Index Catalog // ScholarsArchive@OSU

Morning-to-Afternoon Evolution of Marine Stratus Polluted by Underlying Ships: Implications for the Relative Lifetimes of Polluted and Unpolluted Clouds

Creator:: Christensen, Matthew W., Coakley, James A., Jr., and Tahnk, William R.
Abstract:: Ship tracks appearing in both the morning and afternoon Moderate Resolution Imaging Spectroradiometer (MODIS) imagery for the Pacific Ocean off the west coast of the United States were used to study the morning-to-afternoon evolution of marine stratus polluted by underlying ships and nearby uncontaminated stratus. Analyzed 925-hPa winds were used...
Resource Type:: Article
Full Text:: Clouds MATTHEW W. CHRISTENSEN, JAMES A. COAKLEY JR., AND WILLIAM R. TAHNK College of Oceanic and

Analysis of habitat features and abundance of young-of-the-year fishes off of the central Oregon coast

Creator:: Haven, Katlyn, Wakefield, W. Waldo, Brodeur, Richard, and Yergey, Matthew
Abstract:: Over the last several years, the Northwest Fisheries Science Center, in collaboration with the Pacific States Marine Fisheries Commission and Oregon State University, has been sampling young-of-the-year groundfishes and other small demersal fishes along the Newport Hydrographic (NH) line. An important question concerning these surveys is whether the NH line...
Resource Type:: Poster
Full Text:: Miss Yvonne. Katlyn Havena*, W. Waldo Wakefieldb, Richard Brodeurc, and Matthew Yergeyd aOregon

The divergent effect of capture depth and associated barotrauma on post-recompression survival of canary (Sebastes pinniger) and yelloweye rockfish (S. ruberrimus)

Creator:: Hannah, Robert W., Rankin, Polly S., and Blume, Matthew T. O.
Abstract:: We evaluated the external signs of barotrauma and 48-h post-recompression survival for 17 54 canary and 81 yelloweye rockfish captured at depths of 46-174 m, much deeper than a 18 similar prior experiment, but within the depth range of recreational fishery catch and 19 discard. Survival was measured using specialized...
Resource Type:: Article
Full Text:: (S. ruberrimus) 2 3 Robert W. Hannah*, Polly S. Rankin, Matthew T.O. Blume 4 5 Oregon

Effect of Particle Shape on Stress-Dilatancy Responses of Medium-Dense Sands

Creator:: Xiao, Yang, Long, Leihang, Evans, T. Matthew, Zhou, Hai, Liu, Hanlong, and Stuedlein, Armin W.
Abstract:: The effect of particle shape on the strength, dilatancy, and stress-dilatancy relationship was systematically investigated through a series of drained triaxial compression tests on sands mixed with angular and rounded glass beads of different proportions (0%, 25%, 50%, 75%, and 100%). A distinct overall regularity parameter was used to define...
Resource Type:: Article
Full Text:: . Matthew Evans, Ph.D., A.M.ASCE3; Hai Zhou4; Hanlong Liu, Ph.D.5; and Armin W. Stuedlein, Ph.D., P.E

Wild bee diversity is enhanced by experimental removal of timber harvest residue within intensively managed conifer forest

Creator:: Rivers, James W., Mathis, Codey L., Moldenke, Andrew R., and Betts, Matthew G.
Abstract:: The use of timber harvest residue as an energy source is thought to have environmental benefits relative to food-based crops, yet the ecological impact of this practice remains largely unknown. We assessed whether the abundance and diversity of wild bees (Apoidea) were influenced by the removal of harvest residue and...
Resource Type:: Article
Full Text:: forest James W. Rivers1 | Codey L. Mathis1 | Andrew R. Moldenke2 | Matthew G. Betts3 1Department of

Distribution and abundance of juvenile demersal fishes in relation to summer hypoxia and other environmental variables in coastal Oregon, USA

Creator:: Sobocinski, Kathryn L., Ciannelli, Lorenzo, Wakefield, W. Waldo, Yergey, Matthew E., and Johnson-Colegrove, Angela
Abstract:: The juvenile demersal fish assemblage along the Pacific Northwest coast has received little attention relative to adult life history stages since pioneering work in the 1970s. Increasing severity of hypoxia along the Oregon coast in recent years has prompted investigations into the response of biota in this region. We used...
Resource Type:: Article

Delayed effects of capture-induced barotrauma on physical conditionand behavioral competency of recompressed yelloweye rockfish, Sebastes ruberrimus

Creator:: Rankin, Polly S., Hannah, Robert W., Blume, Matthew T. O., Miller-Morgan, Timothy J., and Heidel, Jerry R.
Abstract:: Rebuilding of some U.S. West Coast rockfish (Sebastes spp.) stocks relies heavily on mandatory fishery discard, however the long-term condition of discarded fish experiencing capture-related barotrauma is unknown. We conducted two studies designed to evaluate delayed mortality, physical condition,and behavioral competency of yelloweye rockfish, Sebastes ruberrimus, experiencing barotrauma during capture...
Resource Type:: Article

Leaf processing behaviour in Atta leafcutter ants: 90% of leaf cutting takes place inside the nest, and ants select pieces that require less cutting

Creator:: Garrett, Ryan W., Carlson, Katherine A., Goggans, Matthew Scott, Nesson, Michael H., Shepard, Christopher A., and Schofield, Robert M. S.
Abstract:: Leafcutter ants cut trimmings from plants, carry them to their underground nests and cut them into smaller pieces before inoculating them with a fungus that serves as a primary food source for the colony. Cutting is energetically costly, so the amount of cutting is important in understanding foraging energetics. Estimates...
Resource Type:: Article
Full Text:: cutting RyanW. Garrett1, Katherine A. Carlson1, Matthew Scott Goggans1, Michael H. Nesson2, Christopher A

Experimental evidence that simplified forest structure interacts with snow cover to influence functional connectivity for Pacific martens

Creator:: Moriarty, Katie M., Epps, Clinton W., Betts, Matthew G., Hance, Dalton J., Bailey, J. D., and Zielinski, William J.
Abstract:: Context: Functional connectivity—the facilitation of individual movements among habitat patches—is essential for species’ persistence in fragmented landscapes. Evaluating functional connectivity is critical for predicting range shifts, developing conservation plans, and anticipating effects of disturbance, especially for species affected by climate change. Objectives: We examined whether simplifying forest structure influenced animal...
Resource Type:: Article

Mulching woody ornamentals with organic materials

Creator:: Bell, Neil (Neil Charles), 1961-, Sullivan, Dan M. (Dan Matthew), 1954-, Cook, Thomas W., and Oregon State University. Extension Service
Abstract:: A wide variety of materials are sold as mulches and used in landscapes. This publication discusses mulching woody ornamentals (trees and shrubs) with organic materials. It covers the reasons for mulching, how to apply mulch, and how to maintain its beneficial effects over time. The information is presented in a...
Resource Type:: Technical Report

ScholarsArchive@OSU

Morning-to-Afternoon Evolution of Marine Stratus Polluted by Underlying Ships: Implications for the Relative Lifetimes of Polluted and Unpolluted Clouds

Analysis of habitat features and abundance of young-of-the-year fishes off of the central Oregon coast

The divergent effect of capture depth and associated barotrauma on post-recompression survival of canary (Sebastes pinniger) and yelloweye rockfish (S. ruberrimus)

Effect of Particle Shape on Stress-Dilatancy Responses of Medium-Dense Sands

Wild bee diversity is enhanced by experimental removal of timber harvest residue within intensively managed conifer forest

Distribution and abundance of juvenile demersal fishes in relation to summer hypoxia and other environmental variables in coastal Oregon, USA

Delayed effects of capture-induced barotrauma on physical conditionand behavioral competency of recompressed yelloweye rockfish, Sebastes ruberrimus

Leaf processing behaviour in Atta leafcutter ants: 90% of leaf cutting takes place inside the nest, and ants select pieces that require less cutting

Experimental evidence that simplified forest structure interacts with snow cover to influence functional connectivity for Pacific martens

Mulching woody ornamentals with organic materials

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