Download or read book Assessment of a Dual frequency Identification Sonar DIDSON for Application in Fish Migration Studies written by Lee J. Baumgartner and published by . This book was released on 2005 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of a Dual frequency Imaging Sonar for Detecting and Estimating the Size of Migrating Salmon written by Debby L. Burwen and published by . This book was released on 2007 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experiments were conducted with a DIDSON (Dual frequency IDentification SONar) acoustic system to evaluate the potential for estimating fish size from images of tethered and free-swimming fish in two Alaskan rivers.

Download or read book Fish Population Dynamics Monitoring and Management written by Ichiro Aoki and published by Springer. This book was released on 2018-05-22 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores how we can solve the urgent problem of optimizing the use of variable, uncertain but finite fisheries resources while maintaining sustainability from a marine-ecosystem conservation perspective. It offers readers a broad understanding of the current methods and theory for sustainable exploitation of fisheries resources, and introduces recent findings and technological developments. The book is divided into three parts: Part I discusses fish stock dynamics, and illustrates how ecological processes affecting life cycles and biological interactions in marine environments lead to fish stock variability in space and time in major fish groups; small pelagic fish, demersal fish and large predatory fish. These insights shed light on the mechanisms underlying the variability in fish stocks and form the essential biological basis for fisheries management. Part II addresses the technologies and systems that monitor changes in fisheries resources and marine ecosystems using two approaches: fishery-dependent and fishery-independent data. It also describes acoustic surveys and biological sampling, as well as stock assessment methods. Part III examines management models for effectively assessing the natural variability in fisheries resources. The authors explore ways of determining the allowable catch in response to changes in stock abundance and how to incorporate ecological processes and monitoring procedures into management models. This book offers readers a broad understanding of sustainable exploitation as well as insights into fisheries management for the next generation.

Download or read book Ecology of Australian Freshwater Fishes written by Paul Humphries and published by CSIRO PUBLISHING. This book was released on 2013-04-10 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edited volume reviews our past and present understanding of the ecology of Australian freshwater fishes. It compares patterns and processes in Australia with those on other continents, discusses the local relevance of ecological models from the northern hemisphere and considers how best to manage our species and their habitats in the face of current and future threats. In view of these challenges, the need for redress is urgent. The chapters are written by some of our foremost researchers and managers, developing themes that underpin our knowledge of the ecology, conservation and management of fish and fish habitats. For each theme, the authors formulate a synthesis of what is known, consider the need for new perspectives and identify gaps and opportunities for research, monitoring and management. The themes have an Australian context but draw upon ideas and principles developed by fish biologists in other parts of the world. The science of freshwater fish ecology in Australia has grown rapidly from its roots in natural history and taxonomy. This book offers an introduction for students, researchers and managers, one that the authors hope will carry Australian fish biology and resource management to new levels of understanding.

Download or read book Ask Explore Write written by Troy Hicks and published by Routledge. This book was released on 2020-02-12 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discover how to effectively incorporate literacy instruction into your middle or high school science classroom with this practical book. You’ll find creative, inquiry-based tools to show you what it means to teach science with and through writing, and strategies to help your students become young scientists who can use reading and writing to better understand their world. Troy Hicks, Jeremy Hyler, and Wiline Pangle share helpful examples of lessons and samples of students’ work, as well as innovative strategies you can use to improve students’ abilities to read and write various types of scientific nonfiction, including argument essays, informational pieces, infographics, and more. As all three authors come to the work of science and literacy from different perspectives and backgrounds, the book offers unique and wide-ranging experiences that will inspire you and offer you insights into many aspects of the classroom, including when, why, and how reading and writing can work in the science lesson. Featured topics include: Debates and the current conversation around science writing in the classroom and society. How to integrate science notebooks into teaching. Improving nonfiction writing by expanding disciplinary vocabulary and crafting scientific arguments. Incorporating visual explanations and infographics. Encouraging collaboration through whiteboard modeling. Professional development in science and writing. The strategies are all aligned to the Next Generation Science Standards and Common Core State Standards for ease of implementation. From science teachers to curriculum directors and instructional supervisors, this book is essential for anyone wanting to improve interdisciplinary literacy in their school.

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:

Download or read book Use of Dual frequency Identification Sonar to Verify Split beam Estimates of Salmon Flux and to Examine Fish Behaviour in the Fraser River written by Yunbo Xie and published by . This book was released on 2005 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Dual Frequency Identification Sonar DIDSON for Monitoring Pacific Lamprey Passage Behavior at Fishways of Bonneville Dam 2011 written by Eric L. Johnson and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Journal of the Acoustical Society of America written by Acoustical Society of America and published by . This book was released on 2005 with total page 1064 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Aiming Protocol for Fish counting Sonars Using River Bottom Profiles from a Dual frequency Identification Sonar DIDSON written by April V. Faulkner and published by . This book was released on 2009 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report discusses the results of estimating fish abundance in Alaska rivers using Dual-frequency Identification Sonar (DIDSON) technology.

Download or read book Marine Freshwater Research written by and published by . This book was released on 1995 with total page 774 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Salmonid Field Protocols Handbook written by David H. Johnson and published by . This book was released on 2007 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first publication to collect, standardize, and recommend a scientifically rigorous set of field protocols for monitoring and assessing salmon and trout populations. Includes five additional techniques that can be used with any of the 13 principle methods to supplement information gathered.Over four dozen fisheries experts throughout the U.S. Pacific Northwest and beyond contributed their time to pick, write, and review the most reliable protocols for enumerating salmonids in the field. Presented in an easy to use format, each of the 18 peer-reviewed protocols covers objectives, sample design, data handling, personnel and operational requirements, and field and office techniques, including survey forms.Standardized monitoring protocols will improve data reliability, maximize opportunities for data sharing and data set comparability, and ultimately improve the ability to assess status and trends. The Handbook will also support consistency in data collection for salmonids at the international level.

Download or read book An Approach for Use of Dual Frequency Identification Sonar DIDSON to Quantify Behavioral Aspects of Piscivory at Ecologically Relevant Time and Space Scales written by Victoria Price and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Migration of Freshwater Fishes written by Martyn Lucas and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent studies have increasingly demonstrated the widespread existence of spatio-temporal variations in the abundance and distribution of species of freshwater fishes, previously assumed not to move between habitats. These movements are often on a seasonal or ontogenetic basis, for spawning, feeding and refuge, and in many cases are fundamental for the successful completion of lifecycles. This important book provides a single source for a range of previously widely dispersed information on these movements of fish in fresh waters, covering potamodromous fishes as well as the more familiar diadromous species, worldwide. Contents include full descriptions of types of migration and spatial behaviour, the stimulus and capacity for fish to migrate, the effects of climate on patterns of migratory behaviour, a taxonomic analysis (mostly by family) of freshwater fish migration, methods for studying migration, and details of the impacts of man's activities on freshwater fish migration. Migration of Freshwater Fishes provides an excellent and comprehensive reference to which the river manager, biologist or student can now refer to obtain information, advice and current opinion on the migratory behaviour of most taxonomic groups of fishes occurring in fresh water. University libraries and aquatic research stations should also have copies of this essential reference book on their shelves. Well-known international authors. Of great commercial importance to fisheries and professional angling bodies. Draws together much new information in one place. Detailed review of world wide migratory behaviour for most groups of freshwater fishes. Pure and applied relevance, for academics, fisheries scientists, river managers and conservationists. This comprehensive book includes 67 tables and figures and over 1,400 references.

Download or read book Fishing with Electricity written by Ian G. Cowx and published by Wiley. This book was released on 1991-01-15 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: A guide to all the major developments in the application of electricity to inland fishery bilogy and management made over the last twenty years. This book has been written by the chairmen of the subject panels at the International Symposium on Fishing with Electricity and summarises the main results of the symposium.

Download or read book Large scale dam removal and ecosystem restoration written by Rebecca McCaffery and published by Frontiers Media SA. This book was released on 2024-09-20 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rivers are vital ecosystems that support aquatic and terrestrial biodiversity and several ecosystem services, including food, water, culture, and recreation. After centuries of building dams on rivers across the world, dam removal projects are now on the rise due to obsolescence, reservoir sedimentation, insufficient return on investment, or river restoration and conservation priorities. Most dam removal projects have focused on smaller structures (< 10 m in structural height), but larger structures have also started to be removed in increasing numbers as practitioners, river managers, conservationists, and the public have gained more experience with the practice. Recent estimates suggest that only a small fraction of dam removals have been scientifically studied, and include mostly small dams and short time scales. Documenting the long-term ecological outcomes of large dam removal (i.e. >10 m tall) represents a new frontier in dam removal research: projects are more recent and provide an opportunity to understand the complex ecological changes that occur with these transformative restoration projects. Here, we aim to collate a diverse array of papers on long-term dam removal research projects involving larger dams (>10 m) to synthesize the issues, outcomes, tools, and experimental designs used to study large dam removal projects from physical, biological, and ecological perspectives. With this collection, we aim to showcase diverse global projects on ecosystem responses to large dam removal; collect perspectives from different disciplines, fields, and geographies; and synthesize the current state of knowledge in this area. We expect that this Research Topic will be informative to ongoing, long-term ecological restoration and monitoring projects related to dam removal as well as to upcoming large dam removal projects. We welcome contributions from all disciplines addressing the physical, ecological, and ecosystem responses to large-scale dam removal. Contributions could include original research in a specific discipline or area, case studies, or synthesis papers that address one or more of these topics in a transdisciplinary approach. Contributors could address any of the following major topics as related to outcomes of large dam removal, alone or in combination: Freshwater, estuarine, and marine aquatic biota; River and reservoir geomorphology; Terrestrial and riparian vegetation; Wildlife; Sedimentation; and Modelling. We would like contributors to highlight key results in their area of study, cross-disciplinary insights, and lessons learned that could inform ongoing monitoring and research efforts in current projects as well as upcoming large dam removals.

Download or read book Fish Passes written by Gerd Marmulla and published by Food & Agriculture Organization of the UN (FAO). This book was released on 2002-01-01 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many fish species, like salmon and sturgeon, undertake extended migrations as part of their basic behavior, and other fish and invertebrates also undertake short-term or small-scale migrations at certain phases of their life cycles. Activities such as dam construction for water supply and power generation, channelization for navigation and flood control, land drainage and wetland reclamation for agricultural and urban use all have profound impact on the aquatic ecosystem and thus on natural fish populations. Fish passes are often the only way to make it possible for aquatic fauna to pass obstacles that block their up-river journey. Based on knowledge and experience from mainly Europe and North America, this book describes the various types of fish passes, with special emphasis to "close-to-nature" solutions.