Index Catalog // ScholarsArchive@OSU

Resilience in Quaking Aspen: Recent advances and future needs

Creator:: Rogers, Paul C., Eisenberg, Cristina, and St. Clair, Samuel B.
Abstract:: Quaking aspen (Populus tremuloides) sustainability is a topic of intense interest in forest ecology. Reports range from declines to persisting or increasing coverage in some areas. Moreover, there is little agreement on ultimate factors driving changes. Low aspen recruitment has been attributed to climate patterns, past management, herbivore increases, competitive...
Resource Type:: Article
Full Text:: Ph: (435)797-0194 9 email: p.rogers@usu.edu 10 11 Cristina Eisenberg 12 Department of Forest

Wolf, Elk, and Aspen Food Web Relationships: Context and Complexity

Creator:: Eisenberg, Cristina, Seager, S. Trent, and Hibbs, David E.
Abstract:: Like most ecological communities, aspen (Populus tremuloides) forests are influenced by a synergy of bottom-up (resources-driven) and top-down (predator-driven) processes. Since the 1920s, ecologists have observed the decline of many aspen communities throughout the Intermountain West. The extent and possible drivers of this decline are topics of much recent scientific...
Resource Type:: Article
Full Text:: Eisenberg Department of Forest Ecosystems and Society College of Forestry, Oregon State University

Assessment of macroalgal nitrogen limitation in a seasonal upwelling region

Creator:: Fujita, Rodney M., Wheeler, Patricia A., and Edwards, Robert L.
Abstract:: The relationship between nitrogen (N) availability and the growth of macroalgae in a seasonal upwelling region (Yaquina Head, Oregon, USA) was investigated. Water column nutrient concentrations were relatively high and stable during the winter, decreased in early spring, and were highly variable in the summer and early fall. Periods of...
Resource Type:: Article
Full Text:: region Rodney M. Fujita*, Patricia A. Wheeler**, Robert L. Edwards College of Oceanography, Oregon

Unusual Fluorescent Granulomas and Myonecrosis in Danio Rerio Infected by the Microsporidian Pathogen Pseudoloma Neurophilia

Creator:: West, Kylie, Miles, Rodney, Kent, Michael L., and Frazer, J. Kimble
Abstract:: Zebrafish are a powerful model organism to study disease. Like other animal models, Danio rerio colonies are at risk of pathogenic infection. Microsporidia, a group of intracellular fungus-like parasites, are one potential threat. Microsporidian spores germinate and spread causing pathological changes in the central nervous system, skeletal muscle, and other...
Resource Type:: Article

Survival and development of potato psyllid (Hemiptera: Triozidae) on Convolvulaceae: Effects of a plant-fungus symbiosis (Periglandula)

Creator:: Kaur, Navneet, Cooper, William Rodney, Duringer, Jennifer M., Badillo-Vargas, Ismael E., Esparza-Diaz, Gabriela, Rashed, Arash, and Horton, David R.
Abstract:: Plant species in the family Solanaceae are the usual hosts of potato psyllid, Bactericera cockerelli (Sulc) (Hemiptera: Psylloidea: Triozidae). However, the psyllid has also been shown to develop on some species of Convolvulaceae (bindweeds and morning glories). Developmental success on Convolvulaceae is surprising given the rarity of psyllid species worldwide...
Resource Type:: Article
Full Text:: -fungus symbiosis (Periglandula) Navneet Kaur1,2*, William Rodney Cooper2, Jennifer M. Duringer3, Ismael

Structure and proposed mechanism of L-α-glycerophosphate oxidase from Mycoplasma pneumoniae

Creator:: Elkhal, Callia K., Kean, Kelsey M., Parsonage, Derek, Maenpuen, Somchart, Chaiyen, Pimchai, Claiborne, Al, and Karplus, P. Andrew
Abstract:: The formation of hydrogen peroxide (H₂O₂) by the FAD-dependent α-glycerophosphate oxidase (GlpO), is important for the pathogenesis of Streptococcus pneumoniae and Mycoplasma pneumoniae. The structurally known GlpO from Streptococcus sp. (SspGlpO) is similar to the pneumococcal protein (SpGlpO) and provides a guide for drug design against that target. However, M....
Resource Type:: Article
Full Text:: the accession number(s) 4x9m (oxidized) and 4x9n (reduced). Abbreviations: Glp – L-α

Toward autonomous measurements of photosynthetic electron transport rates: An evaluation of active fluorescence-based measurements of photochemistry

Creator:: Silsbe, Greg M., Oxborough, Kevin, Suggett, David J., Forster, Rodney M., Ihnken, Sven, Komárek, Ondřej, Lawrenz, Evelyn, Prášil, Ondřej, Röttgers, Rüdiger, Šicner, Michal, Simis, Stefan G. H., Van Dijk, Mark A., and Kromkamp, Jacco C.
Abstract:: This study presents a methods evaluation and intercalibration of active fluorescence-based measurements of the quantum yield (ϕ'ₚₛᵢᵢ) and absorption coefficient (aₚₛᵢᵢ) of photosystem II (PSII) photochemistry. Measurements of ϕ'ₚₛᵢᵢ, aₚₛᵢᵢ, and irradiance (E) can be scaled to derive photosynthetic electron transport rates (Pₑ), the process that fuels phytoplankton carbon fixation...
Resource Type:: Article
Full Text:: measurements of photochemistry Greg M. Silsbe,†*1 Kevin Oxborough,2 David J. Suggett,3,4 Rodney M. Forster

Viral testing of 10 cases of Theiler's disease and 37 in-contact horses in the absence of equine biologic product administration: A prospective study (2014-2018)

Creator:: Tomlinson, Joy E., Tennant, Bud C., Struzyna, Alyssa, Mrad, Dawn, Browne, Nimet, Whelchel, Dorothy, Johnson, Philip J., Jannieson, Camilla, Lohr, Christiane, V, Bildfell, Robert, McKenzie, Erica C., Laverack, Melissa, Renshaw, Randall W., Dubovi, Edward, Kapoor, Amit, Meirs, Richard S., Belgrave, Rodney, Engiles, Julie, Van de Walle, Gerlinde R., and Divers, Thomas J.
Abstract:: Background A novel equine parvovirus (EqPV-H) was recently discovered in the equine liver with Theiler's disease. Objectives To determine the prevalence of EqPV-H infection in naturally occurring Theiler's disease cases and in-contact horses in the absence of historical equine biologic product administration. Animals Ten cases of Theiler's disease from 6...
Resource Type:: Article
Full Text:: ANDARD AR T I C L E Viral testing of 10 cases of Theiler's disease and 37 in-contact horses in the

Linking Wolves and Plants: Aldo Leopold on Trophic Cascades

Creator:: Ripple, William J. and Beschta, Robert L.
Abstract:: Aldo Leopold, perhaps best known for his revolutionary and poignant essays about nature, was also an eloquent advocate during the 1930s and 1940s of the need to maintain wolves and other large carnivores in forest and range ecosystems.He indicated that their loss set the stage for ungulate irruptions and ecosystem...
Resource Type:: Article
Full Text:: Plants: Aldo Leopold on Trophic Cascades Author(s): WILLIAM J. RIPPLE and ROBERT L. BESCHTA Source

Berry-producing shrub characteristics following wolf reintroduction in Yellowstone National Park

Creator:: Beschta, Robert L. and Ripple, William J.
Abstract:: Gray wolves (Canis lupus) were reintroduced into Yellowstone National Park in 1995-96, thus completing the park’s large predator guild. In the fall of 2010, approximately 15 years after wolf reintroduction, we sampled ten genera/species of berry-producing shrubs within 97 aspen (Populus tremuloides) stands in the park’s northern ungulate winter range....
Resource Type:: Article
Full Text:: following wolf reintroduction in Yellowstone National Park Robert L. Beschta*, and William J. Ripple 1

ScholarsArchive@OSU

Resilience in Quaking Aspen: Recent advances and future needs

Wolf, Elk, and Aspen Food Web Relationships: Context and Complexity

Assessment of macroalgal nitrogen limitation in a seasonal upwelling region

Unusual Fluorescent Granulomas and Myonecrosis in Danio Rerio Infected by the Microsporidian Pathogen Pseudoloma Neurophilia

Survival and development of potato psyllid (Hemiptera: Triozidae) on Convolvulaceae: Effects of a plant-fungus symbiosis (Periglandula)

Structure and proposed mechanism of L-α-glycerophosphate oxidase from Mycoplasma pneumoniae

Toward autonomous measurements of photosynthetic electron transport rates: An evaluation of active fluorescence-based measurements of photochemistry

Viral testing of 10 cases of Theiler's disease and 37 in-contact horses in the absence of equine biologic product administration: A prospective study (2014-2018)

Linking Wolves and Plants: Aldo Leopold on Trophic Cascades

Berry-producing shrub characteristics following wolf reintroduction in Yellowstone National Park

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