Download or read book Norwegian Spring spawning Herring Northeast Arctic Cod written by Odd Nakken and published by Tapir Academic Press. This book was released on 2008 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Norwegian spring-spawning herring and Northeast Arctic cod are two of the largest and commercially most important fish stocks in the North Atlantic. Both these stocks have their spawning fields along the Norwegian coast and they have been the major target species for Norwegian fisheries for a millennium. They are also among the few fish stocks in the world which have been systematically investigated and monitored for more than a century. The scientific results, arrived at early in the 20th century for these two stocks, formed the basis for much of the development in international fisheries science later on. This book describes how fisheries, fisheries science, and management for Norwegian spring-spawning herring and Northeast Arctic cod developed during the 20th century. Over time, both populations developed serious decline in stock size and yield due to overfishing. The herring stock was in a state of collapse for about 20 years. Management measures that were then introduced permitted both stocks to recover in the 1990s. The contributors to the book have all been working as fisheries scientists at the Institute of Marine Research in Bergen.
Download or read book POLAR NIGHT Marine Ecology written by Jørgen Berge and published by Springer Nature. This book was released on 2020-04-08 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: Until recently, the prevailing view of marine life at high latitudes has been that organisms enter a general resting state during the dark Polar Night and that the system only awakens with the return of the sun. Recent research, however, with coordinated, multidisciplinary field campaigns based on the high Arctic Archipelago of Svalbard, have provided a radical new perspective. Instead of a system in dormancy, a new perspective of a system in full operation and with high levels of activity across all major phyla is emerging. Examples of such activities and processes include: Active marine organisms at sea surface, water column and the sea-floor. At surface we find active foraging in seabirds and fish, in the water column we find a high biodiversity and activity of zooplankton and larvae such as active light induced synchronized diurnal vertical migration, and at seafloor there is a high biodiversity in benthic animals and macroalgae. The Polar Night is a period for reproduction in many benthic and pelagic taxa, mass occurrence of ghost shrimps (Caprellides), high abundance of Ctenophores, physiological evidence of micro- and macroalgal cells that are ready to utilize the first rays of light when they appear, deep water fishes found at water surface in the Polar night, and continuous growth of bivalves throughout the winter. These findings not only begin to shape a new paradigm for marine winter ecology in the high Arctic, but also provide conclusive evidence for a top-down controlled system in which primary production levels are close to zero. In an era of environmental change that is accelerated at high latitudes, we believe that this new insight is likely to strongly impact how the scientific community views the high latitude marine ecosystem. Despite the overwhelming darkness, the main environmental variable affecting marine organisms in the Polar Night is in fact light. The light regime during the Polar Night is unique with respect to light intensity, spectral composition of light and photoperiod.
Download or read book State of the Arctic Marine Biodiversity Report written by and published by Government Printing Office. This book was released on 2017 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first report of the Circumpolar Biodiversity Monitoring Program (CBMP) to summarize status and trends in biotic elements in the arctic marine environment. The effort has identified knowledge gaps in circumpolar biodiversity monitoring. CBMP is the cornerstone program of Conservation of Arctic Flora and Fauna (CAFF).
Download or read book Sea Ice Bridging Spatial Temporal Scales and Disciplines written by Hauke Flores and published by Frontiers Media SA. This book was released on 2020-06-25 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
Download or read book Threats to the Arctic written by Scott Elias and published by Elsevier. This book was released on 2021-06-18 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt: Threats to the Arctic discusses all the current threats to this fragile region, emphasizing the interconnections between many environmental impacts, as well as the teleconnections between events already emerging in the Arctic (ocean circulation changes, melting of sea ice, glaciers and ice sheets) and other parts of the world. The book's aim is to inform readers about the impending, sometimes irreversible changes coming to the Arctic. University students, environmental engineers, policymakers and sociologists with an interest in the role of the Arctic in global change will benefit from the book's unique perspective. As this remote, inhospitable part of the world that few people will ever visit provides amazing insights, we can no longer have an 'out of sight – out of mind’ approach to the environmental upheavals taking place in the Arctic. Provides the most up-to-date information on this rapidly changing, critical part of the world Offers a holistic understanding of the interconnections between global environmental changes and impacts in the Arctic Examines fact-based pressure on politics and industry to preserve Arctic biota and environments
Download or read book Fishes of the Last Frontier written by Bill Hauser and published by Publication Consultants. This book was released on 2014-11-12 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fishes of the Last Frontier answers many of your fish questions and others you haven't even thought of yet in a nontechnical, plain talk voice. Learn about the fishes that are of value or special interest to Alaskans: how fish are able to survive and grow, how they get along with each other--or not--and what they eat, where and how our Alaska fishes spawn, the difference between a red and a redd, and the difference between anadromous and catadromous and why that is important. The author, a fishery scientist with nearly 50 years of experience and training, including more than 30 years in Alaska, describes the life history characteristics of 43 species of fishes valuable or important in some way to Alaskans. He delves into various aspects of biology and ecology of fish and provides insight into how humans and fish interact. The processes of fishery management in Alaska are described. Fishes of the Last Frontier includes fishes from throughout Alaska in fresh, brackish, and marine waters and sport, commercial, and subsistence fisheries. Learn not just how anadromous fish find their way home but also how scientists were able to learn the details. Nontechnical readers have reported the presentations as enjoyable, understandable, and informative.
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.
Download or read book Environmental Assessment of the Alaskan Continental Shelf written by and published by . This book was released on 1979-03 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chukchi Sea Planning Area Oil and Gas Sale 193 and the Seismic Surveying Activities in the Chukchi Sea written by and published by . This book was released on 2007 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chukchi Sea Planning Area Oil and Gas Lease Sale 193 in the Chukchi Sea Alaska Revised Draft Supplemental Environmental Impact Statement written by and published by DIANE Publishing. This book was released on with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Outer Continental Shelf Environmental Assessment Program Final Reports of Principal Investigators written by and published by . This book was released on 1984 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Alaska Outer Continental Shelf Seismic Surveys in the Beaufort and Chukchi Seas written by and published by . This book was released on 2007 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chukchi Sea Oil Gas Lease Sale 126 written by and published by . This book was released on 1990 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt: Draft of probable environmental impacts of offshore oil and gas field developments in the Chuckchi Sea off northwest Alaska including oil spills and effects on marine mammals, and effect on commercial and subsistence fishing.
Download or read book The Alaskan Beaufort Sea written by Peter W. Barnes and published by Elsevier. This book was released on 2013-09-17 with total page 483 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Alaskan Beaufort Sea: Ecosystems and Environments provides an interdisciplinary view into almost all aspects of the environment, with a detailed survey of the background literature. This book focuses on the Alaskan Beaufort Shelf environment. Organized into four parts encompassing 20 chapters, this book begins with an overview of the characteristics and history of the region in which the research took place and defines the objectives of the studies program. This text then examines the subsynoptic meteorological networks along the Beaufort Sea coast and shelf. Other chapters consider the thermally generated mesoscale effects on surface winds and the orographic mesoscale effects on surface winds. This book discusses as well the phytoplankton associations and relative phytoplankton production in the area between the 20-m depth contour and the edge of the ice in summer. The final chapter deals with the characteristics of the ice cover and oil-ice interactions that will affect cleanup activities after blowout. This book is a valuable resource for scientists and conservationists.
Download or read book Special Report 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 Chukchi Sea Oil and Gas Lease Sale No 109 written by and published by . This book was released on 1987 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Disaggregating International Regimes written by Olav Schram Stokke and published by MIT Press. This book was released on 2012 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Evaluating the effectiveness of international regimes presents challenges that are both general and specific. What are the best methodologies for assessment within a governance area and do they enable comparison across areas? In this book, Olav Schram Stokke connects the general to the specific, developing new tools for assessing international regime effectiveness and then applying them to a particular case, governance of the Barents Sea fisheries. Stokke's innovative disaggregate methodology makes cross-comparison possible by breaking down the problem and the relevant empirical evidence"--Provided by publisher.
