Index Catalog // ScholarsArchive@OSU

Coexistence of top predators in headwater streams : pathways of intraguild predation between Pacific Giant salamander larvae and cutthroat trout

Creator:: Rundio, David E.
Abstract:: The coexistence of multiple predators may have important consequences for the structure and function of communities. Interactions between predators may strongly affect their combined direct and indirect effects on prey populations and lower trophic levels. Predators often have size-structured populations, which may result in intraguild predation characterized by complex trophic...
Resource Type:: Masters Thesis
Full Text:: . 1992. Feeding ecology of the Pacific giant salamander (Dicamptodon tenebrosus) and their role as top

Phylogeography, evolution, and conservation in forest-associated Pacific Northwest salamanders

Creator:: Wagner, R. Steven
Abstract:: Phylogeographic studies of six Pacific Northwest forest-associated salamanders provide insight into historical and contemporary processes on population genetic structure. Among Larch Mountain Salamanders (Plethodon larselli), cytochrome b mitochondrial (mtDNA) sequences (381 bp) and random amplified polymorphic DNA (RAPDs; 34 loci) supported separate Management Units for northern and southern populations (12...
Resource Type:: Dissertation
Full Text:: the Pacific Northwest (Larch Mountain Salamander, Plethodon larselli; Oregon Slender Salamander

Riparian vegetation and larval Pacific Giant (Dicamptodon tenebrosus) and adult Western Redback (Plethodon vehiculum) salamanders in the Oregon Coast Range

Creator:: Graff, Paula (Paula Hayes)
Abstract:: Riparian areas in the Pacific Northwest provide important biotic and abiotic features, such as down wood, moist microsites, and abundant invertebrate prey that benefit aquatic and terrestrial amphibians. Reported high densities of amphibians from streams and riparian areas in the Pacific Northwest highlight their importance in riparian food webs. Amphibians...
Resource Type:: Masters Thesis
Full Text:: . Feeding ecology of stream-dwelling Pacific Giant Salamander larvae (Dicamptodon tenebrosus). Copeia

From the forest to the sea : a story of fallen trees

Creator:: Maser, Chris, Tarrant, Robert F., Trappe, James M., and Franklin, Jerry F.
Abstract:: Large fallen trees in various stages of decay contribute much-needed diversity of ecological processes to terrestrial, aquatic, estuarine, coastal beach, and open ocean habitats in the Pacific Northwest. Intensive utilization and management can deprive these habitats of large fallen trees. The publication presents sound information for managers making resource management...
Resource Type:: Technical Report

The effects of pathogens, UV-B radiation, and introduced species on amphibians in the Pacific Northwest

Creator:: Kiesecker, Joseph Michael
Abstract:: I examined two amphibian communities to assess factors that may impact amphibian biodiversity. The results suggest that the potential factors which influence the maintenance of amphibian biodiversity are multi-faceted and thus, attempts to understand these factors must reflect these complexities. I investigated factors that influenced the susceptibility of western toad...
Resource Type:: Dissertation
Full Text:: species on amphibians in the Pacific Northwest AN ABSTRACT OF THE THESIS OF Joseph M. Kiesecker for

Sampling methods for bats, Wildlife-habitat relationships : sampling procedures for Pacific Northwest vertebrates

Creator:: Thomas, Donald W. and West, Stephen D.
Abstract:: Bats represent the second most diverse group of mammals inhabiting the western slopes of the Cascade Range in southern Washington and Oregon Coast Range. Bat populations may well be sensitive to changes in forest age, structure, or distribution, but their nocturnal habits and high mobility render the study of the...
Resource Type:: Technical Report

Anthropogenic activities associated with the status of salmon stocks in Pacific Northwest watersheds

Creator:: Mrakovcich, Karina Lorenz
Abstract:: Stocks of salmon are declining in the Pacific Northwest. Based on region-wide studies that list and categorize the status of salmon stocks (Nehlsen et al., 1991; Huntington et al., 1994; and Nawa, 1995), I analyze the watersheds where stocks of salmon spawn for several anthropogenic variables, most of which are...
Resource Type:: Dissertation
Full Text:: stocks in Pacific Northwest watersheds AN ABSTRACT OF THE THESIS OF Karina Lorenz Mrakovcich for the

Interactions between western hemlock mycorrhizal fungi and wood rotting fungi in a system simulating Douglas-fir nurse logs in Pacific Northwest forests

Creator:: Tuininga, Amy R.
Abstract:: Decomposing logs in Douglas-fir - western hemlock forests in the Pacific Northwest are systems in which many organisms interact. Fungi in these systems include both mycorrhizal fungi associated with hemlock seedlings and many species of saprotrophic wood decomposer fungi. It is very likely that these two groups of fungi interact...
Resource Type:: Masters Thesis

Correlation between structural heterogeneity and arthropod biodiversity : implications for management of Pacific Northwest forests

Creator:: Madson, Stephanie Lee
Abstract:: The "old-growth controversy" in the Pacific Northwest recognized thinning as the primary silvicultural practice for land managers to produce wildlife habitat while continuing to produce timber. For the foreseeable future, forest stands will be harvested to produce forest gaps and a patchwork of trees of different ages. In order to...
Resource Type:: Masters Thesis
Full Text:: Structural Heterogeneity and Arthropod Biodiversity: Implications for Management of Pacific Northwest

The source area for coarse woody debris in small streams in western Oregon and Washington

Creator:: McDade, Mary Helen
Abstract:: Large organic debris has important biological and physical roles within the stream ecosystem. In order to determine the source area of large organic debris in streams, thirty-nine streams in the Cascade and Coast Ranges of Oregon and Washington were sampled. The distance from point-of-origin to channel was measured for thirty...
Resource Type:: Masters Thesis
Full Text:: forest biome of the Pacific Northwest has many unique characteristics. Climatic factors (mild, wet

ScholarsArchive@OSU

Coexistence of top predators in headwater streams : pathways of intraguild predation between Pacific Giant salamander larvae and cutthroat trout

Phylogeography, evolution, and conservation in forest-associated Pacific Northwest salamanders

Riparian vegetation and larval Pacific Giant (Dicamptodon tenebrosus) and adult Western Redback (Plethodon vehiculum) salamanders in the Oregon Coast Range

From the forest to the sea : a story of fallen trees

The effects of pathogens, UV-B radiation, and introduced species on amphibians in the Pacific Northwest

Sampling methods for bats, Wildlife-habitat relationships : sampling procedures for Pacific Northwest vertebrates

Anthropogenic activities associated with the status of salmon stocks in Pacific Northwest watersheds

Interactions between western hemlock mycorrhizal fungi and wood rotting fungi in a system simulating Douglas-fir nurse logs in Pacific Northwest forests

Correlation between structural heterogeneity and arthropod biodiversity : implications for management of Pacific Northwest forests

The source area for coarse woody debris in small streams in western Oregon and Washington

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