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Filtering by: Subject Spotted owl -- Nests -- Oregon Advisor Forsman, Eric D.

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
Estimation of Population Age Structure, Detection Probability, and Density of Red Tree Voles in Oregon

Creator:

Marks-Fife, Chad A.

Abstract:

Red tree voles (Arborimus longicaudus) are a unique species of Arvicoline rodent found in western Oregon and northwest California. Their preferred habitat is mature and old-growth coniferous forest dominated by Douglas-fir (Pseudotsuga menziesii). Tree voles are an important prey item for northern spotted owls and many other predators, but are...

Resource Type:

Masters Thesis

Full Text:

regurgitated by spotted owls in Oregon. We found that the age distribution of tree voles in spotted owl