Index Catalog // ScholarsArchive@OSU

Spatiotemporal Characterization of Sclerotinia Crown Rot Epidemics in Pyrethrum

Creator:: Scott, Jason B., Gent, David H., Pethybridge, Sarah J., and Hay, Frank S.
Abstract:: Sclerotinia crown rot, caused by Sclerotinia minor and S. sclerotiorum, is a disease of pyrethrum in Australia that may cause substantial decline in plant density. The spatiotemporal characteristics of the disease were quantified in 14 fields during three growing seasons. Fitting the binary power law to disease incidence provided slope...
Resource Type:: Article
Full Text:: University, Department of Botany and Plant Pathology, Corvallis 97331; Sarah J. Pethybridge, The New Zealand

Patterns in the occupancy and abundance of the globally rare lichen Erioderma pedicellatum in Denali National Park and Preserve, Alaska

Creator:: Stehn, Sarah E., Nelson, Peter R., Roland, Carl A., and Jones, Jennifer R.
Abstract:: We investigated habitat attributes related to the occupancy of the globally rare and endangered epiphytic lichen, Erioderma pedicellatum, in a newly discovered (2009) population center in Denali National Park and Preserve (DNPP), Alaska. We measured forest, tree and epiphytic lichen community characteristics on eighty-five systematically selected plots in four study...
Resource Type:: Article
Full Text:: lichen Erioderma pedicellatum in Denali National Park and Preserve, Alaska Sarah E. Stehn1,2, Peter R

Effects of disturbance scale on soil microbial communities in the Western Cascades of Oregon

Creator:: Kageyama, Stacie A., Posavatz, Nancy R., Jones, Sarah S., Waterstripe, Kirk E., Bottomley, Peter J., Cromack Jr., Kermit, and Myrold, David D.
Abstract:: To gain a better understanding of how rapidly microbial communities respond to different magnitudes of perturbation that mimic minor or catastrophic disturbances. Two montane sites in the western Cascade Mountains of Oregon with adjacent areas of forest and meadow vegetation were studied. A reciprocal transplant experiment evaluated both minor (soil...
Resource Type:: Article
Full Text:: microbial communities in the Western Cascades of Oregon Stacie A. Kageyama & Nancy R. Posavatz & Sarah S

Defenses of Susceptible and Resistant Chinook Salmon (Onchorhynchus tshawytscha) Against the Myxozoan Parasite Ceratomyxa shasta

Creator:: Bjork, Sarah J., Zhang, Yong-An, Hurst, Charlene N., Alonso-Naveiro, Maria E., Alexander, Julie D., Sunyer, J. Oriol, and Bartholomew, Jerri L.
Abstract:: We investigated intra-specific variation in the response of salmon to infection with the myxozoan Ceratomyxa shasta by comparing the progress of parasite infection and measures of host immune response in susceptible and resistant Chinook salmon Oncorhynchus tshawytscha at days 12, 25 and 90 post exposure. There were no differences in...
Resource Type:: Article
Full Text:: ) Against 1 the Myxozoan Parasite Ceratomyxa shasta 2 3 4 Sarah J. Bjorka, Yong-An Zhangb,c

Acoustic classification of multiple simultaneous bird species: A multi-instance multi-label approach

Creator:: Briggs, Forrest, Lakshminarayanan, Balaji, Neal, Lawrence, Fern, Xiaoli Z., Raich, Raviv, Hadley, Sarah J. K., Hadley, Adam S., and Betts, Matthew G.
Abstract:: Although field-collected recordings typically contain multiple simultaneously vocalizing birds of different species, acoustic species classification in this setting has received little study so far. This work formulates the problem of classifying the set of species present in an audio recording using the multi-instance multi-label (MIML) framework for machine learning, and...
Resource Type:: Article
Full Text:: University, Corvallis, Oregon 97331 Sarah J. K. Hadley, Adam S. Hadley, and Matthew G. Betts Department of

Investigating Microbial Eukaryotic Diversity from a Global Census: Insights from a Comparison of Pyrotag and Full-Length Sequences of 18S rRNA Genes

Creator:: Lie, Alle A. Y., Liu, Zhenfeng, Hu, Sarah K., Sherr, Evelyn B., Sherr, Barry F., Jones, Adriane C., Kim, Diane Y., Countway, Peter D., Amaral-Zettler, Linda A., Cary, S. Craig, Gast, Rebecca J., and Caron, David A.
Abstract:: Next-generation DNA sequencing (NGS) approaches are rapidly surpassing Sanger sequencing for characterizing the diversity of natural microbial communities. Despite this rapid transition, few comparisons exist between Sanger sequences and the generally much shorter reads of NGS. Operational taxonomic units (OTUs) derived from full-length (Sanger sequencing) and pyrotag (454 sequencing of...
Resource Type:: Article
Full Text:: Full-Length Sequences of 18S rRNA Genes Alle A. Y. Lie,a Zhenfeng Liu,a Sarah K. Hu,a Adriane C. Jones

A conservation assessment of West Coast (USA) estuaries

Creator:: Gleason, Mary G., Newkirk, Sarah, Merrifield, Matthew S., Howard, Jeanette, Cox, Robin, Webb, Megan, Koepcke, Jennifer, Stranko, Brian, Taylor, Bethany, Beck, Michael W., Fuller, Roger, Dye, Paul, Vander Schaaf, Dick, and Carter, Jena
Abstract:: This assessment outlines an enhanced planning approach for West Coast estuaries that incorporates an evaluation of the regional context for estuarine conservation and recommends an approach to site-scale planning with more focus on ecological processes and functions.
Resource Type:: Technical Report
Full Text:: ) ESTUARIES Mary G. Gleason, Sarah Newkirk, Matthew S. Merrifield, Jeanette Howard, Robin Cox, Megan Webb

Restoration of Exotic Annual Grass-Invaded Rangelands: Importance of Seed Mix Composition

Creator:: Davies, Kirk W., Johnson, Dustin D., and Nafus, Aleta M.
Abstract:: Restoration of exotic annual grass-invaded rangelands is needed to improve ecosystem function and services. Increasing plant species richness is generally believed to increase resistance to invasion and increase desired vegetation. However, the effects of species richness and individual plant life forms in seed mixes used to restore rangelands invaded by...
Resource Type:: Article
Full Text:: the interaction between treatment and year (P . 0.05; Figures 2C and 2D). Bare ground, litter, and

Are Early Summer Wildfires an Opportunity to Revegetate Exotic Annual Grass–Invaded Plant Communities?

Creator:: Davies, Kirk W., Nafus, Aleta M., and Johnson, Dustin D.
Abstract:: Medusahead (Taeniatherum caput-medusae [L.] Nevski) is an exotic annual grass invading western rangelands. Successful revegetation of invaded-plant communities can be prohibitively expensive because it often requires iterative applications of integrated control and revegetation treatments. Prescribed burning has been used to control medusahead and prepare seedbeds for revegetation, but burning has...
Resource Type:: Article
Full Text:: perennial grass cover did not vary by treatment (Fig. 2C; P¼0.10). Native perennial grass cover was 3.8- to

Mowing Wyoming Big Sagebrush Communities With Degraded Herbaceous Understories: Has a Threshold Been Crossed?

Creator:: Davies, Kirk W., Bates, Jonathan D., and Nafus, Aleta M.
Abstract:: Wyoming big sagebrush (Artemisia tridentata ssp. wyomingensis [Beetle & A. Young] S.L. Welsh) plant communities with degraded native herbaceous understories occupy vast expanses of the western United States. Restoring the native herbaceous understory in these communities is needed to provide higher-quality wildlife habitat, decrease the risk of exotic plant invasion,...
Resource Type:: Article
Full Text:: shrub cover did not differ between treatments in any year of the study (Fig. 2C; P. 0.05). Moss cover

ScholarsArchive@OSU

Spatiotemporal Characterization of Sclerotinia Crown Rot Epidemics in Pyrethrum

Patterns in the occupancy and abundance of the globally rare lichen Erioderma pedicellatum in Denali National Park and Preserve, Alaska

Effects of disturbance scale on soil microbial communities in the Western Cascades of Oregon

Defenses of Susceptible and Resistant Chinook Salmon (Onchorhynchus tshawytscha) Against the Myxozoan Parasite Ceratomyxa shasta

Acoustic classification of multiple simultaneous bird species: A multi-instance multi-label approach

Investigating Microbial Eukaryotic Diversity from a Global Census: Insights from a Comparison of Pyrotag and Full-Length Sequences of 18S rRNA Genes

A conservation assessment of West Coast (USA) estuaries

Restoration of Exotic Annual Grass-Invaded Rangelands: Importance of Seed Mix Composition

Are Early Summer Wildfires an Opportunity to Revegetate Exotic Annual Grass–Invaded Plant Communities?

Mowing Wyoming Big Sagebrush Communities With Degraded Herbaceous Understories: Has a Threshold Been Crossed?

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