Results
201 - 225 of 481 Items << < 4 5 6 7 8 9 10 11 12 13 > >>
201 - 225 of 481 Items << < 4 5 6 7 8 9 10 11 12 13 > >>
|
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)
|
|
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
|
|
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
|
|
Tidal marshlands in the upper estuary ecotone provide essential habitat for
juvenile salmonids. In this environment, salmonids grow rapidly and acclimate to
saltwater. Worldwide, tidal marshes have been diked and drained to provide
agricultural...
2010-08-06T18:09:40Z (iso8601)
|
|
This thesis addresses the costs of implementation of the Endangered Species Act (ESA)
in the particular case of Snake River chinook salmon. Unlike most previous listings under
the act, restoration of Snake River salmon will have impacts on a very...
1996-02-07 (iso8601)
|
|
K. D. Swan was the first photographer
for the U.S. Forest Service's Northern Region Headquarters in Missoula,
Montana. This collection represents his non-professional interests in outdoor
recreation and travel and does not contain many...
|
|
Early life stages of many marine and diadromous fish species use sandy beach surf zones, which occur along >50% of the world's marine coastlines. This extensive habitat can provide juvenile fishes with an abundant supply of potential prey and the...
2012-10-05 (iso8601)
|
|
River managers often seek to understand habitat availability and quality for riverine organisms within the physical template provided by their landscape. Yet the large amount of natural heterogeneity in landscapes gives rise to stream systems...
2012-12-01
|
|
This paper examines and ranks restoration alternatives for improving fish habitat by evaluating tradeoffs between fish production and restoration costs. Optimization modelling is used to maximize out-migrating coho salmon (Oncorhynchus kisutch)...
2011-01-01
|
|
This paper examines and ranks restoration alternatives for improving fish habitat by evaluating tradeoffs between fish production and restoration costs. Optimization modelling is used to maximize out-migrating coho salmon (Oncorhynchus kisutch)...
2011-01-01
|
|
The high-density of airborne LiDaR data has paved the way for a wide range of multi-scalar analyses of watersheds, some of which elegantly highlight abiotic-faunal interactions. However, most LiDaR sensors do not penetrate the water surface, and...
2009-12-01
|
|
detail. It is hard to imagine that these elements can't combine with federal expertise developed in forest ecosystem planning and the System Operation Review to provide a fuller conceptual picture of the Columbia River Basin ecosystem.
6....
|
|
iii; 99p.; "Printed for the use of the Committee on Energy and Natural Resources"; Distributed to some depository libraries in microfiche
2024-05-07
2006-11-20 2006-01-31 |
|
The freshwater polychaete Manayunkia speciosa was identified as an obligate host of the salmonid parasite Ceratomyxa shasta in 1997, prompting increased research on the small benthic invertebrate. Ceratomyxa shasta infection in fish can cause...
2012-11-09 (iso8601)
|
|
Fish assemblage structure was determined along a longitudinal
gradient for three drainages in the upper John Day basin: Middle
Fork, South Fork, and upper Mainstem proper. One or two tributaries
in each drainage were included. Where possible,...
1992-06-24 (iso8601)
|
|
measures to reduce human impacts, it does not propose setting aside a stream reach and allowing natural restoration processes to unfold.53
The tribe and-county sent the Wallowa County Salmon Plan to the National Marine Fisheries Service for...
|
|
We analyzed the reproductive biology and demographics of the Lost River sucker Deltistes luxatus and shortnose sucker Chasmistes brevirostris, two endangered species endemic to the upper Klamath Basin of Oregon and California, from 1984-1997. Lost...
2000-10-01
2005-07-18 2005-06-02 |
|
The controversial 2001 U.S. Fish and Wildlife Service water allocation decision in the Klamath Basin has been portrayed as an example of scientific guesswork operating under a flawed Endangered Species Act. This conclusion has been based on an...
2024-05-07
2005-07-05 2005-05-09 |
|
The effects of beaver (Castor canadensis) on stream morphology, riparian zones, and coho salmon (Oncorhynchus kisutch) fry in Cape and Cummins Creeks, Oregon, were examined using stream surveys, vegetation transects, and coho salmon fry counts in...
1989-12-06 (iso8601)
|
|
Natural and gabion modified habitats containing coho salmon
(Oncorhynchus kisutch) were observed and measured seasonally in East
Fork Lobster Creek, a fifth order stream in western Oregon. Coho
salmon usually inhabited backwater and secondary...
1986-05-28 (iso8601)
|
|
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/
2004-06-15
2008-07-22 2006-06-13 |
|
Research on the distribution of juvenile salmonids in streams has been
dominated by studies examining small areas over short periods. However,
information relevant to freshwater influences on population persistence is likely to
derive from...
2001-07-11 (iso8601)
|
|
ecosystem information. For example, the National Marine Fisheries Service, a Department of Commerce agency, is developing a new framework for describing and identifying essential fish habitat under the Magnuson-Stevens Fishery Conservation Act.30...
|
|
We tested the hypothesis that spawning-bed enhancement increases survival and growth of chinook salmon (Oncorhynchus tshawytscha) embryos in a regulated California stream with a gravel deficit. We also examined how 12 physical parameters...
2004-01-01
|
