Index Catalog // ScholarsArchive@OSU

Competitive interactions and resource partitioning between northern spotted owls and barred owls in western Oregon

Creator:: Wiens, J. David
Abstract:: The federally threatened northern spotted owl (Strix occidentalis caurina) is the focus of intensive conservation efforts that have led to much forested land being reserved as habitat for the owl and associated wildlife species throughout the Pacific Northwest of the United States. Recently, however, a relatively new threat to spotted...
Resource Type:: Dissertation
Full Text:: Resource Partitioning Between Northern Spotted Owls and Barred Owls in Western Oregon by J

Trade-offs between management for fire risk reduction and northern spotted owl habitat protection in the dry conifer forests of southern Oregon

Creator:: Comfort, Emily Julia, 1974-
Abstract:: There is a perceived trade-off between fire risk reduction and northern spotted owl habitat protection in dry-conifer forests in southwestern Oregon. Management options for balancing this trade-off need to be sought at the landscape level. Applied landscape ecology suggests three important features to consider are (1) patch size and configuration...
Resource Type:: Dissertation
Full Text:: reduction and northern spotted owl habitat protection in dry-conifer forests in southwestern Oregon

Demography and habitat selection of northern spotted owls in post-fire landscapes of southwestern Oregon

Creator:: Clark, Darren A.
Abstract:: Several large wildfires in southwestern Oregon during the summers of 2001 and 2002 provided the opportunity to investigate the impacts of wildfire on northern spotted owls (Strix occidentalis caurina). I used radio-telemetry and demographic surveys to describe demographic performance and habitat selection of spotted owls in the areas burned by...
Resource Type:: Masters Thesis
Full Text:: . NORTHERN SPOTTED OWL HABITAT SELECTION IN POST-FIRE LANDSCAPES OF SOUTHWESTERN OREGON.……...………..…...85

Local weather, regional climate, and population dynamics of northern spotted owls in Washington and Oregon

Creator:: Glenn, Elizabeth M.
Abstract:: Since the early 1990s, declines in northern spotted owl (Strix occidentalis caurina) populations have been documented through extensive field surveys and range-wide demographic analyses. Although loss of late-successional forest has been credited as the primary cause for spotted owl population declines, environmental variation has also been shown to influence vital...
Resource Type:: Dissertation
Full Text:: ) maps on 6 northern spotted owl study areas in Oregon and Washington, 1985- 2005

Age-specific and lifetime reproductive success of known age Northern Spotted Owls on four study areas in Oregon and Washington

Creator:: Loschl, Peter J.
Abstract:: Northern Spotted Owls (Strix occidentalis caurina) are a long-lived forest owl and range-wide declines in their numbers have resulted in the species being listed as threatened under the endangered species act. While many studies have been focused on population trends and reproductive performance of Spotted Owls from different age-classes, none...
Resource Type:: Masters Thesis
Full Text:: Areas in Oregon and Washington. Abstract approved: Eric D. Forsman Northern Spotted Owls

Demography, home range, and habitat selection of northern spotted owls in the Ashland Watershed

Creator:: Schilling, Jason W.
Abstract:: Northern Spotted Owls (Strix occidentalis caurina) inhabit productive forests that historically supported frequent, large, variable-severity fires in the Klamath province of southwestern Oregon occur in complex. The potential for high-severity wildfire remains high throughout this region, so remaining spotted owl habitat is at risk. An adaptive management approach to fire...
Resource Type:: Masters Thesis
Full Text:: history that differs from northern spotted owl habitat found within the dry-forest ecosystems of the

Distribution and habitat associations of the northern pygmy-owl in Oregon

Creator:: Sater, Dawn M.
Abstract:: I conducted acoustic lure surveys of northern pygmy-owls (Glaucidium gnoma) on transects that were systematically placed in forested areas throughout the state of Oregon. My objectives were to determine if pygmy-owls were associated with particular forest types, ecoregions, or with large-diameter dominant overstory trees. I also examined temporal variation in...
Resource Type:: Masters Thesis
Full Text:: AND HABITAT ASSOCIATIONS OF THE NORTHERN PYGMY-OWL IN OREGON INTRODUCTION Management of late

Landscape composition around northern spotted owl nests, central Cascade Mountains, Oregon

Creator:: Swindle, Keith A.
Abstract:: This study describes the composition of forest landscapes surrounding northern spotted owl (Strix occidentalis caurina) nests in the central Cascade Mountains of Oregon. I compared forest composition around 126 owl nests in 70 pair territories with forest composition around 119 points drawn randomly from all terrestrial cover-types, and around 104...
Resource Type:: Masters Thesis
Full Text:: Around Northern Spotted Owl Nests. Central Cascade Mountains. Oregon. Abstract approved: - E. Charles

Spotted owls, great horned owls, and forest fragmentation in the central Oregon Cascades

Creator:: Johnson, David Harold, 1956-
Resource Type:: Masters Thesis
Full Text:: Klamath, Western Cascades, and Coast Range provinces in Oregon. They found spotted owl nest landscapes to

The range expansion of the northern barred owl : an evaluation of the impact on spotted owls

Creator:: Kelly, Elizabeth G.
Abstract:: Since their range expansion into the Pacific Northwest, anecdotal evidence suggests that northern barred owls (Strix varia varia) may be displacing northern spotted owls (Strix occidentalis caurina). My objectives were to characterize barred owl distribution and population increase in Oregon, investigate spotted owl territory performance before and after barred owl...
Resource Type:: Masters Thesis
Full Text:: Oregon. 7 Table 1. Description of Northern Spotted Owl Demography Study Areas in Washington and

ScholarsArchive@OSU

Competitive interactions and resource partitioning between northern spotted owls and barred owls in western Oregon

Trade-offs between management for fire risk reduction and northern spotted owl habitat protection in the dry conifer forests of southern Oregon

Demography and habitat selection of northern spotted owls in post-fire landscapes of southwestern Oregon

Local weather, regional climate, and population dynamics of northern spotted owls in Washington and Oregon

Age-specific and lifetime reproductive success of known age Northern Spotted Owls on four study areas in Oregon and Washington

Demography, home range, and habitat selection of northern spotted owls in the Ashland Watershed

Distribution and habitat associations of the northern pygmy-owl in Oregon

Landscape composition around northern spotted owl nests, central Cascade Mountains, Oregon

Spotted owls, great horned owls, and forest fragmentation in the central Oregon Cascades

The range expansion of the northern barred owl : an evaluation of the impact on spotted owls

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