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251 - 275 of 2700 Items << < 6 7 8 9 10 11 12 13 14 15 > >>
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Gerald W. Williams Prints and Postcards of Native Americans Collection consists primarily of black and white and color lithographic mounted postcards and photographic prints, some by well-known western photographers and studios. The time period...
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Photographs
documenting the activities of the New England Fish Company; The New England Fish Company (NEFCO) was founded in 1868 when eleven
wholesale fish dealers met in Boston, Massachusetts, for the purpose of
systematically...
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"To: Klamath River Technical Advisory Team." "February 4, 1999."
1999-02-04
2005-07-19 2005-05-23 |
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Parasites and pathogens influence the size and stability of wildlife populations, yet many population models ignore
the population-level effects of pathogens. Standard survival analysis methods (e.g., accelerated failure time models)
are used to...
2014-04-03 (iso8601)
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Chum salmon from different stocks were bred together in two experiments. Three stocks contributed gametes to one experiment, two stocks to another. Sibling groups of eggs, alevins, and fry were maintained in a common environment. Variability of...
1981-12-03 (iso8601)
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On April 7, 2000, the National Marine Fisheries Service (NMFS) received a request from the U.S. Army Corps of Engineers, Portland District (COE) for Endangered Species Act (ESA) section 7 formal consultation for programmatic coverage for a...
2000-06-22 (iso8601)
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Salmon hatcheries have been utilized throughout the Pacific Northwest for many decades to mitigate losses, supplement natural spawning populations, and to provide tribal, sport and commercial fishing opportunities. Currently, there is substantial...
2015-06-09 (iso8601)
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Seasonal emergent wetlands in the Pacific Northwest have not been regarded
traditionally as fish rearing habitat, despite access to such habitat when river flows
overtop riverbanks and connect to the floodplain. As a result, restoration and...
2005-02-28 (iso8601)
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The presence and significance of salmon for prehistoric and aboriginal people of the Columbia Plateau is a matter of considerable debate among anthropologists, archaeologists and historians. Data from over 100 archaeological sites are scrutinized...
1987-01-28 (iso8601)
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reservoir levels can preclude food production at the river's edge.36 Scouring flows that create salmon gravels have been eliminated. Migratory conditions, water salinity and temperature in the estuary and ocean have been changed.37 A juvenile fish...
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ABSTRACT
A water quality study was performed in the mainstem Klamath River from Keno, Oregon to Seiad Valley, California during 1996 through 1998. Four sites within the study area were continuously monitored using multiparameter recorders....
2024-11-22
2007-12-12 2005-11-01 |
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This study was designed to provide information about the juvenile life history of
coho salmon, Oncorhynchus kisutch, in the Tenmile Lakes in Oregon by 1) classifying
scales of spawning fish and outgoing smolts (1+), 2) assessing the contribution...
1992-03-16 (iso8601)
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The behavior of two species of stream salmonids, juvenile coho salmon, Oncorhynchus kisutch (Walbaurn) and cutthroat trout, Salmo clarki clarki Richardson, was studied in terms of the time spent by individual fish in carrying out various...
1969-07-07 (iso8601)
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Papers of a
fisheries biologist, author and editor, federal official, and University of
Washington professor.; Best known as a leading authority on fisheries and for initiating and
directing the University of Washington fisheries...
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Photographs of Alaska, including Native Americans, canning and fish processing facilities, mines, and miscellaneous scenic views; William Howard Case was born on April 19, 1868, in Marshalltown, Iowa, and lived most of his life in South Dakota and...
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The Joan Wulff Papers include correspondence, speeches,
article and book manuscripts, galleys, brochures, artwork, and photographs. Topics include
fly fishing, fly fishing techniques, and fly fishing equipment for women.;...
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Tuberculosis in salmonoid fishes was first observed in the 1952 run of fall chinook salmon (Oncorhynchus tshawytscha) returning to the Bonneville Hatchery of the Oregon Fish Commission. In the studies reported here, tuberculosis was found not only...
1958-12 (iso8601)
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Sandy beach surf zones serve as alternative nursery habitats for juvenile Chinook salmon (0 age) during their early marine residency, a period considered critical due to high and variable mortality rates. Despite the importance of early marine...
2016-05 (iso8601)
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A recent trend of enhancing freshwater emergent wetlands for waterfowl and other wildlife has raised concern about the effects of such measures on juvenile salmonids. We undertook this study to quantify the degree and extent of juvenile Pacific...
2006-05 (iso8601)
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Sea lice (lepeophtheirus salmonis) are a type of ectoparasite that hosts on Atlantic salmon (Salmo salar), weakening the fish and slowing its growth rate. In addition to the direct loses associated with reduced fish growth, sea lice also cause...
2014-07-07 (iso8601)
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Myxobolus cerebralis, a myxozoan parasite of salmonids, is the causative
agent of whirling disease. The parasite is considered widespread throughout
northeastern Oregon in the Grande Ronde and Imnaha River basins where
threatened and endangered...
2002-09-27 (iso8601)
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This report outlines long-term planning and monitoring activities that occurred in 1991 and 1992 in the Stanley Basin Lakes of the upper Salmon River, Idaho for the purpose of sockeye salmon (Oncorhynchus nerka) recovery. Limnological monitoring...
1992-01-01
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Abstract "Seeking Refuge" examines the history of migratory waterfowl management along the Pacific Flyway, the westernmost of four main migration routes in North America. Drawing on approaches from historical geography and environmental history,...
2024-11-22
2005-01-03 2004-11-30 |
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206 p. In the Western Water Policy Review Act of 1992, Congress charged the President with reviewing and reporting on federal activities in the west that affect the allocation and use of water resources. The legislation directed the Western Water...
1997-08-01
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