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Creator:: Sveum, Colin M.
Resource Type:: Masters Thesis
Full Text:: South-Central Washington by Colin M. Sveum A THESIS submitted to Oregon State

Creator:: Gallant, Alisa L.
Abstract:: The Mount St. Helens eruption of May 18, 1980, offered an excellent setting for evaluating early response of ecosystems to disturbance. Prior to the eruption, the area was densely forested with fir, hemlock, and Douglas-fir, and various understory species. During the course of the eruption, hillslopes within a 180 degree...
Resource Type:: Masters Thesis
Full Text:: 1981. In: Proc. Mt. St. Helens: effects oh water resources. State of Washington, Water Res. Center

Creator:: Thomas, Carmen M.
Abstract:: Great blue heron (Ardea herodias) eggs and prey items were collected from six colonies on the Columbia and Willamette rivers and Puget Sound during 1994-95. Contaminant concentrations, reproductive success, and biomagnification factors (BMFs) were determined and effects of residue levels were measured by H4IIE rat hepatoma and ethoxyresorufin-O-dealkylase (EROD) bioassays....
Resource Type:: Masters Thesis
Full Text:: Herons in the Columbia River Basin by Carmen M. Thomas A THESIS submitted to Oregon State University

Creator:: Glenn, Elizabeth M.
Abstract:: Since the early 1990s, declines in northern spotted owl (Strix occidentalis caurina) populations have been documented through extensive field surveys and range-wide demographic analyses. Although loss of late-successional forest has been credited as the primary cause for spotted owl population declines, environmental variation has also been shown to influence vital...
Resource Type:: Dissertation
Full Text:: climate on northern spotted owl reproduction on 2 study areas in Washington and 4 study areas in Oregon

Creator:: Loschl, Peter J.
Abstract:: Northern Spotted Owls (Strix occidentalis caurina) are a long-lived forest owl and range-wide declines in their numbers have resulted in the species being listed as threatened under the endangered species act. While many studies have been focused on population trends and reproductive performance of Spotted Owls from different age-classes, none...
Resource Type:: Masters Thesis
Full Text:: Areas in Oregon and Washington. Abstract approved: Eric D. Forsman Northern Spotted Owls

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