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1026 - 1050 of 1229 Items << < 37 38 39 40 41 42 43 44 45 46 > >>
1026 - 1050 of 1229 Items << < 37 38 39 40 41 42 43 44 45 46 > >>
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The purpose of this study was to investigate the primary factors
affecting colony size, reproductive success, and foraging patterns of
Double-crested Cormorants (Phalacrocorax auritus albociliatus) nesting at
East Sand Island in the Columbia River...
2002-10-21 (iso8601)
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M.S. Thesis by Kenneth E. Biesinger, in partial fulfillment of the requirements for the degree of Master of Science in the Department of Fishery Management, Utah State University, 1961. Written under direction of Professor William F. Sigler....
1961-09-20
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In the Barents Sea, recruitment of North-East Arctic cod is affected by sea temperature, being higher in warm years. Cod dynamics are furthermore influenced by time-lagged competition for capelin with herring, and the intensity of size-selected...
2008 (iso8601)
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Administrative papers of a labor union representing several dozen local units.; Union composed of several dozen local units. Two predecessors of the
Longshoremen's and Warehousemen's union were the United Fishermen's Union of
the Pacific,...
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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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Gradients of physical disturbance are central to
theories of community organization yet rarely are studies
performed in which physical factors are experimentally
manipulated. Pothole tidepool algal communities exhibit
distinct zonation patterns...
1992-03-17 (iso8601)
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Several evolutionarily significant units (ESUs) of Columbia River basin Chinook Salmon Oncorhynchus tshawytscha
and Coho Salmon O. kisutch are listed as threatened or endangered under the U.S. Endangered Species Act. Yet little is
known about the...
2014-01 (iso8601)
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Polychaete annelids from 48 benthic samples containing over
2000 specimens were identified. Samples were taken with either an
anchor dredge or an anchor-box dredge from a 15 station transect
(44° 39. 1'N) that ranges from 800 to 2900 meters in...
1969-05-25 (iso8601)
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Production of surimi represents a potential utilization of a number of low-valued
fish species, one of which, Pacific whiting, represents the largest biomass off the West
Coast of the United States. However, a protease enzyme softens the fish...
1996-06-27 (iso8601)
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The habitat for the basin's valuable wildlife resources has been, and will continue to be altered by increasingly intensive use of the region by man. Additional developments in prospect will result in wildlife losses in some instances but in other...
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North Pacific albacore (Thunnus alalunga) is a highly migratory and
commercially valuable species of tuna. All stock assessments and management
decisions for North Pacific albacore are presently based on the assumption of a single,
uniform stock....
2009-07-13T16:07:17Z (iso8601)
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In eastern boundary current upwelling ecosystems, mesoscale circulation features such as eddies and upwelling filaments play a prominent role in the transfer of water and the associated plankton from the productive nearshore to the oligotrophic...
2008-04-15T22:52:02Z (iso8601)
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Objectives: Collect data on mussel distribution, habitat utilization, and other related
data in the Brazos River, San Antonio River, and Sabine River basins.
Identify mussels, prepare species lists, and report data.
2009-11-24
2009-11-24 2008-01-01 2009-11-24 |
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Combustion properties of kraft black liquor solids were studied using a
laminar entrained flow reactor. The tendency of black liquors to release fume
(compounds containing Na⁺, K⁺, Cl⁻, SO₄²⁻, SO₃²⁻, S₂0₃²⁻ and C0₃²⁻) during
combustion were...
2001-06-08 (iso8601)
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Molybdenum is an essential component of biogeochemical cycling, most notably
as a component of the nitrogenase enzyme used in biological nitrogen (N) fixation. While
the important role of phosphorus (P) in limiting N fixation in ecosystems has...
2014-08-15 (iso8601)
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1982-2002; ill., maps; Title covers calendar years 1985-1987; CA 9000-3-0003 Subagreement 12; Includes bibliographic references; Issues lack volume numbering
1987-09-20
2009-01-20 2009-03-23 |
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As part of the U.S. Geological Survey's National Water-Quality Assessment program, an analysis of the existing ground-water-quality data in the Upper Colorado River Basin study unit is necessary to provide information on the historic water-quality...
1998-09-20
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A classification of forest vegetation is presented for the Mt. Baker-snoqualmie Forest. It is based on the potential National vegetation and uses the plant association as the basic unit. The classification is based on 2464 sample plots distributed...
2010-05-27T20:52:12Z (iso8601)
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A classification of forest vegetation is presented for the Colville National Forest in northeastern
Washington State. It is based on potential vegetation with the plant association as the basic unit. The
classification is based on a sample of...
1995-10 (iso8601)
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My thesis explored the effects of environmental variability on population
dynamics and community composition of aquatic insects. Environmental variability in
the form of flow regime in streams can limit the distribution and life-history traits of...
2010-01-20T21:48:54Z (iso8601)
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The Oregon State Game Commission’s Basin Investigations Section began studies in the Upper Willamette Basin relevant to this report in the spring of 1964. These investigations were continued into 1966. Primary objectives were to define water...
1966-06 (iso8601)
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