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1126 - 1150 of 1229 Items << < 41 42 43 44 45 46 47 48 49 50 > >>
1126 - 1150 of 1229 Items << < 41 42 43 44 45 46 47 48 49 50 > >>
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Understanding controls over the distribution of soil bacteria is a fundamental step toward describing soil ecosystems, understanding their functional capabilities, and predicting their responses to environmental change. This study investigated the...
2013-06-18 (iso8601)
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This fifth annual Cooperative Pole Research Program report
outlines our progress in the six project objectives.
Improved Fumigants
Sampling of previously established field tests revealed that
Vorlex and Chloropicrin continued to perform well after...
1985-08 (iso8601)
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This paper analyzes the effects of spatial closures on the multi-species
groundfish trawl fishery in northern and central California. The analysis
differentiates between changes in total effort and in the spatial distribution
of effort before and...
2010 (iso8601)
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Marine protected areas (MPAs) are increasingly being used as a conservation tool for highly mobile marine vertebrates and the focus is typically on protecting breeding areas where individuals are aggregated seasonally. Yet movements during the...
2013-02-14 (iso8601)
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Marine provinces, founded on contrasting floras or faunas, have been recognized for more than 150 years but were not consistently defined by endemism until 1974. At that time, provinces were based on at least a 10% endemism and nested within...
2012-01 (iso8601)
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The Oregon continental shelf waters are typically characterized by four to five major upwelling events that occur between May and October. The upwelled water is rich in nutrients, which fuels an increase in phytoplankton biomass. The onset of El...
2000-08-24 (iso8601)
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The collection consists of materials kept by William Hurst and provides an in-depth look at his career in the Forest Service, where he worked in the Wasatch National Forest and Ashley National Forest before serving as the Regional Forester for the...
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Research was undertaken to examine the influence of light intensity on the shoaling behavior, activity and anti-predator behavior of juvenile walleye pollock Theragra chalcogramma. Under a 12 h light/12 h dark photoperiod, juveniles displayed a...
1998-06-18 (iso8601)
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Chlorinated hydrocarbon residues (DDT metabolites, dieldrin, and PCB's) were found in fish flesh samples and sediment in American Falls Reservoir. The concentration and type of chlorinated hydrocarbon varied with fish species and age. The mean...
1976-01-01
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In many regions of the world, the extremes of winter cold are a major determinant of the geographic distribution of perennial plant species and of their successful cultivation. In the United States, the U.S. Department of Agriculture (USDA) Plant...
2012-02 (iso8601)
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We previously developed a spatially explicit, individual-based model (IBM) evaluating the bio-economic efficiency of fishing vessel movements between regions according to the catching and targeting of different species based on the most recent...
2012 (iso8601)
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Invasive plant species are expanding and transforming vegetative communities across Oregon and throughout the United States. Over the past three decades remote sensing, geographic information system (GIS), and Global Positioning System (GPS)...
2011-06-09 (iso8601)
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ill., maps; Report title; Includes appendices: Crater Lake Liminological Studies 1984 and 1985; Includes bibliographical references; "Robert E. Benton, Superintendent Crater Lake National Park." - T.p.
1986-09-20
2008-08-19 2008-11-26 |
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Bumble bees (Hymenoptera: Apidae) are important native pollinators in wild
and agricultural systems, and are one of the few groups of native bees commercially
bred for use in the pollination of a range of crops. In recent years, declines in...
2014-03-26 (iso8601)
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In wood-based composites, the glue-line (interface) between wood-strands affects the stress transfer from one member to the next. The glue-line properties determine the rate of load transfer between phases and these properties depend on wood...
2010-05-14 (iso8601)
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Llamas (Lama glama) appear to have predisposing anatomical features for developing
otitis media such as a long and narrow external acoustic meatus and a trabecular
tympanic bulla. However, there is limited information available about the...
2010-03-30T15:29:49Z (iso8601)
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The family Bibionidae has a worldwide distribution and includes
approximately 700 species in eight extant genera. Recent studies have not produced
compelling evidence supporting Bibionidae as a monophyletic group or identified the
sister group to...
2004-06-03 (iso8601)
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The structure and transcriptional activity of intranuclear
and isolated chromatin from logarithmically growing
yeast cells has been compared to chromatin from cells which
have entered the stationary phase and ceased growing. Both
chromatins show a...
1980-10-02 (iso8601)
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