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Ecology of populations of Van Dyke's salamanders in the Cascade Range of Washington State

Creator:: McIntyre, Aimee P.
Abstract:: The Van Dyke's salamander (Plethodon vandyke,) is a rare species endemic to Washington State. It has been found in cool moist microhabitats along streams, splash zones of waterfalls, and headwater seeps. We explored the association of the Van Dyke's salamander with hydrologic condition, geomorphology, disturbance characteristics, and vegetation structure in...
Resource Type:: Masters Thesis
Full Text:: Range of Washington State by Aimee P. McIntyre A THESIS submitted to Oregon State University in

Using DNA metabarcoding to describe biodiversity and disease dynamics

Creator:: Massey, Aimee L.
Abstract:: Land-use change, particularly in the form of the conversion of primary forest to forest-matrix systems, alters species communities and species interactions. Describing these often complex and nuanced species responses is one of the great challenges in ecology. Another complementary challenge is finding and using the most efficient means for collecting...
Resource Type:: Dissertation
Full Text:: Dynamics by Aimee Leigh Massey A DISSERTATION submitted to Oregon State University in partial

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:: : Bruce D. Dugger The endangered Hawaiian Duck (koloa maoli; Anas wyvilliana), a non-migratory and

Feeding Ecology and Food Web Linkages of Yearling Chinook Salmon (Oncorhynchus tshawytscha) Migrating Through the Lower Columbia River and Estuary

Creator:: Munguia, Angelica
Abstract:: The Columbia River Basin historically supported abundant populations of Pacific salmon (Oncorhynchus spp.) but, largely due to anthropogenic influence, many populations are now listed as threatened or endangered under the U.S. Endangered Species Act. Habitat restoration efforts have been a critical component of salmon recovery plans. However, although the importance...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________________ Jessica A. Miller The Columbia River Basin historically supported abundant

The effects of acclimation and surface access on the resistance of fish to hypoxic stress

Creator:: Wirosoebroto-Hartadi, Retno Widaningroem
Abstract:: Rainbow trout (Salmo gairdneri) and bluegill (Lepomis macrochirus) were exposed to flows of water containing low DO concentrations produced by bubbling nitrogen through the water. Abrupt exposure of fish to critical DO concentrations (The standard dose response) and by a more gradual changing of DO levels (The "stepdown" approach) were...
Resource Type:: Masters Thesis
Full Text:: dose response) and by a more gradual changing of DO levels (The "stepdown" approach) were employed to

Defining micro-habitat relationships for juvenile black rockfish, Sebastes melanops

Creator:: Mann, Marion E.
Abstract:: The functioning of marine habitats needs to be understood in the context of the ecological relationships and associations between organisms and the physical and biogenic environment they inhabit. Thus, it becomes important to explore and define habitat features which contribute to these relationships and which are important in the life...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: _________________________________________________________________ Ian A. Fleming

Spatial and temporal scales of genetic change in two overfished rockfishes

Creator:: Gomez-Uchida, Daniel
Abstract:: Pacific rockfishes (genus Sebastes) have attracted wide scientific and public interest from an evolutionary, fishery and conservation standpoints. This dissertation addresses several hypotheses involving spatial and temporal scales of genetic change in two overfished rockfishes, darkblotched (S. crameri) and canary rockfish (S. pinniger), using statistical analyses of genetic variation within...
Resource Type:: Dissertation
Full Text:: Rockfishes” Abstract approved: Michael A. Banks Pacific rockfishes (genus Sebastes

Growth and reproductions of Oreochromis niloticus (L.) in tropical aquatic microcosms at fluctuating temperature regimes

Creator:: Rwangano, Félicien
Resource Type:: Dissertation
Full Text:: Fluctuating Temperature Regimes Abstract approved: Richard A. Tubb The effects of fluctuating

Interactions of organic input types and water quality on the production of Oreochromis niloticus (Linnaeus, 1757) in Rwandan ponds

Creator:: Rwangano, Félicien
Resource Type:: Masters Thesis
Full Text:: Oreochromis niloticus (Linnaeus, 1757) in Rwandan Ponds. Abstract approved: Redacted for Privacy RiChard A

Pre- and Post-settlement Processes of Northern Rock Sole (Lepidopsetta polyxystra) in Relation to Interannual Variability in Temperature and Productivity in the Gulf of Alaska

Creator:: Fedewa, Erin J.
Abstract:: Understanding the effects of climate variability on growth dynamics and timing of early life history events in marine fishes can provide insights into survival, recruitment and productivity. Field collections (2005, 2007, 2009-2011) were combined with otolith microstructural analysis to examine interannual variation in larval and juvenile growth rates, size at...
Resource Type:: Masters Thesis
Full Text:: Jessica A. Miller Understanding the effects of climate variability on growth dynamics and timing of

ScholarsArchive@OSU

Ecology of populations of Van Dyke's salamanders in the Cascade Range of Washington State

Using DNA metabarcoding to describe biodiversity and disease dynamics

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

Feeding Ecology and Food Web Linkages of Yearling Chinook Salmon (Oncorhynchus tshawytscha) Migrating Through the Lower Columbia River and Estuary

The effects of acclimation and surface access on the resistance of fish to hypoxic stress

Defining micro-habitat relationships for juvenile black rockfish, Sebastes melanops

Spatial and temporal scales of genetic change in two overfished rockfishes

Growth and reproductions of Oreochromis niloticus (L.) in tropical aquatic microcosms at fluctuating temperature regimes

Interactions of organic input types and water quality on the production of Oreochromis niloticus (Linnaeus, 1757) in Rwandan ponds

Pre- and Post-settlement Processes of Northern Rock Sole (Lepidopsetta polyxystra) in Relation to Interannual Variability in Temperature and Productivity in the Gulf of Alaska

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