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Filtering by: Alternative title ssim Circular of information no. 20 Academic Affiliation Fisheries and Wildlife Creator Clark, Darren A. License All rights reserved

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:

). Demographic surveys were used to determine the number of young fledged per pair of spotted owls. I found no
Implications of cougar prey selection and demography on population dynamics of elk in northeast Oregon

Creator:

Clark, Darren A.

Abstract:

Mule deer (Odocoileus hemionus hemionus) and Rocky Mountain elk (Cervus canadensis nelsoni; hereafter elk) populations in northeast Oregon have declined in the past 10 to 20 years. Concurrent with these declines, cougar (Puma concolor) populations have apparently increased, leading to speculation that predation by cougars may be responsible for declining...

Resource Type:

Dissertation

Full Text:

, elk density had almost no effect on population growth rates (r 2 = 0.002). The results of my model