Index Catalog // ScholarsArchive@OSU

Evaluation and improvement of the Community Land Model (CLM4) in Oregon forests

Creator:: Hudiburg, T. W., Law, B. E., and Thornton, P. E.
Abstract:: Ecosystem process models are important tools for determining the interactive effects of global change and disturbance on forest carbon dynamics. Here we evaluated and improved terrestrial carbon cycling simulated by the Community Land Model (CLM4), the land model portion of the Community Earth System Model (CESM1.0.4). Our analysis was conducted...
Resource Type:: Article
Full Text:: Evaluation and improvement of the Community Land Model (CLM4) in Oregon forests T. W. Hudiburg1, B. E. Law2

Predation on an Upper Trophic Marine Predator, the Steller Sea Lion: Evaluating High Juvenile Mortality in a Density Dependent Conceptual Framework

Creator:: Horning, Markus and Mellish, Jo-Ann E.
Abstract:: The endangered western stock of the Steller sea lion (Eumetopias jubatus) - the largest of the eared seals - has declined by 80% from population levels encountered four decades ago. Current overall trends from the Gulf of Alaska to the Aleutian Islands appear neutral with strong regional heterogeneities. A published...
Resource Type:: Article
Full Text:: Markus Horning1,2*, Jo-Ann E. Mellish3,4 1 Department of Fisheries and Wildlife, Marine Mammal Institute

Amplification and dampening of soil respiration by changes in temperature variability

Creator:: Sierra, C. A., Harmon, M. E., Thomann, E., Perakis, S. S., and Loescher, H. W.
Abstract:: Accelerated release of carbon from soils is one of the most important feedbacks related to anthropogenically induced climate change. Studies addressing the mechanisms for soil carbon release through organic matter decomposition have focused on the effect of changes in the average temperature, with little attention to changes in temperature variability....
Resource Type:: Article
Full Text:: Amplification and dampening of soil respiration by changes in temperature variability C. A. Sierra1,*, M. E

A dual isotope approach to isolate soil carbon pools of different turnover times

Creator:: Torn, M. S., Kleber, M., Zavaleta, E. S., Zhu, B., Field, C. B., and Trumbore, S. E.
Abstract:: Soils are globally significant sources and sinks of atmospheric CO₂. Increasing the resolution of soil carbon turnover estimates is important for predicting the response of soil carbon cycling to environmental change. We show that soil carbon turnover times can be more finely resolved using a dual isotope label like the...
Resource Type:: Article
Full Text:: . Kleber3, E. S. Zavaleta4, B. Zhu1, C. B. Field5, and S. E. Trumbore6 1Earth Sciences Division, Lawrence

Calcium carbonate production response to future ocean warming and acidification

Creator:: Pinsonneault, A. J., Matthews, H. D., Galbraith, E. D., and Schmittner, A.
Abstract:: Anthropogenic carbon dioxide (CO₂) emissions are acidifying the ocean, affecting calcification rates in pelagic organisms, and thereby modifying the oceanic carbon and alkalinity cycles. However, the responses of pelagic calcifying organisms to acidification vary widely between species, contributing uncertainty to predictions of atmospheric CO₂ and the resulting climate change. At...
Resource Type:: Article
Full Text:: . Matthews1, E. D. Galbraith3, and A. Schmittner4 1Department of Geography, Planning and Environment

Factors Controlling Soil Microbial Biomass and Bacterial Diversity and Community Composition in a Cold Desert Ecosystem: Role of Geographic Scale

Creator:: Van Horn, David J., Van Horn, M. Lee, Barrett, John E., Gooseff, Michael N., Altrichter, Adam E., Geyer, Kevin M., Zeglin, Lydia H., and Takacs-Vesbach, Cristina D.
Abstract:: Understanding controls over the distribution of soil bacteria is a fundamental Understanding controls over the distribution of soil bacteria is a fundamental step toward describing soil ecosystems, understanding their functional capabilities, and predicting their responses to environmental change. This study investigated the controls on the biomass, species richness, and community...
Resource Type:: Article
Full Text:: Scale David J. Van Horn1, M. Lee Van Horn2, John E. Barrett3, Michael N. Gooseff4, Adam E. Altrichter3

A new instrument to measure plot-scale runoff

Creator:: Stewart, R. D., Liu, Z., Rupp, D. E., Higgins, C. W., and Selker, J. S.
Abstract:: Accurate measurement of the amount and timing of surface runoff at multiple scales is needed to understand fundamental hydrological processes. At the plot scale (i.e., length scales on the order of 1–10 m) current methods for direct measurement of runoff either store the water in a collection vessel, which is...
Resource Type:: Article
Full Text:: runoff A new instrument to measure plot-scale runoff Stewart, R. D., Liu, Z., Rupp, D. E., Higgins, C

Evaluating Paratransgenesis as a Potential Control Strategy for African Trypanosomiasis

Creator:: Medlock, Jan, Atkins, Katherine E., Thomas, David N., Aksoy, Serap, and Galvani, Alison P.
Abstract:: Genetic-modification strategies are currently being developed to reduce the transmission of vector-borne diseases, including African trypanosomiasis. For tsetse, the vector of African trypanosomiasis, a paratransgenic strategy is being considered: this approach involves modification of the commensal symbiotic bacteria Sodalis to express trypanosome-resistance-conferring products. Modified Sodalis can then be driven into...
Resource Type:: Article
Full Text:: Control Strategy for African Trypanosomiasis Jan Medlock1,2*, Katherine E. Atkins2, David N. Thomas2

Evolutionary Biology for the 21st Century

Creator:: Losos, Jonathan B., Arnold, Stevan J., Bejerano, Gill, Brodie, E. D. III, Hibbett, David, Hoekstra, Hopi E., Mindell, David P., Monteiro, Antonia, Moritz, Craig, Orr, H. Allen, Petrov, Dmitri A., Renner, Susanne S., Ricklefs, Robert E., Soltis, Pamela S., and Turner, Thomas L.
Abstract:: We live in an exciting time for biology. Technological advances have made data collection easier and cheaper than we could ever have imagined just 10 years ago. We can now synthesize and analyze large data sets containing genomes, transcriptomes, proteomes, and multivariate phenotypes. At the same time, society's need for...
Resource Type:: Article
Full Text:: Century Jonathan B. Losos1*, Stevan J. Arnold2, Gill Bejerano3, E. D. Brodie III4, David Hibbett5, Hopi E

Estimating heterotrophic respiration at large scales: challenges, approaches, and next steps

Creator:: Bond-Lamberty, Ben, Epron, Daniel, Harden, Jennifer, Harmon, Mark E., Hoffman, Forrest, Kumar, Jitendra, David McGuire, Anthony, and Vargas, Rodrigo
Abstract:: Heterotrophic respiration (HR), the aerobic and anaerobic processes mineralizing organic matter, is a key carbon flux but one impossible to measure at scales significantly larger than small experimental plots. This impedes our ability to understand carbon and nutrient cycles, benchmark models, or reliably upscale point measurements. Given that a new...
Resource Type:: Article
Full Text:: -Lamberty,1,† Daniel Epron,2 Jennifer Harden,3 Mark E. Harmon,4 Forrest Hoffman,5 Jitendra Kumar,5 Anthony

ScholarsArchive@OSU

Evaluation and improvement of the Community Land Model (CLM4) in Oregon forests

Predation on an Upper Trophic Marine Predator, the Steller Sea Lion: Evaluating High Juvenile Mortality in a Density Dependent Conceptual Framework

Amplification and dampening of soil respiration by changes in temperature variability

A dual isotope approach to isolate soil carbon pools of different turnover times

Calcium carbonate production response to future ocean warming and acidification

Factors Controlling Soil Microbial Biomass and Bacterial Diversity and Community Composition in a Cold Desert Ecosystem: Role of Geographic Scale

A new instrument to measure plot-scale runoff

Evaluating Paratransgenesis as a Potential Control Strategy for African Trypanosomiasis

Evolutionary Biology for the 21st Century

Estimating heterotrophic respiration at large scales: challenges, approaches, and next steps

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