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2101 - 2125 of 2700 Items << < 80 81 82 83 84 85 86 87 88 89 > >>
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At the request of Dr. E.D. Perry, (23 August 1957), an evaluation was made of U.S. Fish and Wildlife Service River Basin Studies air and water temperature gathering program for the Snake River Basin. The only criteria was the desirability for...
1957-09 (iso8601)
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The discovery of an artifact cache containing Western Stemmed Tradition projectile
points in a clearly defined pit feature at the Cooper’s Ferry site offers a unique
perspective on early lithic technology and logistical organization in western...
2014-10 (iso8601)
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This paper describes the assumptions, scenarios and calculations underlying best estimates of the current costs of three notifiable fish diseases in the United Kingdom: infectious salmon anaemia (ISA), viral haemorrhagic septicaemia (VHS) and...
2006-11 (iso8601)
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Mathematicians have been concerned with population growth
and movement since the days of Leonhard Euler and Thomas Malthus.
Chapter i of this paper sketches the history of the development of the
modern population theory.
In Chapter II, a partial...
1977-05-05 (iso8601)
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Non-market valuation research has produced value estimates for over forty
threatened and endangered (T&E) species, including mammals, fish, birds,
and crustaceans. Increasingly Stated Preference Choice Experiments
(SPCE) are utilized for...
2010 (iso8601)
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Effects of diet on food energy utilization by grass
carp fed aquatic plants or formulated diets with varied
lipid sources and levels are presented in three
manuscripts. Significant effects of diet on food
consumption, digestion, growth and muscle...
1988-10-06 (iso8601)
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Although differences between selective pressures in hatcheries
and streams have been theorized to cause genetic divergence between
hatchery and wild salmonids, evidence of this is lacking. This study
was initiated to document the presence or...
1991-03-12 (iso8601)
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Myxobolus squamalis is a Myxozoan parasite of salmonids, which contributes to lowered fitness of hatchery and wild fish in the Pacific Northwest of North America. The only GenBank DNA sequence of M. squamalis is from Oncorhynchus tschawytscha...
2012-05-31 (iso8601)
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The Columbia River in the Pacific Northwest region of the U.S. is home to the greatest hydroelectric system in
the world. Its dams provide 75 percent of the power needs of nearly 10 million people. But the dams also create numerous
obstacles to...
2001 (iso8601)
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On June 21-22, 2011, the Independent Multidisciplinary Science Team (IMST) hosted a technical workshop for local and regional natural resource managers and practitioners in urban and rural-residential land uses. The purpose of the workshop was to...
2012-06-13 (iso8601)
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In the fall and winter of 1999/2000, efforts by federal, state, and local
agencies to restore salmon habitat by protecting land adjacent to rivers and streams
drew intense responses citizens in the Pacific Northwest. Despite efforts to
"involve"...
2001-10-29 (iso8601)
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This essay presents a case study of the Regional Gravel Initiative (RGI) workshop, one instance of policy makers using science to inform decision making for sustainable and streamlined processes. The RGI consists of eight agencies, both federal...
2010-04-01T16:44:15Z (iso8601)
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Recent developments in Distributed Temperature Sensing (DTS) have allowed
new insight into the surface-to-ground water interaction. The continuous temperature
measurement by the DTS allows for cool water inflows to be located during warm
summer...
2008-08-22 (iso8601)
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This article is based on a total of 204 observations, many
of which were censuses.
Between Siletz River Mile (RM) 50.0 and 50.6, Llewellyn made 151
observations of waterbirds during 1981-1993. He noted a total of 12 species;
most were seen during...
1994 (iso8601)
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The study area for this assessment is composed of the Alsea, Salmon, Siletz, Yachats, and
Yaquina River watersheds and those watersheds that drain directly to the ocean between
Cascade Head and Cape Creek at Heceta Head (Ocean Tributaries)....
2001-07 (iso8601)
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