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

The Tawny Owl (Hardcover): Jeff Martin The Tawny Owl (Hardcover)
Jeff Martin
R2,312 R2,115 Discovery Miles 21 150 Save R197 (9%) Ships in 12 - 17 working days
Old-Growth Forests - Function, Fate and Value (Hardcover, 2009 ed.): Christian Wirth, Gerd Gleixner, Martin Heimann Old-Growth Forests - Function, Fate and Value (Hardcover, 2009 ed.)
Christian Wirth, Gerd Gleixner, Martin Heimann
R8,992 Discovery Miles 89 920 Ships in 12 - 17 working days

Many terms often used to describe old-growth forests imply that these forests are less vigorous, less productive and less stable than younger forests. But research in the last two decades has yielded results that challenge the view of old-growth forests being in decline. Given the importance of forests in battling climate change and the fact that old-growth forests are shrinking at a rate of 0.5% per year, these new results have come not a moment too soon.

This book is the first ever to focus on the ecosystem functioning of old-growth forests. It is an exhaustive compendium of information that contains original work conducted by the authors. In addition, it is truly global in scope as it studies boreal forests in Canada, temperate old-growth forests in Europe and the Americas, and global tropical forests. Written in part to affect future policy, this eminently readable book is as useful for the scientist and student as it is for the politician and politically-interested layman.

Rewilding Food and the Self - Critical Conversations from Europe (Hardcover): Tristan Fournier, Sebastien Dalgalarrondo Rewilding Food and the Self - Critical Conversations from Europe (Hardcover)
Tristan Fournier, Sebastien Dalgalarrondo
R4,103 Discovery Miles 41 030 Ships in 12 - 17 working days

contributes to the return to nature movement that is very much in vogue in contemporary European societies, by examining the place of food and eating in the rewilding process. focuses on the ways in which the hunter-gatherer livelihood has been transformed into a resilient, simpler and ecological way of life. shows how some practices which aim to reconnect with natural processes are developing within a market economy. will be of great interest to students and scholars of food studies, human-nature relationships, food culture and the anthropology of consumption and sustainable diets.

Threatened and Recently Extinct Vertebrates of the World - A Biogeographic Approach (Hardcover): Matthew Richardson Threatened and Recently Extinct Vertebrates of the World - A Biogeographic Approach (Hardcover)
Matthew Richardson
R3,153 R2,911 Discovery Miles 29 110 Save R242 (8%) Ships in 12 - 17 working days

Habitat loss and degradation are currently the main anthropogenic causes of species extinctions. The root cause is human overpopulation. This unique volume provides, for the very first time, a comprehensive overview of all threatened and recently extinct mammals, birds, reptiles, amphibians, and fishes within the context of their locations and habitats. The approach takes a systematic examination of each biogeographic realm and region of the world, both terrestrial and marine, but with a particular emphasis on geographic features such as mountains, islands, and coral reefs. It reveals patterns useful in biodiversity conservation, helps to put it all into perspective, and ultimately serves as both a baseline from which to compare subsequent developments as well as a standardization of the way threatened species are studied.

The Chimpanzees of Rubondo Island - Apes Set Free (Hardcover): Josephine Nadezda Msindai, Volker Sommer The Chimpanzees of Rubondo Island - Apes Set Free (Hardcover)
Josephine Nadezda Msindai, Volker Sommer
R4,111 Discovery Miles 41 110 Ships in 12 - 17 working days

How did a random batch of chimpanzees come to populate a small island in Tanzania where apes had never lived before? Combining information gathered from fieldwork, laboratory and archival research, this book tells the unique story of chimpanzee babies taken from their forest homes in West-Central Africa and sold to European zoos and circuses, to then be shipped to Lake Victoria and set free on Rubondo Island. These founder animals learnt what to eat, how to build nests, to breed and raise young - ultimately forming a chimpanzee-typical fission-fusion society that today is thriving. The authors compare the ecology, behaviour and genetics of the Rubondo population with communities of wild chimpanzees, providing exciting insights into how our closest relatives adjust to changing environments. At the same time, a reconstruction of the historical context of the Rubondo experiment reflects on its chequered colonial heritage, and the introduction is viewed against current threats to the survival of apes in their natural habitats. The book will be of interest to scholars and professionals working in primatology, animal behaviour, conservation biology and postcolonial studies.

A Thousand-Mile Walk To The Gulf - Legacy Edition - A Great Hike To The Gulf Of Mexico, Florida, And The Atlantic Ocean... A Thousand-Mile Walk To The Gulf - Legacy Edition - A Great Hike To The Gulf Of Mexico, Florida, And The Atlantic Ocean (Hardcover, Legacy ed.)
John Muir
R932 Discovery Miles 9 320 Ships in 10 - 15 working days
To Save the Wild Bison - Life on the Edge in Yellowstone (Hardcover, New): Mary Ann Franke To Save the Wild Bison - Life on the Edge in Yellowstone (Hardcover, New)
Mary Ann Franke
R1,388 R993 Discovery Miles 9 930 Save R395 (28%) Ships in 12 - 17 working days

Although the American bison was saved from near-extinction in the nineteenth century, today almost all herds are managed like livestock. The Yellowstone area is the only place in the United States where wild bison have been present since before the first Euro-Americans arrived. But these bison pose risks to property and people when they roam outside the park, including the possibility that they can spread the abortion-inducing disease brucellosis to cattle. Yet measures to constrain the population threaten their status as wild animals.Mary Ann Franke's To Save the Wild Bison is the first book to examine the ecological and political aspects of the bison controversy and how it reflects changing attitudes toward wildlife. The debate has evoked strong emotions from all sides, including park officials, environmentalists, livestock growers, and American Indians. In describing political compromises among competing positions, Franke does not so much champion a cause as critique the process by which federal and state officials have made and carried out bison management policies. She shows that science, however valuable a tool, cannot by itself resolve what is ultimately a choice among conflicting values.

We Are Family (Hardcover): Lucy Reynolds We Are Family (Hardcover)
Lucy Reynolds; Illustrated by Jenna Herman
R413 R378 Discovery Miles 3 780 Save R35 (8%) Ships in 9 - 15 working days
Yellowstone Wolves - Science and Discovery in the World's First National Park (Hardcover): Douglas W. Smith, Daniel... Yellowstone Wolves - Science and Discovery in the World's First National Park (Hardcover)
Douglas W. Smith, Daniel Stahler, Daniel R. MacNulty; Foreword by Jane Goodall
R1,114 Discovery Miles 11 140 Ships in 9 - 15 working days

In 2020, it will have been twenty-five years since one of the greatest wildlife conservation and restoration achievements of the twentieth century took place: the reintroduction of wolves to the world's first national park, Yellowstone. Eradicated after the park was established, then absent for seventy years, these iconic carnivores returned to Yellowstone in 1995 when the US government reversed its century-old policy of extermination and--despite some political and cultural opposition--began the reintroduction of forty-one wild wolves from Canada and northwest Montana. In the intervening decades, scientists have studied their myriad behaviors, from predation to mating to wolf-pup play, building a one-of-a-kind field study that has both allowed us to witness how the arrival of top predators can change an entire ecosystem and provided a critical window into impacts on prey, pack composition, and much else. Here, for the first time in a single book, is the incredible story of the wolves' return to Yellowstone National Park as told by the very people responsible for their reintroduction, study, and management. Anchored in what we have learned from Yellowstone, highlighting the unique blend of research techniques that have given us this knowledge, and addressing the major issues that wolves still face today, this book is as wide-ranging and awe-inspiring as the Yellowstone restoration effort itself. We learn about individual wolves, population dynamics, wolf-prey relationships, genetics, disease, management and policy, newly studied behaviors and interactions with other species, and the rippling ecosystem effects wolves have had on Yellowstone's wild and rare landscape. Perhaps most importantly of all, the book also offers solutions to ongoing controversies and debates. Featuring a foreword by Jane Goodall, beautiful images, a companion online documentary by celebrated filmmaker Bob Landis, and contributions from more than seventy wolf and wildlife conservation luminaries from Yellowstone and around the world, Yellowstone Wolves is a gripping, accessible celebration of the extraordinary Yellowstone Wolf Project--and of the park through which these majestic and important creatures once again roam.

An Introduction to Disturbance Ecology - A Road Map for Wildlife Management and Conservation (Hardcover, 1st ed. 2016): Corrado... An Introduction to Disturbance Ecology - A Road Map for Wildlife Management and Conservation (Hardcover, 1st ed. 2016)
Corrado Battisti, Gianluca Poeta, Giuliano Fanelli
R4,434 R3,558 Discovery Miles 35 580 Save R876 (20%) Ships in 12 - 17 working days

This book represents an introductory review of disturbance ecology and threat analysis, providing schematic concepts and approaches useful for work on sites that are affected by the impact of human actions. It is aimed at conservation and environmental practitioners, who will find tips for choosing methods and approaches when there are conflicts between the natural components and human activity. It is also addressed to students of applied ecology, ecosystem management, land-use planning and environmental impact assessment. It discusses a number of topics covered in the programs of many university courses related to basic ecology and ecology of disturbance, the latter constituting a field of great interest because of its implications and repercussions in applied territorial science. The book is divided into two parts: the first focuses on the theoretical and disciplinary framework of the ecology of disturbance, while the second is devoted to the analysis of anthropogenic threats. This, in particular, discusses the most recent approach, which uses a conventional nomenclature to allow a coarse-grained quantification and objective assessment of threat impact on different environmental components. Such an approach facilitates the comparison of hierarchically different events and, therefore, helps define the priorities for management and conservation strategies.

Reindeer Husbandry and Global Environmental Change - Pastoralism in Fennoscandia (Hardcover): Tim Horstkotte, Oystein Holand,... Reindeer Husbandry and Global Environmental Change - Pastoralism in Fennoscandia (Hardcover)
Tim Horstkotte, Oystein Holand, Jouko Kumpula, Jon Moen
R4,580 Discovery Miles 45 800 Ships in 12 - 17 working days

This volume offers a holistic understanding of the environmental and societal challenges that affect reindeer husbandry in Fennoscandia today. Reindeer husbandry is a livelihood with a long traditional heritage and cultural importance. Like many other pastoral societies, reindeer herders are confronted with significant challenges. Covering Norway, Sweden and Finland - three countries with many differences and similarities - this volume examines how reindeer husbandry is affected by and responds to global environmental change and resource extraction in boreal and arctic social-ecological systems. Beginning with an historical overview of reindeer husbandry, the volume analyses the realities of the present from different perspectives and disciplines. Genetics, behavioural ecology of reindeer, other forms of land use, pastoralists' norms and knowledge, bio-economy and governance structures all set the stage for the complex internal and externally imposed dynamics within reindeer husbandry. In-depth analyses are devoted to particularly urgent challenges, such as land-use conflicts, climate change and predation, identified as having a high potential to shape the future pathways of the pastoral identity and productivity. These futures, with their risks and opportunities, are explored in the final section, offering a synthesis of the comparative approach between the three countries that runs as a recurring theme through the book. With its richness and depth, this volume contributes significantly to the understanding of the substantial impacts on pastoralist communities in northernmost Europe today, while highlighting viable pathways to maintaining reindeer husbandry for the future. This book will be of great interest to students and scholars of both the natural and social sciences who work on natural resource management, global environmental change, pastoralism, ecology, social-ecological systems, rangeland management and Indigenous studies. The Open Access version of this book, available at www.taylorfrancis.com, has been made available under a Creative Commons Attribution- Non Commercial- No Derivatives 4.0 license.

The Corncrake - An Ecology of an Enigma (Paperback): Frank Rennie The Corncrake - An Ecology of an Enigma (Paperback)
Frank Rennie
R584 Discovery Miles 5 840 Ships in 9 - 15 working days

Changes in farmland management throughout the twentieth century, including agricultural intensification and increasing mechanisation, have resulted in the loss of habitat for many species. The Corncrake is one such species that has faced multiple challenges to its survival. Although it was once a common bird throughout northern Europe, the breeding areas of Corncrakes have been steadily reduced to a fraction of what they once were, and in many areas their continuation as a regularly breeding bird is in serious doubt. In addition, the behaviour of the Corncrake, nesting under the cover of tall grass and undertaking annual long-distance migrations, means that for most of the last hundred years, its detailed ecology has remained mysterious and little understood. Although there have been millions of words written about the Corncrake in scientific papers, until now there has been no full-length book that attempts to capture all the aspects of its ecology, and to present this information to non-specialists. As a result, until very recently, many important facts about its lifestyle and behaviour have not been widely known, even among ornithologists. Although scarcely seen in its natural habitat, the Corncrake is well-known in many rural areas due to its characteristic (and persistent) night-time calling, but new discoveries with the aid of acoustic science have proved surprising, and may offer new ways of improving the location, identification, and management options to protect and enable the population of this iconic species to recover, even to thrive in our countryside. A new appreciation of the requirements of this species and the ways in which our sensitive management of the whole landscape, both in its potential breeding areas across Europe and Asia and in the seasonal quarters in regions of Africa, offer new hope for the future of this fascinating bird.

Animals, Plants and Afterimages - The Art and Science of Representing Extinction (Hardcover): Valerie Bienvenue, Nicholas Chare Animals, Plants and Afterimages - The Art and Science of Representing Extinction (Hardcover)
Valerie Bienvenue, Nicholas Chare
R4,055 Discovery Miles 40 550 Ships in 12 - 17 working days

The sixth mass extinction or Anthropocene extinction is one of the most pervasive issues of our time. Animals, Plants and Afterimages brings together leading scholars in the humanities and life sciences to explore how extinct species are represented in art and visual culture, with a special emphasis on museums. Engaging with celebrated cases of vanished species such as the quagga and the thylacine as well as less well-known examples of animals and plants, these essays explore how representations of recent and ancient extinctions help advance scientific understanding and speak to contemporary ecological and environmental concerns.

Into the Great Emptiness - Peril and Survival on the Greenland Ice Cap (Hardcover): David Roberts Into the Great Emptiness - Peril and Survival on the Greenland Ice Cap (Hardcover)
David Roberts
R755 Discovery Miles 7 550 Ships in 12 - 17 working days

By 1930, no place in the world was less well explored than Greenland. The native Inuit had occupied the relatively accessible west coast for centuries. The east coast, however, was another story. In August 1930, Henry George Watkins (nicknamed Gino), a 23-year-old explorer, led thirteen scientists and explorers on an ambitious journey to the east coast of Greenland and its vast and forbidding interior. Their mission: chart and survey the region and establish a permanent meteorological base 8,000 feet high on the ice cap. That plan turned into an epic survival ordeal when August Courtauld, manning the station solo through the winter, became entombed by drifting snow. David Roberts, "veteran mountain climber and chronicler of adventures" (Washington Post), draws on firsthand accounts and rich archival materials to tell the story of this daring expedition and of the ingenious young explorer at its helm.

Parrots of Africa, Madagascar and the Mascarene Islands - Biology, Ecology and Conservation (Hardcover): Mike Perrin Parrots of Africa, Madagascar and the Mascarene Islands - Biology, Ecology and Conservation (Hardcover)
Mike Perrin
R600 R541 Discovery Miles 5 410 Save R59 (10%) Ships in 5 - 10 working days

Parrots’ colour and charisma, coupled with the fact that they mimic human speech, make them fascinating to many people. They are ancient birds with unique bill and foot structures that enable them to forage on fruits in the canopy of forest trees as well as on seeds in grasslands. Because they depend on fruits and seeds all year round, most species are confi ned to the tropics or sub-tropics, where the world’s biodiversity is at its greatest. There are over three hundred species of parrots, of which more than one hundred are recognised as rare, endangered, vulnerable or threatened with extinction.

Parrots are largely distributed in tropical areas of developing countries where economies are weak and uncertain, and where there is great dependence on the exploitation of natural resources, particularly hard wood evergreen forests, which are preferred parrot habitats. Unfortunately, high levels of corruption are common to these regions, with much illegal trade in animals and little or no law enforcement. Collectors of parrots in the fi rst world pay huge sums for rare parrots. However, research, education and conservation actions are greatly reducing illegal trade in African parrots.

This book provides complete coverage of all aspects of the biology of extant African, Malagasy and Mascarene parrots, and reviews our knowledge of extinct and fossil parrots from the region. Particular themes include the behavioural and ecological characteristics of parrots, their species characteristics and conservation biology. Current concepts in avian and conservation biology are also discussed.

Parrots of Africa, Madagascar and the Mascarene Islands is aimed at ornithologists, conservation biologists, avian ecologists, academics, bird watchers and parrot fans alike. It is well illustrated, with high quality original photographs, and includes distribution maps, fi gures and tables.

Ethical Debates in Orangutan Conservation (Paperback): Alexandra Palmer Ethical Debates in Orangutan Conservation (Paperback)
Alexandra Palmer
R1,405 Discovery Miles 14 050 Ships in 12 - 17 working days

Ethical Debates in Orangutan Conservation explores how conservationists decide whether, and how, to undertake rehabilitation and reintroduction (R&R) when rescuing orphaned orangutans. The author demonstrates that exploring ethical dilemmas is crucial for understanding ongoing disagreements about how to help endangered wildlife in an era of anthropogenic extinction. Although R&R might appear an uncontroversial activity, there is considerable debate about how, and why, it ought to be practised. Drawing on in-depth qualitative research with orangutan conservation practitioners, this book examines how ethical trade-offs shape debates about R&R. For example, what if the orphan fails to learn how to be an orangutan again, after years in the company of humans? What if she is sent into the forest only to slowly starve? Would she have been better off in a cage? Could the huge cost of sending a rescued ape back to the wild be better spent on stopping deforestation in the first place? Or do we have a moral obligation to rescue the orphan regardless of cost? This book demonstrates that deconstructing ethical positions is crucial for understanding ongoing disagreements about how to help our endangered great ape kin and other wildlife. Ethical Debates in Orangutan Conservation is essential reading for those interested in conservation and animal welfare, animal studies, primatology, geography, environmental philosophy, and anthropology.

RSPB Pocket Guide to British Birds (Paperback): Marianne Taylor RSPB Pocket Guide to British Birds (Paperback)
Marianne Taylor; Illustrated by Stephen Message
R271 Discovery Miles 2 710 Ships in 12 - 17 working days

A compact, lightweight and informative guide to 310 of the most common birds found in the UK. RSPB Pocket Guide to British Birds is a compact, lightweight and informative field guide, featuring 310 bird species regularly seen in the UK. Species are illustrated in all distinct plumage forms likely to be observed in the wild by renowned bird artist Stephen Message, and a detailed distribution map for the British Isles is also provided. Concise text covers appearance, behaviour and voice - focusing on key identification points - and also outlines where you will find the species, describes its seasonal movements and includes the latest UK population data. Finally, confusion species are cross-referenced, with their most important and easily noted differences from the subject species described. A comprehensive introduction provides a guide on how and where to find birds, and how to make the most useful and rewarding observations for newcomers to birdwatching. Uniquely, this guide also provides images and descriptions for not only a selection of rarer visitors, but also for a range of domestic species and certain commonly observed aberrant forms of more familiar birds, all of which are omitted from most field guides but can cause great confusion for beginners when encountered in the wild.

A Political Ecology of Forest Conservation in India - Communities, Wildlife and the State (Hardcover): Amrita Sen A Political Ecology of Forest Conservation in India - Communities, Wildlife and the State (Hardcover)
Amrita Sen
R4,565 Discovery Miles 45 650 Ships in 12 - 17 working days

This book critically explores the political ecology of human marginalization, wildlife conservation and the role of the state in politicizing conservation frameworks, drawing on examples from forests in India. The book specifically demonstrates the nuances within human-environmental linkages, by showing how environmental concerns are not only ecological in content but also political. In India a large part of the forests and their surrounding areas were inhabited far before they were designated as protected areas and inviolate zones, with the local population reliant on forests for their survival and livelihoods. Thus, socioecological conflicts between the forest dependents and official state bodies have been widespread. This book uses a political ecology lens to explore the complex interplay between current norms of forest conservation and environmental subjectivities, illustrating contemporary articulation of forest rights and the complex mediations between forest dependents and different state and non-state bodies in designing and implementing regulatory standards for wildlife and forest protection. It foregrounds the issues of identity, migration and cultural politics while discussing the politics of conservation. Through a political ecology approach, the book not only is human-centric but also makes significant use of the role of non-humans in foregrounding the conservation discourse, with a particular focus on tigers. The book will be of great interest to students and academics studying forest conservation, human-wildlife interactions and political ecology.

The Welfare of Performing Animals - A Historical Perspective (Hardcover, 2015 ed.): David A H Wilson The Welfare of Performing Animals - A Historical Perspective (Hardcover, 2015 ed.)
David A H Wilson
R4,849 R3,680 Discovery Miles 36 800 Save R1,169 (24%) Ships in 12 - 17 working days

This timely book describes and analyses a neglected area of the history of concern for animal welfare, discussing the ends and means of the capture, transport, housing and training of performing animals, as well as the role of pressure groups, politics, the press and vested interests. It examines primary source material of considerable interdisciplinary interest, and addresses the influence of scientific and veterinary opinion and the effectiveness of proposals for supervisory legislation, noting the current international status and characteristics of present-day practice within the commercial sector. Animal performance has a long history, and at the beginning of the twentieth century this aspect of popular entertainment became the subject not just of a major public controversy but also of prolonged British parliamentary attention to animal welfare. Following an assessment of the use of trained animals in the more distant historical past, the book charts the emergence of criticism and analyses the arguments and evidence used by the opponents and proponents in Britain from the early twentieth century to the present, noting comparable events in the United States and elsewhere.

The Way Home - Tales from a life without technology (Paperback): Mark Boyle The Way Home - Tales from a life without technology (Paperback)
Mark Boyle 1
R343 R312 Discovery Miles 3 120 Save R31 (9%) Ships in 9 - 15 working days

It was 11pm when I checked my email for the last time and turned off my phone for what I hoped would be forever. No running water, no car, no electricity or any of the things it powers: the internet, phone, washing machine, radio or light bulb. Just a wooden cabin, on a smallholding, by the edge of a stand of spruce. In this honest and lyrical account of a remarkable life without modern technology, Mark Boyle explores the hard won joys of building a home with his bare hands, learning to make fire, collecting water from the spring, foraging and fishing. What he finds is an elemental life, one governed by the rhythms of the sun and seasons, where life and death dance in a primal landscape of blood, wood, muck, water, and fire - much the same life we have lived for most of our time on earth. Revisiting it brings a deep insight into what it means to be human at a time when the boundaries between man and machine are blurring.

What Is a Bird? - An Exploration of Anatomy, Physiology, Behavior, and Ecology (Hardcover): Tony D. Williams What Is a Bird? - An Exploration of Anatomy, Physiology, Behavior, and Ecology (Hardcover)
Tony D. Williams; Contributions by Scott McWilliams, Julia A. Clarke, Elizabeth MacDougall-Shackleton, Scott MacDougall-Shackleton, …
R848 Discovery Miles 8 480 Ships in 12 - 17 working days

A large-format, beautifully illustrated look at the natural history of birds There are some 10,000 bird species in existence today, occupying every continent and virtually every habitat on Earth. The variety of bird species is truly astounding, from the tiny bee hummingbird to the large flightless ostrich, making birds one of the most diverse and successful animal groups on the planet. Taking you inside the extraordinary world of birds, What Is a Bird? explores all aspects of these remarkable creatures, providing an up-close look at their morphology, unique internal anatomy and physiology, fascinating and varied behavior, and ecology. It features hundreds of color illustrations and draws on a broad range of examples, from the familiar backyard sparrow to the most exotic birds of paradise. A must-have book for birders and armchair naturalists, What Is a Bird? is a celebration of the rich complexity of bird life. An absorbing and beautifully presented exploration of the natural history of birds Integrates physiological adaptations with ecology and behavior Features a wealth of color photographs and explanatory figures Uses scanning electron microscope imagery to provide a rare close-up view of structures not normally visible Provides insights into our complex relationship with birds, from our enduring fascination with them to the threats they face and the challenges of conservation

Saltmarsh Conservation, Management and Restoration (Mixed media product, 2008 ed.): J Patrick Doody Saltmarsh Conservation, Management and Restoration (Mixed media product, 2008 ed.)
J Patrick Doody
R3,036 Discovery Miles 30 360 Ships in 10 - 15 working days

Coastal habitats provide the link between the land and the sea. They are dynamic, combine to form ecosystems of great complexity and provide significant areas for wildlife. Their landscapes are treasured by visitors, painters and musicians. They also provide locations for significant economic activity and are intimately bound up with fisheries, providing food and shelter for some species of commercially exploited fish stocks. The habitats themselves provide a buffer to tides and wave action, which may be particularly important in areas where relative sea level is rising and during storm periods. Managing these assets in the face of continuing pressure from human populations on a sustainable basis is a major task.

CD-ROM included
This volume includes a CD-ROM containing electronic versions in full colour of the colour figures which are printed in black-and-white in the book.

Planning for the Planet - Environmental Expertise and the International Union for Conservation of Nature and Natural Resources,... Planning for the Planet - Environmental Expertise and the International Union for Conservation of Nature and Natural Resources, 1960-1980 (Hardcover)
Simone Schleper
R3,074 Discovery Miles 30 740 Ships in 12 - 17 working days

During the 1960s and 1970s, rapidly growing environmental awareness and concern created unprecedented demand for ecological expertise and novel challenges for ecological advocacy groups such as the International Union for Conservation of Nature and Natural Resources (IUCN). This book reveals how, despite their vast scientific knowledge and their attempts to incorporate socially relevant themes, IUCN experts inevitably struggled to make global schemes for nature conservation a central concern for UNESCO, UNEP and other intergovernmental organizations.

Ecology of Atlantic Salmon and Brown Trout - Habitat as a template for life histories (Hardcover, Edition.): Bror Jonsson, Nina... Ecology of Atlantic Salmon and Brown Trout - Habitat as a template for life histories (Hardcover, Edition.)
Bror Jonsson, Nina Jonsson
R10,689 Discovery Miles 106 890 Ships in 12 - 17 working days

Destruction of habitat is the major cause for loss of biodiversity including variation in life history and habitat ecology. Each species and population adapts to its environment, adaptations visible in morphology, ecology, behaviour, physiology and genetics. Here, the authors present the population ecology of Atlantic salmon and brown trout and how it is influenced by the environment in terms of growth, migration, spawning and recruitment. Salmonids appeared as freshwater fish some 50 million years ago. Atlantic salmon and brown trout evolved in the Atlantic basin, Atlantic salmon in North America and Europe, brown trout in Europe, Northern Africa and Western Asia. The species live in small streams as well as large rivers, lakes, estuaries, coastal seas and oceans, with brown trout better adapted to small streams and less well adapted to feeding in the ocean than Atlantic salmon. Smolt and adult sizes and longevity are constrained by habitat conditions of populations spawning in small streams. Feeding, wintering and spawning opportunities influence migratory versus resident lifestyles, while the growth rate influences egg size and number, age at maturity, reproductive success and longevity. Further, early experiences influence later performance. For instance, juvenile behaviour influences adult homing, competition for spawning habitat, partner finding and predator avoidance.
The abundance of wild Atlantic salmon populations has declined in recent years; climate change and escaped farmed salmon are major threats. The climate influences through changes in temperature and flow, while escaped farmed salmon do so through ecological competition, interbreeding and the spreading of contagious diseases. The authors pinpoint essential problems and offer suggestions as to how they can be reduced. In this context, population enhancement, habitat restoration and management are also discussed. The text closes with a presentation of what the authors view as major scientific challenges in ecological research on these species."

Alaska's Bears - Grizzlies, Black Bears, and Polar Bears, Revised Edition (Hardcover, 2nd edition): Bill Sherwonit Alaska's Bears - Grizzlies, Black Bears, and Polar Bears, Revised Edition (Hardcover, 2nd edition)
Bill Sherwonit; Photographs by Tom Walker
R600 Discovery Miles 6 000 Ships in 12 - 17 working days

Alaska is truly bear country. It is the only one of America’s fifty states to be inhabited by all three of North America’s ursine species: black, polar bear, and brown bear (also known as grizzly). Alaska’s Bears is a handy guidebook to the bears of Alaska, a book that slips easily into a jacket pocket or a day pack, and that provides entertaining armchair reading when you’re not in bear country. Here in one compact edition is a book that can help you understand Alaska’s bears and their natural histories. Learn about their appearances, behaviors, yearly cycles, ecological niches, and relationships with humans. Find full details on how to visit Alaska’s prime bear-viewing and get tips for traveling safely through bear country. Complementing Bill Sherwonit’s text are photographs from longtime Alaskan Tom Walker, a premier wildlife photographer who has spent hundreds of hours in the company of bears.

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