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Size And Age Of Chinook And Coho Salmon For Subdivisons Of The Strait Of Georgia Troll Fishery 1967
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Book Synopsis Size and Age of Chinook and Coho Salmon for Subdivisons of the Strait of Georgia Troll Fishery, 1967 by : A. W. Argue
Download or read book Size and Age of Chinook and Coho Salmon for Subdivisons of the Strait of Georgia Troll Fishery, 1967 written by A. W. Argue and published by . This book was released on 1977 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Strait of Georgia Chinook and Coho Fishery by : A. W. Argue
Download or read book Strait of Georgia Chinook and Coho Fishery written by A. W. Argue and published by . This book was released on 1983 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: The chinook (Oncorhynchus tshawytscha) and coho (O. kisutch) salmon fishery in the Strait of Georgia, between Vancouver Island and the mainland of British Columbia, is a valuble sport and commercial resource. In an effort to evaluate proposed regulations on sport and commercial fishermen (season closures, size limits, bag limits, etc.), a computer simulation model was developed. The model calculates the abundance and size of the natural and enhanced stocks of chinook and coho for each age-class and evaluates regulatory options by simulating the life history of these fish in half-monthly intervals. Cohorts enter the model as smolts and are followed through natural mortality, emigration out of the Strait of Georgia, fishing mortality, shaking mortality, maturation, and spawning. The major effect of any regulation that reduces catch to one user increases the catch to other users of the resource. Any attempt to increase spawning escapement without regulation of several users simultaneously is destined to failure, and even quite harsh regulations do not double the critical chinook escapement. Finally, it is found that "enhancement" of chinook and coho will lead to a more rapid decline of natural stocks unless regulations are found to reduce overall exploitation rates on these stocks.
Book Synopsis Canadian Technical Report of Fisheries and Aquatic Sciences by :
Download or read book Canadian Technical Report of Fisheries and Aquatic Sciences written by and published by . This book was released on 1994 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pacific Salmon Life Histories by : Cornelis Groot
Download or read book Pacific Salmon Life Histories written by Cornelis Groot and published by UBC Press. This book was released on 1991 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pacific salmon are an important biological and economic resource of countries of the North Pacific rim. They are also a unique group of fish possessing unusually complex life histories. There are seven species of Pacific salmon, five occurring on both the North American and Asian continents (sockeye, pink, chum, chinook, and coho) and two (masu and amago) only in Asia. The life cycle of the Pacific salmon begins in the autumn when the adult female deposits eggs that are fertilized in gravel beds in rivers or lakes. The young emerge from the gravel the following spring and will either migrate immediately to salt water or spend one or more years in a river or lake before migrating. Migrations in the ocean are extensive during the feeding and growing phase, covering thousands of kilometres. After one or more years the maturing adults find their way back to their home river, returning to their ancestral breeding grounds to spawn. They die after spawning and the eggs in the gravel signify a new cycle. Upon this theme Pacific salmon have developed many variations, both between as well as within species. Pacific Salmon Life Histories provides detailed descriptions of the different life phases through which each of the seven species passes. Each chapter is written by a scientist who has spent years studying and observing a particular species of salmon. Some of the topics covered are geographic distribution, transplants, freshwater life, ocean life, development, growth, feeding, diet, migration, and spawning behaviour. The text is richly supplemented by numerous maps, illustrations, colour plates, and tables and there is a detailed general index, as well as a useful geographical index.
Book Synopsis Canadian Bulletin of Fisheries and Aquatic Sciences by :
Download or read book Canadian Bulletin of Fisheries and Aquatic Sciences written by and published by . This book was released on 1979 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Special Estuary Series written by and published by . This book was released on 1974 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preseason Report written by and published by . This book was released on 2002 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Computation and Interpretation of Biological Statistics of Fish Populations by : William Edwin Ricker
Download or read book Computation and Interpretation of Biological Statistics of Fish Populations written by William Edwin Ricker and published by . This book was released on 2010-06 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computation and Interpretation of Biological Statistics of Fish Populations, first published in 1975, deals with the general field of biological statistics of fish populations. It is a compilation of the more important procedures used to estimate abundance, age composition, rate of growth, and mortality rates in fish populations, with working examples of all the computations. Computation and Interpretation of Biological Statistics of Fish Populations is one of the most highly cited scientific references in the field of fisheries.
Book Synopsis Canadian Special Publication of Fisheries and Aquatic Sciences by :
Download or read book Canadian Special Publication of Fisheries and Aquatic Sciences written by and published by . This book was released on 1990 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Ecology of Humboldt Bay, California by : Roger A. Barnhart
Download or read book The Ecology of Humboldt Bay, California written by Roger A. Barnhart and published by . This book was released on 1992 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fishing Boats of the World by : Jan-Olaf Traung
Download or read book Fishing Boats of the World written by Jan-Olaf Traung and published by Kiefer Press. This book was released on 2008-10 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: PREFACE. THE Author of this very practical treatise on Scotch Loch - Fishing desires clearly that it may be of use to all who had it. He does not pretend to have written anything new, but to have attempted to put what he has to say in as readable a form as possible. Everything in the way of the history and habits of fish has been studiously avoided, and technicalities have been used as sparingly as possible. The writing of this book has afforded him pleasure in his leisure moments, and that pleasure would be much increased if he knew that the perusal of it would create any bond of sympathy between himself and the angling community in general. This section is interleaved with blank shects for the readers notes. The Author need hardly say that any suggestions addressed to the case of the publishers, will meet with consideration in a future edition. We do not pretend to write or enlarge upon a new subject. Much has been said and written-and well said and written too on the art of fishing but loch-fishing has been rather looked upon as a second-rate performance, and to dispel this idea is one of the objects for which this present treatise has been written. Far be it from us to say anything against fishing, lawfully practised in any form but many pent up in our large towns will bear us out when me say that, on the whole, a days loch-fishing is the most convenient. One great matter is, that the loch-fisher is depend- ent on nothing but enough wind to curl the water, -and on a large loch it is very seldom that a dead calm prevails all day, -and can make his arrangements for a day, weeks beforehand whereas the stream- fisher is dependent for a good take on the state of the water and however pleasant and easy it may be for one living near the banks of a good trout stream or river, it is quite another matter to arrange for a days river-fishing, if one is looking forward to a holiday at a date some weeks ahead. Providence may favour the expectant angler with a good day, and the water in order but experience has taught most of us that the good days are in the minority, and that, as is the case with our rapid running streams, -such as many of our northern streams are, -the water is either too large or too small, unless, as previously remarked, you live near at hand, and can catch it at its best. A common belief in regard to loch-fishing is, that the tyro and the experienced angler have nearly the same chance in fishing, -the one from the stern and the other from the bow of the same boat. Of all the absurd beliefs as to loch-fishing, this is one of the most absurd. Try it. Give the tyro either end of the boat he likes give him a cast of ally flies he may fancy, or even a cast similar to those which a crack may be using and if he catches one for every three the other has, he may consider himself very lucky. Of course there are lochs where the fish are not abundant, and a beginner may come across as many as an older fisher but we speak of lochs where there are fish to be caught, and where each has a fair chance. Again, it is said that the boatman has as much to do with catching trout in a loch as the angler. Well, we dont deny that. In an untried loch it is necessary to have the guidance of a good boatman but the same argument holds good as to stream-fishing...
Book Synopsis Fishers' Knowledge in Fisheries Science and Management by : Nigel Haggan
Download or read book Fishers' Knowledge in Fisheries Science and Management written by Nigel Haggan and published by United Nations Educational, Scientific & Cultural Organization. This book was released on 2007 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drawing on a number of case studies from around the world, this publication considers how the local knowledge and practices of indigenous fishing communities are being used in collaboration with scientists, government managers and non-governmental organisations to establish effective frameworks for sustainable fisheries science and management. It seeks to contribute towards achieving the goal of establishing international responsibility for the ethical collection, preservation, dissemination and application of fishers' knowledge.
Book Synopsis Biological Opinion [that Address the Potential Effects on Sacramento River Winter-run Chinook Salmon from the Bureau of Reclamation's Proposed Los Vaqueros Project] by :
Download or read book Biological Opinion [that Address the Potential Effects on Sacramento River Winter-run Chinook Salmon from the Bureau of Reclamation's Proposed Los Vaqueros Project] written by and published by . This book was released on 1993 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water for Peace written by and published by . This book was released on 1968 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Multispecies Approaches to Fisheries Management Advice by : M. C. Mercer
Download or read book Multispecies Approaches to Fisheries Management Advice written by M. C. Mercer and published by . This book was released on 1982 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication comprises the proceedings of an international workshop convened in St. John's, Nfld, Nov. 26-29, 1979. The purpose of the workshop was to discuss the results of recent multispecies research, its applications to management, and to consider future directions for research in this field. A total of 26 papers were presented, including a combination of experience papers, state-of-the-art review, and new scientific findings. Sequential sessions were held on fisheries systems research by the Department of Fisheries and Oceans, multispecies considerations in fisheries research and management advice in the ICES area, species interactions in the Northeast Pacific and Northwest Atlantic, fisheries interactions, and applications to fisheries management. The workshop concluded with a substantial discussion of implications of present knowledge for advice to fisheries managers and implications for research program planning. The Workshop Report comprises the Chairman's opening remarks, a report on main elements of discussion in the sessions, and a summarization of workshop conclusions.
Book Synopsis Sharks of the Pacific Northwest by : Alessandro De Maddalena
Download or read book Sharks of the Pacific Northwest written by Alessandro De Maddalena and published by Harbour Publishing. This book was released on 2007 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Those who think of sharks as something only found in tropical waters will be surprised to learn that there are 18 species of sharks in the cool waters of the Pacific Northwest, from the 27-inch brown catshark to the 39-foot basking shark. Sharks of the Pacific Northwest provides for the identification of these species, with spectacular photographs and accurate paintings and drawings, plus summaries of the sharks' classification, morphology, distribution, habitat, diet, reproduction and behaviour. It also includes a concise general account of shark evolution, anatomy and physiology, as well as discussion of attacks on humans and details of shark fisheries. It is primarily aimed at a broad, non-technical readership, but its up-to-date and detailed contents make it a useful tool for professional biologists and zoologists.
Author :Canada. Department of Fisheries and Oceans. Pacific Region Publisher :Department of Fisheries and Oceans, Information and Publications Branch ISBN 13 : Total Pages :444 pages Book Rating :4.:/5 (318 download)
Book Synopsis North Pacific Workshop on Stock Assessment and Management of Invertebrates by : Canada. Department of Fisheries and Oceans. Pacific Region
Download or read book North Pacific Workshop on Stock Assessment and Management of Invertebrates written by Canada. Department of Fisheries and Oceans. Pacific Region and published by Department of Fisheries and Oceans, Information and Publications Branch. This book was released on 1986 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: Various papers are presented on the topics of invertebrate management ingeneral; the sampling of adults, juveniles and larval forms;population dynamics and models; exploration and multispecies interactions;and management strategies. An overall workshop summary is included.
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