Index Catalog // ScholarsArchive@OSU

Fifty years of change in a Pacific Northwest winter forest bird community

Creator:: Clements, Nolan
Abstract:: North American bird populations have declined throughout the past half century. The majority of studies quantifying these declines have focused on spring and summer breeding birds; not the season of scarcity, winter. We re-surveyed 7 large study plots in Douglas fir forests initially surveyed in winter during the late 1960s...
Resource Type:: Honors College Thesis
Full Text:: requirements for the degree of Honors Baccalaureate of Science in Fisheries, Wildlife, and

Demography and Reproduction of Erigeron decumbens var. decumbens, 1993-1994 Field Studies

Creator:: Ingersoll, Cheryl A., Finley, Karen K., and Clark, Deborah Louise, 1950-
Abstract:: Erigeron decumbens var. decumbens, the Willamette Daisy, is endemic to the Willamette Valley of Oregon. This taxon is a Category 1 Candidate for listing under the federal Endangered Species Act (U.S. Fish and Wildlife Service 1990) and is listed as Endangered under Oregon state law. Herbarium records indicate that E....
Resource Type:: Technical Report
Full Text:: . (1993) found major gaps in our knowledge of the biology and ecology of Erigeron decumbens, and

Predator Conservation and Trophic Ecology

Creator:: Wolf, Christopher
Abstract:: Many of Earth’s terrestrial large carnivore species are threatened with extinction. As a result, some of the ecological effects associated with these species may be lost. With the goal of furthering large carnivore conservation research, I conduct three global scale analyses involving these species. First, I explore prey depletion as...
Resource Type:: Dissertation
Full Text:: Introduction Unified by the theme of “predator conservation and trophic ecology,” this dissertation

Multiple steroid and thyroid hormones detected in baleen from eight whale species

Creator:: Lysiak, Nadine S., Moore, Michael J., Hunt, Kathleen E., Robbins, Jooke, Seton, Rosemary E., Buck, C. Loren, and Torres, Leigh G.
Abstract:: Recent studies have demonstrated that some hormones are present in baleen powder from bowhead (Balaena mysticetus) and North Atlantic right (Eubalaena glacialis) whales. To test the potential generalizability of this technique for studies of stress and reproduction in large whales, we sought to determine whether all major classes of steroid...
Resource Type:: Article
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Assessing how morphology of female desert bighorn sheep varies with climate in the Mojave Desert of California

Creator:: Torres, Jose A.
Abstract:: Understanding how spatial variation in climate correlates with phenotypic variation among individuals may offer insights about local adaptation, population performance, and species’ response to climate change. Desert bighorn sheep (Ovis canadensis nelsoni) in the Mojave Desert of southern California experience a broad range of temperature and aridity, inhabiting mountain ranges...
Resource Type:: Honors College Thesis
Full Text:: in Fisheries, Wildlife, and Conservation presented on March 8, 2023. Title: Assessing how

Final report, year two: Control of Brachypodium sylvaticum and restoration of rare native upland prairie habitat at Butterfly Meadows, Benton County ODA 1514 GR

Creator:: Clark, Deborah Louise, 1950-, Blakeley-Smith, Matt, Hammond, Paul, Johnson, Deborah, Kaye, Tom, Kelpsas, Bruce, Pfund, Fred, Vomocil, Marc, and Wilson, Mark V.
Abstract:: Our project goal is to protect and restore rare Willamette Valley upland prairie habitat at Butterfly Meadows (Benton County) from invasion by the noxious weed Brachypodium sylvaticum (false brome). Native prairies, which once dominated the landscape of the Willamette Valley, are considered among the rarest of Oregon’s ecosystems and are...
Resource Type:: Technical Report
Full Text:: and are in critical need of conservation. One of the largest remaining parcels of native upland

Final report [year one]: Control of Brachypodium sylvaticum and restoration of rare native upland prairie habitat at Butterfly Meadows, Benton County ODA 1342 GR

Creator:: Clark, Deborah Louise, 1950-, Hammond, Paul, Johnson, Deborah, Kaye, Tom, Kelpsas, Bruce, Pfund, Fred, Vomocil, Marc, and Wilson, Mark V.
Abstract:: Our project goal is to protect and restore rare Willamette Valley upland prairie habitat at Butterfly Meadows (Benton County) from invasion by the noxious weed Brachypodium sylvaticum (false brome). Native prairies, which once dominated the landscape of the Willamette Valley, are considered among the rarest of Oregon’s ecosystems and are...
Resource Type:: Technical Report
Full Text:: Willamette Valley, are considered among the rarest of Oregon’s ecosystems and are in critical need of

Regeneration biology of Erigeron decumbens var. decumbens, an endangered plant of the Willamette Valley

Creator:: Clark, Deborah Louise, 1950-, Finley, Karen K., and Ingersoll, Cheryl A.
Abstract:: Erigeron decumbens var. decumbens, the Willamette daisy, is known only from the Willamette Valley of Oregon. Herbarium records, from the 1800's until 1934, indicate that the Willamette daisy was once common and widely distributed throughout the Willamette Valley (Clark et al. 1993). However, between 1934 and 1980, this taxon was...
Resource Type:: Technical Report
Full Text:: , Erigeron decumbens var. decumbens populations are found in both wetland and upland prairies. The wetland

Plant-Pollinator Interactions in a Changing World: Cryptic Specialization, Pollinator Movement, and Landscape Genetics of Pollinator-Dependent Plants

Creator:: Gannon, Dustin G.
Abstract:: Plant-pollinator mutualisms are one of the most prevalent and economically important mutualisms in nature. Like many other ecological systems, plant-pollinator communities are threatened by anthropogenic activity, both directly (e.g., habitat conversion and fragmentation) and indirectly (e.g., climate change). While we are aware of many of the activities that adversely impact...
Resource Type:: Dissertation
Full Text:: for the degree of Doctor of Philosophy in Botany and Plant Pathology presented on March 17, 2022

Atlantic Puffin (Fratercula arctica) Foraging Ecology During Marine Heatwave Conditions

Creator:: Kennerley, William L.
Abstract:: Marine heatwaves (“MHWs”) are discrete periods of anomalously warm ocean conditions that can lead to shifts in the distribution and abundance of marine organisms. Low-trophic level, pelagic forage species are frequently among those affected by MHWs, often resulting in considerable impacts upon their predators. In the North Atlantic Ocean, Atlantic...
Resource Type:: Masters Thesis
Full Text:: knowledge of puffin foraging ecology in the region is required. CLIMATE CHANGE AND THE RAPIDLY

ScholarsArchive@OSU

Fifty years of change in a Pacific Northwest winter forest bird community

Demography and Reproduction of Erigeron decumbens var. decumbens, 1993-1994 Field Studies

Predator Conservation and Trophic Ecology

Multiple steroid and thyroid hormones detected in baleen from eight whale species

Assessing how morphology of female desert bighorn sheep varies with climate in the Mojave Desert of California

Final report, year two: Control of Brachypodium sylvaticum and restoration of rare native upland prairie habitat at Butterfly Meadows, Benton County ODA 1514 GR

Final report [year one]: Control of Brachypodium sylvaticum and restoration of rare native upland prairie habitat at Butterfly Meadows, Benton County ODA 1342 GR

Regeneration biology of Erigeron decumbens var. decumbens, an endangered plant of the Willamette Valley

Plant-Pollinator Interactions in a Changing World: Cryptic Specialization, Pollinator Movement, and Landscape Genetics of Pollinator-Dependent Plants

Atlantic Puffin (Fratercula arctica) Foraging Ecology During Marine Heatwave Conditions

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