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.
Download or read book Scale Aging Manual for Coastal Cutthroat Trout from Southeast Alaska written by Randolph P. Ericksen and published by . This book was released on 1999 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook for Interpretation of Steelhead Trout Scales in Southeast Alaska written by Darwin E. Jones and published by . This book was released on 1983* with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses how to determine the age of a steelhead trout based on the interpretation of its scales.
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).
Download or read book Age Growth and Life History of Klamath River Basin Steelhead Trout Oncorhynchus Mykiss Irideus as Determined from Scale Analysis written by James S. Hopelain and published by . This book was released on 1998 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Mantle Site written by Jennifer Birch and published by AltaMira Press. This book was released on 2012-12-27 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first detailed analysis of a completely excavated northern Iroquoian community, a sixteenth-century ancestral Wendat village on the north shore of Lake Ontario. The site resulted from the coalescence of multiple small villages into one well-planned and well-integrated community. Jennifer Birch and Ronald F. Williamson frame the development of this community in the context of a historical sequence of site relocations. The social processes that led to its formation, the political and economic lives of its inhabitants, and their relationships to other populations in northeastern North America are explored using multiple scales of analysis. This book is key for those interested in the history and archaeology of eastern North America, the social, political, and economic organization of Iroquoian societies, the archaeology of communities, and processes of settlement aggregation.
Download or read book Hemlock Dwarf Mistletoe written by Paul E. Hennon and published by . This book was released on 2001 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hemlock Dwarf Mistletoe written by and published by . This book was released on 1983 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Indian Women and French Men written by Susan Sleeper-Smith and published by . This book was released on 2001 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
