Sturgeons are considered living fossils, sharing many morphological and biological features with ancestral fish. Furthermore, sturgeons are of the utmost interest from an economic perspective, not only for the caviar but for the flesh. However, the wild populations of the majority of the species are at serious risk of extinction all over the world. So, it is urgent to develop strategies for both farming culture and conservation and recovery in natural habitats.

This book provides a comprehensive view of the biology and sustainable development of sturgeons putting emphasis on the Southern Europe autochthonous species such as Acipenser nacarii and Acipenser sturio that share geographical distribution. Other relevant species (such as Huso huso, A. oxyrhinchus, A. ruthenus, A. stellatus) and areas (Germany, Russia, North America) are also considered. The contents are organised in three sections: Taxonomy and Biogeography (including the morphological and genetic analyses that clarify the taxonomy and phylogeny of sturgeons, focused on those from Southern Europe), Biology and Aquaculture (where several aspects of the developmental biology, feeding, and reproduction are considered in relation to the improvement of sturgeon farming), and Recovery and Conservation (that collates and analyses different recovery research actions, the ecology of the rivers for restoration as well as the problems related to the trade of caviar)."

Myth and media typically cast animals we consider predators or carnivores as unthinking killers-dangerous, unpredictable, and devoid of emotion. But is this portrait valid? By exploring their inner lives, this pioneering book refutes the many misperceptions that hide the true nature of these animals. We discover that great white sharks express tender maternal feelings, rattlesnakes make friends, orcas abide by an ancient moral code, and much more. Using the combined lenses of natural history, neuroscience, and psychology, G. A. Bradshaw describes how predators share the rainbow of emotions that humans experience, including psychological trauma. Renowned for leading research on post-traumatic stress disorder (PTSD) in elephants and other species, Bradshaw decries the irrational thinking behind wildlife policies that equate killing carnivores with "conservation." In its place, she proposes a new, ethical approach to coexistence with the planet's fiercest animals.

" This volume] presents an admirable set of case studies on the effects of modern conservation projects on local peoples from across the globe. The great strength of the volume lies in the diversity of cases." - International Journal of African Historical Studies ." . . this book will be the source material for future generations of researchers . . . The many arguments in this book will challenge and hopefully bring forward vigorous debate about the aims and goals of sustainable development and conservation tools." - The Indigenous Nations Studies Journal Wildlife conservation and other environmental protection projects can have tremendous impact on the lives and livelihoods of the often mobile, difficult-to-reach, and marginal peoples who inhabit the same territory. The contributors to this collection of case studies, social scientists as well as natural scientists, are concerned with this human element in biodiversity. They examine the interface between conservation and indigenous communities forced to move or to settle elsewhere in order to accommodate environmental policies and biodiversity concerns. The case studies investigate successful and not so successful community-managed, as well as local participatory, conservation projects in Africa, the Middle East, South and South Eastern Asia, Australia and Latin America. There are lessons to be learned from recent efforts in community managed conservation and this volume significantly contributes to that discussion. Dawn Chatty is General Editor of Studies in Forced Migration and teaches at the Center for Refugee Studies of the University of Oxford. Marcus Colchester works for the Forest Peoples Programme.

Wildlife conservation and other environmental protection projects can have tremendous impact on the lives and livelihoods of the often mobile, difficult-to-reach, and marginal peoples who inhabit the same territory. The contributors to this collection of case studies, social scientists as well as natural scientists, are concerned with this human element in biodiversity. They examine the interface between conservation and indigenous communities forced to move or to settle elsewhere in order to accommodate environmental policies and biodiversity concerns. The case studies investigate successful and not so successful community-managed, as well as local participatory, conservation projects in Africa, the Middle East, South and South Eastern Asia, Australia and Latin America. There are lessons to be learned from recent efforts in community managed conservation and this volume significantly contributes to that discussion.

'This is an epic journey by a man who’s not only obsessed with birds but who has a deep spiritual connection with the planet as he observes the environments and habitats he encounters.' David Lindo, author of How to be an Urban Birder The (Big) Year Flew By is the tale of one avid birder’s epic, record-breaking adventure through 40 countries over 6 continents – in just one year – to see 6,852 bird species, many on the precipice of extinction. When Arjan Dwarshuis first heard of the ‘Big Year’ – the legendary record for birdwatching – he was just twenty years old. It was midnight, and he was sitting on the roof of a truck high up in the Andean Mountains. In that moment, Arjan made a promise to himself that someday, somehow, he would become a world-record-holding birder. Ten years later, he embarked on an incredible, arduous and perilous journey that took him around the globe; over uninhabited islands, through dense unforgiving rainforests, across snowy mountain peaks and unrelenting deserts – in just a single year. Would he survive? Would he be able to break the ‘Big Year’ record, navigating through a world filled with shifting climate and geopolitical challenges? The (Big) Year that Flew By is an unforgettable, personal exploration of the limits of human potential when engaging with the natural world. It is a book about birds and birding and Arjan’s attempts to raise awareness for critically endangered species, but it is also a book about overcoming mental challenges, extreme physical danger and human competition and fully realizing your passions through nature, adventure and conservation.

In the endless light of summer days, and the magical gloaming of the wee small hours, nature in Jim's beloved Highlands, Perthshire and Trossachs heartlands is burgeoning freely, as though there is one long midsummer's eve, nothing reserved. For our flora and fauna, for the very land itself, this is the time of extravagant growth, flowering and the promise of fruit and the harvest to come. But despite the abundance, as Jim Crumley attests, summer in the Northlands is no Wordsworthian idyll. Climate chaos and its attendant unpredictable weather brings high drama to the lives of the animals and birds he observes. There is also a wild, elemental beauty to the land, mountains, lochs, coasts and skies, a sense of nature at its very apex during this, the most beautiful and lush of seasons. Jim chronicles it all: the wonder, the tumult, the spectacle of summer - and what is at stake as our seasons are pushed beyond nature's limits.

Keith Culver and David Castle Introduction Aquaculture is at the leading edge of a surprisingly polarized debate about the way we produce our food. According to the United Nations Food and Agriculture Organization, aquaculture production has increased 8. 8% per year since 1970, far surpassing productivity gains in terrestrial meat production at 2. 8% in the same period (FAO 2007). Like the 'green revolution' before it, the 'blue revolution' in aquaculture promises rapidly increased productivity through technology-driven - tensi?cation of aquaculture animal and plant production (Costa-Pierce 2002; The Economist 2003). Proponents of further aquaculture development emphasize aq- culture's ancient origins and potential to contribute to global food security d- ing an unprecedented collapse in global ?sheries (World Fish Center; Meyers and Worm 2003; Worm et al. 2006). For them, technology-driven intensi?cation is an - dinary and unremarkable extension of past practice. Opponents counter with images of marine and freshwater environments devastated by intensive aquaculture pr- tices producing unsustainable and unhealthy food products. They view the promised revolutionasascam, nothingmorethanclever marketingbypro?t-hungry ?shfa- ers looking for ways to distract the public from the real harms done by aquaculture. The stark contrast between proponents and opponents of modern aquaculture recalls decades of disputes about intensive terrestrial plant and animal agriculture, disputes whose vigor shows that the debate is about much more than food production (Ruse and Castle 2002).

Spring is nature's season of rebirth and rejuvenation. Earth's northern hemisphere tilts towards the sun, winter yields to intensifying light and warmth, and a wild, elemental beauty transforms the Highland landscape and a repertoire of islands from Colonsay to Lindisfarne. Jim Crumley chronicles the wonder, tumult and spectacle of that transformation, but he shows too that it is no Wordsworthian idyll that unfolds. Climate chaos brings unwanted drama to the lives of badger and fox, seal and seabird and raptor, pine marten and sand martin. Jim lays bare the impact of global warming and urges us all towards a more daring conservation vision that embraces everything from the mountain treeline to a second spring for the wolf.

Conservation genetics focuses on understanding the role and requirement of genetic variation for population persistence. However, considerable debate now surrounds the role of genetic factors (as opposed to non-genetic factors such as habitat destruction etc.) in population extinction, and a comprehensive synthesis is now timely. Can extinction be explained by habitat destruction alone or is lack of genetic variation a part of the explanation? The book thoroughly reviews the arguments for a role of genetics in the present biodiversity crisis. It describes the methods used to study genetic variation in endangered species and examines the influence of genetic variation in the extinction of species.
To date, conservation genetics has predominantly utilized neutral genetic markers e.g. microsatellites. However, with the recent advances in molecular genetics and genomics it will soon be possible to study 'direct gene action', following the fate of genetic variation at the level of DNA, through expression, to proteins in order to determine how such phenotypes fare in populations of free living organisms. Evolutionary Conservation Genetics explores these exciting avenues of future research potential, integrating ecological quantitative genetics with the new genome science. It is now more important than ever that we ask relevant questions about the evolutionary fate of endangered populations throughout the globe and incorporate our knowledge of evolutionary processes and the distribution of genetic diversity into effective conservation planning and action.

In this informed, incisive and passionate commentary on the state of nature and conservation, Mark Avery reflects on our relationship with the wildlife around us. From the cats that pass through his garden to the chronic decline of farmland wildlife, from the Pasqueflowers he visits every spring to the proportion of national income devoted to saving nature – everything is connected, and everything is considered. This book analyses what is wrong with certain ways we do wildlife conservation but explores some of its many successes too. How can we do better to restore wildlife to everybody’s lives? We know how to conserve species and habitats – it’s time to roll out conservation measures on a much bigger scale. This is a societal choice in which every nature lover can play their part. Reflections sets out what is needed, and what part the state, environmental charities and we as individuals can play in making that happen. This highly personal work from a life embedded in and dedicated to nature does not shy away from the harsh realities we face, but its message, ultimately, is one of hope.

This second edition emphasizes the environmental impact on reproduction, with updated chapters throughout as well as complete new chapters on species such as sharks and rays. This is a wide-ranging book that will be of relevance to anyone involved in species conservation, and provides critical perspectives on the real utility of current and emerging reproductive sciences.Understanding reproductive biology is centrally important to the way many of the world's conservation problems should be tackled. Currently the extinction problem is huge, with up to 30% of the world's fauna being expected to disappear in the next 50 years. Nevertheless, it has been estimated that the global population of animals in zoos encompasses 12,000 - 15,000 species, and we anticipate that every effort will be made to preserve these species for as long as possible, minimizing inbreeding effects and providing the best welfare standards available. Even if the reproductive biology community cannot solve the global biodiversity crisis for all wild species, we should do our best to maintain important captive populations. Reproductive biology in this context is much more than the development of techniques for helping with too little or too much breeding. While some of the relevant techniques are useful for individual species that society might target for a variety of reasons, whether nationalistic, cultural or practical, technical developments have to be backed up by thorough biological understanding of the background behind the problems.

Deepen your connection to the natural world with this inspiring meditation, "a path to the place where science and spirit meet" (Robin Wall Kimmerer).In Rooted, cutting-edge science supports a truth that poets, artists, mystics, and earth-based cultures across the world have proclaimed over millennia: life on this planet is radically interconnected. Our bodies, thoughts, minds, and spirits are affected by the whole of nature, and they affect this whole in return. In this time of crisis, how can we best live upon our imperiled, beloved earth?Award-winning writer Lyanda Lynn Haupt's highly personal new book is a brilliant invitation to live with the earth in both simple and profound ways-from walking barefoot in the woods and reimagining our relationship with animals and trees, to examining the very language we use to describe and think about nature. She invokes rootedness as a way of being in concert with the wilderness-and wildness-that sustains humans and all of life.In the tradition of Rachel Carson, Elizabeth Kolbert, and Mary Oliver, Haupt writes with urgency and grace, reminding us that at the crossroads of science, nature, and spirit we find true hope. Each chapter provides tools for bringing our unique gifts to the fore and transforming our sense of belonging within the magic and wonder of the natural world.

Ivory is big business, and in some parts of Africa elephants have been hunted almost to extinction in the quest for it. The losses to African economies have been catastrophic. Now there is an international ban on the trade and conservation is. the principal goal. This should be a matter for rejoicing, but nothing is quite so simple. The authors of this book have looked at the overall statistics, including those for countries where the elephant population is stable. They have considered the multiplicity of economic and social functions fulfilled by ensuring that elephant herds survive, tourism, a variety of ecological purpose. and, finally, as a source of ivory. They show how the careful management of elephants as a resource can best serve African interests. This book is at the cutting edge of economic thinking and provides a model for the consideration of the difficult relationship between people and wildlife. Originally published in 19990

This study assesses the significance of the hunting cult as a major element of the imperial experience in Africa and Asia. Through a study of the game laws and the beginnings of conservation in the 19th and early-20th centuries, the author demonstrates the racial inequalities which existed between Europeans and indigenous hunters. Africans were denied access to game, and the development of game reserves and national parks accelerated this process. Indigenous hunters in Africa and India were turned into "poachers" and only Europeans were permitted to hunt. In India, the hunting of animals became the chief recreation of military officers and civilian officials, a source of display and symbolic dominance of the environment. Imperial hunting fed the natural history craze of the day, and many hunters collected trophies and specimens for private and public collections as well as contributing to hunting literature. Adopting a radical approach to issues of conservation, this book links the hunting cult in Africa and India to the development of conservation, and consolidates widely-scattered material on the importance of hunting to the economics and nutrition of African societies. -- .

A comprehensive guide to the calls of the 44 species of bat currently known to occur in Europe. Following on from the popular British Bat Calls by Jon Russ, this new book draws on the expertise of more than forty specialist authors to substantially update all sections, further expanding the volume to include sound analysis and species identification of all European bats. Aimed at volunteers and professional alike, topics include the basics of sound, echolocation in bats, an introduction to acoustic communication, equipment used and call analysis. For each species, detailed information is given on distribution, emergence, flight and foraging behaviour, habitat, echolocation calls - including parameters of common measurements - and social calls. Calls are described for both heterodyne and time expansion/full spectrum systems. A simple but complete echolocation guide to all species is provided for beginners, allowing them to analyse call sequences and arrive at the most likely species or group. The book also includes access to a downloadable library of over 450 calls presented as sonograms in the species sections.

Arthropods are invertebrates that constitute over 90% of the animal kingdom, and their bio-ecology is closely linked with global functioning and survival. Arthropods play an important role in maintaining the health of ecosystems, provide livelihoods and nutrition to human communities, and are important indicators of environmental change. Yet the population trends of several arthropods species show them to be in decline. Arthropods constitute a dominant group with 1.2 million species influencing earth's biodiversity. Among arthropods, insects are predominant, with ca. 1 million species and having evolved some 350 million years ago. Arthropods are closely associated with living and non-living entities alike, making the ecosystem services they provide crucially important. In order to be effective, plans for the conservation of arthropods and ecosystems should include a mixture of strategies like protecting key habitats and genomic studies to formulate relevant policies for in situ and ex situ conservation. This two-volume book focuses on capturing the essentials of arthropod inventories, biology, and conservation.Further, it seeks to identify the mechanisms by which arthropod populations can be sustained in terrestrial and aquatic ecosystems, and by means of which certain problematic species be managed without producing harmful environmental side-effects. This edited compilation includes chapters contributed by over 80 biologists on a wide range of topics embracing the diversity, distribution, utility and conservation of arthropods and select groups of insect taxa. More importantly, it describes in detail the mechanisms of sustaining arthropod ecosystems, services and populations. It addresses the contribution of modern biological tools such as molecular and genetic techniques regulating gene expression, as well as conventional, indigenous practices in arthropod conservation. The contributors reiterate the importance of documenting and understanding the biology of arthropods from a holistic perspective before addressing conservation issues at large. This book offers a valuable resource for all zoologists, entomologists, ecologists, conservation biologists, policy makers, teachers and students interested in the conservation of biological resources.

What have we learnt about the Nile since the mid-1970s, the moment when Julian Rzoska decided that the time had come to publish a comprehensive volume about the biology, and the geological and cultural history of that great river? And what changes have meanwhile occurred in the basin? The human popu- tion has more than doubled, especially in Egypt, but also in East Africa. Locally, industrial development has taken place, and the Aswan High Dam was clearly not the last major infrastructure work that was carried out. More dams have been built, and some water diversions, like the Toshka lakes, have created new expanses of water in the middle of the Sahara desert. What are the effects of all this on the ec- ogy and economy of the Basin? That is what the present book sets out to explore, 33 years after the publi- tion of "The Nile: Biology of an Ancient River". Thirty-seven authors have taken up the challenge, and have written the "new" book. They come from 13 different countries, and 15 among them represent the largest Nilotic states (Egypt, Sudan, Ethiopia, Uganda, and Kenya). Julian Rzoska died in 1984, and most of the - authors of his book have now either disappeared or retired from research. Only Jack Talling and Samir Ghabbour were still available to participate again.

A unified theory of conservation that addresses the broad problem of conservation, the principles that inform conservation choices, and the application of those principles to the management of the natural world. The conservation of natural resources, like that of any other asset, involves trade-offs. Yet, in a world faced with the harsh realities of climate change, crafting the right environmental policies is an increasingly urgent task. In Conservation, Charles Perrings and Ann Kinzig bring together new research in economics and biodiversity to investigate conservation decisions and the theory behind them. Perrings and Kinzig apply the concept of conservation broadly to examine how the principles of conservation apply to the management of the natural world. They demonstrate that the same basic principles serve as the foundation of all rational conservation decisions, from managing financial assets to safeguarding at-risk ecosystems. Whether someone is deciding to hold or dispose of a stock or whether to exploit or preserve a natural resource, they are better off choosing to conserve a resource when its value to them, if conserved, is greater than its value when converted. The book also considers the context of such conservation decisions. Just as national tax rules influence choices about financial investments, environmental regulations within countries, and environmental agreements between countries, impact the decisions regarding natural resources. Building on their basic theory of conservation, Perrings and Kinzig address key issues in the field of environmental economics, including the valuation of ecosystem services and environmental assets; the limits on the substitutability of produced and natural capital; and the challenges posed by the often weak markets for ecosystem services oriented toward the public good. They also address the problem of scale: while decisions might be easier to make at the local level, many conservation policies need to apply at either the national or international level to succeed. Written by experts from both social and hard sciences, this book presents a unified theory of conservation and provides a model for a more effective way to approach the vitally important issue.

From Alaska's Arctic National Wildlife Refuge to the Milnesand Prairie Preserve of New Mexico, this volume provides a snapshot of the most spectacular and important natural places in the western United States. America's Natural Places: Pacific and West examines over 50 of the most spectacular and important areas of this region, with each entry describing the importance of the area, the flora and fauna that it supports, threats to the survival of the region, and what is being done to protect it. Organized by state within the volume, this work informs readers about the wide variety of natural areas across the western part of the United States and identifies places that may be near them that demonstrate the importance of preserving such regions.

We developed the first edition of this book because we perceived a need for a compilation on study design with application to studies of the ecology, conser- tion, and management of wildlife. We felt that the need for coverage of study design in one source was strong, and although a few books and monographs existed on some of the topics that we covered, no single work attempted to synthesize the many facets of wildlife study design. We decided to develop this second edition because our original goal - synthesis of study design - remains strong, and because we each gathered a substantial body of new material with which we could update and expand each chapter. Several of us also used the first edition as the basis for workshops and graduate teaching, which provided us with many valuable suggestions from readers on how to improve the text. In particular, Morrison received a detailed review from the graduate s- dents in his "Wildlife Study Design" course at Texas A&M University. We also paid heed to the reviews of the first edition that appeared in the literature.

Insects are the major component of the world's biodiversity. By their vast numbers of both species and individuals, they are vital determinants of the terrestrial ecological processes. Quantitatively, insects are important pointers for the species-rich geographical areas. Qualitatively, they are also important, whether the subjects of conservation themselves or as tools for identifying biotic areas with high endemism. "Insect Conservation Biology" covers a wide range of topics from single species to landscape conservation, and from rare butterflies to the benefits-and-risks of biocontrol agents. The approach is both positive and realistic, with insects being discussed in the contexts of sustainable development, agroecology and monitoring environmental change. Ethical issues surrounding insects are also considered as well as preservation technology and restoration ecology. Conservation circles have given too little attention to the ecological significance of insects, while entomologists have been employed mostly to control a tiny minority of species of insect pests. The realms of conservationist and entomologist are brought together in this book. This book should be of interest to conservation managers/biologists, entomologists, ecologists, and environmental scientists interested in biological diversity.

An illuminating look at the challenges and triumphs of state wildlife professionals at the forefront of the fight to protect the American wilderness. The adage "think globally but act locally" defines the work of American wildlife professionals. Their contributions, from remote outposts to major cities, guard the natural world of the entire country. In State Wildlife Management and Conservation, Thomas J. Ryder brings together wildlife leaders from practical, policy, and academic backgrounds to tell the story of state wildlife agencies, chronicling their efforts to restore and protect our nation's natural resources. Reflecting the core principle of the profession-that the public, not any individual, owns wildlife-the book explains how this tenet became law, laying the groundwork for the history of state-level wildlife management that follows. The authors cover key issues, including the limits of private land ownership, the funding of wildlife regulation, the nuances of humanwildlife conflict, the role of law enforcement, disease control efforts, and the challenges involved in balancing the perspectives of hunters, nonhunters, and animal rights advocates. Detailed essays also discuss state management techniques for a wide range of wildlife, including big game and migratory birds. State Wildlife Management and Conservation is a comprehensive, nationwide account of state management efforts. It will aid professors training the next generation of wildlife professionals, students hoping to enter the profession, and anyone working with wildlife to develop a more sophisticated understanding of what it means to be a state wildlife biologist. Contributors: M. Carol Bambery, Gordon R. Batcheller, Chad J. Bishop, Vernon C. Bleich, Dale Caveny, David K. Dahlgren, Daniel J. Decker, Karie L. Decker, Thomas A. Decker, Billy Dukes, John D. Erb, John R. Fischer, Ann B. Forstchen, Jonathan W. Gassett, Parks Gilbert, Colin M. Gillin, Tim L. Hiller, Daniel Hirchert, Michael W. Hubbard, Mark Humpert, Scott Hygnstrom, Robert P. Lanka, Richard E. McCabe, Jennifer Mock-Schaeffer, Brian Nesvik, Shaun L. Oldenburger, John F. Organ, Ronald J. Regan, Michael A. Schroeder, William F. Siemer, Christian Smith, Randy Stark, Gary J. Taylor, J. Scott Taylor, Daniel J. Thompson, Kurt VerCauteren, Mark P. Vrtiska, H. Bryant White, Steven A. Williams

A pioneering look at how climate change is affecting British wildlife - winners, losers, new arrivals and future prospects. There is no escaping the fact that the British climate is changing, and our wildlife is changing with it. In this remarkable account, Trevor Beebee examines the story so far for our plant, fungi and animal species. Warmer and wetter winters, combined with longer summers, have worked to the advantage of plants such as the rare Lady Orchid, and a whole range of insects. The UK is also hosting new arrivals that come in on the wing. But there is adversity, too. Alpine plants and seabirds - particularly Kittiwakes - are suffering declines as our countryside warms. Given the evidence so far, can we predict what the future holds for our British ecosystems? "Fascinating but frightening, compelling and concerning ... this book brings together all you need to know about how the climate is impacting wildlife." CHRIS PACKHAM Winner of the Marsh Book of the Year Award (2019)