensis), including their interactions, resulting in a better understanding of the areas where these semi-aquatic mammals occur and their effects on …
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Fluvial processes, beaver activity, and climate in the greater Yellowstone ecosystem and rock type control on hillslope morphology and soil development in the Sandia Mountains, New Mexico
This dissertation follows the hybrid format as defined by the University of New Mexico's Office of Graduate Studies. The three chapters were written as manuscripts to be submitted to different peer-reviewed journals. Chapter 1 is submitted to the journal Earth Surface Processes and Landforms. …