Index Catalog // ScholarsArchive@OSU

Habitat structure and occupancy patterns of the montane frog, Rana cascadae, in the Cascade Range, Oregon, at multiple scales : implications for population dynamics in patchy landscapes

Creator:: Brown, Catherine, 1958-
Abstract:: Associations between occupancy patterns of a montane anuran species, Rana cascadae, and habitat structure at multiple scales were examined to investigate how population structure may influence persistence in spatially and temporally heterogeneous environments. Predictions were based on population dynamics suggested by source-sink and metapopulation models. Potential sites in three basins...
Resource Type:: Masters Thesis
Full Text:: Occupancy Patterns of the Montane Frog. Rana cascadae. in the Cascade Range. Oregon. at Multiple Scales

Population and conservation genetic structure of the Cascades frog, Rana cascadae throughout the species' range

Creator:: Monsen, Kirsten J.
Abstract:: A major goal of conservation biology is to elucidate the population genetic structure in threatened species and assess the relative importance of the evolutionary forces that shape that population genetic structure. I conducted three studies in the declining amphibian Rana cascadae to assess levels of population genetic differentiation and the...
Resource Type:: Dissertation
Full Text:: Cascades Frog, Rana cascadae Throughout the Species' Range. Abstract approved: AN ABSTRACT OF THE

Population attributes and habitat selection of recolonizing mountain beaver (Aplodontia rufa)

Creator:: Hacker, Amy L.
Abstract:: I investigated the population attributes and habitat selection of mountain beaver (Aplodontia rufa) recolonizing clearcuts in the Coast Range mountains of Polk and Lincoln counties, Oregon between June 1989 and August 1990. The population characteristics of colonizing mountain beaver were evaluated in 12 stands of 3 types: 1-year-old clearcuts assumed...
Resource Type:: Masters Thesis
Full Text:: in western Oregon has created large areas of potential mountain beaver dispersal sinks similar to

Factors limiting the distribution of the sensitive lichen Usnea longissima in the Oregon Coast Range : habitat or dispersal?

Creator:: Keon, Dylan B.
Abstract:: The sensitive lichen Usnea longissima Ach., formerly a fairly common circumboreal species, has been extirpated from much of its range (e.g., Eastern Europe). Although the U.S. Pacific Northwest (PNW) remains a relative stronghold for the species, U longissima faces increasing pressure in the region from habitat loss, air pollution, and...
Resource Type:: Masters Thesis
Full Text:: Usnea longissima in the Oregon Coast Range : habitat or dispersal? AN ABSTRACT OF THE THESIS OF

Indirect effects of ultraviolet-B radiation on larval amphibians as mediated by food quality and trophic interactions

Creator:: Scheessele, Erin A.
Abstract:: Ultraviolet-B radiation (UVB) is an abiotic stressor in both terrestrial and aquatic systems. The stratospheric ozone layer, depleted due to anthropogenic activities and the cause of elevated UVB at earth's surface over the last four decades, is predicted to recover by 2065. However, UVB levels in aquatic systems may continue...
Resource Type:: Dissertation
Full Text:: affects early larval growth and development in two anuran species, Pseudacris regilla and Rana cascadae

Drift, wood, and grazing cattle : macroinvertebrates in managed streams

Creator:: Reed, T. L.
Abstract:: The importance of active-entry drift at a community-scale was evaluated by testing whether the placement of wood in streams affected the abundance of Baetis spp. mayflies in drift. Baetis were chosen because they use drift as a behavioral strategy and are important in salmonid diets. The density of woody debris...
Resource Type:: Masters Thesis
Full Text:: submitted to Oregon State University in partial fulfillment of the recidirements for the degree

Structural development of late successional forests in the central Oregon Coast Range : abundance, dispersal, and growth of western hemlock (Tsuga heterophylla) regeneration

Creator:: Schrader, Barbara A.
Abstract:: Patterns of western hemlock regeneration were studied in relation to forest structural development and environment in the Oregon Coast Range. Density of western hemlock seedlings was examined across the climatic gradient from cool, moist coastal areas to the seasonally hot and dry Willamette Valley Margin. Seedling densities were most strongly...
Resource Type:: Dissertation

Macroarthropod communities on vine maple, red alder and sitka alder along riparian zones in the central western Cascade Range, Oregon

Creator:: Oboyski, Peter T.
Resource Type:: Masters Thesis
Full Text:: alder along riparian zones in the central western Cascade Range, Oregon AN ABSTRACT OF THE THESIS OF

Demography of medusahead on two soil types : potential for invasion into intact native communities

Creator:: Miller, Heather C.
Resource Type:: Masters Thesis
Full Text:: A THESIS Submitted to Oregon State University in partial fulfillment of the requirements

The effects of patch size and isolation on juvenile emigration in gray-tailed voles, Microtus canicaudus

Creator:: Nelson, Natasha
Resource Type:: Masters Thesis
Full Text:: canicaudus by Natasha Nelson A THESIS submitted to Oregon State University in partial fulfillment of

ScholarsArchive@OSU

Habitat structure and occupancy patterns of the montane frog, Rana cascadae, in the Cascade Range, Oregon, at multiple scales : implications for population dynamics in patchy landscapes

Population and conservation genetic structure of the Cascades frog, Rana cascadae throughout the species' range

Population attributes and habitat selection of recolonizing mountain beaver (Aplodontia rufa)

Factors limiting the distribution of the sensitive lichen Usnea longissima in the Oregon Coast Range : habitat or dispersal?

Indirect effects of ultraviolet-B radiation on larval amphibians as mediated by food quality and trophic interactions

Drift, wood, and grazing cattle : macroinvertebrates in managed streams

Structural development of late successional forests in the central Oregon Coast Range : abundance, dispersal, and growth of western hemlock (Tsuga heterophylla) regeneration

Macroarthropod communities on vine maple, red alder and sitka alder along riparian zones in the central western Cascade Range, Oregon

Demography of medusahead on two soil types : potential for invasion into intact native communities

The effects of patch size and isolation on juvenile emigration in gray-tailed voles, Microtus canicaudus

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search