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151 - 175 of 481 Items << < 2 3 4 5 6 7 8 9 10 11 > >>
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Aquatic ecological investigation is expanding to encompass considerations of
multiple scales across large landscapes. Much of the analysis included in this work
focuses specifically on coho salmon (Oncorhynchus kisutch) in multiple subbasins on...
2007-11-26T20:53:33Z (iso8601)
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Much of what is recommended to benefit salmon is what has been needed for a long time and what many have known was needed. More than
50 years ago, federal biologists warned that the consequences of continuing habitat degradation and additional...
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Eight scale characters of known hatchery and wild coho salmon
(Oncorhynchus kisutch) were compared, and a linear discriminant
function was used to determine if hatchery and wild adult coho
salmon could be correctly identified by their scales....
1978-08-04 (iso8601)
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The Fish and Wildlife Service and the National Marine Fisheries Service (Services) have adopted a policy that will address the conservation needs of species listed, or proposed to be listed, under the Endangered Species Act of 1973, as amended...
1996-06-03
2008-08-19 2005-06-22 |
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Thesis (B.A.) -- Whitman College, 2002; Includes bibliographical references (leaves 79-83)
2024-05-07
2005-02-03 2004-12-23 |
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The current recovery strategy for threatened Snake River Chinook salmon Oncorhynchus tshawytscha relies heavily on improvements to the quality of freshwater spawning and rearing habitat; however, the potential survival benefit from these actions...
2004-01-01
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An approach to understanding and managing anadromous salmon, steelhead,
and sea-run cutthroat trout (Oncorhynchus spp.) based on life history and
evolutionary adaptive capacities of species and stocks is presented. Species, stocks,
and local...
1993-06-11 (iso8601)
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Only portions of issues of The Water Report are available in the Klamath Waters Digital Library. See the full report at http://www.thewaterreport.com/
2004-03-15
2008-07-18 2006-06-13 |
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1. Loss of Tributary Habitat
Salmon are particularly sensitive to habitat degradation. They need cool, clean, running streams and healthy alluvial floodplains in which to reproduce and grow.' They require streamside riparian cover, large, woody...
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"Submitted to Klamath Falls Resource Area, Bureau of Land Management, Lakeview District, Klamath Falls, Oregon." ; "Contract no.: HAP032021."; Includes bibliographical references (p. 178-200)
2024-05-07
2008-03-28 2007-02-16 |
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"GAO-05-211"; "April 2005"
2024-05-07
2005-05-06 2005-05-03 |
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Fact sheet summarizing what a biological opinion is and how one is related to the issues surrounding the Klamath Project.
2001-04-06
2005-07-18 2005-06-27 |
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We evaluated patterns of redd site selection in relation to physical habitat variables (depth, velocity, and gravel size) using logistic regression and developed spawning habitat suitability models for two populations of spring Chinook salmon...
2004-01-01
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Oregon Department of Forestry
Forest Practices Section
2600 State Street
Salem, OR 97310
Dl Fish 8 Wildlife
Oregon Department of Fish and Wildlife
Habitat Conservation Division
P. O. Box 59
Portland, OR 97207
Introduction
Identifying Oregon...
1995-05-07
2005-01-20 2004-12-22 |
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As part of a hierarchical approach to classifying watersheds and stream habitats
based on geomorphic and geologic criteria, we defined ten classes of fluvial and
lacustrine habitats at the scale of valley segments. Valley segments are landscape...
1992-04-30 (iso8601)
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3. Cumulative Impacts
All of these developments have fragmented the Columbia River salmon's habitat and destroyed connections among local populations. Scientists theorize that connections among salmon habitats and populations is important in...
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CRS issue brief; "Updated May 19, 2005."
2005-05-19
2005-07-22 2005-06-27 |
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The Umpqua National Forest (UNF) submitted June 3, 1999, January 14, 2000, and April 14, 2000 letters requesting consultation for a number of proposed activities that were determined likely to adversely affect Oregon Coast (OC) coho salmon...
2000-10-16 (iso8601)
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ambitious document, addressing not only the mitigation needs of salmon, but also proposing an institutional structure in which the Service would assume responsibility for coordinating a wide array of recovery actions.228 In substantive areas, the...
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Habitats for juvenile chinook salmon (Oncorhynchus tshawytscha) were
observed at a high flow during the spring of 1989 and at a low flow during the
spring of 1991 in the lower American River of California. Parameters of
microhabitats in eight...
1992-07-28 (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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3. The 1992-1993 Biological Opinions and the Strategy for Salmon
The National Marine Fisheries Service listed Snake River sockeye salmon as endangered in late 1991,163 and Snake River chinook listings soon followed.164 With little time to...
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Lease, Hilary M., Histopathological Changes in Gills of Lost River Suckers (Deltistes luxatus) Exposed to Elevated Ammonia and Elevated pH, M.S., Department of Zoology and Physiology, December, 2000.
The Lost River sucker {Deltistes luxatus) is...
2024-05-07
2008-04-23 2005-05-09 |
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The sediments, morphological features and riverflows that define the hydrogeomorphology of natural river channels provide physical habitat diversity that sustains the aquatic biodiversity of river ecosystems. This simple concept underpins the...
2005-12-01
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