Index Catalog // ScholarsArchive@OSU

Supplemental feeding influences reproductive success of the Hawaiian goose (Branta sandvicensis) at Haleakala National Park, Maui, Hawai'i

Creator:: Tamayose, Joy
Abstract:: Low reproductive success has been typical of high elevation populations of the Hawaiian goose (Branta sandvicensis) or nēnē. Researchers identified predation and inadequate nutrition as limiting factors. Reproductive success remained low in most years despite on-going predator control programs. I used a supplemental feeding program over two breeding seasons in...
Resource Type:: Masters Thesis
Full Text:: : ________________________________________________________________ Robert L. Jarvis Low reproductive success has been typical of high elevation populations

Distribution and habitat use of bull trout following the removal of nonnative brook trout

Creator:: Renner, Dirk
Abstract:: Invasion by nonnative brook trout (Salvelinus fontinalis) often results in replacement of bull trout (Salvelinus confluentus) in western North America, but the causal mechanisms are not well understood. Removal of brook trout from 1992 to 2000 from Sun Creek in southern Oregon, provided an opportunity to investigate the changes in...
Resource Type:: Masters Thesis
Full Text:: Bull Trout Following the Removal of Nonnative Brook Trout Abstract approved: Robert E. Gresswell Gary

Behavioral constraints on harlequin duck population recovery from the Exxon Valdez oil spill in Prince William Sound, Alaska

Creator:: Rizzolo, Daniel J.
Abstract:: I investigated the relationship between harlequin duck (Histrionicus histrionicus) behavior and lack of recovery from the Exxon Valdez oil spill in Prince William Sound, Alaska. First, I evaluated the hypothesis that harlequin ducks in winter have little flexibility to increase foraging time in response to disturbance because they are constrained...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: Daniel D. Roby / 1 Robert L. Jarvis I investigated the relationship between harlequin

Seasonal influences on food availability and diet of coastal cutthroat trout in relation to riparian vegetation

Creator:: Romero, Nicolas
Abstract:: Current riparian management objectives in the Pacific Northwest promote both retention of existing conifers and conversion of hardwood-dominated areas to conifers. Although understanding of relationships between riparian vegetation and salmonid prey availability is growing, temporal variation in these relationships is poorly understood. Seasonal fluxes in availability of aquatic and terrestrial...
Resource Type:: Masters Thesis
Full Text:: Judith L. Li Current riparian management objectives in the Pacific Northwest promote both retention of

Nesting ecology of mallards in the Willamette Valley of Oregon

Creator:: Rickerson, Eric V.
Abstract:: Although widely studied in many portions of North America, little is known about the specific habitat requirements of mallard ducks (Anas platyrhynchos) during the breeding season in western Oregon. I radio-marked 72 female mallards in the Willamette Valley of Oregon in March-April 1995-96 to document wetland habitat selection during pre-nesting...
Resource Type:: Masters Thesis
Full Text:: completion. First, I wish to thank my advisor Dr. Robert L. Jarvis whose guidance and incredible patience

Nesting and foraging ecology of band-tailed pigeons in western Oregon

Creator:: Leonard, Jerome Patrick
Abstract:: Pacific Coast band-tailed pigeons (Columba fasciata) have declined markedly during the past several decades. Despite implementation of increasingly restrictive hunting regulations, populations have shown minimal signs of recovery. I radio-marked 127 adult band-tailed pigeons in the central Oregon Coast Range in April-May of 1993-95 to document nesting chronology and productivity,...
Resource Type:: Dissertation
Full Text:: this research project to completion. First, I wish to thank my advisor and friend Dr. Robert L. Jarvis

Site tenacity, mate retention and sexual dimorphism in Black Terns

Creator:: Stern, Mark A.
Abstract:: Between 1982-1984 I studied site tenacity and mate retention in Black Terns at Sycan Marsh, Lake County, Oregon. I banded 778 adult Black Terns and used this marked population to test the hypotheses that site tenacity and mate retention would be less for Black Terns which nest in variable marsh...
Resource Type:: Masters Thesis
Full Text:: Scientific Association. I thank Dr. Robert L. Jarvis for serving as my major professor, and providing

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

Formation of feeding flocks during winter by dusky and Taverner's Canada geese in Oregon

Creator:: Havel, Loree Hennigar
Resource Type:: Masters Thesis

Ecology of harlequin ducks in Prince William Sound, Alaska, during summer

Creator:: Dzinbal, Kenneth A.
Abstract:: Harlequin ducks (Histrionicus histrionicus) were observed during the summers of 1979 and 1980 in Sawmill Bay, northeast Prince William Sound, Alaska. Harlequins were associated with a short, medium gradient, non-glacial stream (Stellar Creek) also used by salmon. Although harlequins nested along Stellar Creek, they apparently did not establish home ranges...
Resource Type:: Masters Thesis
Full Text:: foremost my advisor, Robert Jarvis, for his guidance, support, and friendship. His knowledge and insight

ScholarsArchive@OSU

Supplemental feeding influences reproductive success of the Hawaiian goose (Branta sandvicensis) at Haleakala National Park, Maui, Hawai'i

Distribution and habitat use of bull trout following the removal of nonnative brook trout

Behavioral constraints on harlequin duck population recovery from the Exxon Valdez oil spill in Prince William Sound, Alaska

Seasonal influences on food availability and diet of coastal cutthroat trout in relation to riparian vegetation

Nesting ecology of mallards in the Willamette Valley of Oregon

Nesting and foraging ecology of band-tailed pigeons in western Oregon

Site tenacity, mate retention and sexual dimorphism in Black Terns

Foraging ecology of migrant waterbirds, Lake Abert, Oregon

Formation of feeding flocks during winter by dusky and Taverner's Canada geese in Oregon

Ecology of harlequin ducks in Prince William Sound, Alaska, during summer

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