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Author : David Champlain Love
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.:/5 (839 download)
Download or read book Steelhead Trout Production Studies at Big Ratz Creek, Alaska, 2010-2011 written by David Champlain Love and published by . This book was released on 2013 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David Champlain Love
Publisher :
ISBN 13 :
Total Pages : 46 pages
Book Rating : 4.:/5 (823 download)
Download or read book Steelhead Trout Production Studies at Sitkoh Creek, Alaska, 2007-2008 written by David Champlain Love and published by . This book was released on 2012 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: The need for life history information on steelhead trout Oncorhynchus mykiss irideus in Southeast Alaska prompted a multi-year study that began in 2003 at Sitkoh Creek. The long-term goal of this project is to estimate the number of steelhead smolts produced from a known escapement of adults.
Author : David Champlain Love
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (828 download)
Download or read book Steelhead Trout Production Studies at Sitkoh Creek, Alaska, 2003-2009, and 2009 Final Report written by David Champlain Love and published by . This book was released on 2012 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses the need for life history information on steelhead Oncorhynchus mykiss in Southeast Alaska, which prompted a multi-year study, whereby steelhead adults and smolts were counted through a weir on Sitkoh Creek each spring from April-June, 2003-2009. The ultimate goal of this project was to estimate demographic parameters necessary for describing spawner-recruit relationships such as the number of steelhead smolt produced per spawner.
Author : David Champlain Love
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (262 download)
Download or read book Steelhead Trout Production Studies at Sitkoh Creek, Alaska, 2003-2004 written by David Champlain Love and published by . This book was released on 2008 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The need for life history information on steelhead trout, Oncorhynchus mykiss, in southeast Alaska prompted a multi-year study that began in 2003 at Sitkoh Creek. The long-term goal of this project is to estimate the number of steelhead smolts produced from a known escapement of adults, i.e., smolt per spawner. This information will be combined with data from a steelhead carrying capacity project to lay the foundation for estimating escapement targets. This report summarizes the first 2 years of the multi-year project at Sitkoh Creek (2003 and 2004).
Author : Theodore C. Bjornn
Publisher :
ISBN 13 :
Total Pages : 366 pages
Book Rating : 4.:/5 (15 download)
Download or read book Steelhead Trout Production Studies, Lemhi Big Springs Creek, of Investigations Project F-49-R-4 written by Theodore C. Bjornn and published by . This book was released on 1966 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kercia Schroeder
Publisher :
ISBN 13 :
Total Pages : 42 pages
Book Rating : 4.:/5 (828 download)
Download or read book Steelhead Usable Habitat Area in Southeast Alaska written by Kercia Schroeder and published by . This book was released on 2012 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: To better understand steelhead (Oncorhynchus mykiss) populations and habitat capability in Southeast Alaska, stream habitat and fish use surveys were conducted in Ratz Creek watershed on Prince of Wales Island, Southeast Alaska, from 2009 to 2011. The overall goal of this project was to develop a model to assess the carrying capacity of steelhead in Southeast Alaska streams, based on the relationship between usable habitat area and steelhead production. Ratz Creek was the fourth watershed out of eight to be surveyed for this project. During habitat surveys, the stream network was mapped and individual stream reaches were classified according to fluvial process group and channel type. Several stream reach characteristics were measured, including reach length and channel bed width. Large woody debris and macro-pools were counted to characterize the available habitat. These data have been found to be important indicators of fish habitat in other streams occupied by salmonids, and were used to describe existing conditions of the stream reaches surveyed for this project. Snorkel surveys and minnow traps were used during fish use surveys to identify stream reaches occupied by steelhead. When steelhead were observed in a reach, the channel bed width and reach length were multiplied together to estimate steelhead usable habitat area for that reach. Adult steelhead occupied a total of 10 stream reaches, including reaches in the mainstem and in a significant tributary stream, resulting in a total adult usable habitat area of 9.46 ha. In addition to the reaches occupied by adults, juvenile steelhead were observed in 10 additional reaches, for a combined total of 12.52 ha of usable habitat area. Existing production data for Ratz Creek were used to calculate an estimated 45 adults/ha and 126 smolts/ha of total usable habitat area.
Author : David Champlain Love
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (52 download)
Download or read book Steelhead Trout Production Studies at Sitkoh Creek, Alaska, 2005-2006 written by David Champlain Love and published by . This book was released on 2009 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The need for life history information on steelhead trout Oncorhynchus mykiss in Southeast Alaska prompted a multi-year study that began in 2003 at Sitkoh Creek. The long-term goal of this project is to estimate the number of steelhead smolt produced per spawner. This information will be combined with data from a habitat-based carrying capacity project to estimate escapement targets. This report summarizes the third and fourth years of the Sitkoh Creek project (2005-2006).
Author : Theodore C. Bjornn
Publisher :
ISBN 13 :
Total Pages : 366 pages
Book Rating : 4.:/5 (418 download)
Download or read book Steelhead Trout Production Studies, Lemhi Big Springs Creek written by Theodore C. Bjornn and published by . This book was released on 1966 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David Champlain Love
Publisher :
ISBN 13 :
Total Pages : 70 pages
Book Rating : 4.:/5 (12 download)
Download or read book Manual for Aging Steelhead Trout Scales Based on Scale Sampling from Sitkoh Creek, Big Ratz Creek, and Other Southeast Alaska Streams, 2003-2011 written by David Champlain Love and published by . This book was released on 2016 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: This manual documents methods useful for standardized sampling and aging of steelhead trout (Oncorhynchus mykiss) scales in Southeast Alaska. Steelhead trout scale aging can be a subjective process without standardized methods and criteria for aging and known-age samples for comparison; these methods improve precision and accuracy of estimated ages and overall consistency. Methods and criteria based on observed scale morphology were developed from samples of 2,557 scales collected from resident parr, emigrant smolt, and migratory rainbow trout, and also from 2,315 immigrant adult steelhead trout collected from several different locations in Southeast Alaska from 2003 to 2011. Typical scale characteristics used to age steelhead trout include identification of first annulus, interpretation of plus growth, representative circuli counts and fork length criteria for estimating smolt ages, and comparison to morphology from known-aged adult samples. Characteristics of regenerated scales, spawning checks, false checks, and plus-growth useful for interpretation of scale morphology are also discussed. Variable life history of steelhead trout as related to scale morphology is discussed. Steelhead trout juvenile and smolt scale aging methods for freshwater life history include triplicate reads, use of criteria to improve precision, and aging practice from validated smolt scales. Expected scale morphology for the marine portion of adult steelhead trout scales collected from known ocean-age fish is presented. Methods for evaluating scale aging consistency through testing within-reader precision (repeatability), and between-reader relative accuracy are suggested. Annotated images of representative scale samples from parr, smolt, and adult steelhead trout are provided for reference as is a list of known-age, or matching-age scale, images to be used for training. Standardizing protocols and criteria used to age Southeast Alaska steelhead trout scales along with methods to evaluate technician performance are suggested as a means to ensure consistency and continuity in aging methods for future scale aging of steelhead trout in Southeast Alaska.
Author : Theodore C. Bjornn
Publisher :
ISBN 13 :
Total Pages : 62 pages
Book Rating : 4.:/5 (418 download)
Download or read book Steelhead Trout Production Studies, Lemhi Big Springs Creek written by Theodore C. Bjornn and published by . This book was released on 1969 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Alaska. Division of Sport Fish
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (417 download)
Download or read book A Study of Cutthroat Steelhead in Southeast Alaska written by Alaska. Division of Sport Fish and published by . This book was released on 19?? with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kelly Piazza
Publisher :
ISBN 13 :
Total Pages : 42 pages
Book Rating : 4.:/5 (496 download)
Download or read book Assessment of Adult Steelhead Populations on Prince of Wales Island, Alaska written by Kelly Piazza and published by . This book was released on 2009 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report discusses weir captures of adult steelhead, Oncorhynchus mykiss, in the Big Ratz Creek and Natzuhini Creek on Prince of Wales Island, Southeast Alaska. Includes information on the escapement, run timing, composition, and the relationship between snorkel surveys and weir counts of adult steelhead for the development of expansion factors.
Author : Brian Marston
Publisher :
ISBN 13 :
Total Pages : 27 pages
Book Rating : 4.:/5 (957 download)
Download or read book Steelhead Studies from the Situk River in Southeast Alaska, 2009-2011 written by Brian Marston and published by . This book was released on 2016 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: As a continuation of a monitoring project begun in 1994, a bipod and picket weir was used to count and sample steelhead Oncorhynchus mykiss kelts emigrating from the Situk River in Southeast Alaska from 2009 to 2011. Counts were 7,302, 5,335, and 7,458, emigrating kelts for 2009-2011 respectively. The 2009-2011 counts were below the long term (18 years: 1994-2011) average of 8,487 (-21%), and represent a 60% drop off the recent peak counts (10-15,000) seen within the last decade, but they were similar or above the previous low counts recorded historically (
Author :
Publisher :
ISBN 13 :
Total Pages : 674 pages
Book Rating : 4.:/5 (319 download)
Download or read book Canadian Journal of Fisheries and Aquatic Sciences written by and published by . This book was released on 2014 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Julie Koppel Maldonado
Publisher : Springer
ISBN 13 : 3319052667
Total Pages : 178 pages
Book Rating : 4.3/5 (19 download)
Download or read book Climate Change and Indigenous Peoples in the United States written by Julie Koppel Maldonado and published by Springer. This book was released on 2014-04-05 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: With a long history and deep connection to the Earth’s resources, indigenous peoples have an intimate understanding and ability to observe the impacts linked to climate change. Traditional ecological knowledge and tribal experience play a key role in developing future scientific solutions for adaptation to the impacts. The book explores climate-related issues for indigenous communities in the United States, including loss of traditional knowledge, forests and ecosystems, food security and traditional foods, as well as water, Arctic sea ice loss, permafrost thaw and relocation. The book also highlights how tribal communities and programs are responding to the changing environments. Fifty authors from tribal communities, academia, government agencies and NGOs contributed to the book. Previously published in Climatic Change, Volume 120, Issue 3, 2013.
Download or read book Backpacker written by and published by . This book was released on 2007-09 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Backpacker brings the outdoors straight to the reader's doorstep, inspiring and enabling them to go more places and enjoy nature more often. The authority on active adventure, Backpacker is the world's first GPS-enabled magazine, and the only magazine whose editors personally test the hiking trails, camping gear, and survival tips they publish. Backpacker's Editors' Choice Awards, an industry honor recognizing design, feature and product innovation, has become the gold standard against which all other outdoor-industry awards are measured.
Author : Robert A. Francis
Publisher : Routledge
ISBN 13 : 1136461248
Total Pages : 918 pages
Book Rating : 4.1/5 (364 download)
Download or read book A Handbook of Global Freshwater Invasive Species written by Robert A. Francis and published by Routledge. This book was released on 2012-03-12 with total page 918 pages. Available in PDF, EPUB and Kindle. Book excerpt: Invasive non-native species are a major threat to global biodiversity. Often introduced accidentally through international travel or trade, they invade and colonize new habitats, often with devastating consequences for the local flora and fauna. Their environmental impacts can range from damage to resource production (e.g. agriculture and forestry) and infrastructure (e.g. buildings, road and water supply), to human health. They consequently can have major economic impacts. It is a priority to prevent their introduction and spread, as well as to control them. Freshwater ecosystems are particularly at risk from invasions and are landscape corridors that facilitate the spread of invasives. This book reviews the current state of knowledge of the most notable global invasive freshwater species or groups, based on their severity of economic impact, geographic distribution outside of their native range, extent of research, and recognition of the ecological severity of the impact of the species by the IUCN. As well as some of the very well-known species, the book also covers some invasives that are emerging as serious threats. Examples covered include a range of aquatic and riparian plants, insects, molluscs, crustacea, fish, amphibians, reptiles and mammals, as well as some major pathogens of aquatic organisms. The book also includes overview chapters synthesizing the ecological impact of invasive species in fresh water and summarizing practical implications for the management of rivers and other freshwater habitats.
