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We analyzed variation in canopy closure around 47 Mexican spotted owl (Strix occidentalis lucida) nest sires and 47 random forest sites on the Coconino National Forest in northcentral Arizona. We mapped distinct habitat polygons on 1:15,840 color aerial photographs, assigned each polygon to one of 4 canopy-closure classes (70%), and measured the area in each canopy class within 5 concentric analysis zones with radii of 0.1, 0.4, 0.8, 1.2, and 1.6 km (delineating rings of about 4, 47, 150, 252, and 352 ha). Landscape composition differed between spotted owl nest and random sites (P 70% canopy-closure class and less area in the 70% canopy predominated Nesting spotted owls selected areas with denser canopy than randomly...
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This layer contains polygon features of protected activity centers (PACS) for Spotted Owls in California. These areas were mapped as directed by the California Spotted Owl Environmental Assessment as interim direction adopted in the Region until the Environmental Impact Statement analysis is complete. Coding is for type of habitat as well as for timber management constraint.
We conducted a survey of spotted owl (Strix occidentalis) ectoparasite richness by examining live and museum specimens of the three subspecies of spotted owl. Seven ectoparasite species from five arthropod orders were collected. A tick (Dermacentor occidentalis), a mite (Euschoengastia sp.), and a flea (Opisodasys vesperalis) were collected, but were presumed to be accidental strays from prey. Strigiphilus lice were found on all the subspecies of spotted owl, while the louse Kurodaia magna was only collected from the northern spotted owl (S. o. caurina). The hippoboscid fly Icosta americana was found on the California spotted owl (S. o. occidentalis); this species had previously been well documented in the northern...
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This dataset represents predicted spotted owl habitat probability of occupancy for the current climate in the Pacific Northwest (USA). This dataset is currently under development and subject to change. Please DO NOT DOWNLOAD THIS DATASET until it has been finalized (please contact carlos@klamathconservation.org for more details) . In Carroll and others (in prep.), we evaluate how a system of reserves can be made resilient to climate change. First, we assess how well the NFP's reserve network currently protects habitat for spotted owl and rare "Survey and Manage" species. Then, we assess how these species will fare under climate change. Our results suggest that the spotted owl acts as fairly good "umbrella" species...
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This dataset represents projected spotted owl habitat probability of occupancy for the climate of 2061-2090 in the Pacific Northwest (USA) based on the mean habitat occupancy predictions from three representative climate projections: lowest warming (GCM GISS_ER with IPCC storyline B1), moderate warming (GCM ECHAM5 SRES with storyline A2), and highest warming (GCM IPSL_CM4 with storyline A2). This dataset is currently under development and subject to change. Please DO NOT DOWNLOAD THIS DATASET until it has been finalized (for more details contact carlos@klamathconservation.org) . In Carroll and others (in prep.), we evaluate how a system of reserves can be made resilient to climate change. First, we assess how well...
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This dataset represents projected spotted owl habitat probability of occupancy for the climate of 2061-2090 based on the mean habitat occupancy predictions from three representative climate projections: lowest warming (GCM GISS_ER with IPCC storyline B1), moderate warming (GCM ECHAM5 SRES with storyline A2), and highest warming (GCM IPSL_CM4 with storyline A2). In Carroll and others (in prep.), we evaluate how a system of reserves can be made resilient to climate change. First, we assess how well the NFP's reserve network currently protects habitat for spotted owl and rare "Survey and Manage" species. Then, we assess how these species will fare under climate change. Our results suggest that the spotted owl acts...
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This dataset represents predicted spotted owl habitat probability of occupancy for the current climate. In Carroll and others (in prep.), we evaluate how a system of reserves can be made resilient to climate change. First, we assess how well the NFP's reserve network currently protects habitat for spotted owl and rare "Survey and Manage" species. Then, we assess how these species will fare under climate change. Our results suggest that the spotted owl acts as fairly good "umbrella" species for protecting localized species. We identify additional coarse-scale priority areas for localized species, protection of which would allow achievement of the goals of the Survey and Manage program while reducing the resources...
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This dataset represents projected spotted owl habitat probability of occupancy for the climate of 2011-2040 based on the mean habitat occupancy predictions from three representative climate projections: lowest warming (GCM GISS_ER with IPCC storyline B1), moderate warming (GCM ECHAM5 SRES with storyline A2), and highest warming (GCM IPSL_CM4 with storyline A2). In Carroll and others (in prep.), we evaluate how a system of reserves can be made resilient to climate change. First, we assess how well the NFP's reserve network currently protects habitat for spotted owl and rare "Survey and Manage" species. Then, we assess how these species will fare under climate change. Our results suggest that the spotted owl acts...


    map background search result map search result map Canopy closure around nest sites of Mexican spotted owls in northcentral Arizona Pacific Northwest Predicted Spotted Owl Habitat Occupancy for Current Climate Pacific Northwest Projected Spotted Owl Habitat Occupancy for 2061-2090 Pacific Northwest Projected Spotted Owl Habitat Occupancy for 2011-2040 Pacific Northwest (USA) Predicted Spotted Owl Habitat Occupancy for Current Climate Pacific Northwest (USA) Projected Spotted Owl Habitat Occupancy for 2061-2090 Sierra Nevada Northern Spotted Owl Protected Activity Centers Canopy closure around nest sites of Mexican spotted owls in northcentral Arizona Sierra Nevada Northern Spotted Owl Protected Activity Centers Pacific Northwest Predicted Spotted Owl Habitat Occupancy for Current Climate Pacific Northwest Projected Spotted Owl Habitat Occupancy for 2061-2090 Pacific Northwest Projected Spotted Owl Habitat Occupancy for 2011-2040 Pacific Northwest (USA) Predicted Spotted Owl Habitat Occupancy for Current Climate Pacific Northwest (USA) Projected Spotted Owl Habitat Occupancy for 2061-2090