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801 - 825 of 1229 Items << < 28 29 30 31 32 33 34 35 36 37 > >>
801 - 825 of 1229 Items << < 28 29 30 31 32 33 34 35 36 37 > >>
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Astragalus oniciformis Barneby is a narrow endemic xerophyte of the upper Snake River Plain of central Idaho, USA, where it
inhabits stabilized, aeolian sand deposits and previously burned, sandy sites over Quaternary basalt flows. The objective...
2004-12 (iso8601)
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Reinterpretation of the leafhopper tribe Scaphytopiini reveals it
to be primarily a New World taxon with only limited representation in
the Palearctic, Oriental and possibly Ethiopian regions. Approximately
75 species assigned to three genera are...
1974-05-06 (iso8601)
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The littoral zones of seven reservoirs in the southern Willamette Valley of Oregon
were sampled with a boat electroshocker during the summer months of 1995 and 1996.
Shoreline substrates were inventoried before sampling sites were randomly...
2002-04-19 (iso8601)
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The Rio Grande originates in the southern Colorado Rocky Mountains, flows through New Mexico, and forms the border between the U.S. and Mexico on its way to the Gulf of Mexico. Serving over one-million acres of irrigated land and the municipal and...
2007-11-28
2007-11-28 2001-02-01 |
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The Rio Grande originates in the southern Colorado Rocky Mountains, flows through New Mexico, and forms the border between the U.S. and Mexico on its way to the Gulf of Mexico. Serving over one-million acres of irrigated land and the municipal and...
2007-11-28
2007-11-28 2001-02-01 |
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Oregon English sole catch data from 0 to 80 fathoms between Coos
Bay and Cape Lookout were examined for the years 1973, 1975, and 1976.
English sole is a major target species of this inshore trawl fishery.
Comparison of depths of maximal values of...
1980-02-20 (iso8601)
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Between the years of 2006 and 2011, 183 marine mammal strandings were recorded and analyzed by the Veterinary Diagnostics Laboratory at Oregon State University. Most of the strandings were of pinnipeds and porpoises. The species represented...
2012-05-30 (iso8601)
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Despite knowledge that concerted evolution of high-copy loci is often imperfect,
studies that investigate the extent of intragenomic polymorphisms and comparisons
across a large number of species are rarely made. We present a bioinformatic...
2015-01-06 (iso8601)
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Knowledge of Drosophila suzukii's preference for an attractive trap design and bait can be
used to improve detection and management of this new invasive fruit pest. Desired trap and
bait attributes include: high D. suzukii capture and species...
2014-09-05 (iso8601)
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Shallow, rapid soil mass movements are common events and primary sources
of sediment in steep terrain of the Pacific Northwest.
Poorly vegetated debris deposits and scars resulting from landslides
remove land from the productive timber base, and...
1983-03-17 (iso8601)
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Volcanism is a major agent of natural disturbance in the Pacific Northwest and other regions of the world. Volcanic eruptions alter surrounding landscapes and ecosystems and strongly influence the distribution and abundance of species. Although...
2005-01-01
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Evaluation of previously established
field trials of remedial internal treatments
demonstrates the continued performance of
chioropicrin, Vorlex, and
methylisothiocyanate (MITC). While the
degree of protection afforded by these
treatments has...
1992 (iso8601)
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Ecological niche models can be a useful tool to identify candidate reintroduction sites for endangered
species but have been infrequently used for this purpose. In this paper, we (1) develop activity-specific
ecological niche models (nesting,...
2015-04 (iso8601)
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Debris flows, common disturbances in many mountainous areas, initially scour or bury stream habitats; however, debris flows deliver vast amounts of wood, boulders, and gravel that may ultimately form complex stream habitat to potentially support a...
2013-02-18 (iso8601)
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The Arc Marine data model is a generalized template to guide the
implementation of geographic information systems (GIS) projects in the
marine environment. Arc Marine developed out of a collaborative process
involving research and industry...
2007-11-07 (iso8601)
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Lithothamnion rnuelleri is reported for the first time as one of the main components of rhodolith beds along the Eastern Pacific Ocean based on samples from Washington State (USA), Pacific Baja California (Mexico), southern Nicaragua, and Costa...
2013-03 (iso8601)
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Research and
field notes, manuscripts, correspondence, and other papers of David Manuwal, a
Professor of Wildlife Science at the University of Washington,
Seattle; David Manuwal was a Professor of Wildlife Science in the College of...
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This paper reviews some of the distributional features of vertically migrating micronekton
off Oregon; describes a new, conducting-cable, midwater-trawl system using an eight-net,
opening-closing cod-end unit; and gives some preliminary results on...
1970 (iso8601)
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Pacific lamprey Entosphenus tridentatus is a valuable icon and traditional food source for Indigenous people of western North America. Native Americans have utilized traditional ecological knowledge (TEK) since time immemorial to guide their ways...
2014-12-12 (iso8601)
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Dislodged macroalgae and seagrasses, also known as marine wrack, frequently
wash into coastal ecosystems from the ocean and are potentially important ecological
resources for biological communities. These!nutrient and organic matter subsidies may...
2014-09-19 (iso8601)
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Grazing on the mountainous forested ranges of the Camp Creek
Unit, Malhuer National Forest, was typified by irregular distribution
of free-ranging cattle. A combination of management and physical,
topographic constraints caused cattle to...
1979-08-24 (iso8601)
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Associations between occupancy patterns of a montane anuran species, Rana cascadae, and habitat structure at multiple scales were examined to investigate how population structure may influence persistence in spatially and temporally heterogeneous...
1997-01-30 (iso8601)
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The lower Columbia River (LCR) riparian zone is rich in habitat diversity. However, the natural beauty and species diversity along the river have increasingly become affected by human activity. This study quantifies the areal extent and degree of...
1999-05-07 (iso8601)
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A topic of recurring interest in ecological research is the degree to which
vegetation structure influences the distribution and abundance of species. Here we test the
applicability of remote sensing, particularly novel use of waveform lidar...
2010-06 (iso8601)
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