Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Landlocked Arctic Charr Salvelinus Alpinus Population Structure And Lake Morphometry In Greenland Is There A Connection
Download Landlocked Arctic Charr Salvelinus Alpinus Population Structure And Lake Morphometry In Greenland Is There A Connection full books in PDF, epub, and Kindle. Read online Landlocked Arctic Charr Salvelinus Alpinus Population Structure And Lake Morphometry In Greenland Is There A Connection ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Landlocked Arctic charr (Salvelinus alpinus) population structure and lake morphometry in Greenland - is there a connection? by : F. RIGET
Download or read book Landlocked Arctic charr (Salvelinus alpinus) population structure and lake morphometry in Greenland - is there a connection? written by F. RIGET and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ecology, behaviour and conservation of the charrs, genus Salvelinus by : Pierre Magnan
Download or read book Ecology, behaviour and conservation of the charrs, genus Salvelinus written by Pierre Magnan and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: Salvelinus species are one of the most thoroughly studied groups of fishes. Many reasons explain this intense interest in charr biology. Charrs have a Holarctic distribution encompassing many Asian, North American, and European countries and occupy diverse marine and freshwater environments. Furthermore, the current distribution of charr includes areas that were directly influenced by climate and topographic change associated with the many Pleistocene glaciations. Undoubtedly, these conditions have promoted much of the tremendous morphological, ecological, and genetic variability and plasticity within Salvelinus species and they make charr very good models to study evolutionary processes 'in action'. Many charr species also exhibit demographic characteristics such as slow growth, late maturity, and life in extreme environments, that may increase their susceptibility to extinction from habitat changes and overexploitation, especially in depauperate aquatic habitats. This vulnerability makes understanding their biology of great relevance to biodiversity and conservation. Finally, charr are of great cultural, commercial, and recreational significance to many communities, and their intimate linkage with human societies has stimulated much interest in this enigmatic genus. This volume comprises a selection of papers presented at the fourth International Charr Symposium held in Trois-Rivières (Québec, Canada), from 26 June to 1 July 2000. It includes 31 papers on ecological interactions and behaviour, trophic polymorphism, movement and migration, ecophysiology and evolutionary genetics, ecological parasitology, environmental stress and conservation. These studies cannot cover all recent developments in the ecology, behaviour and conservation of Salvelinus species, but collecting them into a special volume should bring attention to current research on this important genus and stimulate further work on Salvelinus species.
Download or read book Arctic Ecology written by David N. Thomas and published by John Wiley & Sons. This book was released on 2021-01-26 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Arctic is often portrayed as being isolated, but the reality is that the connectivity with the rest of the planet is huge, be it through weather patterns, global ocean circulation, and large-scale migration patterns to name but a few. There is a huge amount of public interest in the ‘changing Arctic’, especially in terms of the rapid changes taking place in ecosystems and exploitation of resources. There can be no doubt that the Arctic is at the forefront of the international environmental science agenda, both from a scientific aspect, and also from a policy/environmental management perspective. This book aims to stimulate a wide audience to think about the Arctic by highlighting the remarkable breadth of what it means to study its ecology. Arctic Ecology seeks to systematically introduce the diverse array of ecologies within the Arctic region. As the Arctic rapidly changes, understanding the fundamental ecology underpinning the Arctic is paramount to understanding the consequences of what such change will inevitably bring about. Arctic Ecology is designed to provide graduate students of environmental science, ecology and climate change with a source where Arctic ecology is addressed specifically, with issues due to climate change clearly discussed. It will also be of use to policy-makers, researchers and international agencies who are focusing on ecological issues and effects of global climate change in the Arctic. About the Editor David N. Thomas is Professor of Arctic Ecosystem Research in the Faculty of Biological and Environmental Sciences, University of Helsinki. Previously he spent 24 years in the School of Ocean Sciences, Bangor University, Wales. He studies marine systems, with a particular emphasis on sea ice and land-coast interactions in the Arctic and Southern Oceans as well as the Baltic Sea. He also edited a related book: Sea Ice, 3rd Edition (2017), which is also published by Wiley-Blackwell.
Book Synopsis Rapid Changes in the Arctic by : Kari Strand
Download or read book Rapid Changes in the Arctic written by Kari Strand and published by Nordic Council of Ministers. This book was released on 2006 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Polar Lakes and Rivers by : Warwick F. Vincent
Download or read book Polar Lakes and Rivers written by Warwick F. Vincent and published by OUP Oxford. This book was released on 2008-09-11 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book to describe the ecology of high latitude lakes, rivers and glacial environments in both the North and South polar regions. From the lake-rich floodplains of the Arctic to the deep, enigmatic waters of Lake Vostok, Antarctica, these regions contain some of the most extraordinary aquatic ecosystems on Earth. They provide a fascinating diversity of habitats for plant, animal and microbial communities, and are proving to be valuable model systems for exploring many ecological themes including landscape-lake interactions, adaptation of life to environmental extremes, and controls on the structure and functioning of aquatic ecosystems. Some of these waters also have direct global implications, including permafrost thaw lakes as sources of greenhouse gases, subglacial aquatic environments as a storehouse of ancient microbes, and Arctic rivers as major inputs of freshwater and organic carbon to the World Ocean. Given that many polar areas are experiencing greater climate warming than at lower latitudes, these ecosystems can also be viewed as sentinels of global change. This timely volume brings together many of the world's leading researchers in polar limnology to describe these diverse aquatic environments and their ecology. It introduces each major ecosystem type, examines the similarities and differences between Arctic and Antarctic systems as well as their responses to environmental change, and describes new frontiers for future research. A glossary of terms is provided for non-specialists, and a set of colour plates introduces the ecosystems and their biota. Polar Lakes and Rivers will be of value to students and specialist researchers alike, as well as to those with a more general interest in aquatic ecology, polar environments or global change who require an authoritative overview of this fast emerging topic.
Book Synopsis Arctic Climate Impact Assessment - Scientific Report by : Arctic Climate Impact Assessment
Download or read book Arctic Climate Impact Assessment - Scientific Report written by Arctic Climate Impact Assessment and published by Cambridge University Press. This book was released on 2005-11-07 with total page 1053 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Arctic is now experiencing some of the most rapid and severe climate change on earth. Over the next 100 years, climate change is expected to accelerate, contributing to major physical, ecological, social, and economic changes, many of which have already begun. Changes in arctic climate will also affect the rest of the world through increased global warming and rising sea levels. Arctic Climate Impact Assessment was prepared by an international team of over 300 scientists, experts, and knowledgeable members of indigenous communities. The report has been thoroughly researched, is fully referenced, and provides the first comprehensive evaluation of arctic climate change, changes in ultraviolet radiation and their impacts for the region and for the world. It is illustrated in full color throughout. The results provided the scientific foundations for the ACIA synthesis report - Impacts of a Warming Arctic - published by Cambridge University Press in 2004.
Book Synopsis Trophic Structure of Landlocked Arctic Char (Salvelinus Alpinus) in Iqalugaajuruluit Lake by : Arpita Chakraborty
Download or read book Trophic Structure of Landlocked Arctic Char (Salvelinus Alpinus) in Iqalugaajuruluit Lake written by Arpita Chakraborty and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Landlocked Arctic Charr by : Frederick W. Kircheis
Download or read book Landlocked Arctic Charr written by Frederick W. Kircheis and published by . This book was released on 1985 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Population structure, ecological segregation and reproduction in non-anadromous Arctic charr, Salvelinus alpinus (L), in four unexploited lakes in the Canadian high Arctic by : H.H. PARKER
Download or read book Population structure, ecological segregation and reproduction in non-anadromous Arctic charr, Salvelinus alpinus (L), in four unexploited lakes in the Canadian high Arctic written by H.H. PARKER and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Partial migration and the development of seasonal habitat shifts in a landlocked Arctic charr (Salvelinus alpinus) population by : Ingemar Näslund
Download or read book Partial migration and the development of seasonal habitat shifts in a landlocked Arctic charr (Salvelinus alpinus) population written by Ingemar Näslund and published by . This book was released on 1991 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Population Genetic Structure of Arctic Char (Salvelinus Alpinus) from the Rivers of the North Slope of Alaska by : Rebecca Jane Everett
Download or read book Population Genetic Structure of Arctic Char (Salvelinus Alpinus) from the Rivers of the North Slope of Alaska written by Rebecca Jane Everett and published by . This book was released on 1987 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Arctic Charr Aquaculture by : Gavin Johnston
Download or read book Arctic Charr Aquaculture written by Gavin Johnston and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: This important book draws together, for the first time, a vastwealth of information on all major aspects of the farming of Arcticcharr, a highly prized and commercially valuable salmonid. Theauthor, Gavin Johnston who has many years' experience of farmingArctic charr, teaching about and researching the species, hasproduced a book that is a landmark publication and an essentialpurchase for all those involved with the species. The book is broadly divided into three sections. The firstsection covers Arctic charr interactions with humans and thecharr's biological requirements for culture. Section two is apractical guide to the art and science of early-rearing Arcticcharr; a hands on application of current knowledge in Arctic charraquaculture. The final section of the book focuses on thecommercial production of Arctic charr, providing cutting-edgeinformation for all those involved in the exploitation of thisvaluable species. Arctic Charr Aquaculture is an essential purchase foranyone involved in, or considering involvement in farming of thisspecies. Farm managers and other personnel in fish farms andexperimental aquaculture units, fish and aquatic biologists willfind a huge amount of useful data in this book. Libraries in alluniversity departments and research establishments whereaquaculture, fisheries and fish biology are studies and taughtshould have copies of this book on their shelves. This book bringstogether for the first time the knowledge needed to farm and marketArctic Charr. Part One is an overview of Arctic Charr aquaculturebeginning with the history and development of Charr aquaculture,the biological attributes of Arctic Charr, the physicalrequirements for growth and commercial production requirements.Other chapters are devoted to Charr health, nutrition and feeding.Part Two is a practical guide for the producer operating an ArcticCharr farm either as a vertically integrated operation or asdiscrete hatcheries and grow out farms. Part Three is devoted tothe business of commercially producing Arctic Charr, and althoughit deals specifically with Charr it also covers many businessaspects of farming relevant to any fish species under cold watercultivation. It covers farm business management, the economics andfinance of Arctic Charr farming, marketing Charr products and aclosing section on how to avoid the pitfalls which others includingthe author have experienced.
Book Synopsis Population Genetic Structure of Arctic Char (Salvelinus Alpinus) from Rivers of the North Slope of Alaska and Canada by : Rebecca Jane Everett
Download or read book Population Genetic Structure of Arctic Char (Salvelinus Alpinus) from Rivers of the North Slope of Alaska and Canada written by Rebecca Jane Everett and published by . This book was released on 1988 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Partial Migration and the Development of Seasonal Habitat Shifts in a Landlocked Arctic Charr (Salvelinus Alpinus) by : Ingemar Näslund
Download or read book Partial Migration and the Development of Seasonal Habitat Shifts in a Landlocked Arctic Charr (Salvelinus Alpinus) written by Ingemar Näslund and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Polymorphic Segregation in Arctic Charr Salvelinus Alpinus (L.) from Lake Vatnshlidarvatn, Northern Iceland by : Bjarni Jonsson
Download or read book Polymorphic Segregation in Arctic Charr Salvelinus Alpinus (L.) from Lake Vatnshlidarvatn, Northern Iceland written by Bjarni Jonsson and published by . This book was released on 1996 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: I studied the occurrence of two sympatric morphs of arctic charr, Salvelinus alpinus (L.) in Vatnshlidarvatn, a small shallow lake in NW Iceland. The arctic charr were subjectively distinguished by colour and appearance as brown morph or silver morph, and measured for morphological and life history characters. The study revealed the presence of two growth forms represented by the two morphs that differed in age and size at sexual maturation, reproductive investment, and time and place of spawning. The morphs differed significantly in gill raker number and morphometric characters related to manoeuvrability and cruising ability. Morphological segregation was established early in life and is most readily explained as developmental heterochrony. Both morphs were benthivorous, but could be segregated as diet specialist and generalist, with diet segregation being important only when food (especially the benthic crustacean Eurycercus spp.) was scarce, The occurrence of one abundant food resource, and lack of interspecific competition (no other fish species are present) may explain the different feeding strategies. The presence of "empty" niche should induce variability and divergence in morphology and life history to occupy available niche space.
Book Synopsis Effects of Temperature on the Growth of Arctic Charr Salvelinus Alpinus in Ungava and Labrador, Canada by : Alyssa D. Murdoch
Download or read book Effects of Temperature on the Growth of Arctic Charr Salvelinus Alpinus in Ungava and Labrador, Canada written by Alyssa D. Murdoch and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Arctic surface air temperatures have been warming at twice the global rate, making it one of the most susceptible regions to current climate change. Effects on cold-adapted aquatic species, such as the culturally and ecologically important Arctic charr (Salvelinus alpinus), are difficult to anticipate and may vary depending on site-specific attributes. Temperature has a direct influence on aspects of species' fitness, including growth, reproduction and, ultimately, survival. Previous research on temperature-growth patterns in Arctic charr has yielded variable results, particularly for studies observing these patterns in the wild. Two field-based studies are presented in this thesis, in an attempt to better understand temperature-growth patterns for wild populations of Arctic charr. In the first study, individual measurements of annual, or within-season growth were determined from tag-recaptured Arctic charr and examined in relation to summer sea surface temperatures and within-season capture timing in the Ungava and Labrador regions of eastern Canada. Differences in among-year growth were significant for Ungava Bay Arctic charr, with growth being positively correlated with temperature. Growth of Labrador Arctic charr did not vary significantly among years. Regional comparisons demonstrated that Ungava Arctic charr had significantly higher annual growth rates, with differences among years in all regions being positively correlated with temperature. Within-season growth rates of Labrador Arctic charr peaked in June, declined toward August, and were negatively correlated with the length of time spent at sea and mean experienced sea surface temperatures. A quadratic model relating growth rate to temperature best explained the pattern of within-season growth. The higher annual growth of Ungava Bay Arctic charr was attributed to the high sea surface temperatures experienced in 2010-11 and the localized differences in nearshore productivity as compared to Labrador. Results suggest that increases in water temperature may have profound consequences for Arctic charr growth in the Canadian sub-Arctic, depending on the responses of local marine productivity to those same temperature increases. In the second study, oxygen stable isotope temperature reconstruction methods were used to estimate mean experienced summer temperatures from growth zones within individual otoliths of Arctic charr sampled from contrasting lake environments. For either lake, otolith-estimated temperatures were not significantly related to back-calculated growth. Significant negative effects on back-calculated growth were observed due to increasing air temperatures in the smaller lake, owing to warmer surface waters and a limited amount of preferred cool-water habitat available. A similar relationship was not observed in the larger lake, indicating that the cooler, deeper lake provides ample preferred cool-water habitat for Arctic charr despite climate warming. In addition, young-of-the-year temperatures negatively related to zone 2 growth for the smaller lake, whereas no significant correlation was found for the larger lake. Results here provide evidence for differing climate-influenced growth outcomes depending on the site-specific fish density: preferred thermal habitat volume ratio as dictated by local attributes including lake morphometry, upstream catchment area and life-history strategy. Conclusions from this thesis include the increased need for detailed site- and population-specific assessments of the impacts of increasing temperatures on Arctic charr growth. Better understanding of the drivers of temperature-growth relationships in wild Arctic charr populations will facilitate more accurate stock forecasts with the overall goal of sustaining exploited Arctic charr populations as the climate warms and becomes increasingly variable.
Book Synopsis Evolutionary Significance of Genomic and Morphological Variation in Icelandic Arctic Charr (Salvelinus Alpinus). by : Eva Küttner
Download or read book Evolutionary Significance of Genomic and Morphological Variation in Icelandic Arctic Charr (Salvelinus Alpinus). written by Eva Küttner and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
