Index Catalog // ScholarsArchive@OSU

Capabilities of Detecting Medical Isotope Facilities through Radioxenon Sampling

Creator:: MacDougall, Matthew R.
Abstract:: Medical Isotopes are a necessity in modern medicine for cancer treatments and medical imaging. In order to ensure that the needs and demands are met for the medical procedures, facilities are put in place to produce these isotopes. There are over 25 different isotopes of interest being produced by more...
Resource Type:: Masters Thesis
Full Text:: Radioxenon Sampling AN ABSTRACT OF THE THESIS OF Matthew R. MacDougall for the degree of Master

Two-stage opening of the northwestern basin and range in eastern Oregon : evidence from the Miocene Crane basin

Creator:: Milliard, Justin B.
Abstract:: New data are presented that provide evidence for the onset of extensional deformation in the Northwestern Basin and Range within 1 million years after the eruption of the Steens Basalt at 16.5 Ma. New geologic mapping (1:24,000), stratigraphic sections, and ⁴⁰Ar/³⁹Ar dating of the Crane Basin rocks provide a control...
Resource Type:: Masters Thesis
Full Text:: Basin Abstract approved: Andrew J. Meigs New data are presented that provide evidence for the

The Role of Plant-soil Feedback in the Invasion of Brachypodium sylvaticum in Douglas-fir Forests

Creator:: Esterson, Andrew
Abstract:: Invasive plants have the capacity to transform landscapes and alter ecosystem function, causing significant economic and ecological damage. These effects include displacement and reduction of native flora and fauna, altered fire regimes, modification of biotic and abiotic soil properties, as well as local, regional, and global economic impacts. With such...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Andrew Esterson for the

Aspects of the foraging ecology of humpback whales (Megaptera novaeangliae) in Frederick Sound and Stephens Passage, Southeast Alaska

Creator:: Szabo, Andrew R.
Abstract:: The North Pacific humpback whale (Megaptera novaeangliae) population has been increasing at an average annual rate of ~6% since the early 1990s. In northern Southeast Alaska alone, there are now more whales than estimated for the entire North Pacific several decades ago. An understanding of how this growing population is...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Andrew R

Regional Contingencies in the Relationship between Aboveground Biomass and Litter in the World’s Grasslands

Creator:: O’Halloran, Lydia R., Chu, Chengjin, Bakker, Jonathan D., Davies, Kendi F., Du, Guozhen, Firn, Jennifer, Hagenah, Nicole, Hofmockel, Kirsten S., Knops, Johannes M. H., Li, Wei, Melbourne, Brett A., Borer, Elizabeth T., Morgan, John W., Orrock, John L., Prober, Suzanne M., Stevens, Carly J., Seabloom, Eric W., MacDougall, Andrew S., Cleland, Elsa E., McCulley, Rebecca L., Hobbie, Sarah, Harpole, W. Stan, and DeCrappeo, Nicole M.
Abstract:: Based on regional-scale studies, aboveground production and litter decomposition are thought to positively covary, because they are driven by shared biotic and climatic factors. Until now we have been unable to test whether production and decomposition are generally coupled across climatically dissimilar regions, because we lacked replicated data collected within...
Resource Type:: Article
Full Text:: . Borer2, Eric W. Seabloom2, Andrew S. MacDougall3, Elsa E. Cleland4, Rebecca L. McCulley5, Sarah Hobbie2

Eutrophication weakens stabilizing effects of diversity in natural grasslands

Creator:: Hautier, Yann, Seabloom, Eric W., Borer, Elizabeth T., Adler, Peter B., Harpole, W. Stanley, Hillebrand, Helmut, Lind, Eric M., MacDougall, Andrew S., Stevens, Carly J., Bakker, Jonathan D., Buckley, Yvonne M., Chu, Chengjin, Collins, Scott L., Daleo, Pedro, Damschen, Ellen I., Davies, Kendi F., Fay, Philip A., Firn, Jennifer, Gruner, Daniel S., Jin, Virginia L., Klein, Julia A., Knops, Johannes M. H., La Pierre, Kimberly J., Li, Wei, McCulley, Rebecca L., Melbourne, Brett A., Moore, Joslin L., O'Halloran, Lydia R., Prober, Suzanne M., Risch, Anita C., Sankaran, Mahesh, Schuetz, Martin, and Hector, Andy
Abstract:: Studies of experimental grassland communities¹⁻⁷ have demonstrated that plant diversity can stabilize productivity through species asynchrony, in which decreases in the biomass of some species are compensated for by increases in others[superscript 1,2]. However, it remains unknown whether these findings are relevant to natural ecosystems, especially those for which species...
Resource Type:: Article
Full Text:: . Stanley Harpole4, Helmut Hillebrand5, Eric M. Lind1, Andrew S. MacDougall6, Carly J. Stevens7, Jonathan D

Herbivores and nutrients control grassland plant diversity via light limitation

Creator:: Borer, Elizabeth T., Seabloom, Eric W., Gruner, Daniel S., O'Halloran, Lydia R., Gruner, Daniel S., Harpole, W. Stanley, Hillebrand, Helmut, Lind, Eric M., Alder, Peter B., Alberti, Juan, Anderson, T. Michael, Bakker, Jonathan D., Biederman, Lori, Blumenthal, Dana, Brown, Cynthia S., Brudvig, Lars A., Buckley, Yvonne M., Cadotte, Marc, Chu, Chengjin, Cleland, Elsa E., Crawley, Michael J., Daleo, Pedro, Damschen, Ellen I., Davies, Kendi F., Decrappeo, Nicole M., Du, Guozhen, Firn, Jennifer, Hautier, Yann, Heckman, Robert W., Hector, Andy, HelleRisLambers, Janneke, Iribarne, Oscar, Klein, Julia A., Knops, Johannes M. H., La Pierre, Kimbery J., Leakey, Andrew D. B., Li, Wei, MacDougall, Andrew S., McCulley, Rebecca L., Melbourne, Brett A., Mitchell, Charles E., Moore, Joslin L., Mortensen, Brent, Orrock, John L., Pascual, Jesus, Prober, Suzanne M., Pyke, David A., Risch, Anita C., Schuetz, Martin, Smith, Melinda D., Stevens, Carly J., Sullivan, Lauren L., Williams, Ryan J., Wragg, Peter D., Wright, Justin P., and Yang, Louie H.
Abstract:: Human alterations to nutrient cycles[superscript 1,2] and herbivore communities³⁻⁷ are affecting global biodiversity dramatically². Ecological theory predicts these changes should be strongly counteractive: nutrient addition drives plant species loss through intensified competition for light, whereas herbivores prevent competitive exclusion by increasing ground-level light, particularly in productive systems[superscript 8,9]. Here we...
Resource Type:: Article
Full Text:: Iribarne6, Julia A. Klein10, Johannes M. H. Knops25, Kimberly J. La Pierre26, Andrew D. B. Leakey27, Wei Li3

Predicting invasion in grassland ecosystems: is exotic dominance the real embarrassment of richness?

Creator:: Seabloom, Eric W., Borer, Elizabeth T., Buckley, Yvonne, Cleland, Elsa E., Davies, Kendi, Firn, Jennifer, Harpole, W. Stanley, Hautier, Yann, Lind, Eric, Macdougall, Andrew, Orrock, John L., Prober, Suzanne M., Adler, Peter, Alberti, Juan, Anderson, T. Michael, Bakker, Jonathan D., Biederman, Lori A., Blumenthal, Dana, Brown, Cynthia S., Brudvig, Lars A., Caldeira, Maria, Chu, Chengjin, Crawley, Michael J., Daleo, Pedro, Damschen, Ellen I., D'Antonio, Carla M., Decrappeo, Nicole M., Dickman, Chris R., Du, Guozhen, Fay, Philip A., Frater, Paul, Gruner, Daniel S., Hagenah, Nicole, Hector, Andrew, Helm, Aveliina, Hillebrand, Helmut, Hofmockel, Kirsten S., Humphries, Hope C., Iribarne, Oscar, Jin, Virginia L., Kay, Adam, Kirkman, Kevin P., Klein, Julia A., Knops, Johannes M. H., La Pierre, Kimberly J., Ladwig, Laura M., Lambrinos, John G., Leakey, Andrew D. B., Li, Qi, Li, Wei, Mcculley, Rebecca, Melbourne, Brett, Mitchell, Charles E., Moore, Joslin L., Morgan, John, Mortensen, Brent, O'Halloran, Lydia R., Paertel, Meelis, Pascual, Jesus, Pyke, David A., Risch, Anita C., Salguero-Gomez, Roberto, Sankaran, Mahesh, Schuetz, Martin, Simonsen, Anna, Smith, Melinda, Stevens, Carly, Sullivan, Lauren, Wardle, Glenda M., Wolkovich, Elizabeth M., Wragg, Peter D., Wright, Justin, and Yang, Louie
Abstract:: Invasions have increased the size of regional species pools, but are typically assumed to reduce native diversity. However, global-scale tests of this assumption have been elusive because of the focus on exotic species richness, rather than relative abundance. This is problematic because low invader richness can indicate invasion resistance by...
Resource Type:: Article

Plant species' origin predicts dominance and response to nutrient enrichment and herbivores in global grasslands

Creator:: Seabloom, Eric W., Borer, Elizabeth T., Buckley, Yvonne M., Cleland, Elsa E., Davies, Kendi F., Firn, Jennifer, Harpole, W. Stanley, Hautier, Yann, Lind, Eric M., MacDougall, Andrew S., Orrock, John L., Prober, Suzanne M., Adler, Peter B., Anderson, T. Michael, Bakker, Jonathan D., Biederman, Lori A., Blumenthal, Dana M., Brown, Cynthia S., Brudvig, Lars A., Cadotte, Marc, Chu, Chengjin, Cottingham, Kathryn L., Crawley, Michael J., Damschen, Ellen I., Dantonio, Carla M., DeCrappeo, Nicole M., Du, Guozhen, Fay, Philip A., Frater, Paul, Gruner, Daniel S., Hagenah, Nicole, Hector, Andy, Hillebrand, Helmut, Hofmockel, Kirsten S., Humphries, Hope C., Jin, Virginia L., Kay, Adam, Kirkman, Kevin P., Klein, Julia A., Knops, Johannes M. H., La Pierre, Kimberly J., Ladwig, Laura, Lambrinos, John G., Li, Qi, Li, Wei, Marushia, Robin, McCulley, Rebecca L., Melbourne, Brett A., Mitchell, Charles E., Moore, Joslin L., Morgan, John, Mortensen, Brent, O'Halloran, Lydia R., Pyke, David A., Risch, Anita C., Sankaran, Mahesh, Schuetz, Martin, Simonsen, Anna, Smith, Melinda D., Stevens, Carly J., Sullivan, Lauren, Wolkovich, Elizabeth, Wragg, Peter D., Wright, Justin, and Yang, Louie
Abstract:: Exotic species dominate many communities; however the functional significance of species’ biogeographic origin remains highly contentious. This debate is fuelled in part by the lack of globally replicated, systematic data assessing the relationship between species provenance, function and response to perturbations. We examined the abundance of native and exotic plant...
Resource Type:: Article

Diet variability of forage fishes in the Northern California Current System

Creator:: Hill, Andrew D., Daly, Elizabeth A., and Brodeur, Richard D.
Abstract:: As fisheries management shifts to an ecosystem-based approach, understanding energy pathways and trophic relationships in the Northern California Current (NCC) will become increasingly important for predictive modeling and understanding ecosystem response to changing ocean conditions. In the NCC, pelagic forage fishes are a critical link between seasonal and interannual variation...
Resource Type:: Article
Full Text:: variability of forage fishes in the Northern California Current System Andrew D. Hill a, Elizabeth A. Daly a

ScholarsArchive@OSU

Capabilities of Detecting Medical Isotope Facilities through Radioxenon Sampling

Two-stage opening of the northwestern basin and range in eastern Oregon : evidence from the Miocene Crane basin

The Role of Plant-soil Feedback in the Invasion of Brachypodium sylvaticum in Douglas-fir Forests

Aspects of the foraging ecology of humpback whales (Megaptera novaeangliae) in Frederick Sound and Stephens Passage, Southeast Alaska

Regional Contingencies in the Relationship between Aboveground Biomass and Litter in the World’s Grasslands

Eutrophication weakens stabilizing effects of diversity in natural grasslands

Herbivores and nutrients control grassland plant diversity via light limitation

Predicting invasion in grassland ecosystems: is exotic dominance the real embarrassment of richness?

Plant species' origin predicts dominance and response to nutrient enrichment and herbivores in global grasslands

Diet variability of forage fishes in the Northern California Current System

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