نتایج جستجو برای: forest service
تعداد نتایج: 431278 فیلتر نتایج به سال:
associated natural enemies in the aftermath of invasion: implications for biological control Jian J. Duan*, Leah S. Bauer, Kristopher J. Abell, Michael D. Ulyshen and Roy G. Van Driesche United States Department of Agriculture, Agricultural Research Service, Beneficial Insects Introduction Research Unit, Newark, DE 19713, USA; USDA Forest Service, Northern Research Station, Lansing, MI 48910, U...
Production Economics of Private Forestry: A Comparison of Industrial and Nonindustrial Forest Owners
A concern in the forestry literature is the perceived difference in production behavior between industrially owned forest land and land managed by nonindustrial private forest (NIPJ?) owners (Clawson; Binkley; USDA Forest Service). For instance, in the southern United States, a large share of the region’s softwood timber production (35%) comes from the relatively small share of forested acreage...
1 USDA Forest Service, Rocky Mountain Research Station, Fort Collins, CO 80526, USA 2 USDA Forest Service, Alaska Region, Anchorage, AK 99503, USA; and Department of Zoology & Physiology, University of Wyoming, Laramie, WY 80271, USA 3 Department of Environmental Science, Policy & Management, University of California, Berkeley, CA 94720, USA 4 School of Biological and Biomedical Sciences, Durha...
A raging inferno consumed more than 160,000 acres of national forest north of Los Angeles earlier this month, causing extensive property damage and killing two firefighters before it was eventually snuffed. Fighting these so-called megafires that burn on public lands is the purview of the National Forest Service, and on August 14 th , Tom Vilsack, the Secretary of the Department of Agriculture,...
A minor change involves a brief note on the addition of an exposure scenario for a small mammal consuming contaminated grass (Section 4.2.2.3). Based on comments from peer-reviewers, this scenario was added to Forest Service risk assessments during 2006. A more substantial modification has been made to Section 4.4 (Risk Characterization for Ecological Effects). This modification involves a much...
a Rocky Mountain Research Station, United States Forest Service, Moscow, ID, United States b Forest, Rangeland, and Fire Sciences, University of Idaho, Moscow, ID, United States c McCall Outdoor Science School, University of Idaho, McCall, ID, United States d Forest and Wildlife Ecology, University of Wisconsin, Madison, WI, United States e School of Forest Resources and Environmental Science, ...
Robert E. Keane USDA Forest Service, [email protected] Follow this and additional works at: http://digitalcommons.unl.edu/jfspresearch Part of the Forest Biology Commons, Forest Management Commons, Natural Resources and Conservation Commons, Natural Resources Management and Policy Commons, Other Environmental Sciences Commons, Other Forestry and Forest Sciences Commons, Sustainability Commons, a...
Spatial analyses of ecosystem system services that are directly relevant to both forest management decision making and conservation in the subtropics are rare. Also, frameworks that identify and map carbon stocks and corresponding forest management drivers using available regional, national, and international-level forest inventory datasets could provide insights into key forest structural char...
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