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University of Nebraska - Lincoln

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Forest management

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Full-Text Articles in Physical Sciences and Mathematics

Black Bear Use Of Forest Roads In Western Washington, Gary W. Witmer Jan 2019

Black Bear Use Of Forest Roads In Western Washington, Gary W. Witmer

United States Department of Agriculture Wildlife Services: Staff Publications

Radiolocations (108) of 20 black bears were used to assess use or avoidance of 3 forest road types in western Washington. Distances of bears to each type of road were compared to distances of 108 random points using t-tests. Females and males avoided 2-lane roads, while only males avoided 1-lane roads, the most common road type in the area. Females, but not males, were located closer to overgrown, spur roads than expected. This road type has substantial cover of grasses, forbs, and berry-producing shrubs along with protective tree cover. This situation may provide easy travel for females along with security …

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Cedar Infestation Impacts Avian Communities Along The Niobrara River Valley, Nebraska, January S. Frost, Larkin A. Powell Jul 2011

Cedar Infestation Impacts Avian Communities Along The Niobrara River Valley, Nebraska, January S. Frost, Larkin A. Powell

School of Natural Resources: Faculty Publications

Habitat modification has the potential to cause changes in structure and composition of bird communities. Our goal was to determine the response of Songbird community composition to eastern red cedar (Juniperus virginiana) removal in The Nature Conservancy’s Niobrara Valley Preserve, Nebraska. We used point counts to survey birds in the riparian matrix of grassland and forest habitats. More than 60 species were recorded on surveys during 2004–2005. We also use the program PRESENCE to determine the response of five species to various habitat components, including cedar density: House Wren (Troglodytes aedon), Spotted Towhee (Pipilo maculates …

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Reducing Non-Target Hazards Of Rodenticides In Forest Settings, Wendy M. Arjo, David T. Bryson Jan 2007

Reducing Non-Target Hazards Of Rodenticides In Forest Settings, Wendy M. Arjo, David T. Bryson

United States Department of Agriculture Wildlife Services: Staff Publications

Mammalian damage to forest resources is widespread and causes annual economic loss. Wildlife damage control is very important to the intensified land use practices and the economics of reforestation using seedlings. Reforestation areas provide ideal habitat for many wildlife species. However, animals negatively impact trees more severely during stand establishment than at any other time. While numerous non-lethal and lethal tools are available for large and medium-sized mammals, fewer tools are available for small mammals. The damage caused by these rodent species has in some cases warranted the use of rodenticides to control populations. Rodenticides are effective tools for reducing …

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Characteristics Of Mountain Lion Bed, Cache And Kill Sites In Northeastern Oregon, James J. Akenson, M. Cathy Nowak, Mark G. Henjum, Gary W. Witmer Jan 2003

Characteristics Of Mountain Lion Bed, Cache And Kill Sites In Northeastern Oregon, James J. Akenson, M. Cathy Nowak, Mark G. Henjum, Gary W. Witmer

United States Department of Agriculture Wildlife Services: Staff Publications

We described mountain lion (Puma concolor) habitat characteristics during two studies in the same area of northeastern Oregon during the 1990s. In the first study (1992-1994) we evaluated micro-habitat features associated with 61 diurnal bed sites that were not associated with kills. We used similar techniques in the second study (1996- 1998) to evaluate habitat features at 79 cache sites near lion-killed prey. A dog was used to find 93% of the diurnal bed sites. Radio telemetry triangulation was used in the second study. Characteristics of diurnal bed sites and cache sites were compared with random habitat plots. …

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