Найти книгу: "Salmon at the Edge"

Salmon at the Edge covers, in depth, the problems faced by wild Atlantic salmon and sea trout in estuaries and coastal zones, and in their early weeks at sea. The book also reflects the current precarious state of many migratory salmonid populations and the need for new approaches to a number of threats to these populations. Generated from papers given at the landmark Sixth Atlantic Salmon Symposium, held in Edinburgh, UK, Salmon at the Edge contains a huge wealth of information on such important topics as the impact of salmon farming, the behaviour of post-smolts in their early migration and their vulnerability to by-catch, and the use of nutrient enrichment and habitat enhancement to increase production of juvenile salmonids. With chapters written by internationally-known and respected authors, and including a message of support from His Royal Highness The Prince of Wales, this important volume is essential reading for all those involved with salmonid fishes, including fish biologists, fisheries scientists and managers, environmental, marine and freshwater scientists, and personnel involved in salmon aquaculture. Libraries in all universities and research establishments where these subjects are studied and taught should have copies on their shelves. The Sixth Atlantic Salmon Symposium, from which chapters in this book have been generated, was organised by The Atlantic Salmon Trust and The Atlantic Salmon Federation, and was published with the financial support of The Fishmongers’ Company and Scottish and Southern Energy. Derek Mills of The Atlantic Salmon Trust, Pitlochry, Perthshire, UK has many years of research, writing and editing experience in salmon biology and fisheries

Salmonid Fisheries is a landmark publication, concentrating on river management, habitat restoration and rehabilitation, disseminating lessons learnt in relation to the intensively studied salmonids that are applicable to future interventions, not just for salmonid species but for other non-salmonid species, biota and ecosystems. The contents of this book are the product of the Atlantic Salmon Trust’s 40th Anniversary Conference, held in association with the Game and Wildlife Conservation Trust. Drawing together carefully-edited contributions from many of the world leaders in river restoration from academia, commercial management and government agencies, this important book highlights the need to view river management from the context of the catchment and to adopt an ecosystem-based approach to restoration. The book is broadly divided into two sections which discuss first, the status of current understanding concerning the relationship between lotic habitat management, the response of salmonid fisheries and the theory of river restoration, and secondly, the application of this to habitat management and river restoration. Salmonid Fisheries is an extremely valuable work of reference for fisheries managers, ecologists, environmental scientists, fish biologists, conservation biologists and geomorphologists. Libraries in all universities and research establishments where biological and earth sciences, and fisheries management are studied or taught should have copies of this book on their shelves. Contributions from a wide range of well known experts Published in association with the Atlantic Salmon Trust Habitat management is crucial for dwindling wild salmon populations Of great importance to aquatic ecologists and fisheries managers

‘Sometimes the river was too high to see the fish pairs well, sometimes the wind shook up the surface too much to get a clear view. […] You know if they have already spawned and buried their eggs in the gravel because hit by the light they run, and squiggle downstream. Un-spawned, they face the light. It is one of nature’s great spectacles.’So begins Michael Wigan’s fascinating journey into the extraordinary world of the king of fish. He explores the natural history of the salmon, this most mysterious of fishes that has fascinated man for centuries, evoking passion and adventure throughout the ages.He explores the life cycle of the salmon, weaving his own experiences and stories into an evocative narrative. Crucially, he addresses the pressing matter of conservation issues and human management, which in the past has led to fast decreasing populations. History suggests it is the pressure of human development which has narrowed down the survival zone of the salmon, and the author questions whether we can go on altering natural systems and freshwater rivers in order to make space for human populations, and do so in sync with fish needs.In his unique and passionate voice, the author transports us to another world – his writing is beautifully evocative and his excitement for the salmon palpable throughout.

‘Sometimes the river was too high to see the fish pairs well, sometimes the wind shook up the surface too much to get a clear view. […] You know if they have already spawned and buried their eggs in the gravel because hit by the light they run, and squiggle downstream. Un-spawned, they face the light. It is one of nature’s great spectacles.’So begins Michael Wigan’s fascinating journey into the extraordinary world of the king of fish. He explores the natural history of the salmon, this most mysterious of fishes that has fascinated man for centuries, evoking passion and adventure throughout the ages.He explores the life cycle of the salmon, weaving his own experiences and stories into an evocative narrative. Crucially, he addresses the pressing matter of conservation issues and human management, which in the past has led to fast decreasing populations. History suggests it is the pressure of human development which has narrowed down the survival zone of the salmon, and the author questions whether we can go on altering natural systems and freshwater rivers in order to make space for human populations, and do so in sync with fish needs.In his unique and passionate voice, the author transports us to another world – his writing is beautifully evocative and his excitement for the salmon palpable throughout.

This important book contains a great wealth of practical information on trout and salmon, species of fish that are of huge scientific and commercial interest. The introductory chapters of Trout and Salmon cover the biology and environmental variables of importance when considering these species. Further chapters encompass current information on the ecology of salmon and trout, with particular emphasis on the definition and quantification, where possible, of their environmental requirements and limitations. Comprehensive coverage of the impacts of human activities on trout and salmon is included, together with important aspects of relevance when considering issues of species conservation and habitat restoration. The book concentrates on the two species of the genus Salmo with many references and comparisons with the genus Oncorhynchus. Conclusions drawn within the book apply to both genera and as such the book will have relevance for both Europe and North America as well as other areas where these genera occur. Trevor Crisp has written a book that will be of great interest and use to fish biologists and fisheries scientists, to aquatic biologists, conservationists, ecologists and environmental scientists. The book will be particularly valuable for those working in government environment agencies and fish and wildlife departments and to all those involved in the management of these important species, their fisheries and habitats.

This important title encompasses features of genetic processes in complexly organised population systems of salmonids, one of the most commercially valuable families of fish worldwide. Translated from the original work in Russian, the authors have taken the opportunity to update and revise the work, much of it appearing in the English language for the first time. Covering such important concepts as optimal gene diversity and the unfavourable influence of fishery and hatchery reproduction on the genetic structure of salmon populations, the authors have drawn together a huge wealth of information that will form the cornerstone of much new work in the future. The authors of Salmonid Fishes have between them many years of research experience and practical knowledge in the area and the English translation of this important work, which has been edited by Professor John Thorpe and Professor Gary Carvalho, provides vital information for all those involved in salmonid management, exploitation and conservation, including fish biologists, fisheries managers, conservation and population biologists, ecologists and geneticists.