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Owl Habitat and Population Trends
The Conservation Strategy
The Current Situation
36 other sections not shown
20 pairs adaptive management Allee effect amount of suitable appendix Arcata barred owls birds BLM lands breeding Bureau of Land canopy Cascades clearcuts cluster comm Committee Conservation Biology conservation strategy Corvallis decline demographic densities dispersal distribution District Douglas-fir ecology environmental estimates extinction Forest lands Forsman fragmentation guidelines habitat fragmentation habitat loss HCAs home ranges inches in d.b.h. juvenile Klamath known pairs Land Management landscape located logging management plans Meslow monitoring National Forest National Park nest northern spotted owl number of pairs occupancy old-growth forests Olympia Olympic Peninsula Oreg Oregon Coast Range owl pairs owl population Pacific Northwest pairs of owls Portland prey private lands rates redwood reproductive Roseburg RSAs sample silvicultural SOHAs species spotted owl habitat spotted owl management stands study area suitable habitat suitable owl habitat surveys survival timber harvest trees unpubl viability Washington Wildlife Biologist