Index Catalog // ScholarsArchive@OSU

Fish acclimation and the development of tolerance to zinc as a modifying factor in toxicity

Creator:: Anadu, Donald Igwegbe
Resource Type:: Dissertation

Some biological effects of the insecticide sevin on marine bivalves

Creator:: Armstrong, David A.
Abstract:: See pdf
Resource Type:: Masters Thesis

The multisteady-state nature of toxicant behavior and effect in an aquatic laboratory ecosystem

Creator:: Burnett, Kelly M.
Resource Type:: Masters Thesis
Full Text:: -through glass aquaria. The systems differed in organization and in level of environmental parameters

Biomass and nutrient dynamics associated with deforestation, biomass burning and conversion to pasture in a tropical dry forest in Mexico

Creator:: Steele, Michael D.
Abstract:: The effects of deforestation and biomass burning in tropical dry forests (TDF) remain a little studied phenomenon. We quantified total aboveground biomass (TAGB), carbon and nutrient (N,S,Ca,P,K) loss under two separate fire severity scenarios; one early when the fuels were higher in moisture content, one later when the slash fuels...
Resource Type:: Masters Thesis

Environmental contaminants and ecology of bald eagles in southcentral Oregon

Creator:: Frenzel, Richard Wilmarth
Abstract:: Food habits and levels of organochlorine compounds, lead, and mercury in resident and wintering bald eagles were studied in southcentral Oregon and California, 1979-83. Food habits were assessed by examination of castings from winter communal roosts, identification of 2938 prey items found at nest sites and foraging areas, and observations...
Resource Type:: Dissertation
Full Text:: Title: Environmental Contaminants and Ecology of Bald Eagles in Southcentral Oregon Abstract approved

Effects of dieldrin on the growth and development of steelhead trout

Creator:: Oregon State University. Agricultural Experiment Station, Shumway, Dean L., and Chadwick, George Grete
Abstract:: Experiments were conducted to determine survival, growth, and accumulation of HEOD (major component of dieldrin) in the tissues of steelhead trout (Salmo gairdneri) embryos, alevins, and fry exposed to dieldrin concentrations ranging from 0.012 to 52 ppb. The fish were held in specially designed exposure chambers provided with continuously renewed...
Resource Type:: Technical Report
Full Text:: , Editor 0 Environmental Health Sciences Series No. 1 EFFECTS OF DIELDRIN ON THE GROWTH AND

Carbon Stocks and Soil Greenhouse Gas Emissions Associated with Forest Conversion to Oil Palm Plantations in Tanjung Puting Tropical Peatlands, Indonesia

Creator:: Novita, Nisa
Abstract:: This dissertation addresses gaps of knowledge associated with how ecosystem carbon stocks and greenhouse gas emissions are affected by land use land cover change in tropical peatlands. This was the first study that paired peat swamp forests with oil palm plantations and analyzed site scale variation on greenhouse gas emissions....
Resource Type:: Dissertation
Full Text:: ........................................................................................................................... 45 Environmental variables and soil properties

Effect of livestock grazing on native bees in a Pacific Northwest bunchgrass prairie

Creator:: Kimoto, Chiho
Abstract:: Native bees play an important role as pollinators of natural vegetation and agricultural crops. Yet many pollinators, including some native bees, are declining in numbers. Some of the potential causes of these declines are habitat destruction and degradation by various human land uses, including urban development and sprawl, construction of...
Resource Type:: Masters Thesis
Full Text:: knowledge of all aspect of plants and the Zumwalt Prairie. I would like to thank Dr. Robbin W. Thorp who

A multi-trophic level examination of recreational impacts on a national wild and scenic river

Creator:: Wright, Kristopher Keith
Abstract:: Initially, components of an aquatic food web were examined to study impacts of recreational use on the aquatic ecology of Quartzville Creek, Oregon in 1995 and 1996. Measurements of the food web components consisted of observations of harlequin ducks (Histrionicus histrionicus), visual counts of the larval caddisfly Dicosmoecus gilvipes, benthic...
Resource Type:: Masters Thesis
Full Text:: growing popularity, the environmental impacts of camping and recreational mining on waterways require

Using auklets to monitor the effects of global warming on the Bering Sea ecosystem : Detecting change in auklet food supply, productivity, and populations

Creator:: Sheffield, Lisa M.
Abstract:: Global warming is progressing more rapidly in polar-regions, and its effects are more pronounced at high latitudes than in other parts of the globe. Changing ocean conditions due to climate change are predicted to have dramatic impacts on marine foodwebs. Seabirds, as upper trophic-level consumers, provide a highly visible and...
Resource Type:: Masters Thesis

Spatial and temporal dynamics of sediment and wood in headwater streams in the central Oregon Coast Range

Creator:: May, Christine L.
Abstract:: Channels that were scoured to bedrock by debris flows provided unique opportunities to calculate the rate of sediment and wood accumulation, to make inferences about processes associated with input and transport of sediment, and to gain insight into the temporal succession of channel morphology following disturbance. In an intensive investigation...
Resource Type:: Dissertation

Effects of a 4-inch suction dredge on benthic macroinvertebrates in southwestern Oregon

Creator:: Perez, Diana H.
Abstract:: Effects of 4-inch (10.16 cm) suction dredge mining on benthic macroinvertebrates in 3rd to 4th order streams were investigated in 1996 by evaluating four mining claim operations in Althouse Creek, Sucker Creek, and Taylor Creek in southwestern Oregon's Rogue River basin. The effects were site-specific. The study showed no significant...
Resource Type:: Masters Thesis

A whale's tale of mtDNA diversity and differentiation : the Antarctic blue whale

Creator:: Sremba, Angela L.
Abstract:: Twentieth century commercial whaling drastically reduced the abundance of great whale populations in the Southern Ocean. Exploitation began on the south Atlantic island of South Georgia, where catch records account for over 175,000 whales killed. Modern whaling within the Southern Ocean depleted populations rapidly, and by 1966, hunting blue whales...
Resource Type:: Masters Thesis

Development of the fisheries of the Eastern North Pacific : a natural-cultural systems perspective

Creator:: Deimling, Elisabeth A.
Abstract:: The eastern margin of the Eastern North Pacific Ocean was classified into physiographic regions based on a suite of physical characteristics. Information on cultural and biological characteristics of this area was meshed with this classification. The result was a classification of the Eastern North Pacific into natural-cultural systems whose boundaries...
Resource Type:: Masters Thesis
Full Text:: system 8 3. Interaction of environmental and organismic system capacities 11 4. Various scales of

The Impacts of Multiple Stressors on Aquatic Invertebrate Communities in the Umatilla River

Creator:: Clark, Hannah
Abstract:: Rivers impacted by human activities often have multiple stressors present. The effects of multiple stressors on biological communities can often be difficult to predict, due to the potential for complex interactions between stressors and communities. This thesis explores the impacts of two stressors often associated with agricultural land use, increased...
Resource Type:: Masters Thesis
Full Text:: water for human use, while at the same time minimizing the harmful environmental consequences, such

Mercury bioaccumulation in remote subalpine lakes : assessing the influence of invasive trout on salamanders

Creator:: Pfleeger, Adam
Abstract:: Mercury (Hg) contamination is a global conservation threat to freshwater ecosystems, detected in even the protected lakes of Olympic National Park (Washington, USA). Although considered some of the most remote and pristine US ecosystems, these lakes are currently subject to multiple environmental stressors, including climate change and fish introductions; adding...
Resource Type:: Masters Thesis
Full Text:: to multiple environmental stressors, including climate change and fish introductions; adding

The effects of environmental stressors on cardiac gene expression and contractility in rainbow trout (Oncorhynchus mykiss)

Creator:: Momoda, Tracey S.
Abstract:: Rainbow trout (Oncorhynchus mykiss) experience a variety of stressors in their natural environment as well as in aquaculture that can have negative effects on their physiology. The effects of physiological stress and endocrine disruption have been well described in fish. However, there is a scarcity of information on the effects...
Resource Type:: Dissertation
Full Text:: The Effects of Environmental Stressors on Cardiac Gene

Foraging behavior of the Pacific harbor seal (Phoca vitulina richardii) in the Pacific Northwest and potential impacts of coastal hypoxia on foraging efficiency

Creator:: Steingass, Sheanna M.
Abstract:: In the last decade, the California Current Large Marine Ecosystem has experienced a trend of increased severity of upwelling-driven coastal hypoxia. This thesis strove to examine the potential upper trophic level impacts of moderate and severe hypoxia in the CCLME. Initially I conducted a literature review of Pacific harbor seal...
Resource Type:: Masters Thesis

Mercury accumulation in fish from Madre de Dios, a goldmining area in the Amazon Basin, Peru

Creator:: Deza Arroyo, Nilton Eduardo
Resource Type:: Masters Thesis
Full Text:: years of activity (IMA, 1995). Therefore, the environmental price for goidmining in the Amazonia is the

Linkages among land use, riparian zones, and uptake and transformation of nitrate in stream ecosystems

Creator:: Sobota, Daniel J.
Abstract:: Land use alters the physical and biological structure of stream ecosystems and potentially alters their capacity to process nitrogen (N), an essential nutrient that has nearly doubled in abundance on the biosphere during the past century from human activities. In this dissertation, I quantified uptake and transformation of nitrate (NO₃⁻)...
Resource Type:: Dissertation
Full Text:: Environmental Monitoring and Assessment Program (EMAP) protocols (http://www.epa.gov/emap2/index.html

ScholarsArchive@OSU

Fish acclimation and the development of tolerance to zinc as a modifying factor in toxicity

Some biological effects of the insecticide sevin on marine bivalves

The multisteady-state nature of toxicant behavior and effect in an aquatic laboratory ecosystem

Biomass and nutrient dynamics associated with deforestation, biomass burning and conversion to pasture in a tropical dry forest in Mexico

Environmental contaminants and ecology of bald eagles in southcentral Oregon

Effects of dieldrin on the growth and development of steelhead trout

Carbon Stocks and Soil Greenhouse Gas Emissions Associated with Forest Conversion to Oil Palm Plantations in Tanjung Puting Tropical Peatlands, Indonesia

Effect of livestock grazing on native bees in a Pacific Northwest bunchgrass prairie

A multi-trophic level examination of recreational impacts on a national wild and scenic river

Using auklets to monitor the effects of global warming on the Bering Sea ecosystem : Detecting change in auklet food supply, productivity, and populations

Spatial and temporal dynamics of sediment and wood in headwater streams in the central Oregon Coast Range

Effects of a 4-inch suction dredge on benthic macroinvertebrates in southwestern Oregon

A whale's tale of mtDNA diversity and differentiation : the Antarctic blue whale

Development of the fisheries of the Eastern North Pacific : a natural-cultural systems perspective

The Impacts of Multiple Stressors on Aquatic Invertebrate Communities in the Umatilla River

Mercury bioaccumulation in remote subalpine lakes : assessing the influence of invasive trout on salamanders

The effects of environmental stressors on cardiac gene expression and contractility in rainbow trout (Oncorhynchus mykiss)

Foraging behavior of the Pacific harbor seal (Phoca vitulina richardii) in the Pacific Northwest and potential impacts of coastal hypoxia on foraging efficiency

Mercury accumulation in fish from Madre de Dios, a goldmining area in the Amazon Basin, Peru

Linkages among land use, riparian zones, and uptake and transformation of nitrate in stream ecosystems

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