Index Catalog // ScholarsArchive@OSU

Creator:: Ciotti, Damion C.
Abstract:: Runoff from agricultural lands into Upper Klamath Basin rivers and lakes can cause water quality problems affecting fish and wildlife. Excessive eutrophication in Upper Klamath Lake is linked to high nutrient input (particularly phosphorus) stemming from both lake sediments and watershed tributaries. On a unit area load basis the Wood...
Resource Type:: Masters Thesis
Full Text:: Runoff from Flood Irrigated Pasture in the Klamath Basin, Orecion. Abstract approved: John E. Baham

Creator:: Beatty, Christopher D.
Abstract:: This thesis explored the distributions and life histories of dragonflies and damselflies (Insecta: Odonata) of the riverine wetlands of the Willamette Valley in western Oregon, USA. Odonate species distributions were characterized over two seasons in the autumn of 2000 and the spring of 2001-at twenty-seven wetlands located throughout the valley....
Resource Type:: Masters Thesis
Full Text:: APPROVED: Major rofessor, representing Environmental Sciences Dean of Gfl"è School I understand that my

Creator:: Biga, Lindsay M.
Abstract:: Pollution by pesticides is a ubiquitous concern for wildlife. The effects of pesticides are especially concerning in aquatic environments, which are particularly vulnerable as they have several exposure routes for the influx of chemicals. These effects are of particular concern as biodiversity loss reaches unprecedented rates. This includes recent declines...
Resource Type:: Dissertation
Full Text:: , Mark Kendrick, Joe Tyburczy, Karen Kiemnec- Tyburczy, Sarah Close, Kate Boersma, Kaitlin Bonner

Creator:: Searle, Catherine L.
Abstract:: Infectious diseases are a growing concern for both humans and wildlife. The negative effects of infectious disease have been exemplified by the recent global amphibian population declines associated with disease outbreaks. Although multiple pathogens and factors play a role in these declines, the aquatic fungal pathogen, Batrachochytrium dendrobatidis (Bd), has...
Resource Type:: Dissertation
Full Text:: Phillipsen, Jarod Sapp, Nick Baker, Alison Iles, Kaitlin Bonner, Travis Godkin, Chris Friesen, Kate Boersma

Creator:: Maher, Anna T.
Abstract:: Resilience-based management in rangelands implies maintaining desirable ecological states and avoiding thresholds to less desirable ones; however, the efficacy of resilience-based management depends upon several driving forces. These forces include management by those who depend upon rangelands for their livelihoods, the current state of ecological health of rangelands, and changing...
Resource Type:: Dissertation

Creator:: Bradley, Paul W.
Abstract:: The ongoing worldwide loss of biodiversity has been described as a "biodiversity crisis," "the Anthropocene defaunation," and alternatively "an extinction spasm." More recently, many scientists have come to the conclusion that we are witnesses to Earth's sixth major mass extinction event, which has the potential to fundamentally alter basic ecological...
Resource Type:: Dissertation
Full Text:: , Lillian Tuttle, Erin Gorsich, Bree Beechler, Kaitlin Bonner, Heather Broghton, Rhea Hanselmann, Emily

Creator:: Wagner, Lisa A.
Abstract:: It is good practice to fully understand components of an ecosystem if we hope to preserve its biodiversity. A problem is that we know very little about some organisms and nothing of others. Studies that investigate an organism’s basic biological, ecological and physiological life history variables advance our knowledge of...
Resource Type:: Dissertation
Full Text:: distribution of D. tenebrosus, extends from the south bank of the Frasier River in extreme southwest British

ScholarsArchive@OSU