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International Council of Scientific Unions. Scientific Committee on Antarctic Research
Author : International Council of Scientific Unions. Scientific Committee on Antarctic Research Publisher : Cambridge University Press Page : 912 pages File Size : 41,5 Mb Release : 1997-08-28 Category : Nature ISBN : 0521480337
Antarctic Communities by International Council of Scientific Unions. Scientific Committee on Antarctic Research Pdf
The study of Antarctic communities can provide a valuable step forward in investigating the control of community development, the utilization of habitats and the interaction among species in both species rich and species poor communities. This book contains chapters characterizing the present approaches to both aquatic and terrestrial communities in the Antarctic. From biodiversity to trophic flows, from ecophysiological strategies to the impacts of environmental change and the effects of human disturbance, this volume provides an up to the minute overview of community studies in an area covering ten percent of the Earth's surface.
Alex D. Rogers,Nadine M. Johnston,Eugene J. Murphy,Andrew Clarke
Author : Alex D. Rogers,Nadine M. Johnston,Eugene J. Murphy,Andrew Clarke Publisher : John Wiley & Sons Page : 585 pages File Size : 43,5 Mb Release : 2012-02-28 Category : Science ISBN : 9781444347227
Antarctic Ecosystems by Alex D. Rogers,Nadine M. Johnston,Eugene J. Murphy,Andrew Clarke Pdf
Since its discovery Antarctica has held a deep fascination for biologists. Extreme environmental conditions, seasonality and isolation have lead to some of the most striking examples of natural selection and adaptation on Earth. Paradoxically, some of these adaptations may pose constraints on the ability of the Antarctic biota to respond to climate change. Parts of Antarctica are showing some of the largest changes in temperature and other environmental conditions in the world. In this volume, published in association with the Royal Society, leading polar scientists present a synthesis of the latest research on the biological systems in Antarctica, covering organisms from microbes to vertebrate higher predators. This book comes at a time when new technologies and approaches allow the implications of climate change and other direct human impacts on Antarctica to be viewed at a range of scales; across entire regions, whole ecosystems and down to the level of species and variation within their genomes. Chapters address both Antarctic terrestrial and marine ecosystems, and the scientific and management challenges of the future are explored.
Antarcticness joins disciplines, communication approaches and ideas to explore meanings and depictions of Antarctica. Personal and professional words in poetry and prose, plus images, present and represent Antarctica, as presumed and as imagined, alongside what is experienced around the continent and by those watching from afar. These understandings explain how the Antarctic is viewed and managed while identifying aspects which should be more prominent in policy and practice. The authors and artists place Antarctica, and the perceptions and knowledge through Antarcticness, within inspirations and imaginations, without losing sight of the multiple interests pushing the continent’s governance as it goes through rapid political and environmental changes. Given the diversity and disparity of the influences and changes, the book’s contributions connect to provide a more coherent and encompassing perspective of how society views Antarctica, scientifically and artistically, and what the continent provides and could provide politically, culturally and environmentally. Offering original research, art and interpretations of different experiences and explorations of Antarctica, explanations meld with narratives while academic analyses overlap with first-hand experiences of what Antarctica does and does not – could and could not – bring to the world.
Exploring the Last Continent by Daniela Liggett,Bryan Storey,Yvonne Cook,Veronika Meduna Pdf
This multi-disciplinary book will cater to students and those who want to have a more critical look behind the scenes of Antarctic science. This book will take a systems approach to providing insights into Antarctic ecosystems and the geophysical environment. Further, the book will link these insights to a discussion of current issues, such as climate change, bio prospecting, environmental management and Antarctic politics. It will be written and edited by experienced Antarctic researchers and scientists from a wide range of disciplines. Academic references will be included for those who wish to delve deeper into the topics discussed in the book.
Climate Change Biology is a new textbook which examines this emerging discipline of human-induced climate change and the resulting shifts in the distributions of species and the timing of biological events. The text focuses on understanding the impacts of human-induced climate change, but draws on multiple lines of evidence, including paleoecology, modelling and current observation. Climate Change Biology lays out the scope and depth of understanding of this new discipline in terms that are accessible to students, managers and professional biologists. * The only advanced student text on the biological aspects of climate change * Examines recent and deep past climate change effects to better understand the impacts of recent human-induced changes * Discusses the conservation and other ecological implications of climate change in detail * Presents recipes for coping with accelerating climate change in the future * Includes extensive illustrations with maps diagrams and color photographs
Antarctic Peninsula Region of the Southern Ocean by Eugene G. Morozov,Mikhail V. Flint,Vassily A. Spiridonov Pdf
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.
Microbial Ecology of Arid Terrestrial Systems by Thulani P. Makhalanyane,Don Cowan,Jean-Baptiste Ramond Pdf
Water is usually referred to as the ‘Molecule of Life’. It constitutes the most abundant molecule in living (micro)organisms and is also essential for critical biochemical reactions, both for the global functioning and maintenance of Ecosystems (e.g., Photosynthesis) and individual (microbial) cells (e.g., ATP hydrolysis). However, most of Earth’s terrestrial environments present deficiencies in bioavailable water. Arid environments cover around a third of the land’s surface, are found on the six continents and, with the anthropogenic desertification phenomenon, will increase. Commonly defined by having a ratio of precipitation to potential evapotranspiration (P/PET) below 1, arid environments, being either hot or cold, are characterized by scant and erratic plant growth and low densities in macro-fauna. Consequently, these ecosystems are microbially mediated with microbial communities particularly driving the essential Na and C biogeochemical cycles. Due to the relatively simple trophic structure of these biomes, arid terrestrial environments have subsequently been used as ideal ecosystems to capture and model interactions in edaphic microbial communities. To date, we have been able to demonstrate that edaphic microorganisms (i.e., Fungi, Bacteria, Archaea, and Viruses) in arid environments are abundant, highly diverse, different from those of other terrestrial systems (both in terms of diversity and function), and are important for the stability and productivity of these ecosystems. Moreover, arid terrestrial systems are generally considered Mars-like environments. Thus, they have been the favored destination for astro(micro)biologists aiming to better understand life’s potential distribution and adaptation strategies in the Universe and develop terraforming approaches. Altogether, these points demonstrate the importance of significantly improving our knowledge in the microbial community composition (particularly for Fungi, Archaea and Viruses), assembly processes and functional potentials of arid terrestrial systems, as well as their adaptation mechanisms to aridity (and generally to various other environmental stresses). This Research Topic was proposed to provide further insights on the microbial ecology of hot and cold arid edaphic systems. We provide a detailed review and nine research articles, spanning hot and cold deserts, edaphic, rhizospheric, BSC and endolithic environments as well as culture-dependent and -independant approaches.
Phytoplankton and Equilibrium Concept: The Ecology of Steady-State Assemblages by Luigi Naselli-Flores,Judit Padisák,Martin F. Bach Pdf
This volume summarises the outcome of the 13th Workshop of the International Association of Phytoplankton Taxonomy and Ecology (IAP) on if, and if so under what conditions phytoplankton assemblages reach equilibrium in natural environments. Quite a number of ecological concepts use terms such as: ecological equilibrium, stability, steady-state, climax, stable state, etc. However, these ecological concepts often have been "translations" of scientific theories developed in physics or chemistry but they almost always lack scientific corroboration, the problem being that often these concepts remain vague and they are not formally defined. Here an attempt to formally recognize what "equilibrium" is in phytoplankton ecology is traced. The book also contains papers by leading scientists on the taxonomy of two selected key groups: cryptomonads and filamentous cyanoprokaryotes. This volume is addressed to all those involved in phytoplankton taxonomy and ecology and in ecology itself.
