Underestimating risks to the northern spotted owl in fire-prone forests: response to Hanson et al.
نویسندگان
چکیده
THOMAS A. SPIES,∗††† JAY D. MILLER,† JOSEPH B. BUCHANAN,‡ JOHN F. LEHMKUHL,§ JERRY F. FRANKLIN,∗∗ SEAN P. HEALEY,†† PAUL F. HESSBURG,§ HUGH D. SAFFORD,‡‡ WARREN B. COHEN,∗ REBECCA S.H. KENNEDY,∗ ERIC E. KNAPP,§§ JAMES K. AGEE,∗∗ AND MELINDA MOEUR∗∗∗ ∗U.S. Department of Agriculture Forest Service, Pacific Northwest Research Station, 3200 Jefferson Way, Corvallis, OR 97331, U.S.A. †U.S. Department of Agriculture Forest Service, Fire and Aviation Management, Pacific Southwest Region, McClellan CA 95652, U.S.A. ‡Washington Department of Fish and Wildlife, Wildlife Management Program, 600 Capitol Way North, Olympia, WA 98501, U.S.A. §U.S. Department of Agriculture Forest Service, Pacific Northwest Research Station, 1133 N Western Avenue, Wenatchee, WA 98801, U.S.A. ∗∗School of Forest Resources, University of Washington, Seattle, WA 98195, U.S.A. ††U.S. Department of Agriculture Forest Service, Rocky Mountain Research Station, 507 25th Street, Ogden UT 84401, U.S.A. ‡‡U.S. Department of Agriculture Forest Service, Pacific Southwest Region, Vallejo, CA 94592, U.S.A. §§U.S. Department of Agriculture Forest Service, Pacific Southwest Research Station, Redding, CA 96002, U.S.A. ∗∗∗U.S. Department of Agriculture Forest Service, Region 6, P.O. 3623, Portland, OR 97208, U.S.A.
منابع مشابه
Diet and Home-range Size of California Spotted Owls in a Burned Forest
Fire is pervasive in forests used by California Spotted Owls (Strix occidentalis occidentalis) and their prey species. We assessed the diets and sizes of the breeding-season home ranges of seven Spotted Owls occupying burned forests in the southern Sierra Nevada 4 years after a fire and compared the results with data from previous studies in unburned forests within the range of the subspecies. ...
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The Northern Spotted Owl (Strix occidentalis caurina) is an emblematic, threatened raptor associated with dense, late-successional forests in the Pacific Northwest, USA. Concerns over high-severity fire and reduced timber harvesting have led to programs to commercially thin forests, and this may occur within habitat designated as “critical” for spotted owls. However, thinning is only allowed un...
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We directly observed roost and nest site selection in a population of northern spotted owls (Strix occidentalis caurina) in northwestern California during 1985-89. Because of potential biases caused by use of radio telemetry in previous studies, we examined habitat use relative to habitat availability at a level not previously reported for spotted owls. Spotted owls selected coniferous forest c...
متن کاملChapter 4: Population Distribution and Trends of California Spotted Owls
Distribution Geographic Range Following Verner et al.’s (1992) technical assessment of the California spotted owl (CASPO), we divided the range of the California spotted owl (Strix occidentalis occidentalis) into two major physiographic provinces: the Sierra Nevada and the mountains of southern California (Tehachapi Pass was the demarcation between the regions). Verner et al. (1992) noted that ...
متن کاملChapter 26
Landscape fragmentation can be a major threat to the persistence of species with very specific habitat and area requirements (e.g., Wilcove et al., 1986). Such a species is the northern spotted owl (Strix occidentalis caurina), whose populations are experiencing fragmentation at a number of spatial scales. The analyses we discuss here focus on the geographic scale (Lord and Norton. 1990) and ar...
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ورودعنوان ژورنال:
- Conservation biology : the journal of the Society for Conservation Biology
دوره 24 1 شماره
صفحات -
تاریخ انتشار 2010