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Filtering by: Creator Olsen, Raymond Academic Affiliation Fisheries and Wildlife Degree Field Wildlife Science

Population Genetics of American Pika (Ochotona princeps) : Investigating Gene Flow and Genetic Diversity Across Multiple, Complex Landscapes

Creator:

Castillo, Jessica A.

Abstract:

American pikas (Ochotona princeps) are considered an indicator species of climate change. Adaptations for cold climates and active winters make pikas particularly sensitive to increasing temperatures. This, combined with evidence that multiple historically occupied populations have been extirpated within the past century, contributed to American pikas becoming a focal species...

Resource Type:

Dissertation

Full Text:

& Olsen 2004) was used to generate spatially-balanced survey sites within potential pika habitat. A more
Passive acoustic monitoring of owls: two studies in forested landscapes of the Pacific Northwest

Creator:

Duchac, Leila S.

Abstract:

Nearly all birds communicate through sound, and there has been much study of avian populations and communities using song and other vocalizations. Owls are no exception as they defend territories, advertise for mates, and defend against threats using various vocalizations. However, due to their generally nocturnal habits, some owl species...

Resource Type:

Masters Thesis

Full Text:

. Raymond J. Davis provided essential help in GIS, from study design to covariate development to last
Multiscale relationships of wintering birds with riparian and wetland habitat in the Willamette Valley, Oregon

Creator:

Adamus, Paul R.

Abstract:

Relatively little is known about wintering bird communities in lowlands of the Pacific Northwest, yet, the condition of winter habitats potentially can pose a major constraint on bird populations. I initiated a study to determine: (1) Which avian species use lowland riparian and wetland habitats in the Willamette Valley during...

Resource Type:

Dissertation

Full Text:

McComb, Raymond O'Connor, Dave Wallin, and members of my committee. Reed Noss, as the committee Chair