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ScholarsArchive at Oregon State University
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Marine prey often occur in hierarchical mosaics whereby small, high-density patches
are nested inside of larger, lower density aggregations. We tested the extent to which the foraging
behavior of a marine predator (northern fur seal Callorhinus...
2013-04-08 (iso8601)
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We present a new hypothesis to explain the millennial-scale temperature variability recorded in ice cores known as Dansgaard-Oeschger (DO) cycles. We propose that an ice shelf acted in concert with sea ice to set the slow and fast timescales of...
2013-03-05 (iso8601)
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In this technical note, a steady-state analytical solution of concentrations of a parent solute reacting to a daughter solute, both of which are undergoing transport and multirate mass transfer, is presented. Although the governing equations are...
2013-01 (iso8601)
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Large ignimbrite flare-ups provide records of profound crustal modification during batholith formation at depth. The locations of source calderas and volumes and ages of the eruptions must be determined to develop models for the tectonomagmatic...
2013-01-31 (iso8601)
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We investigated the export of particulate organic matter (POM) to the ocean by two contrasting small, mountainous rivers, the Umpqua and Eel Rivers, by collecting suspended sediment samples over a range of discharges and analyzing them for a...
2013-02-06 (iso8601)
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Population growth is affected by several factors such as climate, species interaction
and harvesting pressure. However, additional complexity can arise if fishing increases the sensitivity
to environmental variability. To predict the effects of...
2013-04-22 (iso8601)
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Prediction of year-class strength is a critical challenge for fisheries managers. Theoretically,
predictions of recruitment should be better when they are based on estimates of cohort
size taken close to the age of recruitment and may improve if...
2013-04-22 (iso8601)
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In marine populations, spatial structure arises over a wide range of scales and forms
hierarchical aggregations. Changing spatial structure can alter the demographic and life history
trait variation within populations and subject individuals to...
2013-04-22 (iso8601)
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We present a survey of Nd isotopes measured from authigenic phases on surface sediments from the Arctic Ocean seafloor. Comparison with published dissolved water column Nd isotope distributions suggests that epsilon Nd from sediment leachates...
2013-03-04 (iso8601)
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Considerable effort is presently being devoted to producing high-resolution sea surface temperature (SST) analyses with a goal of spatial grid resolutions as low as 1 km. Because grid resolution is not the same as feature resolution, a method is...
2013-04 (iso8601)
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Disease, overharvesting, and pollution have impaired the role of bivalves on
coastal ecosystems, some to the point of functional extinction. An underappreciated function
of many bivalves in these systems is shell formation. The ecological...
2013-04 (iso8601)
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Tropical dry forests are the most threatened forest type in the world yet a paucity of research about them stymies development of appropriate
conservation actions. The Paran~a River Basin has the most significant dry forest formations in the...
2013-05 (iso8601)
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Are equilibrium climate sensitivity and the associated radiative feedbacks a constant property of the climate system, or do they change with forcing magnitude and base climate? Using the radiative kernel technique, feedbacks and climate...
2013-05 (iso8601)
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Turbidite deposition along slope and trench settings is evaluated for the Cascadia and Sumatra-Andaman subduction zones. Source proximity, basin effects, turbidity current flow path, temporal and spatial earthquake rupture, hydrodynamics, and...
2013-04-04 (iso8601)
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Rain falling at or near low tide is capable of eroding and transporting cohesive sediment from intertidal areas. Given that metals adsorb strongly to silt- and clay-sized particles, it is conceivable that low-tide rainfall may also liberate...
2013-02-16 (iso8601)
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Dormancy is a key life history trait of planktonic calanoid copepods in the genus
Calanus. Empirical evidence suggests that duration of dormancy is controlled by
ambient temperature driving lipid metabolism in individuals. Here, we use the...
2013-03-26 (iso8601)
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Concentrations of domoic acid (DA) above the regulatory limit in Washington coast razor clams are usually higher on northern beaches from summer to fall. Recent field studies have confirmed that the primary source of toxic Pseudo-nitzschia (PN)...
2013-05 (iso8601)
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The relative contributions of sea level rise (SLR) and increasing extra-tropical
storminess to the frequency with which waves attack coastal features is assessed with a simple
total water level (TWL) model. For the coast of the U.S. Pacific...
2013-03 (iso8601)
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The Water, Sanitation and Hygiene (WASH) sector of international development works to increase access to sustainable, safe water and improved sanitation. Currently, at least 780 million people live without clean drinking water and 2.5 billion...
2013-06-05 (iso8601)
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Mud volcanoes (MVs) are considered as important methane (CH₄) sources for the
atmosphere; gas is not only released from macroseepage, i.e., from craters and visible gas bubbling
manifestations, but also from invisible and pervasive exhalation from...
2013-03-25 (iso8601)
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We integrate micropaleontological and geochemical records (benthic stable isotopes,
neodymium isotopes, benthic foraminiferal abundances and XRF-scanner derived elemental
data) from well-dated Pacific Ocean successions (15-12.7 Ma) to monitor...
2013-03-01 (iso8601)
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Time-depe ndencies of suspended-sediment discharge from six coastal watersheds of northern Califor nia
– Smith River, Klamath River, Trinity River, Redwood Creek, Mad River, and Eel River –were evaluated
using monitoring data from 1955 to 2010....
2013-03-07 (iso8601)
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Smart growth strategies of infill and compact growth in existing suburban cities will most likely not be
sufficient to absorb a new US household growth in the future. To meet housing demands and preferences,
master-planned communities will...
2013-03-26 (iso8601)
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Flow and temperature are strongly linked environmental factors driving ecosystem processes in streams. Stream temperature maxima (T [subscript max_w]) and stream flow minima (Q[subscript min]) can create periods of stress for aquatic organisms. In...
2012-09-21 (iso8601)
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