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Author : Darryl J. Calkins
Publisher : Unknown
Page : 16 pages
File Size : 43,6 Mb
Release : 1989
Category : Atlantic salmon
ISBN : UFL:31262045988234
Author : Bror Jonsson,Nina Jonsson
Publisher : Springer Science & Business Media
Page : 720 pages
File Size : 54,7 Mb
Release : 2011-05-03
Category : Science
ISBN : 9789400711891
Destruction of habitat is the major cause for loss of biodiversity including variation in life history and habitat ecology. Each species and population adapts to its environment, adaptations visible in morphology, ecology, behaviour, physiology and genetics. Here, the authors present the population ecology of Atlantic salmon and brown trout and how it is influenced by the environment in terms of growth, migration, spawning and recruitment. Salmonids appeared as freshwater fish some 50 million years ago. Atlantic salmon and brown trout evolved in the Atlantic basin, Atlantic salmon in North America and Europe, brown trout in Europe, Northern Africa and Western Asia. The species live in small streams as well as large rivers, lakes, estuaries, coastal seas and oceans, with brown trout better adapted to small streams and less well adapted to feeding in the ocean than Atlantic salmon. Smolt and adult sizes and longevity are constrained by habitat conditions of populations spawning in small streams. Feeding, wintering and spawning opportunities influence migratory versus resident lifestyles, while the growth rate influences egg size and number, age at maturity, reproductive success and longevity. Further, early experiences influence later performance. For instance, juvenile behaviour influences adult homing, competition for spawning habitat, partner finding and predator avoidance. The abundance of wild Atlantic salmon populations has declined in recent years; climate change and escaped farmed salmon are major threats. The climate influences through changes in temperature and flow, while escaped farmed salmon do so through ecological competition, interbreeding and the spreading of contagious diseases. The authors pinpoint essential problems and offer suggestions as to how they can be reduced. In this context, population enhancement, habitat restoration and management are also discussed. The text closes with a presentation of what the authors view as major scientific challenges in ecological research on these species.
Author : Anonim
Publisher : Unknown
Page : 16 pages
File Size : 45,8 Mb
Release : 1989
Category : Arctic regions
ISBN : MINN:31951D00110981G
Author : Anonim
Publisher : Unknown
Page : 206 pages
File Size : 40,8 Mb
Release : 1993
Category : Brown trout
ISBN : UCR:31210018960482
Author : Ian Maddock,Atle Harby,Paul Kemp,Paul J. Wood
Publisher : John Wiley & Sons
Page : 659 pages
File Size : 45,5 Mb
Release : 2013-07-01
Category : Technology & Engineering
ISBN : 9781118526743
Ecohydraulics: An Integrated Approachprovides a research level text which highlights recent developments of this emerging and expanding field. With a focus on interdisciplinary research the text examines:- the evolution and scope of ecohydraulics interactions between hydraulics, hydrology, fluvial geomorphology and aquatic ecology the application of habitat modelling in ecohydraulic studies state of the art methodological developments and approaches detailed case studies including fish passage design and the management of environmental flow regimes research needs and the future of ecohydraulics research The contributions offer broad geographic coverage to encapsulate the wide range of approaches, case studies and methods used to conduct ecohydraulics research. The book considers a range of spatial and temporal scales of relevance and aquatic organisms ranging from algae and macrophytes to macroinvertebrates and fish. River management and restoration are also considered in detail, making this volume of direct relevance to those concerned with cutting edge research and its application for water resource management. Aimed at academics and postgraduate researchers in departments of physical geography, earth sciences, environmental science, environmental management, civil engineering, biology, zoology, botany and ecology; Ecohydraulics: An Integrated Approach will be of direct relevance to academics, researchers and professionals working in environmental research organisations, national agencies and consultancies.
Author : Daqing Yang,Douglas L. Kane
Publisher : Springer Nature
Page : 914 pages
File Size : 54,8 Mb
Release : 2020-08-28
Category : Science
ISBN : 9783030509309
This book provides a comprehensive, up-to-date assessment of the key terrestrial components of the Arctic system, i.e., its hydrology, permafrost, and ecology, drawing on the latest research results from across the circumpolar regions. The Arctic is an integrated system, the elements of which are closely linked by the atmosphere, ocean, and land. Using an integrated system approach, the book’s 30 chapters, written by a diverse team of leading scholars, carefully examine Arctic climate variability/change, large river hydrology, lakes and wetlands, snow cover and ice processes, permafrost characteristics, vegetation/landscape changes, and the future trajectory of Arctic system evolution. The discussions cover the fundamental features of and processes in the Arctic system, with a special focus on critical knowledge gaps, i.e., the interactions and feedbacks between water, permafrost, and ecosystem, such as snow pack and permafrost changes and their impacts on basin hydrology and ecology, river flow, geochemistry, and energy fluxes to the Arctic Ocean, and the structure and function of the Arctic ecosystem in response to past/future changes in climate, hydrology, and permafrost conditions. Given its scope, the book offers a valuable resource for researchers, graduate students, environmentalists, managers, and administrators who are concerned with the northern environment and resources.
Author : Pedro R. Almeida,Bernardo R. Quintella,Maria J. Costa,Andrew Moore
Publisher : Springer Science & Business Media
Page : 300 pages
File Size : 44,7 Mb
Release : 2007-10-18
Category : Science
ISBN : 9781402062377
This volume includes 33 peer-reviewed papers presented at the Sixth Conference on Fish Telemetry held in Europe (Sesimbra, Portugal, 5-11 June 2005). The papers focus on migration and behaviour, species conservation and habitat rehabilitation, human impacts and fisheries, telemetry methodology and new technology. This book is aimed at scientists and engineers actively involved in aquatic telemetry projects.
Author : Anonim
Publisher : Unknown
Page : 632 pages
File Size : 42,6 Mb
Release : 2001
Category : Electronic
ISBN : NWU:35556033427527
Author : National Research Council Canada,Canada. Department of Fisheries and Oceans
Publisher : NRC Research Press
Page : 276 pages
File Size : 49,8 Mb
Release : 1993
Category : Technology & Engineering
ISBN : 0660149540
Up-to-date information, knowledge and research in progress in scientific fields related to natural production of juvenile Atlantic salmon and some other ecologically similar fluvial salmonids is contained in the 25 papers and 12 abstracts contained in this publication, which were prepared for an international symposium held in St. John's, Newfoundland. Studies relate to stream ecology, invertebrates and predators, habitat improvement, competitive effects, behaviour and dispersal, habitat and production of juvenile salmon, population dynamics and relationships of juvenile salmon estimates to smolt yields. A list of participants at the conference is also provided.
Author : Javier Lobon-Cervia
Publisher : Springer Nature
Page : 733 pages
File Size : 46,9 Mb
Release : 2024-05-23
Category : Electronic
ISBN : 9783031443893
Author : Øystein Aas,Anders Klemetsen,Sigurd Einum,Jostein Skurdal
Publisher : John Wiley & Sons
Page : 492 pages
File Size : 42,9 Mb
Release : 2011-07-05
Category : Technology & Engineering
ISBN : 9781444348194
The Atlantic salmon is one of the most prized and exploited species worldwide, being at the centre of a massive sports fishing industry and increasingly as the major farmed species in many countries worldwide. Atlantic Salmon Ecology is a landmark publication, both scientifically important and visually attractive. Comprehensively covering all major aspects of the relationship of the Atlantic salmon with its environment, chapters include details of migration and dispersal, reproduction, habitat requirements, feeding, growth rates, competition, predation, parasitsm, population dynamics, effects of landscape use, hydro power development, climate change, and exploitation. The book closes with a summary and look at possible future research directions. Backed by the Norwegian Research Council and with editors and contributors widely known and respected, Atlantic Salmon Ecology is an essential purchase for all those working with this species, including fisheries scientists and managers, fish biologists, ecologists, physiologists, environmental biologists and aquatic scientists, fish and wildlife department personnel and regulatory bodies. Libraries in all universities and research establishments where these subjects are studied and taught should have copies of this important publication. Comprehensive and up-to-date coverage of Atlantic Salmon Atlantic Salmon is one of the world's most commercially important species Backed by the Norwegian Research Council Experienced editor and internationally respected contributors
Author : Anonim
Publisher : Unknown
Page : 560 pages
File Size : 54,9 Mb
Release : 1998-12
Category : Aquatic sciences
ISBN : UCSD:31822009134453
Author : Michel Leclerc
Publisher : Unknown
Page : 1020 pages
File Size : 47,9 Mb
Release : 1996
Category : Aquatic biology
ISBN : UCSD:31822025907395
Author : National Hydrology Research Institute (Canada)
Publisher : Saskatoon : National Hydrology Research Institute
Page : 420 pages
File Size : 53,7 Mb
Release : 1994
Category : Ice on rivers, lakes, etc
ISBN : UCR:31210018909190
Proceedings of the workshop, covering the geomorphological, physical, and biological effects of river ice along with other environmental aspects.
Author : Ken Bovee,J. R. Zuboy
Publisher : Unknown
Page : 424 pages
File Size : 53,8 Mb
Release : 1988
Category : Fishes
ISBN : UOM:39015086474221