Index Catalog // ScholarsArchive@OSU

Water quality criteria for an acidifying ocean: Challenges and opportunities for improvement

Creator:: Weisberg, Stephen B., Bednaršek, Nina, Feely, Richard A., Chan, Francis, Boehm, Alexandria B., Sutula, Martha, Ruesink, Jennifer L., Hales, Burke, Largier, John L., and Newton, Jan A.
Abstract:: This is PMEL Contribution 4396. Acidification has sparked discussion about whether regulatory agencies should place coastal waters on the Clean Water Act 303(d) impaired water bodies list. Here we describe scientific challenges in assessing impairment with existing data, exploring use of both pH and biological criteria. Application of pH criteria...
Resource Type:: Article
Full Text:: opportunities for improvement Stephen B. Weisberg a, *, Nina Bednar�sek b, Richard A. Feely c, Francis Chan d

Impacts of Coastal Acidification on the Pacific Northwest Shellfish Industry and Adaptation Strategies Implemented in Response

Creator:: Barton, Alan, Waldbusser, George G., Feely, Richard A., Weisberg, Stephen B., Newton, Jan A., Hales, Burke, Cudd, Sue, Eudeline, Benoit, Langdon, Chris J., Jefferds, Ian, King, Teri, Suhrbier, Andy, and McLaughlin, Karen
Abstract:: In 2007, the US west coast shellfish industry began to feel the effects of unprecedented levels of larval mortality in commercial hatcheries producing the Pacific oyster Crassostrea gigas. Subsequently, researchers at Whiskey Creek Shellfish Hatchery, working with academic and government scientists, showed a high correlation between aragonite saturation state (Ω[subscript]arag)...
Resource Type:: Article
Full Text:: Implemented in Response By Alan Barton, George G. Waldbusser, Richard A. Feely, Stephen B. Weisberg, Jan A

Core Principles of the California Current Acidification Network: Linking Chemistry, Physics, and Ecological Effects

Creator:: McLaughlin, Karen, Weisberg, Stephen B., Dickson, Andrew G., Hofman, Gretchen E., Newton, Jan A., Aseltine-Neilson, Deborah, Barton, Alan, Cudd, Sue, Feely, Richard A., Jefferds, Ian W., Jewett, Elizabeth B, King, Teri, Langdon, Chris J., McAfee, Skyli, Pleschner-Steele, Diane, and Steele, Bruce
Abstract:: Numerous monitoring efforts are underway to improve understanding of ocean acidification and its impacts on coastal environments, but there is a need to develop a coordinated approach that facilitates spatial and temporal comparisons of drivers and responses on a regional scale. Toward that goal, the California Current Acidification Network (C-CAN)...
Resource Type:: Article
Full Text:: Flight Center, and ORBIMAGE By Karen McLaughlin, Stephen B. Weisberg, Andrew G. Dickson, Gretchen E

Spatial Patterns of Ergot and Quantification of Sclerotia in Perennial Ryegrass Seed Fields in Eastern Oregon

Creator:: Dung, Jeremiah K. S., Alderman, Stephen C., Walenta, Darrin L., Hamm, Philip B., and Alderman, Stephen C.
Abstract:: Ergot, caused by Claviceps purpurea, is a major disease of perennial ryegrass grown for seed in eastern Oregon. The objective of this research was to quantify and describe the spatial patterns of ergot severity in each of three 50-ha commercial fields of perennial ryegrass grown for seed in 2012 and...
Resource Type:: Article
Full Text:: , Madras; Stephen C. Alderman, United States Department of Agriculture–Agricultural Research Service

Rapid Quantification of Soilborne Pathogen Communities in Wheat-based Long-term Field Experiments

Creator:: Smiley, Richard W., Machado, Stephen, Rhinhart, Karl E. L., Reardon, Catherine L., and Wuest, Stewart B.
Abstract:: This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by The American Phytopathological Society and can be found at: https://doi.org/10.1094/PDIS-09-15-1020-RE
Resource Type:: Article
Full Text:: Communities in Wheat-based Long-term Field Experiments Richard W. Smiley, Stephen Machado, and Karl E

Afternoon Ascospore Release in Claviceps purpurea Optimizes Perennial Ryegrass Infection

Creator:: Alderman, Stephen C., Walenta, Darrin L., Hamm, Philip B., Martin, Ruth C., Dung, Jeremiah, and Kosman, Evsey
Abstract:: In Kentucky bluegrass (Poa pratensis), Claviceps purpurea, the causal agent of ergot, typically releases ascospores during the early-morning hours, between about midnight and 10:00 A.M., corresponding to time of flowering, when the unfertilized ovaries are most susceptible to infection. During aeromycology studies of C. purpurea in perennial ryegrass (Lolium perenne)...
Resource Type:: Article

Effects of Two Environmental Best Management Practices on Pond Water and Effluent Quality and Growth of Nile Tilapia, Oreochromis niloticus

Creator:: Frimpong, Emmanuel A., Ansah, Yaw B., Amisah, Stephen, Adjei-Boateng, Daniel, Agbo, Nelson W., and Egna, Hillary
Abstract:: The trajectory of aquaculture growth in sub-Saharan Africa has necessitated closer attention to the use of environmental best management practices (BMPs). Two BMPs in particular, water reuse and floating feeds, are being promoted for adoption by pond fish farmers in sub-Saharan Africa. In this study, we investigated: (1) the effect...
Resource Type:: Article
Full Text:: , Oreochromis niloticus Frimpong, E. A., Ansah, Y. B., Amisah, S., Adjei-Boateng, D., Agbo, N. W., & Egna, H

Sensitivity of Evapotranspiration Components in Remote Sensing-Based Models

Creator:: Talsma, Carl J., Good, Stephen P., Miralles, Diego G., Fisher, Joshua B., Martens, Brecht, Jimenez, Carlos, and Purdy, Adam J.
Abstract:: Accurately estimating evapotranspiration (ET) at large spatial scales is essential to our understanding of land-atmosphere coupling and the surface balance of water and energy. Comparisons between remote sensing-based ET models are difficult due to diversity in model formulation, parametrization and data requirements. The constituent components of ET have been shown...
Resource Type:: Article
Full Text:: evapotranspiration in remote sensing-based models Carl J. Talsmaa,⁎, Stephen P. Gooda, Carlos Jimenezb, Brecht

Influence of forest structure and experimental green-tree retention on northern flying squirrel (Glaucomys sabrinus) abundance

Creator:: Holloway, Gillian L., Smith, Winston P., Halpern, Charles B., Gitzen, Robert A., Maguire, Christine C., and West, Stephen D.
Abstract:: In many regions of the world, forest management has shifted from practices emphasizing timber production to more sustainable harvesting that integrates ecological values, including maintenance of biodiversity, wildlife habitat, and ecological goods and services. To this end, management strategies emphasize retention of stand structures that meet the needs of forest-obligate...
Resource Type:: Article

Effects of Hypoxia on Consumption, Growth, and RNA:DNA Ratios of Young Yellow Perch

Creator:: Roberts, James J., Brandt, Stephen B., Fanslow, David, Ludsin, Stuart A., Pothoven, Steven A., Scavia, Donald, and Höök, Tomas O.
Abstract:: As in various freshwater and coastal marine ecosystems worldwide, seasonal bottom water hypoxia is a recurring phenomenon in Lake Erie's central basin. While bottom hypoxia can strongly affect sessile benthic animals, its effects on mobile organisms such as fish are less understood. We evaluated the potential for bottom hypoxia to...
Resource Type:: Article
Full Text:: , 4840 South State Road, Ann Arbor, Michigan 48108-9719, USA Stephen B. Brandt Oregon Sea Grant Program

ScholarsArchive@OSU

Water quality criteria for an acidifying ocean: Challenges and opportunities for improvement

Impacts of Coastal Acidification on the Pacific Northwest Shellfish Industry and Adaptation Strategies Implemented in Response

Core Principles of the California Current Acidification Network: Linking Chemistry, Physics, and Ecological Effects

Spatial Patterns of Ergot and Quantification of Sclerotia in Perennial Ryegrass Seed Fields in Eastern Oregon

Rapid Quantification of Soilborne Pathogen Communities in Wheat-based Long-term Field Experiments

Afternoon Ascospore Release in Claviceps purpurea Optimizes Perennial Ryegrass Infection

Effects of Two Environmental Best Management Practices on Pond Water and Effluent Quality and Growth of Nile Tilapia, Oreochromis niloticus

Sensitivity of Evapotranspiration Components in Remote Sensing-Based Models

Influence of forest structure and experimental green-tree retention on northern flying squirrel (Glaucomys sabrinus) abundance

Effects of Hypoxia on Consumption, Growth, and RNA:DNA Ratios of Young Yellow Perch

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