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1551 - 1575 of 2700 Items << < 58 59 60 61 62 63 64 65 66 67 > >>
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Oregon Aqua-Foods, Inc.
2008-10-03
2008-10-03 1981-11-23 |
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I concluded that juvenile steelhead trout and chinook salmon were not affected by the levels of batholith sediment we added to riffle sections during summer but a reduction of pool area by sediment caused a direct decrease in the number of fish...
1975-04-01
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The original plans for the methodology study did not include provisions for a history subproject. However, as studies progressed on some of the other subprojects, it became evident that a general history of Salmon Basin was desirable. The writer...
1971-03-01
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ADF&G
2008-10-03
2008-10-03 1977-11-23 |
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The Oregon Fish Commission opposed construction at this time any dam in the middle of Snake River which would block salmon runs.
1953-11-18
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2008-10-03
2008-10-03 1974-11-23 |
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2008-10-03
2008-10-03 1973-11-23 |
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1
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California
Oregon
Cover Photo: Lower Klamath
National Wildlife Refuge at sunset
Tupper Ansel Blake/ USFWS
Map Detail Area:
Upper Klamath
River Basin
ii
T he Klamath River Basin presents
numerous challenges as well as
opportunities...
2024-11-23
2005-02-04 2005-01-27 |
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This report presents information on biogeography and broad-scale ecology (macroecology) of selected fungi, lichens, bryophytes, vascular plants, invertebrates, and vertebrates of the interior Columbia River basin and adjacent areas. Rare plants...
1998-11-23
2006-11-30 2005-09-22 |
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1. There is no evidence of a decline in the striped bass population of Coos Bay.
2. The striped bass, a species introduced to the West Coast of North America, has been important as a recreational and commercial fish in Coos Bay since the late...
1950 (iso8601)
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We recovered passive integrated transponder (PIT) tags from nine piscivorous waterbird colonies in the Columbia River basin to evaluate avian predation on Endangered Species Act (ESA)-listed salmonid Oncorhynchus spp. populations during 2007–2010....
2012 (iso8601)
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Five species of aquatic organisms were exposed to TCDD. Lethal effects of initial exposure to coho salmon of 23.4 nanogram TCDD/gram fish wet weight (23.4 ng/g), or equivalent to 100 nanogram
per liter (100 ng/l) TCDD in water, for 24 hours were...
1974-04-16 (iso8601)
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1954-05-10 (iso8601)
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Salmonid run sizes are strongly affected by their early marine stage. Fully understanding
the life history of salmonids means understanding how they interact with their marine
environment and with other fishes. Changes in the biological and...
2006-04-26T20:25:31Z (iso8601)
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This paper examines the tradeoffs between the production of crops and habitat for juvenile salmon, through flood events, on the Yolo Bypass floodplain. I investigate how changes in the fishery management institution affect the economic returns to...
2014-07-07 (iso8601)
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A primary objective of the management practices of the Oregon
State Game Commission is to maximize and sustain the annual harvest
of salmon and steelhead by sportsmen fishing in Oregon. Assessment
of these practices is dependent upon an accurate...
1964-08-07 (iso8601)
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Global warming is expected to affect the ecosystem in the Northeast Atlantic, and sufficient changes will also affect
the aquaculture industry. Farming of salmon and trout is the biggest aquaculture industry in Norway. The export
value was about 2...
2006-11 (iso8601)
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