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676 - 700 of 1229 Items << < 23 24 25 26 27 28 29 30 31 32 > >>
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M.S. thesis by Stanley K. Y. Loo, in partial fulfillment of the requirements for the degree of Master of Science in Fishery Biology, in the Department of Wildlife Management, Utah State University, 1960. Written under direction of Professor...
1960-09-21
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Genetics, gene flow, and distribution of pesticide
resistance traits were examined for organophosphate (OP)
resistance in three beneficial phytoseiid mites. Levels
and genetics of OP resistance in Amblyseius andersoni
were examined first....
1993-07-21 (iso8601)
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A novel swine-origin H1N1 influenza A virus has been identified as the cause of the 2009 influenza pandemic in humans. Since then, infections with the pandemic (H1N1) 2009 influenza virus have been documented in a number of animal species. The...
2010-05 (iso8601)
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Salmonberry community structure was examined in alder-dominated
riparian buffer strips in the Oregon Coast Range. Salmonberry growing on slopes
was found to respond differently, to both characteristics of the buffer strips and
to environmental...
1992-06-30 (iso8601)
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In the California Current coastal boundary zone, the spring transition between downwelling and upwelling conditions, along with the fluctuating structure of the Columbia River plume, creates highly dynamic interactions. In this study, we...
2013-04-19 (iso8601)
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Dwarf mistletoes (Arceuthobium species) influence many processes within forested ecosystems, but few studies have examined their distribution in relation to climate. An analysis of 1549 forested plots within a 14.5 million ha region of southeast...
2012 (iso8601)
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The Klamath Basin Ecosystem Restoration Office (ERO) - Humboldt State University Geographic Information Systems Work Group (HSU-GIS Group) was established to support ERO's mission to develop an ecosystem restoration strategy for the Klamath Basin...
1995-09-21
2005-03-17 2005-02-15 |
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ill., maps, bound; Thesis (M.S.)-Oregon State University, 1978; Includes bibliographical referenes (leaves 151-162)
1978-09-21
2009-08-20 2009-12-08 |
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This study was conducted in the old-growth forests of Clatsop,
Tillamook, and Lincoln counties, Oregon. The three objectives of
the research were to describe and classify the near-climax plant
communities found within the forests, to relate the...
1971-03-19 (iso8601)
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Northern anchovy (Engraulis mordax) are a dominant forage fish in the California Current large marine ecosystem (CCLME). However, little is known about northern anchovy abundance, distribution, age structure, or population fluctuations relative to...
2008-03-21 (iso8601)
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Assessing distribution of the expected bio-economic impacts of
management measures between fleet segments is a main issue for decision
making in fisheries management. This requires as a first step a good
description of the system and of the...
2010 (iso8601)
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Well-defined fronts develop at the seaward edge of riverine plumes where suspended materials and planktonic organisms are concentrated by convergent water flows. Riverine plume fronts have been hypothesized to be favorable fish habitats because...
2005-09-01 (iso8601)
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In order to decide whether or not to develop biomass energy facilities and where to best locate them, developers and investors need accurate assessments of fuel supply. This includes information about the distribution and concentration of fuel...
2011-07-01 (iso8601)
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Epiphytic, planktonic and benthic diatom assemblages were investigated in Netarts Bay, Oregon. Samples were collected for a
one-year period from February 1980 to March 1981. A planktonic flora was observed only during periods of offshore...
1983-05-02 (iso8601)
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Overstory species influence the distribution and dynamics of nutrients in forest ecosystems. Ecosystem-level estimates of Ca, Mg, and K pools and cycles in 50-year old Douglas-fir and red alder stands were used to determine the effect of overstory...
1992-01-01
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Dwarf mistletoes (Arceuthobium species) influence many processes within forested ecosystems, but few studies have examined their distribution in relation to climate. An analysis of 1549 forested plots within a 14.5 million ha region of southeast...
2012-04 (iso8601)
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Knowledge of current and historical conditions is needed to guide conservation and restoration policies, but such information is lacking for most taxa. This problem is especially severe for small, inconspicuous taxa, such as the thousands of...
2016-12-01
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Globally the forest harvesting industry is becoming increasingly mechanized. Driving
this trend is the desire to increase productivity and reduce cost, as well as to improve
labor-related issues. With mechanization comes an in-forest platform for...
2005-03-02 (iso8601)
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In the Logan River, UT, USA, exotic brown trout demonstrate a strong allopatric distribution and occur at high densities at low-elevation sites and in tributaries, and in low densities at native trout dominated, high-elevation sites. Summer...
2008-01-01
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The distribution of hydrophobic ionogenic organic compounds
(HIOC's) between aqueous and nonaqueous phases has been
investigated. The HIOC's are aniline and methyl substituted
anilines. The aqueous phases are methanol-water mixed solvents with...
1989-09-05 (iso8601)
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Evaluation of meta-sedimentary bedrock as a source of stored water available
to plants in a mediterranean climate is presented based on: root length distribution
(RLD), root morphology, rock water holding capacity and seasonal pattern of water...
1995-06-21 (iso8601)
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The Bering Sea is a highly productive ecosystem with abundant prey populations in the summer that support some of the largest seabird colonies in the Northern Hemisphere. In the fall, the Bering Sea is used by large numbers of migrants and...
2016-05-10 (iso8601)
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This study was conducted to show the effects of sand and coarser sediments on the distribution and abundance of insects in Emerald Creek and the Middle Fork of the St. Maries River. Stream profile, substrate conditions, water chemistry and benthos...
1971-09-01
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A total of 19 species of hyperiid amphipods was collected from 1963 to 1967 off Oregon.
Parathemisto pacifica, Paraphronima gracilis, Streetsia challengeri, Tryphana malmi, Hyperia
medusarum, Hyperoche medusarum, and Primno macropa were common....
1975 (iso8601)
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