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ScholarsArchive at Oregon State University
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Climate change is expected to change the distribution of species. For long-lived, sessile
species such as trees, tracking the warming climate depends on seedling colonization of
newly favorable areas. We compare the distribution of seedlings and...
2015-01-29 (iso8601)
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The concept of ecosystem services broadens perspectives on nature to include
not only intrinsic value but also the utilitarian value it provides to society. Viewing
nature through this lens informs our understanding of how particular ecological...
2014-11-26 (iso8601)
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Observations show abrupt changes in the oceanic circulation of the southwestern Atlantic. These
studies report a southward drift of the Brazil/Malvinas Confluence (BMC) and a change in the spectral
characteristics of the Malvinas Current (MC)...
2014-12-28 (iso8601)
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Recognizing the importance of methane hydrate
research and the need for a coordinated effort, the United States
Congress enacted the Methane Hydrate Research and Development
Act of 2000. At the same time, the Ministry of International
Trade and...
2015-02-12 (iso8601)
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The atmospheric flux of methane from the oceans is largely mitigated through microbially
mediated sulphate-coupled methane oxidation, resulting in the precipitation of authigenic
carbonates. Deep-sea carbonates are common around active and...
2014-10-14 (iso8601)
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In addition to well established properties that control the presence or absence of the hydrate stability
zone, such as pressure, temperature, and salinity, additional parameters appear to influence the concentration
of gas hydrate in host...
2014-12 (iso8601)
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Ocean fronts represent productive regions of the ocean, but predator-prey interactions within these features are
poorly understood partially due to the coarse-scale and biases of net-based sampling methods. We used the In
Situ Ichthyoplankton...
2015-02 (iso8601)
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A floristic study of marine macrophytic algae and Cyanobacteria in the splash and intertidal zones at Luhuitou reef, Sanya
Bay, Hainan Island, China, was conducted during the rainy and dry seasons of 2008-2012 utilizing 148 of the most common...
2014-08 (iso8601)
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In the past 100 years since the birth of fisheries oceanography, research
on the early life history of fishes, particularly the larval stage, has been extensive, and
much progress has been made in identifying the mechanisms by which factors such...
2014-12 (iso8601)
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Fisheries oceanography is the study of ecological relationships between
fishes and the dynamics of their marine environments and aims to characterize the
physical, chemical, and biological factors that affect the recruitment and abundance
of...
2014-12 (iso8601)
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Reproductive success is one of the most easily-measured and widely studied demographic parameters of
colonial nesting seabirds. Nevertheless, factors affecting the sequential stages (egg laying, incubation, chick-rearing)
of reproductive success...
2014-11 (iso8601)
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Humpback whales (Megaptera novaeangliae), a mysticete with a cosmopolitan distribution, demonstrate
marked behavioural plasticity. Recent studies show evidence of social learning in the transmission of specific
population level traits ranging from...
2014-12-16 (iso8601)
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Translocation experiments, in which researchers displace animals and then
monitor their movements to return home, are commonly used as tools to assess functional
connectivity of fragmented landscapes. Such experiments are purported to have...
2014-12 (iso8601)
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Wildlife habitat mapping has evolved at a rapid pace over the last few decades. Beginning with simple, often subjective,
hand-drawn maps, habitat mapping now involves complex species distribution models (SDMs) using
mapped predictor variables...
2015-01 (iso8601)
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1. The evaluation of the age and growth of animal populations is essential for understanding and
predicting how populations will respond to changes in environmental conditions and anthropogenic
stressors.
2. We used a novel, von Bertalanffy...
2015-02 (iso8601)
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Tropical peatlands cover an estimated 440,000 km² (~10% of global peatland area) and are significant in the global
carbon cycle by storing about 40–90 Gt C in peat. Over the past several decades, tropical peatlands have experienced
high rates of...
2015-01 (iso8601)
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We investigated colony size, productivity, and limiting factors for five piscivorous waterbird species nesting at 18 locations
on the Columbia Plateau (Washington) during 2004–2010 with emphasis on species with a history of salmonid
(Oncorhynchus...
2014-11 (iso8601)
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Paralytic shellfish poisoning (PSP)
is an acute toxic illness in humans resulting
from ingestion of shellfish contaminated with a
suite of neurotoxins (saxitoxins) produced by
marine dinoflagellates, most commonly in the
genus Alexandrium....
2014-10 (iso8601)
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Mining impacts on stream systems have historically been studied over small spatial scales, yet
investigations over large areas may be useful for characterizing mining as a regional source of stress to
stream fishes. The associations between...
2015-03 (iso8601)
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Stressful environmental conditions affect the adrenocortical function of developing animals, which can have consequences
for their fitness. Discovery of the avian stress hormone corticosterone (CORT) in feathers has the potential to broaden the...
2015-01 (iso8601)
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We studied habitat selection by northern spotted owls (Strix occidentalis caurina) during natal
dispersal in Washington State, USA, at both the roost site and landscape scales. We used logistic regression
to obtain parameters for an exponential...
2015-02 (iso8601)
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Linked atmospheric and wildfire changes will complicate future management of native coldwater fishes in fire-prone
landscapes, and new approaches to management that incorporate uncertainty are needed to address this challenge. We used a
Bayesian...
2015-02 (iso8601)
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Mercury (Hg) is a globally distributed environmental
contaminant with a variety of deleterious effects
in fish, wildlife, and humans. Breeding songbirds may be
useful sentinels for Hg across diverse habitats because they
can be effectively...
2015-03 (iso8601)
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To investigate the extent and causes of recent quaking aspen (Populus
tremuloides) recruitment in northern Yellowstone National Park, we measured browsing
intensity and height of young aspen in 87 randomly selected aspen stands in 2012, and...
2015-01 (iso8601)
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Directly wind-coherent near-inertial surface currents off the Oregon coast are investigated with a
statistical parameterization of observations and outputs of a regional numerical ocean model and three one-dimensional
analytical models including...
2014-10 (iso8601)
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