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Biological Characteristics And Population Status Of Steelhead Oncorhynchus Mykiss In Southeast Alaska
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Book Synopsis Biological Characteristics and Population Status of Steelhead (Oncorhynchus Mykiss) in Southeast Alaska by : Samuel Clark Lohr
Download or read book Biological Characteristics and Population Status of Steelhead (Oncorhynchus Mykiss) in Southeast Alaska written by Samuel Clark Lohr and published by . This book was released on 1999 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biological Charactieristics and Population Status of Steelhead (Oncorhynchus Mykiss) in Southeast Alaska by : Samuel C. Lohr
Download or read book Biological Charactieristics and Population Status of Steelhead (Oncorhynchus Mykiss) in Southeast Alaska written by Samuel C. Lohr and published by . This book was released on 1999 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis BIOLOGICAL CHARACTERISTICS AND POPULATION STATUS OF STEELHEAD (ONCORHYNCHUS MYKISS) IN SOUTHEAST..., GENERAL TECHNICAL REPORT PNW-GTR-407 by : United States. Forest Service
Download or read book BIOLOGICAL CHARACTERISTICS AND POPULATION STATUS OF STEELHEAD (ONCORHYNCHUS MYKISS) IN SOUTHEAST..., GENERAL TECHNICAL REPORT PNW-GTR-407 written by United States. Forest Service and published by . This book was released on 1999* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis General Technical Report PNW-GTR by :
Download or read book General Technical Report PNW-GTR written by and published by . This book was released on 1999 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advances in the Ecology of Stream-Dwelling Salmonids by : Javier Lobon-Cervia
Download or read book Advances in the Ecology of Stream-Dwelling Salmonids written by Javier Lobon-Cervia and published by Springer Nature. This book was released on with total page 733 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Lake Tahoe Watershed Assessment: Appendixes by :
Download or read book Lake Tahoe Watershed Assessment: Appendixes written by and published by . This book was released on 2000 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Variation in Salmonid Life Histories by : Mary F. Willson
Download or read book Variation in Salmonid Life Histories written by Mary F. Willson and published by . This book was released on 1997 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Paper PNW. written by and published by . This book was released on 1978 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Early Marine Growth Patterns of Situk River Steelhead, Oncorhynchus Mykiss by : Matthew R. Catterson
Download or read book Early Marine Growth Patterns of Situk River Steelhead, Oncorhynchus Mykiss written by Matthew R. Catterson and published by . This book was released on 2017 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Steelhead Oncorhynchus mykiss exhibit complex life-history patterns described by variable freshwater and marine residency periods, maturation patterns, and reproductive characteristics. Over 300 small populations of Steelhead are present in Southeast Alaska, and similar trends in abundance among these populations suggest the influence of population-regulating forces operating on a regional scale. The Situk River, near Yakutat, Alaska, supports the largest known population of Steelhead in Alaska. Stock assessment studies on this river have collected the longest set of biological data and scale samples for Steelhead in the state. For this study, retrospective scale pattern analysis of samples from Situk River Steelhead was synthesized with regional abundance information to investigate patterns in early marine growth among different life-history and demographic groups, as well as to explore linkages between growth, abundance, and marine environmental variables. Positive correlations were identified between freshwater growth, first ocean-year growth, and adult length, while first ocean-year growth was negatively correlated with second ocean-year growth. Early maturing Steelhead were found to have increased first ocean-year growth and reduced adult length relative to later maturing Steelhead, confirming connections between growth and maturation. Correlations in abundance among Southeast Alaska Steelhead populations suggest that marine and climatic drivers may impact these populations in a regionally coherent manner. Correlations among patterns in abundance also varied along a distance gradient: populations located closer to the Situk River were more correlated with the Situk River than more distant populations. Positive relationships between Gulf of Alaska sea surface temperature, North Pacific Gyre Oscillation, and Situk River Steelhead abundance further supported the importance of climate-driven marine conditions to Steelhead productivity. While conservation concerns for Steelhead in Southeast Alaska are currently minimal, proactive investigations into life-history diversity and population linkages may become more relevant with increased marine ecosystem variability related to climate change.
Book Synopsis Monthly Catalog of United States Government Publications by :
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1999-07 with total page 1154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Relevant Literature for an Evaluation of the Effectiveness of the Alaska Forest Resources and Practices Act by :
Download or read book Relevant Literature for an Evaluation of the Effectiveness of the Alaska Forest Resources and Practices Act written by and published by . This book was released on 2005 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Protocol Using Coho Salmon to Monitor Tongass National Forest Land and Resource Management Plan Standards and Guidelines for Fish Habitat by : Mason D. Bryant
Download or read book A Protocol Using Coho Salmon to Monitor Tongass National Forest Land and Resource Management Plan Standards and Guidelines for Fish Habitat written by Mason D. Bryant and published by . This book was released on 2008 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: We describe a protocol to monitor the effectiveness of the Tongass Land Management Plan (TLMP) management standards for maintaining fish habitat. The protocol uses juvenile coho salmon (Oncorhynchus kisutch) in small tributary streams in forested watersheds. We used a 3-year pilot study to develop detailed methods to estimate juvenile salmonid populations, measure habitat, and quantitatively determine trends in juvenile coho salmon abundance over 10 years. Coho salmon have been shown to be sensitive to habitat alterations, and we use coho salmon parr as the primary indicator in the protocol. A priori criteria for type I and type II error rates, effect size, and sample sizes for the protocol were derived with estimates of variance computed from the 3-year pilot study. The protocol is designed to detect trends in abundance of coho salmon parr, as well as coho salmon fry and Dolly Varden (Salvelinus malma), in small streams managed according to TLMP standards and guidelines and to compare these to trends in unmanaged (old-growth) watersheds. Trends are adjusted to account for statistically significant habitat covariates. This information provides an important element in monitoring land management practices in the Tongass National Forest. The methods we describe may have application to monitoring protocols elsewhere for fish populations and land management practices.
Book Synopsis Steelhead Usable Habitat Area in Southeast Alaska by : Kercia Schroeder
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.
Book Synopsis Canadian Journal of Fisheries and Aquatic Sciences by :
Download or read book Canadian Journal of Fisheries and Aquatic Sciences written by and published by . This book was released on 2011 with total page 774 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General Technical Report PSW. written by and published by . This book was released on 1978 with total page 1188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Steelhead, Oncorhynchus Mykiss, Creel Census on the Klawock River, Southeast Alaska, 1987-1988 by : Glenn M. Freeman
Download or read book Steelhead, Oncorhynchus Mykiss, Creel Census on the Klawock River, Southeast Alaska, 1987-1988 written by Glenn M. Freeman and published by . This book was released on 1989 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1999 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt:
