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Hawaiian duck (Anas wyvilliana) behavior and response to wetland habitat management at Hanalei National Wildlife Refuge on Kaua'i

Creator:: Malachowski, Christopher P.
Abstract:: The endangered Hawaiian Duck (koloa maoli; Anas wyvilliana), a non-migratory and island-endemic species, experienced a significant population decline during the twentieth century due to factors such as habitat loss, overharvest, introduced mammalian predators, and hybridization with introduced feral Mallards (A. platyrhynchos). A key objective for Hawaiian Duck recovery is to...
Resource Type:: Masters Thesis
Full Text:: graduate council representative, Dr. Randall Keller, for his service. Funding for my project was

Evolution and risk in conservation of Pacific salmon

Creator:: Currens, Kenneth P.
Abstract:: Identifying appropriate units for conservation requires knowledge of evolutionary patterns and risks of managing at different geographical and genetic scales. I examined genetic diversity at different geographical scales among 11,400 rainbow trout (Oncorhynchus mykiss) from 243 locations in 13 major river basins throughout much of their range and among coho...
Resource Type:: Dissertation
Full Text:: . Hiram Li, Dr. George Bailey, Dr. Arthur Boucot, Dr. Peter Dawson, and Dr. Douglas Markie. I especially

Phylogeny and zoogeography of Laemonema (Pisces; Gadiformes; Moridae)

Creator:: Meléndez, Roberto C.
Resource Type:: Dissertation
Full Text:: of my committee Drs. Arthur J. Boucout, William J. Liss, Tomio Iwamoto and Evelyn Sherr, and former

Reproductive behavior of the threespine stickleback exposed to chloramines

Creator:: Carlson, Anthony R.
Resource Type:: Masters Thesis
Full Text:: for the protection of most species. He also cites an unpublished report by Arthur (1972) who studied

Use of extractable lipofuscin as an age biomarker to determine age structure of ghost shrimp (Neotrypaea californiensis) populations in west coast estuaries

Creator:: Cassidy, Katelyn M.
Abstract:: Determining age in crustaceans is inherently imprecise because they molt periodically and do not retain hard structures throughout their lifespan. Morphological measurements, such as carapace length, are often used to estimate age because methods for direct ageing do not exist. However, variability in individual growth rate and molt frequency can...
Resource Type:: Masters Thesis
Full Text:: Randall for always making sure that I had everything I need and Jim Power for the use of the

Effects of wildfire on growth and demographics of coastal cutthroat trout in headwater streams

Creator:: Heck, Michael P.
Abstract:: Wildfire is a largely terrestrial perturbation broadly recognized as an agent of disturbance and ecological change in forested biomes. Effects of post-fire conditions on biotic components of aquatic systems have been less well-documented, although hypothetically, the two are strongly connected. In fact, the influence of wildfire may be most profound...
Resource Type:: Masters Thesis

Cortisol and the immune system of juvenile Pacific salmon during stress and development

Creator:: Maule, Alec G.
Abstract:: Plasma concentrations of cortisol, a glucocorticoid hormone that is immunosuppressive in mammals, increase during stress and smoltification of salmonids. There was a reduction in the ability of lymphocytes to generate antibody producing cells (APC) in vivo concurrent with increased plasma cortisol titers during smoltification of coho salmon (Oncorhvnchus kisutch). Cortisol...
Resource Type:: Dissertation
Full Text:: ., Hoar and Randall, 1969, 1984; Ali, 1979) probably in response to economic needs of aquaculture. The

Heterogeneous thermal habitat for northeast Oregon stream fishes

Creator:: Ebersole, Joseph L.
Abstract:: Discrete coldwater patches within warm streams provide potential thermal refuge for coldwater fishes during periods of heat stress. This analysis focused on heterogeneity in stream water temperatures as influenced by local influx of cooler subsurface waters. Using field thermal probes and recording thermistors, we identified and characterized coldwater patches potentially...
Resource Type:: Dissertation
Full Text:: ; Keller et al. 1990), "cool water areas" (Bilby 1984) and "stratified pools" (Nielsen et al. 1994

News & Views, 2004

Creator:: Hall, Jim
Resource Type:: Other
Full Text:: the Arthur K. Whicomb Professorship, NSF Director’s Award for Collaborative Integration, NSF Faculty

Distribution, habitat associations, and conservation status of Pacific fisher (Pekania pennanti) in Oregon.

Creator:: Barry, Brent R.
Abstract:: Fishers (Pekania pennanti) are medium sized mustelids endemic to North America. Two fisher populations persist in Oregon: an indigenous population in southwestern Oregon, and a reintroduced population in the southern Cascade Mountains. Despite candidacy for listing under the Endangered Species Act, current information on fisher populations in Oregon is scarce....
Resource Type:: Masters Thesis
Full Text:: 1987, Stacey and Taper 1992, Lande 1993, Keller and Waller 2002). Species suffering from reduced

ScholarsArchive@OSU

Hawaiian duck (Anas wyvilliana) behavior and response to wetland habitat management at Hanalei National Wildlife Refuge on Kaua'i

Evolution and risk in conservation of Pacific salmon

Phylogeny and zoogeography of Laemonema (Pisces; Gadiformes; Moridae)

Reproductive behavior of the threespine stickleback exposed to chloramines

Use of extractable lipofuscin as an age biomarker to determine age structure of ghost shrimp (Neotrypaea californiensis) populations in west coast estuaries

Effects of wildfire on growth and demographics of coastal cutthroat trout in headwater streams

Cortisol and the immune system of juvenile Pacific salmon during stress and development

Heterogeneous thermal habitat for northeast Oregon stream fishes

News & Views, 2004

Distribution, habitat associations, and conservation status of Pacific fisher (Pekania pennanti) in Oregon.

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