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ScholarsArchive at Oregon State University
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We examined recordings from a 15-month (May 2009–July 2010) continuous acoustic data set collected from a bottom-mounted passive acoustic recorder at a sample frequency of 6kHz off Portland, Victoria, Australia (38°33′01″S, 141°15′13″E) off...
2015-06 (iso8601)
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Across animal taxa, migration allows individuals to exploit habitats and
resources that predictably vary seasonally in suitability. Theory predicts that the ‘‘decision’’ to
migrate or not is shaped by the relative fitness costs and benefits of...
2015-07 (iso8601)
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1. Despite their importance in determining the rate of both energy gain and expenditure, how
the fine-scale kinematics of foraging are modified in response to changes in prey abundance
and distribution remain poorly understood in many animal...
2015-07 (iso8601)
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In 2006, a marked increase in harbor porpoise Phocoena phocoena strandings were reported in the Pacific Northwest of the USA, resulting in the declaration of an unusual mortality event (UME) for Washington and Oregon to facilitate investigation...
2015-07-23 (iso8601)
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Following breeding, sooty shearwaters Puffinus griseus leave New Zealand waters
and migrate to 1 of 3 distinct areas in the North Pacific Ocean, effectively exploiting environmental
resources across a large proportion of this northern ocean basin....
2015-02-17 (iso8601)
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There is a lack of consensus regarding the roles of sulfide saturation versus volatile degassing on the partitioning of Cu and Ag during differentiation and eruption of convergent margin magmas. Because of their oxidized character, volatile-rich...
2015-05 (iso8601)
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Macroinvertebrates are important for processing leaf detritus in temperate streams, but studies about their role in tropical streams often present conflicting results. Via digestive tract analyses, we assessed the diets of Phylloicus sp. larvae...
2015 (iso8601)
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Increasingly, natural resource management agencies and nongovernmental organizations are sharing monitoring data across geographic and jurisdictional boundaries. Doing so improves their abilities to assess local-, regional-, and landscape-level...
2015-05 (iso8601)
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We used radiotelemetry to study space use and habitat selection of 16 Northern Spotted Owls (Strix occidentalis caurina) on the eastern slope of the Cascade Mountains, Washington, U.S.A., in 1989–1990. We used a geographical information system...
2015-06 (iso8601)
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Desert springs are sensitive aquatic ecosystems that pose unique challenges to natural resource managers and researchers. Among the most important of these is the need to accurately quantify population parameters for resident fish, particularly...
2015 (iso8601)
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Understanding seasonal migration and localized persistence of populations is critical for effective species harvest and conservation management. Pacific salmon (genus Oncorhynchus) forecasting models predict stock composition, abundance, and...
2015-07-22 (iso8601)
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A number of researchers have attempted to estimate salmonid smolt survival during outmigration through an estuary. However, it is currently unclear how the design of such studies influences the accuracy and precision of survival estimates. In this...
2015-07-21 (iso8601)
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Land use and climate change occur simultaneously around the globe. Fully understanding their separate and combined effects requires a mechanistic understanding at the local scale where their effects are ultimately realized. Here we applied an...
2015-08-21 (iso8601)
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Species identification is essential to biology, conservation, and management. The ability to focus on specific diagnostic characteristics of a species helps improve the speed and accuracy of identification. Birds are excellent subjects for...
2015-08 (iso8601)
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Bird communities are influenced by local and regional processes. The degree to which communities are dynamic has implications for projecting responses in community composition as birds track geographic shifts of their habitats. Historic datasets...
2015-08-04 (iso8601)
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Salmon and other anadromous fish are consumed by vertebrates with distinct
life history strategies to capitalize on this ephemeral pulse of resource availability.
Depending on the timing of salmon arrival, this resource may be in surplus to
the...
2015-08-04 (iso8601)
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Greater sage-grouse (Centrocercus urophasianus; sage-grouse) are highly susceptible to infection with West Nile virus (WNV), with substantial mortality reported in wild populations and in experimentally infected birds. Although sage-grouse are...
2014-12 (iso8601)
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The distribution and range of lesser prairie-chicken (Tympanuchus pallidicinctus) has been reduced by >90% since European settlement of the Great Plains of North America. Currently, lesser prairie-chickens occupy 3 general vegetation communities:...
2013-12 (iso8601)
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Conservation investment in management of at-risk species can be less costly than a delay-and-repair approach implemented after species receive legal protection. The United States Endangered Species Act candidate species designation represents an...
2013-11 (iso8601)
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The distribution and geographic range of Greater Sage-Grouse (Centrocercus urophasianus) have been reduced by 56% since European settlement. Although loss and fragmentation of sagebrush (Artemisia spp.) habitats have been cited as the primary...
2011 (iso8601)
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