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Temperature affects everything. It influences all aspects of the physical environment and governs any process that involves a flow of energy, setting boundaries on what an organism can or cannot do. This novel textbook reveals the key principles behind the complex relationship between organisms and temperature, namely the science of thermal ecology. It starts by providing a rigorous framework for understanding the flow of energy in and out of the organism, before describing the influence of temperature on what organisms can do and how fast they can do it. With these fundamental principles covered, the bulk of the book explores thermal ecology itself, incorporating the important extra dimension of interactions with other organisms. An entire chapter is devoted to the crucially important subject of how organisms are responding to climate change. Indeed, the threat of rapid climatic change on a global scale is a stark reminder of the challenges that remain for evolutionary thermal biologists, and adds a sense of urgency to this book's mission.
Antarctica and the Southern Ocean cover one-tenth of the earth's surface. In a legal and environmental sense, Antarctica represents the geography of hope. It is the freshest and most pristine of regions, governed by a legal regime that offers Antarctica and its circumpolar water the unique possibility of becoming the world's first global wilderness preserve. But in today's age of resource scarcity, Antarctica still provokes much political, economic and legal debate. Over the past decade, international attention has increasingly focused on the legal status of the continent, the potential for hydrocarbon exploitation offshore, and opportunities for harvesting circumpolar living marine resource...
BIOMASS (Biological Investigations of Marine Antarctic Systems and Stocks) was a unique, large-scale, long-term, international research programme established in 1977 to investigate the ecology of the Southern Ocean. Its main aim was to gain a greater understanding of the biological systems and stocks in the marine Antarctic environment, thereby providing a sound basis for the future management of the living resources within this immense ocean. The programme was drawn to a close in 1991 and its completion marked by a colloquium which brought together key researchers to summarise and review the results obtained. This volume, arising from that colloquium, provides a succinct, state-of-the-art account of the ecology of the Southern Ocean and serves as a comprehensive record of this unique and successful international project.
Antarctica, a vast land remote from the other continents and still the least known of them all, provides a unique international laboratory for science. Despite the costs, a growing number of countries are supporting basic scientific research on the continent and in its surrounding seas. Our knowledge of life in this extreme environment, although limited, suggests that it is a key environment for many areas of science. Potential economic developments for food and minerals as well as increasing political complications might jeopardise the present scientific accord in the future. Now is the time to take stock: what do we know about Antarctic ecology? What are the threats and how can they be met? In this volume Antarctic scientists from six countries write about the Antarctic ecosystem.
Note that this book is based on Wikipedia and other public domain resources. Krill are small crustaceans of the order Euphausiacea, and are found in all the world's oceans. The name krill comes from the Norwegian word krill, meaning "young fry of fish", which is also often attributed to other species of fish. Krill are considered an important trophic level connection – near the bottom of the food chain – because they feed on phytoplankton and to a lesser extent zooplankton, converting these into a form suitable for many larger animals for whom krill makes up the largest part of their diet. In the Southern Ocean, one species, the Antarctic krill, Euphausia superba, makes up an estimated biomass of around 379 million tons, more than that of humans. Of this, over half is eaten by whales, seals, penguins, squid and fish each year, and is replaced by growth and reproduction. Most krill species display large daily vertical migrations, thus providing food for predators near the surface at night and in deeper waters during the day.
Award-winning broadcaster and natural historian David Attenborough and longtime collaborator Colin Butfield present a powerful call to action focused on our planet's oceans, exploring how critical this habitat is for the survival of humanity and the earth's future. Through personal stories, history and cutting-edge science, Ocean uncovers the mystery, the wonder, and the frailty of the most unexplored habitat on our planet—the one which shapes the land we live on, regulates our climate, and creates the air we breathe. This book showcase the oceans' remarkable resilience: they can, and in some cases have, recovered the fastest, if we only give them the chance. Drawing a course across David Attenborough's own lifetime, Ocean takes readers on an adventure-laden voyage through eight unique ocean habitats, countless intriguing species, and the most astounding discoveries of the last 100 years, to a future vision of a fully restored marine world—one even more spectacular than we could possibly hope for. Ocean reveals the past, present and potential future of our blue planet. It is a book almost a century in the making, but one that has never been more urgently needed.
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Discusses in twenty volumes the geography, vegetation, animal life, and resources of various regions throughout the world.
Krill, or euphausiids, a group of immense importance in marine ecosystems, comprises over 80 species, most of which are planktonic. Krill are widespread with species to be found in all the oceans of the world. Their numerical density in some regions increases their importance to marine ecosystems and has led to commercially successful krill harvesting. This comprehensive volume, thoroughly edited by Inigo Everson, well known for his work in this area, comprises chapters written by internationally acknowledged experts. The contents include coverage of: sampling and distribution, population, aggregation, reproduction and the role of krill in the ecosystem. Further specific chapters include kri...
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