Index Catalog // ScholarsArchive@OSU

Juvenile coho salmon movement, growth and survival in a coastal basin of southern Oregon

Creator:: Weybright, Adam D. and Giannico, Guillermo R.
Abstract:: Juvenile salmonids display highly variable spatial and temporal patterns of early dispersal that are influenced by density-dependent and density-independent factors. Although juvenile coho salmon (Oncorhynchus kisutch) movement patterns in streams and their relationship with body mass and growth have been examined in previous studies, most observations were limited to one...
Resource Type:: Article

Pore-scale displacement mechanisms as a source of hysteresis for two-phase flow in porous media

Creator:: Schlüter, S., Berg, S., Rücker, M., Armstrong, R. T., Vogel, H., Hilfer, R., and Wildenschild, D.
Abstract:: The macroscopic description of the hysteretic behavior of two-phase flow in porous media remains a challenge. It is not obvious how to represent the underlying pore-scale processes at the Darcy-scale in a consistent way. Darcy-scale thermodynamic models do not completely eliminate hysteresis and our findings indicate that the shape of...
Resource Type:: Article
Full Text:: , M. R€ucker3,4, R. T. Armstrong5, H.-J. Vogel1,6, R. Hilfer7, and D. Wildenschild2 1Department of

The dynamic pipeline: hydraulic capacitance and xylem hydraulic safety in four tall conifer species

Creator:: McCulloh, Katherine A., Johnson, Daniel M., Meinzer, Frederick C., and Woodruff, David R.
Abstract:: Recent work has suggested that plants differ in their relative reliance on structural avoidance of embolism versus maintenance of the xylem water column through dynamic traits such as capacitance, but we still know little about how and why species differ along this continuum. It is even less clear how or...
Resource Type:: Article

Natural-Channel-Design Restorations that Changed Geomorphology Have Little Effect on Macroinvertebrate Communities in Headwater Streams

Creator:: Ernst, Anne G., Warren, Dana R., and Baldigo, Barry P.
Abstract:: Stream restorations that increase geomorphic stability can improve habitat quality, which should benefit selected species and local aquatic ecosystems. This assumption is often used to define primary restoration goals; yet, biological responses to restoration are rarely monitored or evaluated methodically. Macroinvertebrate communities were inventoried at 6 study reaches within 5...
Resource Type:: Article
Full Text:: rec_790.dvi R E S E A R C H A R T I C L E Natural-Channel

Carbon stocks and accumulation rates in Pacific Northwest forests: role of stand age, plant community, and productivity

Creator:: Gray, Andrew N., Whittier, Thomas R., and Harmon, Mark E.
Abstract:: Forest ecosystems are removing significant amounts of carbon from the atmosphere. Both abiotic resource availability and biotic interactions during forest succession affect C accumulation rates and maximum C stocks. However, the timing and controls on the peak and decline in C accumulation rates as stands age, trees increase in size,...
Resource Type:: Article

On the reproductive success of early-generation hatchery fish in the wild

Creator:: Christie, Mark R., Ford, Michael J., and Blouin, Michael S.
Abstract:: Large numbers of hatchery salmon spawn in wild populations each year. Hatchery fish with multiple generations of hatchery ancestry often have heritably lower reproductive success than wild fish and may reduce the fitness of an entire population. Whether this reduced fitness also occurs for hatchery fish created with local- and...
Resource Type:: Article

Empirical algorithms to estimate water column pH in the Southern Ocean

Creator:: Williams, N. L., Juranek, L. W., Johnson, K. S., Feely, R. A., Riser, S. C., Talley, L. D., Russell, J. L., Sarmiento, J. L., and Wanninkhof, R.
Abstract:: Empirical algorithms are developed using high-quality GO-SHIP hydrographic measurements of commonly measured parameters (temperature, salinity, pressure, nitrate, and oxygen) that estimate pH in the Pacific sector of the Southern Ocean. The coefficients of determination, R² , are 0.98 for pH from nitrate (pH^N) and 0.97 for pH from oxygen (pH^Ox)...
Resource Type:: Article

Host species composition influences infection severity among amphibians in the absence of spillover transmission

Creator:: Han, Barbara A., Kerby, Jacob L., Searle, Catherine L., Storfer, Andrew, and Blaustein, Andrew R.
Abstract:: Wildlife epidemiological outcomes can depend strongly on the composition of an ecological community, particularly when multiple host species are affected by the same pathogen. However, the relationship between host species richness and disease risk can vary with community context and with the degree of spillover transmission that occurs among co-occurring...
Resource Type:: Article

Phenology of particle size distributions and primary productivity in the North Pacific subtropical gyre (Station ALOHA)

Creator:: White, Angelicque E., Letelier, Ricardo M., Whitmire, Amanda L., Barone, Benedetto, Bidigare, Robert R., Church, Matthew J., and Karl, David M.
Abstract:: The particle size distribution (PSD) is a critical aspect of the oceanic ecosystem. Local variability in the PSD can be indicative of shifts in microbial community structure and reveal patterns in cell growth and loss. The PSD also plays a central role in particle export by influencing settling speed. Satellite-based...
Resource Type:: Article
Full Text:: ., Letelier, R. M., Whitmire, A. L., Barone, B., Bidigare, R. R., Church, M. J., & Karl, D. M. (2015

Particle distributions and dynamics in the euphotic zone of the North Pacific Subtropical Gyre

Creator:: Barone, Benedetto, Bidigare, Robert R., Church, Matthew J., Karl, David M., Letelier, Ricardo M., and White, Angelicque E.
Abstract:: During the summer of 2012, we used laser diffractometry to investigate the temporal and vertical variability of the particle size spectrum (1.25–100 µm in equivalent diameter) in the euphotic zone of the North Pacific Subtropical Gyre. Particles measured with this optical method accounted for ∼40% of the particulate carbon stocks...
Resource Type:: Article
Full Text:: of the North Pacific Subtropical Gyre Barone, B., Bidigare, R. R., Church, M. J., Karl, D. M

ScholarsArchive@OSU

Juvenile coho salmon movement, growth and survival in a coastal basin of southern Oregon

Pore-scale displacement mechanisms as a source of hysteresis for two-phase flow in porous media

The dynamic pipeline: hydraulic capacitance and xylem hydraulic safety in four tall conifer species

Natural-Channel-Design Restorations that Changed Geomorphology Have Little Effect on Macroinvertebrate Communities in Headwater Streams

Carbon stocks and accumulation rates in Pacific Northwest forests: role of stand age, plant community, and productivity

On the reproductive success of early-generation hatchery fish in the wild

Empirical algorithms to estimate water column pH in the Southern Ocean

Host species composition influences infection severity among amphibians in the absence of spillover transmission

Phenology of particle size distributions and primary productivity in the North Pacific subtropical gyre (Station ALOHA)

Particle distributions and dynamics in the euphotic zone of the North Pacific Subtropical Gyre

Limit your search

Academic Affiliation

Advisor

Conference Name

Conference Section/Track

Creator

Contributor

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Funding Body

Language

License

Location

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search