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ScholarsArchive at Oregon State University
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Describing the ocean habitats used by Chinook salmon Oncorhynchus tshawytscha is an important step towards understanding how environmental conditions influence their population dynamics. We used data from archival tags that recorded time,...
2005-01-19 (iso8601)
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The food habits of the 2 dominant larval pleuronectids off the Oregon coast - English sole Parophrys vetulus and butter sole Isopsetta isolepis - were analysed. Most specimens were collected during January-April 1971 and March-April 1973. As is...
1984-11-08 (iso8601)
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The Yaquina Bay Ocean Observing Initiative (YBOOI) is a regional initiative to establish Newport, Oregon as a
hub for marine research, monitoring, and education in the Pacific Northwest. A strategy retreat was held on
July 15, 2011 to engage a...
2012-02-17 (iso8601)
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This report outlines the current evacuation plan for Oregon State University's Hatfield Marine Science Center and makes recommendations for enhancements and changes. The physical setting is described along with detail on evacuation strategies....
2011-12-12 (iso8601)
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As colony-specific wintering ecology of small and medium-sized seabirds is poorly understood, it has been generally assumed that winter conditions have the same effect on all individuals from any given colony. However, advances in global...
2011-12-05 (iso8601)
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The seismicity of the North Atlantic was monitored from May 2002 to September 2003 by the ‘SIRENA array’ of autonomous hydrophones. The hydroacoustic signals provide a unique data set documenting numerous low-magnitude earthquakes along the...
2012-02-24 (iso8601)
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Between 1999 and 2009, autonomous hydrophones were deployed to monitor seismic activity from 16° N to 50° N along the Mid-Atlantic Ridge. These data were examined for airgun sounds produced during offshore surveys for oil and gas deposits, as well...
2012-02 (iso8601)
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Blooms of jellyfish around the world have been correlated with climatic variables related to environmental causes. Sizeable populations of large medusae, primarily Chrysaora fuscescens and Aequorea sp., appear annually in shelf waters of the...
2012-07 (iso8601)
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The Northwest Lau Backarc Basin, consisting of the Northwest Lau Spreading Center (NWLSC) and the Rochambeau Rifts (RR), is unique in having elevated ³He/⁴He ratios (up to 28 R[subscript a]) in the erupted lavas, clearly indicating a hot spot or...
2012-05-31 (iso8601)
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In most areas, estimating the presence and distribution of cryptic marine mammal species, such as beaked whales, is
extremely difficult using traditional observational techniques such as ship-based visual line transect surveys. Because
acoustic...
2012-05-18 (iso8601)
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The introduced Asian parasitic bopyrid isopod, Orthione griffenis, was first discovered on the Pacific coast of North America in Washington in 1988 and next in California in 1992. The range of Orthione presently extends from British Columbia to...
2012-06 (iso8601)
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Upwelling in eastern boundary current systems is a primary driver of ecosystem productivity. Typically, peak upwelling occurs during spring and summer, but winter upwelling may also be important to ecosystem functions. In this study, we...
2012-08 (iso8601)
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Volcanic eruptions are important events in Earth’s cycle of magma
generation and crustal construction. Over durations of hours to years, eruptions
produce new deposits of lava and/or fragmentary ejecta, transfer heat and magmatic
volatiles from...
2012 (iso8601)
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Estimating the abundance of long-lived, migratory animals is challenging but essential
for managing populations. We provide the first abundance estimates of endangered humpback
whales Megaptera novaeangliae from their breeding grounds in Oceania,...
2012-05-07 (iso8601)
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In 2006–2007, an unusually high number of harbor porpoises (Phocoena phocoena) stranded along the Washington and Oregon coastlines. Spatiotemporal analyses were used to examine their ability to detect clusters of porpoise strandings during an...
2012-07 (iso8601)
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Climatic effects in the ocean at the community level are poorly described, yet accurate predictions about ecosystem responses to changing environmental conditions rely on understanding biotic responses in a food-web context to support knowledge...
2012-08 (iso8601)
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Satellite imagery of chlorophyll a concentration (chl a) provides the only holistic perspective
of productivity in marine ecosystems worldwide, yet its utility for understanding and
predicting the distribution of upper trophic-level predators...
2012-04-11 (iso8601)
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Euphausiid krill play a critical role in coastal and oceanic food webs, linking primary producers to upper trophic levels. In addition, some species support commercial fisheries worldwide. Despite their ecological importance, the genetics of these...
2012-09 (iso8601)
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Fisheries nationwide are facing major challenges that require collection of real time (RT) and
near real time (NRT) information. High-resolution RT and NRT data are critical for addressing a
variety of fishery needs including quota accounting,...
2012-06 (iso8601)
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Axial Seamount is an active submarine volcano located at the intersection between the Cobb hotspot and the Juan de Fuca spreading centre in the northeast Pacific Ocean1, 2. The volcano has been closely monitored since it erupted in 1998 (refs 3,...
2012-07 (iso8601)
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At sites with frequent submarine volcanic activity, it is difficult to discern between new and pre-existing lava flows. In particular, the distribution of the fissures from which lava erupts, the routes taken by lava flows and the relationship...
2012-07 (iso8601)
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Volcanoes at spreading centres on land often exhibit seismicity and ground inflation months to years before an eruption, caused by a gradual influx of magma to the source reservoir¹⁻⁴. Deflation and seismicity can occur on time scales of hours to...
2012-07 (iso8601)
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The City of Newport (City) plans to develop a tsunami evacuation site to serve the
South Beach area. The proposed site consists of an undeveloped hill located
adjacent to Highway 101, southwest of the Yaquina Bay Bridge (Figure 1A,
Appendix A)....
2012-01-09 (iso8601)
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