Download or read book Takotna River Salmon Studies 2008 written by Travis B. Elison and published by . This book was released on 2009 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Takotna River weir has operated since 2000 to estimate the abundance and age-sex-length compositions of salmon escapements, monitor environmental variables, and facilitate other Kuskokwim Area fisheries projects. In 2008, a resistance-board weir was operated in the Takotna River from 20 June through 23 September to estimate escapements of 4 species of pacific salmon Oncorhynchus spp. The Takotna River weir is one of several components that form an integrated array of escapement monitoring projects in the Kuskokwim Area. This array of projects provides a means to monitor and assess escapement trends that must be considered in harvest management decisions in accordance with the State of Alaska's Policy for the Management of Sustainable Salmon Fisheries (5 AAC 39.222).
Download or read book Takotna River Salmon Studies 2006 written by Daniel J. Costello and published by . This book was released on 2007 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Takotna River is a major tributary of the Kuskokwim River that currently supports modest runs of Pacific salmon, Oncorhynchus spp., compared to other tributaries in the drainage. The Takotna River weir is one of several projects operated in the Kuskokwim area that form an integrated geographic array of escapement monitoring projects. Collectively, and in accordance with the State of Alaska's Policy for the Management of Sustainable Salmon Fisheries (5 AAC 39.222), this array of projects is a tool to ensure appropriate geographic and temporal distribution of spawners, and provide a means to assess trends in escapement that should be monitored and considered in harvest management decisions. Towards this end, Takotna River weir has been operated annually since 2000 to determine daily and total salmon escapements for the target operational period of 24 June through 20 September; to estimate age, sex, and length compositions of chinook, chum, and coho salmon escapement; to monitor environmental variables that influence salmon productivity; to investigate geographic distribution and length patterns of juvenile chinook and coho salmon in the Takotna River drainage; and to provide part of an integrated platform in support of other Kuskokwim area fisheries projects.
Download or read book Takotna River Salmon Studies 2005 written by Daniel J. Costello and published by . This book was released on 2006 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Takotna River is a major tributary of the Kuskokwim River that currently supports modest runs of Pacific salmon, Oncorhynchus spp., compared to other tributaries in the drainage. The Takotna River weir is one of several projects operated in the Kuskokwim Area that form an integrated geographic array of escapement monitoring projects. Collectively, and in accordance with the State of Alaska's Policy for the Management of Sustainable Salmon Fisheries (5 AAC 39.222), this array of projects is a tool to ensure appropriate geographic and temporal distribution of spawners, and provide a means to assess trends in escapement that should be monitored and considered in harvest management decisions. Towards this end, Takotna River weir has been operated annually since 2000 to determine daily and total salmon escapements for the target operational period of 24 June through 20 September; to estimate age, sex, and length compositions of Chinook O. tshawytscha, chum O. keta, and coho O. kisutch salmon escapement; to monitor environmental variables that influence salmon productivity; to investigate geographic distribution and length patterns of juvenile chinook and coho salmon in the Takotna River drainage; and to provide part of an integrated platform in support of other Kuskokwim Area fisheries projects.
Download or read book Takotna River Salmon Studies 2007 written by Daniel J. Costello and published by . This book was released on 2008 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Takotna River is a tributary of the upper Kuskokwim River that supports runs of Pacific salmon Oncorhynchus spp. A weir operated on the Takotna River is one of several projects operated in the Kuskokwim Area that form an integrated geographic array of escapement monitoring projects. Collectively, and in accordance with the State of Alaska's Policy for the Management of Sustainable Salmon Fisheries (5 AAC 39.222), this array of projects is a tool to ensure appropriate geographic and temporal distribution of spawners, and provides a means to track trends in escapement that should be monitored and considered in harvest management decisions. To this end, Takotna River weir has been operated annually since 2000 to determine daily and total salmon escapements; to estimate age, sex, and length compositions of Chinook, chum, and coho salmon escapement; to monitor environmental variables that influence salmon productivity; and to serve as part of an integrated platform in support of other Kuskokwim Area fisheries projects.
Download or read book Takotna River Salmon Studies 2009 written by Robert L. Stewart and published by . This book was released on 2010 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Takotna River, a tributary of the Kuskokwim River, produces Chinook Oncorhynchus tshawytscha, chum O. keta, and coho salmon O. kisutch that contribute to subsistence and commercial salmon fisheries downstream of its confluence. A weir has been operated annually on the Takotna River since 2000, and is part of an array of projects used to monitor salmon escapement in the Kuskokwim River drainage. In 2009, a resistance-board weir was operated in the Takotna River from 24 June to 20 September. Salmon were enumerated by species as they migrated through the weir to determine daily and annual escapements. Samples were collected to estimate the age, sex, and length composition of escapements using a live trap.
Download or read book Takotna River Salmon Studies 2011 written by Derick L. Williams and published by . This book was released on 2013 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Takotna River is a tributary of the Kuskokwim River. A weir has been operated annually on the Takotna River since 2000 to monitor returning Chinook Oncorhynchus tshawytscha, chum O. keta, and coho O. kisutch salmon. Salmon were enumerated by species as they migrated through the weir to determine daily and annual escapements. Samples were collected to estimate the age, sex, and length composition of escapements using a live trap.
Download or read book Takotna River Salmon Studies 2004 written by Daniel J. Costello and published by . This book was released on 2005 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Takotna River Salmon Studies 2010 written by Tracy R. Hansen and published by . This book was released on 2011 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Takotna River, a tributary of the Kuskokwim River, produces Chinook Oncorhynchus tshawytscha, chum O. keta, and coho salmon O. kisutch that contribute to subsistence and commercial salmon fisheries downstream of its confluence. A weir has been operated annually on the Takotna River since 2000, and is part of an array of projects used to monitor salmon escapement in the Kuskokwim River drainage. In 2010, salmon were enumerated by species as they migrated through the weir to determine daily and annual escapements. Samples were collected to estimate the age, sex, and length composition of escapements using a live trap.
Download or read book Takotna River Salmon Studies and Upper Kuskokwim River Aerial Surveys 2001 written by Corey J. Schwanke and published by . This book was released on 2002 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Takotna River Salmon Studies and Upper Kuskokwim River Aerial Surveys 2003 written by Sara Ellen Gilk and published by . This book was released on 2004 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tatlawiksuk River Salmon Studies 2008 written by Travis B. Elison and published by . This book was released on 2009 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Tatlawiksuk River weir has operated since 1998 to estimate the return and age-sex-length compositions of salmon escapements, monitor environmental variables, and facilitate other Kuskokwim Area fisheries projects. In 2008, a resistance board weir was operated in the Tatlawiksuk River from 15 June through 18 September to estimate escapements of 3 species of Pacific salmon Oncorhynchus spp. The Tatlawiksuk River weir is one of several components, which form an integrated array of escapement monitoring projects in the Kuskokwim Area. This array of projects provides a means to monitor and assess escapement trends that must be considered in harvest management decisions in accordance with the State of Alaska's Policy for the Management of Sustainable Salmon Fisheries (5 AAC 39.222).
Download or read book The Segregation of Red Salmon in the Escapements to the Kvichak River System Alaska written by H. D. Smith and published by . This book was released on 1964 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Takotna River Salmon Counting Tower Project Summary 1995 1999 written by Douglas B. Molyneaux and published by . This book was released on 2000 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tatlawiksuk River Salmon Studies 2011 written by LaDonn M. Robbins and published by . This book was released on 2013 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Tatlawiksuk River is a tributary of the Kuskokwim River and produces Chinook Oncorhynchus tshawytscha, chum O. keta, and coho salmon O. kisutch, which contribute to subsistence and commercial salmon fisheries of the Kuskokwim River. The Tatlawiksuk River weir has operated since 1998 to estimate the return and age-sex-length compositions of salmon escapements, monitor environmental variables, and facilitate other Kuskokwim Area fisheries projects. In 2011, a resistance board weir was operated from June 15 to September 19 to estimate escapements of three species of Pacific salmon.
Download or read book Tatlawiksuk River Salmon Studies 2010 written by Joshua Clark and published by . This book was released on 2011 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Tatlawiksuk River is a major tributary of the Kuskokwim River and produces Chinook salmon Oncorhynchus tshawytscha, chum salmon O. keta, and coho salmon O. kisutch, which contribute to subsistence and commercial salmon fisheries of the Kuskokwim River. The Tatlawiksuk River weir has operated since 1998 to estimate the return and age-sex-length compositions of salmon escapements, monitor environmental variables, and facilitate other Kuskokwim Area fisheries projects. In 2010, a resistance board weir was operated from 17 June to 17 September to estimate escapements of 3 species of Pacific salmon. The Tatlawiksuk River weir is one of several components which form an integrated array of escapement monitoring projects in the Kuskokwim Area. This array of projects provides a means to monitor and assess escapement trends that must be considered in harvest management.
Download or read book Upstream written by Committee on Protection and Management of Pacific Northwest Anadromous Salmonids and published by National Academies Press. This book was released on 1996-07-31 with total page 473 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of salmon to the Pacific Northwest--economic, recreational, symbolic--is enormous. Generations ago, salmon were abundant from central California through Idaho, Oregon, and Washington to British Columbia and Alaska. Now they have disappeared from about 40 percent of their historical range. The decline in salmon numbers has been lamented for at least 100 years, but the issue has become more widespread and acute recently. The Endangered Species Act has been invoked, federal laws have been passed, and lawsuits have been filed. More than $1 billion has been spent to improve salmon runs--and still the populations decline. In this new volume a committee with diverse expertise explores the complications and conflicts surrounding the salmon problem--starting with available data on the status of salmon populations and an illustrative case study from Washington state's Willapa Bay. The book offers specific recommendations for salmon rehabilitation that take into account the key role played by genetic variability in salmon survival and the urgent need for habitat protection and management of fishing. The committee presents a comprehensive discussion of the salmon problem, with a wealth of informative graphs and charts and the right amount of historical perspective to clarify today's issues, including Salmon biology and geography--their life's journey from fresh waters to the sea and back again to spawn, and their interaction with ecosystems along the way. The impacts of human activities--grazing, damming, timber, agriculture, and population and economic growth. Included is a case study of Washington state's Elwha River dam removal project. Values, attitudes, and the conflicting desires for short-term economic gain and long-term environmental health. The committee traces the roots of the salmon problem to the extractive philosophy characterizing management of land and water in the West. The impact of hatcheries, which were introduced to build fish stocks but which have actually harmed the genetic variability that wild stocks need to survive. This book offers something for everyone with an interest in the salmon issue--policymakers and regulators in the United States and Canada; environmental scientists; environmental advocates; natural resource managers; commercial, tribal, and recreational fishers; and concerned residents of the Pacific Northwest.
Download or read book Tatlawiksuk River Salmon Studies 2007 written by Robert L. Stewart and published by . This book was released on 2008 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Tatlawiksuk River is a tributary of the Kuskokwim River, and produces Chinook salmon Oncorhynchus tshawytscha, chum salmon O. keta, and coho salmon O. kisutch that contribute to important subsistence and commercial salmon fisheries downstream of its confluence. The Tatlawiksuk River weir is one of several projects operated in the Kuskokwim Area that form an integrated geographic array of escapement monitoring projects. Collectively, and in accordance with the State of Alaska's Policy for the Management of Sustainable Salmon Fisheries (5 AAC 39.222), this array of projects is a tool used to ensure appropriate geographic and temporal distribution of spawners, and provide a means to assess trends in escapement that should be monitored and considered in harvest management decisions. Towards this end, Tatlawiksuk River weir has been operated annually since 1998 to determine daily and total salmon escapements for the target operational period of 15 June through 20 September; to estimate age, sex, and length compositions of Chinook, chum, and coho salmon escapement; to monitor environmental variables that influence salmon productivity; and to serve as part of an integrated platform in support of other Kuskokwim Area fisheries projects. In 2007, a resistance board weir was successfully operated on the Tatlawiksuk River from 15 June through 15 September, at which time anticipated high water levels necessitated early removal of the weir. Daily passage estimates were calculated to span the remainder of the target operational period. This report details the 2007 findings.
