Download or read book Encounter and Release Rates for Salmonids Birds and Marine Mammals in the Marine Sport Salmon Fishery in Puget Sound Washington written by Donald T. Noviello and published by . This book was released on 1999 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Encounter and Release Rates for Salmonids Birds and Marine Mammals in the Marine Sport Fishery in Puget Sound Washington written by Donald T. Noviello and published by . This book was released on 1999 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Federal Register written by and published by . This book was released on 1976 with total page 2184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estimating the Harvest of Salmon by the Marine Sport Fishery in Puget Sound written by Robert Harvey Conrad and published by . This book was released on 1993 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recreational Uses Production and Management of Anadromous Pacific Salmonids written by and published by . This book was released on 1985 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Migration and Residence Patterns of Salmonids in Puget Sound Washington written by Frederick A. Goetz and published by . This book was released on 2016 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall period of marine residence was similar among fish from different river basins and life stages; larger bull trout entered marine waters in late winter-early spring, juveniles in late spring, and most fish migrated back into rivers by late spring-early summer as temperatures were increasing. However, the timing of return migration was similar among rivers despite differences in their thermal regimes. Some fish entered and exited the rivers in the fall but few overwintered in marine areas. Most fish occupied estuary and nearshore areas near natal rivers but some moved over 100 km from the river mouth. These timing patterns and use of marine habitats contrast strongly with those of other salmonids in Puget Sound, revealing the diversity in migratory behavior under the broad category of anadromy, and emphasizing the importance of estuarine and nearshore habitats for the conservation of bull trout, listed as Threatened under the U. S. Endangered Species Act. Behavioral thermoregulation by adult Chinook salmon (Oncorhynchus tshawytscha) and comparison to sockeye salmon (O. nerka) in estuary and freshwater habitats prior to spawning The movements and thermal experience of Pacific salmon during their homeward migration through marine waters and into freshwater systems pose challenges for their physiology, especially in river basins altered by human structures and activities, and under regimes of increasingly high temperatures. This study determined the thermal regimes experienced by maturing Chinook salmon, Oncorhynchus tshawytscha, entering the Lake Washington basin via a navigational locks and canal, and migrating through the lake to spawning grounds or hatcheries. We then compared these patterns, determined from a combination of acoustic tracking and temperature loggers attached to the fish, with comparable data on sockeye salmon collected in an independent study in overlapping years. Chinook salmon exhibited complex patterns, occupying cool water refuges in stratified marine and freshwater areas: 1) in Puget Sound (28-30 ppt, 12-15 oC), 2) in deeper water in the salt wedge (upper estuary) above the locks (12-15 ppt, 18-21 oC), and 3) intermittently in deeper fresh water in Lake Washington (9-21 oC). Most Chinook salmon (> 75%) left the estuary after tagging and spent a short period (mean 4.6 d) in Puget Sound). Upon return to the upper estuary Chinook salmon either held in a small, cool area in the salt wedge (mean 11.1 d) or went back to Puget Sound twice to hold in tidally influenced saltwater. Sockeye salmon exhibited a fairly simple migration pattern, holding for a short period in warm water (median 18.4 oC) in the upper estuary and canal (mean 3.6 d), then migrating to the lake and residing in cold-water areas (mean 10.3 oC) at depths of 40 m (mean 88.3 d). Sockeye and Chinook salmon travelled through a 10.8 km canal to Lake Washington in relatively short periods, 2 d and 0.5 d (mean) respectively, but Chinook salmon experienced higher temperatures (20-22.5 oC) because they migrated later in summer. In Lake Washington Chinook salmon exhibited vertical migrations above and below the thermocline and used the lake as a thermal refuge to a lesser extent than did sockeye salmon, which remained below the thermocline almost exclusively until they ascended rivers to spawn. Individual fish utilized different migration paths and so had distinct thermal experiences but survived to reach breeding sites. The ability to exploit multiple refuges in this highly modified migratory corridor may be essential for the persistence of these species and especially the Chinook salmon. In the face of climate change, understanding how fish use available thermal refuges may help identify management alternatives to retain or increase these areas in the future.
Download or read book EIS Cumulative written by and published by . This book was released on 1980 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reduction of Seabird Bycatch in Salmon Drift Gillnet Fisheries written by Edward F. Melvin and published by . This book was released on 1996 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1979 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Cormorant fisherman Conflict in Tillamook County Oregon written by Range D. Bayer and published by . This book was released on 1989 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Marine Birds written by Pacific Seabird Group and published by Canadian Wildlife Service. This book was released on 1984 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: The papers presented in this document are listed under threeparts: Feeding ecology of marine waterfowl, Feeding ecology ofpelagic marine birds, and Commercial fisheries interactions.
Download or read book EIS Key to Environmental Statements written by and published by . This book was released on 1978 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Angler Expenditures in the Puget Sound Salmon Sport Fishery written by Ronnie E. Gowan and published by . This book was released on 1977 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Final Environmental Statement written by United States. Bureau of Land Management and published by . This book was released on 1979 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Incidental Take and Interactions of Marine Mammals and Birds in the Kodiak Island Salmon Gillnet Fishery 2002 and 2005 written by Bryan F. J. Manly and published by . This book was released on 2007 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estimated Numbers of Salmon Hooked and Released by Washington s Commercial Troll and Ocean Sport Fisheries in 1970 1971 written by Sam Wright and published by . This book was released on 1972 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Shifting Gears written by Lance Edward Morgan and published by . This book was released on 2003 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
