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Books > Earth & environment > The environment > Conservation of the environment > Conservation of wildlife & habitats > General

Conservation in Africa - Peoples, Policies and Practice (Paperback, Revised): David Anderson, Richard H. Grove Conservation in Africa - Peoples, Policies and Practice (Paperback, Revised)
David Anderson, Richard H. Grove
R1,552 Discovery Miles 15 520 Ships in 10 - 15 working days

This book provides a new inter-disciplinary look at the practice and policies of conservation in Africa. Bringing together social scientists, anthropologists and historians with biologists for the first time, the book sheds some light on the previously neglected but critically important social aspects of conservation thinking. To date conservation has been very much the domain of the biologist, but the current ecological crisis in Africa and the failure of orthodox conservation policies demand a radical new appraisal of conventional practices. This new approach to conservation, the book argues, cannot deal simply with the survival of species and habitats, for the future of African wildlife is intimately tied to the future of African rural communities. Conservation must form an integral part of future policies for human development. The book emphasises this urgent need for a complementary rather than a competitive approach. It covers a wide range of topics important to this new approach, from wildlife management to soil conservation and from the Cape in the nineteenth century to Ethiopia in the 1980s. It is essential reading for all those concerned about people and conservation in Africa.

Shackleton (Paperback): Ranulph Fiennes Shackleton (Paperback)
Ranulph Fiennes
R463 Discovery Miles 4 630 Ships in 18 - 22 working days
Biology and Conservation of North American Tortoises (Hardcover): David C. Rostal, Earl D. McCoy, Henry R. Mushinsky Biology and Conservation of North American Tortoises (Hardcover)
David C. Rostal, Earl D. McCoy, Henry R. Mushinsky
R1,596 Discovery Miles 15 960 Ships in 9 - 17 working days

Tortoises, those unmistakable turtles, evolved from a lineage that split off from the familiar pond turtles roughly 100 million years ago. Over time, these plant-eating land turtles spread around the world, growing to an enormous size (depending on the species) and living so long that they have become the stuff of legends. By most accounts, they are indeed the longest-lived of the turtles, with good records suggesting individuals may live as long as 180 years (anecdotal records suggest that some reach ages of 200 years or more). Providing the first comprehensive treatment of North America's tortoises, Biology and Conservation of North American Tortoises brings together leading experts to give an overview of tortoise morphology, taxonomy, systematics, paleontology, physiology, ecology, behavior, reproduction, diet, growth, health, and conservation. The contributors carefully combine their own expertise and observations with results from studies conducted by hundreds of other researchers. The result is a book that belongs in the library of every herpetologist. Contributors include: Gustavo Aguirre; L. Linda; J. Allison Matthew; J. Aresco Roy; C. Averill-Murray; Joan E. Berish; Kristin H. Berry; Dennis M. Bramble; K. Kristina Drake; Taylor Edwards; Todd C. Esque; Richard Franz; Craig Guyer; J. Scott Harrison; Sharon M. Hermann; J. Howard Hutchison; Elliott R. Jacobson; Valerie M. Johnson; Richard T. Kazmaier; Earl D. McCoy; Philip A. Medica; Robert W. Murphy; Henry R. Mushinsky; Kenneth E. Nussear; Michael P. O'Connor; Thomas A. Radzio; David C. Rostal; Lora L. Smith; James R. Spotila; Craig B. Stanford; C. Richard Tracy; Tracey D. Tuberville; Michael Tuma; and, Thane Wibbels.

Inside Forest Fires - Wildlife Management in India-5 (Paperback): Harbhajan Singh Pabla Inside Forest Fires - Wildlife Management in India-5 (Paperback)
Harbhajan Singh Pabla
R384 Discovery Miles 3 840 Ships in 18 - 22 working days
The Colobines - Natural History, Behaviour and Ecological Diversity (Hardcover, New Ed): Ikki Matsuda, Cyril C Grueter, Julie... The Colobines - Natural History, Behaviour and Ecological Diversity (Hardcover, New Ed)
Ikki Matsuda, Cyril C Grueter, Julie A. Teichroeb
R2,972 Discovery Miles 29 720 Ships in 10 - 15 working days

The Colobines are a group of Afroeurasian monkeys that exhibit extraordinary behavioural and ecological diversity. With long tails and diverse colourations, they are medium-sized primates, mostly arboreal, that are found in many different habitats, from rain forests and mountain forests to mangroves and savannah. Over the last two decades, our understanding of this group of primates has increased dramatically. This volume presents a comprehensive overview of the current research on colobine populations, including the range of biological, ecological, behavioural and societal traits they exhibit. It highlights areas where our knowledge is still lacking, and outlines the current conservation status of colobine populations, exploring the threats to their survival. Bringing together international experts, this volume will aid future conservation efforts and encourage further empirical studies. It will be of interest to researchers and graduate students in primatology, biological anthropology and conservation science. Additional online resources can be found at www.cambridge.org/colobines.

Species Conservation - Lessons from Islands (Paperback): Jamieson A. Copsey, Simon A. Black, Jim J. Groombridge, Carl G. Jones Species Conservation - Lessons from Islands (Paperback)
Jamieson A. Copsey, Simon A. Black, Jim J. Groombridge, Carl G. Jones
R1,253 Discovery Miles 12 530 Ships in 10 - 15 working days

This book brings together leading conservation practitioners to reflect on their response to the current global biodiversity crisis, through the lens of island species recovery and management. Initial chapters cover the biological understanding of small population biology and the growing threat of invasive species, while subsequent chapters discuss the management of these threats and the complexity of leading projects within a dynamic and still relatively unknown system. Multiple case studies from islands worldwide illustrate key points, allowing readers to draw on the first-hand practical experience of experienced professionals. This resource will be invaluable to both current and future conservation professionals, helping them to go beyond disciplinary 'comfort zones' and develop, manage and lead projects over extensive timeframes in a way that brings others with them on the journey.

Natural Resource Management and Local Development (Paperback, 2011 ed.): Russel D. Taylor, Emmanuel Torquebiau Natural Resource Management and Local Development (Paperback, 2011 ed.)
Russel D. Taylor, Emmanuel Torquebiau
R3,542 R3,256 Discovery Miles 32 560 Save R286 (8%) Ships in 9 - 17 working days

Natural resource management by rural citizens in tropical regions is crucial both to the conservation of biodiversity and ecosystem processes, but also to the the well-being and food security of the people that live there. This situation is especially acute in Africa where conflicts between habitat destruction and utilization can arise in areas which are important not only for biodiversity but for the long-term maintenance of ecosystems on which the people ultimately rely. There can also be conflicts between outside specialists and the indigenous knowledge of local communities. A holistic approach involving local peoples in management of their natural resources is therefore essential. A range of approaches to the problem is explored here in relation to natural resource management to local development and livelihoods, and the multi-functional nature of land-use. Major topics debated are the dichotomy between strictly protected areas and ones including human activity, people-centred rather than legally enforced conservation, market forces, and the interrelationships between agriculture and conservation. The book has 12 chapters, prepared by researchers actively involved in community aspects of natural resource management in Africa, and is based on an international workshop held in Niamey, Niger, in 2008. It will be of interest to all involved in the community approach to biodiversity conservation in less developed countries generally and not only in Africa as many of the issues addressed are pertinent globally. Reprinted from Biodiversity and Conservation 18: 10 (2009).

Insect Conservation: Past, Present and Prospects (Paperback, 2012 ed.): Tim R. New Insect Conservation: Past, Present and Prospects (Paperback, 2012 ed.)
Tim R. New
R4,914 R4,488 Discovery Miles 44 880 Save R426 (9%) Ships in 9 - 17 working days

The history of interest and practice in insect conservation is summarised and traced through contributions from many of the leaders in the discipline, to provide the first broad global account of how insects have become incorporated into considerations of conservation. The essays collectively cover the genesis and development of insect conservation, emphasising its strong foundation within the northern temperate regions and the contrasts with much of the rest of the world. Major present-day scenarios are discussed, together with possible developments and priorities in insect conservation for the future.

Nemesis, My Friend - Journeys Through the Turning Times (Hardcover): Jay Griffiths Nemesis, My Friend - Journeys Through the Turning Times (Hardcover)
Jay Griffiths
R523 R477 Discovery Miles 4 770 Save R46 (9%) Ships in 9 - 17 working days

This new book of essays from the author of Wild tracks the turning light of the day and seasons, an almanac of the turning times. Beginning in night and winter, it moves to dawn and spring, then noon and summer and finally evening and autumn. Set partly at the author's home in Wales, the book journeys widely, searching for a dead father in Prague, listening to the Sky-Grandmothers of Mexican myth and staying with the people of West Papua who, when they know they will fall over laughing, lie down first. It asks: what is the real gift of the misunderstood Goddess Nemesis? Why should flowers be prescribed as medicine? What do male zebra finches dream of? Where do the sands of time run fastest, and how is that connected to the age of anxiety? It explores the dawn chorus; the tradition of sacred hospitality; dust from the time before the sun even existed; the twilight time of the trickster and the daily rituals of morning. In all of these it asks: why does light, through the hours of the day and the seasons of the year, affect us? Griffiths concludes this extraordinary collection by deciding that light is in fact how we think.

Oceans in Decline (Paperback, 1st ed. 2019): Sergio Rossi Oceans in Decline (Paperback, 1st ed. 2019)
Sergio Rossi
R767 R681 Discovery Miles 6 810 Save R86 (11%) Ships in 18 - 22 working days

What is happening in our oceans? By describing their main elements, this book shows how and why the oceans are being transformed, and suggests possible future scenarios to address this complex, yet often-asked, question. The ocean is being dramatically transformed, but the magnitude of this transformation remains unclear since the ocean is largely inaccessible and still unknown: there is more information about the outer universe than about the deepest parts of our oceans. The author, a marine biologist with extensive research experience, offers a holistic view of our oceans. Focusing on fishing, pollution and the effects of climate change, he identifies and describes the changes occurring in all marine ecosystems, and discusses the long-passed state of equilibrium.

Infrastructure Development and Ape Conservation: Volume 3 (Hardcover): Arcus Foundation Infrastructure Development and Ape Conservation: Volume 3 (Hardcover)
Arcus Foundation
R2,531 Discovery Miles 25 310 Ships in 10 - 15 working days

Infrastructure development in Africa and Asia is expanding at breakneck speed, largely in biodiversity-rich developing nations. The trend reflects governments' efforts to promote economic growth in response to increasing populations, rising consumption rates and persistent inequalities. Large-scale infrastructure development is regularly touted as a way to meet the growing demand for energy, transport and food - and as a key to poverty alleviation. In practice, however, road networks, hydropower dams and 'development corridors' tend to have adverse effects on local populations, natural habitats and biodiversity. Such projects typically weaken the capacity of ecosystems to maintain ecological functions on which wildlife and human communities depend, particularly in the face of climate change. This title is also available as Open Access via Cambridge Core.

Beneficial Microorganisms in Agriculture, Aquaculture and Other Areas (Paperback, Softcover reprint of the original 1st ed.... Beneficial Microorganisms in Agriculture, Aquaculture and Other Areas (Paperback, Softcover reprint of the original 1st ed. 2015)
Min-Tze Liong
R2,635 Discovery Miles 26 350 Ships in 18 - 22 working days

This book focuses on the use of microorganisms in relation to agriculture, aquaculture and related fields, ranging from biofertilizers to poultry production. The latest innovations are also included to provide insights into the unlimited potentials of microorganisms in these areas.Individual chapters explore topics such as probiotics in poultry, biopurification of wastewater, converting agrowastes into value-added applications and products, rice cultivation, surfactants and bacteriocin as biopreservatives, bioplastics, crop productivity, biofloc, and the production of natural antibiotics. This volume will be of particular interest to scientists, policymakers and industrial practitioners working in the fields of agriculture, aquaculture and public health.

The Solitary Bees - Biology, Evolution, Conservation (Hardcover): Bryan N. Danforth, Robert L. Minckley, John L. Neff, Frances... The Solitary Bees - Biology, Evolution, Conservation (Hardcover)
Bryan N. Danforth, Robert L. Minckley, John L. Neff, Frances Fawcett
R1,226 R1,159 Discovery Miles 11 590 Save R67 (5%) Ships in 9 - 17 working days

The most up-to-date and authoritative resource on the biology and evolution of solitary bees While social bees such as honey bees and bumble bees are familiar to most people, they comprise less than 10 percent of all bee species in the world. The vast majority of bees lead solitary lives, surviving without the help of a hive and using their own resources to fend off danger and protect their offspring. This book draws on new research to provide a comprehensive and authoritative overview of solitary bee biology, offering an unparalleled look at these remarkable insects. The Solitary Bees uses a modern phylogenetic framework to shed new light on the life histories and evolution of solitary bees. It explains the foraging behavior of solitary bees, their development, and competitive mating tactics. The book describes how they construct complex nests using an amazing variety of substrates and materials, and how solitary bees have co-opted beneficial mites, nematodes, and fungi to provide safe environments for their brood. It looks at how they have evolved intimate partnerships with flowering plants and examines their associations with predators, parasites, microbes, and other bees. This up-to-date synthesis of solitary bee biology is an essential resource for students and researchers, one that paves the way for future scholarship on the subject. Beautifully illustrated throughout, The Solitary Bees also documents the critical role solitary bees play as crop pollinators, and raises awareness of the dire threats they face, from habitat loss and climate change to pesticides, pathogens, parasites, and invasive species.

YOUMARES 8 - Oceans Across Boundaries: Learning from each other - Proceedings of the 2017 conference for YOUng MARine... YOUMARES 8 - Oceans Across Boundaries: Learning from each other - Proceedings of the 2017 conference for YOUng MARine RESearchers in Kiel, Germany (Paperback, Softcover reprint of the original 1st ed. 2018)
Simon Jungblut, Viola Liebich, Maya Bode
R1,566 Discovery Miles 15 660 Ships in 18 - 22 working days

This open access book presents the proceedings volume of the YOUMARES 8 conference, which took place in Kiel, Germany, in September 2017, supported by the German Association for Marine Sciences (DGM). The YOUMARES conference series is entirely bottom-up organized by and for YOUng MARine RESearchers. Qualified early career scientists moderated the scientific sessions during the conference and provided literature reviews on aspects of their research field. These reviews and the presenters' conference abstracts are compiled here. Thus, this book discusses highly topical fields of marine research and aims to act as a source of knowledge and inspiration for further reading and research.

The Connections Between Ecology and Infectious Disease (Paperback, Softcover reprint of the original 1st ed. 2018): Christon J.... The Connections Between Ecology and Infectious Disease (Paperback, Softcover reprint of the original 1st ed. 2018)
Christon J. Hurst
R5,155 Discovery Miles 51 550 Ships in 18 - 22 working days

This book summarizes current advances in our understanding of how infectious disease represents an ecological interaction between a pathogenic microorganism and the host species in which that microbe causes illness. The contributing authors explain that pathogenic microorganisms often also have broader ecological connections, which can include a natural environmental presence; possible transmission by vehicles such as air, water, and food; and interactions with other host species, including vectors for which the microbe either may or may not be pathogenic. This field of science has been dubbed disease ecology, and the chapters that examine it have been grouped into three sections. The first section introduces both the role of biological community interactions and the impact of biodiversity on infectious disease. In turn, the second section considers those diseases directly affecting humans, with a focus on waterborne and foodborne illnesses, while also examining the critical aspect of microbial biofilms. Lastly, the third section presents the ecology of infectious diseases from the perspective of their impact on mammalian livestock and wildlife as well as on humans. Given its breadth of coverage, the volume offers a valuable resource for microbial ecologists and biomedical scientists alike.

Rewilding Africa - Restoring the Wilderness on a War-ravaged Continent (Paperback): Grant Fowlds, Graham Spence Rewilding Africa - Restoring the Wilderness on a War-ravaged Continent (Paperback)
Grant Fowlds, Graham Spence
R493 R450 Discovery Miles 4 500 Save R43 (9%) Ships in 9 - 17 working days

Conservationist Grant Fowlds lives to save and protect Africa's rhinos, elephants and other iconic wildlife, to preserve their habitats, to increase their range and bring back the animals where they have been decimated by decades of war, as in Angola, Mozambique and the Democratic Republic of the Congo. This vivid account of his work tells of a fellow conservationist tragically killed by the elephants he was seeking to save and a face-off with poachers, impoverished rural people exploited by rapacious local businessmen. Fowlds describes the impact of the Covid pandemic on conservation efforts, the vital wildlife tourism that sustains these and rural communities; and tells of conservationists' efforts to support people through the crisis. Lockdowns may have brought a welcome lull in rhino and other poaching, but also brought precious tourism to a standstill. He shows how the pandemic has highlighted the danger to the world of the illicit trade in endangered wildlife, some of it sold in 'wet markets', where pathogens incubate and spread. He describes a restoration project of apartheid-era, ex-South African soldiers seeking to make reparations in Angola, engulfed for many years in a profoundly damaging civil war, which drew in outside forces, from Cuba, Russia and South Africa, with a catastophic impact on that country's wildlife. Those who fund conservation, whether in the US, Zambia or South Africa itself, are of vital importance to efforts to conserve and rewild: some supposed angel-investors turn out to be not what they had appeared, some are thwarted in their efforts, but others are open-hearted and generous in the extreme, which makes their sudden, unexpected death an even greater tragedy. A passionate desire to conserve nature has also brought conservationists previously active in far-off Venezuela to southern Africa. Fowlds describes fraught meetings to negotiate the coexistence of wildlife and rural communities. There are vivid accounts of the skilled and dangerous work of using helicopters to keep wildebeest, carrying disease, and cattle apart, and to keep elephants from damaging communal land and eating crops such as sugar cane. He tells of a project to restore Africa's previously vast herds of elephants, particularly the famed 'tuskers', with their unusually large tusks, once prized and hunted almost to extinction. The range expansion that this entails is key to enabling Africa's iconic wildlife to survive, to preserving its wilderness and, in turn, helping humankind to survive. There is a heartening look at conservation efforts in Mozambique, a country scarred by years of war, which are starting to bear fruit, though just as a new ISIS insurgency creates havoc in the north of the country. What will humanity's relationship with nature be post-pandemic? Will we have begun to learn that by conserving iconic wildlife and their habitats we help to preserve and restore precious pockets of wilderness, which are so vital not only the survival of wildlife, but to our own survival on our one precious planet.

Steep Trails - A collection of wilderness essays and tales (Paperback, New edition): John Muir Steep Trails - A collection of wilderness essays and tales (Paperback, New edition)
John Muir; Foreword by Terry Gifford
R342 R320 Discovery Miles 3 200 Save R22 (6%) Ships in 18 - 22 working days

'When a man plants a tree, he plants himself. Every root is an anchor, over which he rests with grateful interest, and becomes sufficiently calm to feel the joy of living.' Steep Trails encompasses a delightful mix of John Muir's essays and adventure narratives, spanning a period of twenty-nine years. The selections included in this book are varied: ranging from geological studies to stories of the people and towns he encounters throughout his exploits. As Muir expert Terry Gifford observes in the foreword, 'Most of Steep Trails' chapters are dispatches from Muir as travelling correspondent with a mixture of insights into local cultures, criticism of pollution and enthusiasm for everything wild.' Muir's refreshing philosophy of being 'at one' with nature shines through every account he details, as does his agenda for environmental activism - to treat wildness lovingly, rather than selfishly for material greed. Covering mostly the western regions of the states, California, Washington, Nevada, The Grand Canyon, Oregon and Utah; Steep Trails showcases Muir's passion continuously as he climbs mountains, bathes in lakes, and sketches his findings. Muir's classic extended metaphors and knowledgeable tone are present throughout, making for both an enjoyable and educational read. The enthusiasm contained within these pages is infectious, and as well as simply describing the beauty he sees, Muir will inspire you too, to 'go and see for yourselves' the rewards of studying the endless gift of nature: 'Surely faithful and loving skill can go no farther in putting the multitudinous decorated forms on paper. But the colours, the living, rejoicing colours, chanting morning and evening in chorus to heaven! Whose brush or pencil, however lovingly inspired, can give us these? And if paint is of no effect, what hope lies in pen-work? Only this: some may be incited by it to go and see for themselves.'

Aiming to Save - A Vet's Life in Conservation (Paperback): Larry Patterson Aiming to Save - A Vet's Life in Conservation (Paperback)
Larry Patterson
R425 R393 Discovery Miles 3 930 Save R32 (8%) Ships in 9 - 17 working days

Pursuing a dream instilled by early David Attenborough television adventures, a young man from the industrial northwest of England is advised at school to become a veterinary surgeon as a first step towards a career working with wild animals in Africa. His misgivings about the values and justification of domestic veterinary practice are contrasted with a passion for wilderness and wildlife conservation. Early experiences in the vivid Uganda of Idi Amin are juxtaposed with life in a grey Pennines veterinary practice. Eventually arriving as a veterinary officer in newly independent Botswana he finds adventure with wild animals as a veterinarian and later as an ecologist, survey pilot, game capture operator and even a safari hunter, becoming a passionate conservationist... all while starting the first veterinary practice in the country.

Birds of Prey - Biology and conservation in the XXI century (Paperback, Softcover reprint of the original 1st ed. 2018): Jose... Birds of Prey - Biology and conservation in the XXI century (Paperback, Softcover reprint of the original 1st ed. 2018)
Jose Hernan Sarasola, Juan Manuel Grande, Juan Jose Negro
R6,566 Discovery Miles 65 660 Ships in 18 - 22 working days

This book will provide the state-of-the-art on most of the topics involved in the ecology and conservation of birds of prey. With chapters authored by the most recognized and prestigious researchers on each of the fields, this book will become an authorized reference volume for raptor biologists and researchers around the world.

The Last Giants - The Rise and Fall of the African Elephant (Hardcover): Levison Wood The Last Giants - The Rise and Fall of the African Elephant (Hardcover)
Levison Wood 1
R577 R518 Discovery Miles 5 180 Save R59 (10%) Ships in 9 - 17 working days

*Levison Wood's documentary series on WALKING WITH ELEPHANTS is available to watch now on Channel 4* This book comes at a critical time. Fifty years ago, Africa was home to just over 1.3 million elephants, but by 1990 the number had halved. Meanwhile in the span of a lifetime, the human population has more than doubled. In Levison Wood's The Last Giants, he explores the rapid decline of one of the world's favourite animals. Filled with stories from his own time spent travelling with elephants in Africa, and documenting their migration in his Channel 4 series, Walking With Elephants, the book is a passionate wake-up call for this endangered species we take for granted. The Last Giants was written to inspire us all to act - to learn more and help save the species from permanent extinction.

Rethinking Fisheries Governance - The Role of States and Meta-Governance (Paperback, Softcover reprint of the original 1st ed.... Rethinking Fisheries Governance - The Role of States and Meta-Governance (Paperback, Softcover reprint of the original 1st ed. 2018)
Hoang Viet Thang
R2,653 Discovery Miles 26 530 Ships in 18 - 22 working days

This book explores how the state can foster collective action by fisher's communities in fisheries management. It presents a different perspective from Elinor Ostrom's classic work on the eight institutional conditions that foster collective action in natural resource management and instead emphasizes the role of the state in fisheries co-management, engaging a state-centric notion of 'meta-governance'. It argues that first, the state is required to foster collective action by fishers; and secondly, that the current fisheries co-management arrangements are state-centric. The study develops these arguments through the analysis of three case studies in Japan, Vietnam and Norway. The author also makes a theoretical contribution to governance literature by developing Ostrom's 'society-centric' framework in a way which makes it more amenable to the analysis of state capacity and government intervention in a comparative context. This book will appeal to students and scholars of global governance, fisheries management, co-management, and crisis management, as well as practitioners of fisheries management.

Genetic Resources of Neotropical Fishes (Paperback, Softcover reprint of the original 1st ed. 2017): Alexandre W. S. Hilsdorf,... Genetic Resources of Neotropical Fishes (Paperback, Softcover reprint of the original 1st ed. 2017)
Alexandre W. S. Hilsdorf, Eric M. Hallerman
R4,011 Discovery Miles 40 110 Ships in 18 - 22 working days

The aim of this book is to systematize and discuss population genetic studies of freshwater fish in a region that harbors the greatest diversity of species among all inland water ecosystems. This volume explores the genetic evaluation for a number of orders, families and species of Neotropical fishes, and provides an overview on genetic resources and diversity and their relationships with fish domestication, breeding, and food production.

The Antarctic Silverfish: a Keystone Species in a Changing Ecosystem (Paperback, Softcover reprint of the original 1st ed.... The Antarctic Silverfish: a Keystone Species in a Changing Ecosystem (Paperback, Softcover reprint of the original 1st ed. 2017)
Marino Vacchi, Eva Pisano, Laura Ghigliotti
R2,663 Discovery Miles 26 630 Ships in 18 - 22 working days

This book encompasses the body of available scientific information on the notothenioid fish Pleuragramma antarctica commonly known as Antarctic silverfish. This plankton-feeder of the intermediate trophic level is the most abundant fish in the coastal regions of high Antarctica, and plays a pivotal ecological role as the main prey of top predators like seals, penguins, whales and Antarctic toothfish. Broad circum-polar distribution, a key role in the Antarctic shelf pelagic ecosystem, and adaptations makes understanding the species' likely response to environmental change relevant to foresee the potential responses at the local ecosystem level. Additionally, a detailed understanding of the abundance and trophic interactions of such a dominant keystone species is a vital element of informing the development of marine spatial planning and marine protected areas in the Antarctic continental shelf region. Experts in the field provide here unique insights into the evolutionary adaptation, eco-physiology, trophic ecology, reproductive and population ecology of the Antarctic silverfish and provide new clues about its vulnerability in facing the challenges of the ongoing environmental changes.

Modeling Coastal Hypoxia - Numerical Simulations of Patterns, Controls and Effects of Dissolved Oxygen Dynamics (Paperback,... Modeling Coastal Hypoxia - Numerical Simulations of Patterns, Controls and Effects of Dissolved Oxygen Dynamics (Paperback, Softcover reprint of the original 1st ed. 2017)
Dubravko Justic, Kenneth A Rose, Robert D. Hetland, Katja Fennel
R5,864 Discovery Miles 58 640 Ships in 18 - 22 working days

This book provides a snapshot of representative modeling analyses of coastal hypoxia and its effects. Hypoxia refers to conditions in the water column where dissolved oxygen falls below levels that can support most metazoan marine life (i.e., 2 mg O2 l-1). The number of hypoxic zones has been increasing at an exponential rate since the 1960s; there are currently more than 600 documented hypoxic zones in the estuarine and coastal waters worldwide. Hypoxia develops as a synergistic product of many physical and biological factors that affect the balance of dissolved oxygen in seawater, including temperature, solar radiation, wind, freshwater discharge, nutrient supply, and the production and decay of organic matter. A number of modeling approaches have been increasingly used in hypoxia research, along with the more traditional observational and experimental studies. Modeling is necessary because of rapidly changing coastal circulation and stratification patterns that affect hypoxia, the large spatial extent over which hypoxia develops, and limitations on our capabilities to directly measure hypoxia over large spatial and temporal scales. This book consists of 15 chapters that are broadly organized around three main topics: (1) Modeling of the physical controls on hypoxia, (2) Modeling of biogeochemical controls and feedbacks, and, (3) Modeling of the ecological effects of hypoxia. The final chapter is a synthesis chapter that draws generalities from the earlier chapters, highlights strengths and weaknesses of the current state-of-the-art modeling, and offers recommendations on future directions.

Tropical Fish Otoliths: Information for Assessment, Management and Ecology (Paperback, 2009 ed.): Bridget S Green, Bruce D.... Tropical Fish Otoliths: Information for Assessment, Management and Ecology (Paperback, 2009 ed.)
Bridget S Green, Bruce D. Mapstone, Gary Carlos, Gavin A. Begg
R4,902 R4,475 Discovery Miles 44 750 Save R427 (9%) Ships in 9 - 17 working days

Techniques and theory for processing otoliths from tropical marine fish have developed only recently due to an historic misconception that these organisms could not be aged. Otoliths are the most commonly used structures from which daily, seasonal or annual records of a fish's environmental history are inferred, and are also used as indicators of migration patterns, home range, spatial distribution, stock structure and life history events. A large proportion of projects undertaken on tropical marine organisms involve removal and processing of calcified structures such as otoliths, statoliths or vertebrae to retrieve biological, biochemical or genetic information. Current techniques and principles have evolved rapidly and are under constant modification and these differ among laboratories, and more particularly among species and within life history stages.

Tropical fish otoliths: Information for assessment, management and ecology is a comprehensive description of the current status of knowledge about otoliths in the tropics. This book has contributions from leading experts in the field, encompassing a tropical perspective on daily and annual ageing in fish and invertebrates, microchemistry, interpreting otolith microstructure and using it to back-calculate life history events, and includes a treatise on the significance of validating periodicity in otoliths.

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