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1001 - 1025 of 2700 Items << < 36 37 38 39 40 41 42 43 44 45 > >>
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Demographic and evolutionary dynamics in wild metapopulations are critically affected by the balance between dispersal and local adaptation. Where populations are demographically interconnected by migration, gene flow is often assumed to prevent...
2014-12-05
2014-12-05 2014-10-01 |
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Photographs of Alaska, British Columbia and the Yukon Territory, mostly circa 1898; In 1898, Peter R. Ritchie took trip via Dyea across the Chilkoot Pass, Lindeman Lake, and down the Yukon River to Dawson. Ritchie resided in Dawson for the next...
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Boats are taking people up the Snake River from Lewiston on Field surveys beginning at the mouth of the Salmon River
1953-09-16
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EXECUTIVE SUMMARY
Section 7 of the Endangered Species Act (Act) [16 U.S.C. 1531 etseq.] outlines the procedures for Federal interagency cooperation to conserve Federally listed species and designated critical habitats.
Proactive Conservation...
1998-03-01
2005-07-19 2005-06-27 |
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An anemia of juvenile chinook salmon (Oncorhynchus tshawytscha) is described and stages of development separated by recognizable syndromes. A vitamin E-deficient diet of low rancidity produced a severe microcytic anemia with strong immature red...
1965 (iso8601)
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What is the nature of evolutionary divergence of the jaw skeleton within the genus Oncorhynchus? How can two associated bones evolve new shapes and still maintain functional integration? Here, we introduce and test a ‘concordance’ hypothesis, in...
2015-09 (iso8601)
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Body morphology of juvenile Chinook salmon Oncorhynchus tshawytscha in the upper Willamette
River, Oregon, U.S.A., was analysed to determine if variation in body shape is correlated with migratory
life-history tactics followed by juveniles. Body...
2014-10 (iso8601)
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Three experiments were designed to determine if and how steelhead trout,
Oncorhynchus mykiss, may affect chinook salmon, O. tshawytscha, when they are
confined together as in a raceway or on a barge. We observed groups of chinook and
steelhead...
1997-04-29 (iso8601)
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1 map; 58 x 41 cm. Scale: 2000 Feet per 1 Inch. Compiled from Official Notes Filed in the office of Charles H. Ballard, U.S. Dep. Min. Sur., and from Actual Field Surveys by Henry Carr, C.E., March, 1888. This map depicts this area in its heyday....
1888-11-23
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ABSTRACT The U.S. Geological Survey analyzed selected hydrologic conditions as part of a watershed analysis of the Salmon River watershed, Washington, conducted by the Quinault Indian Nation. The selected hydrologic conditions were analyzed...
2024-11-23
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The metabolic clearance rate (MCR) of plasma radioactivity after a
single intracardial injection of ³H-cortisol was elevated during the
Spring in yearling coho salmon, Oncorhynchus kisutch. The reasons for
this increase in MCR are not clear, but...
1983-05-04 (iso8601)
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Juvenile coho salmon (101-400 mm) were sampled by
purse seine off the Pacific Coast from Waatch Point,
Washington to Four Mile Creek, Oregon, out to 30 mi
offshore, during the months of May, June, and September in
1982 and 1983. Sea surface...
1985-03-01 (iso8601)
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A growth model is developed for coho salmon which accounts for
temperatures and feeding rates typically encountered in fish hatchery
operation. Feeding rates utilized by the model ranged from
maintenance to maximum utilizable rations. The model is...
1982-07-30 (iso8601)
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Aseries of dams on the Deschutes River, Oregon, act as migration barriers that segregate the river system into upper
and lower basins. Proposed fish passage between basins would reunite populations of native potamodromous fish and
allow anadromous...
2012-11-12 (iso8601)
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Much attention has been given to how to model the price spread since Gardner's important contribution was published in the mid seventies. Most farm-retail price spread studies are applied on agriculture products restricted to domestic trade only....
2008 (iso8601)
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Although it is known that polycyclic aromatic hydrocarbons (PAHs) can be found in smoked meats, little is known about their prevalence in Native American smoked fish. In this work, the effect of traditional Native American fish smoking methods on...
2012-07-11 (iso8601)
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The main objective of this study was to estimate the demand for and net economic benefits from Oregon salmon sport fishing. The travel cost method was used as the primary technique for demand analysis. Several empirical estimates of consumer...
1985-04-30 (iso8601)
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central basin are as follows : Retail trade, 26 ; wholesale trade, 6.5; transportation, 8 ; construction, 10: professional and related services, 13; communications and utilities, 4; Government, 8; and all other, about 25.
Business opportunities...
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biological systems," and propose an allocation of costs among communities and industries.79 The plan would be implemented with hydropower revenues and financial contributions from state and federal agencies.
The differences between the...
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If state and federal programs have limitations, coordination between the two jurisdictions is often spotty. While federal and regional policy makers consider major investments for ecosystem recovery in the river's mainstem, the state water-rights...
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The Columbia River has a similar history. Hatcheries and other technologies were offered as the antidote to dams. When Grand Coulee blocked salmon from the Columbia's upper reaches, upper basin fish stocks were transplanted to hatcheries below the...
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v. Washington Department of Ecology,220 the U. S. Supreme Court decided that states may deny water quality permits to hydropower projects based on their salmon impacts. In effect, the lack of flow to support an existing salmon population is a form...
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