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Filtering by: Committee Member Ramsey, Fred Committee Member Anthony, Robert Language English [eng] Rights Statement Copyright Not Evaluated

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
Satellite monitored dive characteristics of the northern right whale, Eubalaena glacialis

Creator:

Nieukirk, Sharon L.

Abstract:

The western North Atlantic population of the northern right whale (Eubalaena glacialis) was severely depleted by whaling over the last century. Despite over fifty years of protection, fewer than four hundred individuals are believed to exist in the North Atlantic. Relatively little is known about the diving behavior, respiratory physiology,...

Resource Type:

Masters Thesis
Foraging ecology of migrant waterbirds, Lake Abert, Oregon

Creator:

Boula, Kathryn Marcile

Abstract:

Seven species of water-dependent birds (northern phalarope, Phalaropus lobatus; American avocet, Recurvirostra americana; Wilson's phalarope, P. tricolor; eared grebe, Podiceps nigricollis; ring-billed gull Larus delawarensis; California gull, L. californicus; and northern shoveler, Anas clypeata) were studied during the fall migrations of 1982 and 1983 to determine the diets and foraging...

Resource Type:

Masters Thesis