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2451 - 2475 of 2700 Items << < 94 95 96 97 98 99 100 101 102 103 > >>
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1 map ; 67 x 186 cm. In lower right: H Ex 40 52 1. Ex. doc. (United States. Congress. House) ; 52d Congress, 1st session, no. 40. Relief and bathymetry shown by contours. Includes inset of Seattle metropolitan area, "Profile of canal from Smith's...
1891-05-02
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1973-04-24 (iso8601)
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1985-02-14 (iso8601)
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Stabilization of the Yaquina Bay shoreline along the northeastern edge of the Hatfield Marine Science Center (HMSC) campus became necessary to halt erosion that threatened both HMSC critical infrastructure (seawater storage tank) and public access...
2015-02-11 (iso8601)
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Pesticides are widely used to control undesirable pests and may be applied directly to water or lands directly adjacent to water. There can be unintended consequences, however, to native, threatened, and endangered species. There is little...
2012-04-20 (iso8601)
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Coastal communities in the Pacific Northwest are looking for ways to increase the diversity of their economies in order to reduce the negative impacts of cyclic economic swings. The economic base of many coastal communities is directly tied to...
2008-12-30T15:00:29Z (iso8601)
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Freshwater discharge from large rivers into the coastal ocean creates tidally-driven frontal systems
known to enhance mixing, primary production, and secondary production. Many authors suggest that
tidal plume fronts increase energy flow to...
2014-09 (iso8601)
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The research presented in this thesis is concerned
with the
characterization of two salmonid cell lines, CSE 119 derived
from
embryos of coho salmon (Oncorhynchus kisutch) and
STE 137 derived
from embryos of steelhead trout (Salmo gairdneri).
The...
1970-10-12 (iso8601)
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Disease is a primary threat to the continued growth in salmon aquaculture due to its extensive effects on the sector. Aquaculture farms suffer the most direct and immediate economic losses through reduction in growth, low feed efficiency and...
2012 (iso8601)
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"Clear Creek, tributary of North Fork John Day River, is a mountain stream located in the Blue Mountains of eastern Oregon. It joins Granite Creek about 1.5 miles below the old abandoned mining town of Granite. Gravel removed from Clear Creek by...
1965 (iso8601)
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A new Lactobacillus species is proposed to include 17 strains of a bacterium from rainbow (Salmo gairdneri) and cutthroat trout (Salmo clarki), and chinook salmon (Oncorhynchus tshawytscha). The bacterium was isolated most frequently from fish...
1983-12-01 (iso8601)
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There are only three fundamental sources for increasing seafood supply: 1) better management and utilization of wild fish stocks, 2) aquaculture and 3) aquaculture-enhanced 'wild' fisheries. However, nearly all significant growth in global seafood...
2008 (iso8601)
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As background, at the national level, for many years the U.S. Bureau of Commercial Fisheries concentrated on exploratory
fishing, gear development, food science, catch statistics, scientific research, and marketing, and serviced the commercial...
2001 (iso8601)
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Traditional aquaculture has to a large extent used herbivore species with limited requirements for additional
feeding. However, in intensive aquaculture production one farm carnivore species like salmon and also feeds herbivore
species with...
2001 (iso8601)
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Diets containing cyclopropenoid fatty acids (CPFA) were fed to
rainbow trout. At a level of 223 ppm (from Sterculia foetida oil),
these CPFA in six weeks reduced weight gain by as much as 50 percent
over the control fish on the same diet without...
1967-03-17 (iso8601)
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Chromosome counts were determined for 152 accessions of Pseudoroegneria
spicata (Pursh) A. Löve and, combined with existing count
data, used to plot the distribution of diploid and tetraploid populations.
Morphological variation of 55 characters...
1986-03-20 (iso8601)
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Sharing data across geographic and jurisdictional boundaries is one way that Pacific Northwest resource managers, policy makers, and scientists can improve their ability to make decisions about natural resources, including salmonid recovery,...
2009 (iso8601)
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Stream management and design recommendations related to the Salmon Habitat Recovery Program in the Pacific Northwest require area specific information concerning appropriate methods of stream classification, bankfull discharge recurrence...
1997-01-17 (iso8601)
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