POLAR NIGHT Marine Ecology - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook POLAR NIGHT Marine Ecology write by Jørgen Berge. This book was released on 2020-04-08. POLAR NIGHT Marine Ecology available in PDF, EPUB and Kindle. 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.
Antarctic Peninsula Region of the Southern Ocean
Antarctic Peninsula Region of the Southern Ocean - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Antarctic Peninsula Region of the Southern Ocean write by Eugene G. Morozov. This book was released on 2022-01-01. Antarctic Peninsula Region of the Southern Ocean available in PDF, EPUB and Kindle. The book is based on results from the Russian expedition in the region of the Antarctic Peninsula and Powell Basin in the northern part of the Weddell Sea, as well as on the review of earlier research in the region. The main goal of the research was to collect the newest data and study the physical properties and ecology of this key region of the Southern Ocean. Data analysis is supplemented with numerical modeling of the atmosphere-ocean interaction and circulation in the adjacent region, including research on rogue waves. The focus of the study was the Antarctic Circumpolar Current, currents and water properties in the Bransfield Strait and Antarctic Sound, properties of seawater, currents, ecosystem and biological communities in the Powell Basin of the northwestern Weddell Sea, and their variations. An attempt is made to reveal the role of various components of the Antarctic environment in the formation of biological productivity and maintenance of the Antarctic krill population. This is especially important as in the last decades the Antarctic environment has experienced significant changes related to the global climatic trends.
Arctic Ecology
Arctic Ecology - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Arctic Ecology write by David N. Thomas. This book was released on 2021-01-26. Arctic Ecology available in PDF, EPUB and Kindle. 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.
The Physiology, Ecology and Biogeochemistry of Marine Zooplankton in a Changing Arctic Ocean
The Physiology, Ecology and Biogeochemistry of Marine Zooplankton in a Changing Arctic Ocean - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook The Physiology, Ecology and Biogeochemistry of Marine Zooplankton in a Changing Arctic Ocean write by Daniel J. Mayor. This book was released on 2023-07-21. The Physiology, Ecology and Biogeochemistry of Marine Zooplankton in a Changing Arctic Ocean available in PDF, EPUB and Kindle.
Effects of Ice Loss on Marine Biodiversity
Effects of Ice Loss on Marine Biodiversity - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Effects of Ice Loss on Marine Biodiversity write by Katrin Linse. This book was released on 2022-01-06. Effects of Ice Loss on Marine Biodiversity available in PDF, EPUB and Kindle.
