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).

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.

Contingent Valuation and Endangered Species provides a comprehensive and rigorous examination of the contingent valuation method as applied to the profound social problem of biodiversity conservation.The contingent valuation method allows the explicit identification and valuation of the non-use values of species in a way which has not been possible before. This new book offers a rigorous state-of-the-art evaluation of the theoretical and statistical issues central to the contingent valuation method as well as a hands-on account of the design, implementation and analysis of contingent valuation surveys of the benefits of species conservation. Contingent Valuation and Endangered Species includes a comprehensive account of efforts at endangered species protection in Australia and New Zealand as well as current developments in the United States. This comprehensive appraisal of the problems and economics of biodiversity conservation will be welcomed by researchers and practitioners as an explicit hands-on application of the contingent valuation method.

A chance to move to the US Wild West allows TV presenter Philippa Forrester to fulfil a lifelong dream of living among and learning all she can about wolves When Philippa Forrester and her nature-loving family moved to the wilds of Grand Teton National Park, they quickly learned to love the wildlife of Wyoming and nearby Yellowstone. The sounds of wolves close to their new home fed Philippa's lifelong fascination with these remarkable animals, but nothing she had learned about wolves from her studies in the UK could have prepared her for the reality of living in wolf country. And as she and her family settled into their new wilder way of life, she discovered many locals are not excited about sharing their land with wolves. Twenty-five years after wolves were reintroduced to Yellowstone National Park, wolf packs are spreading into areas where their protection has been removed by the American administration. Without that protection, what is the future for wolves where many people resent that they were ever here at all? In On the Trail of Wolves, Philippa vividly recounts her adventures living among the grizzlies, elk and wolves in her new home in America's Wild West and chronicles her journeys further from home to talk to conservationists, rangers, hunters and ranch owners to investigate when and why opinions on wolves became so polarised.

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.

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.

For nearly a quarter century, the polar bears of Churchill were routinely run down and shot by the military, by residents and by conservation officers who were brought in during the late 1960s to protect people. According to one scientist who was there at the time, polar bears were treated more like "great white rats" than the world's largest predator. But then something remarkable happened. During the 1970s the residents of Churchill decided that it was time to find a more peaceful way of living with polar bears.
In the years that followed, scientists conducted studies on the polar bear population and in relatively short order the bears of Churchill became the most studied group of large predators in the 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

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.

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.

Meso and Microplastic Risk Assessment in Marine Environment: New Threat and Challenges in Marine Environment presents an interdisciplinary approach, offering key techniques and management of microplastic contamination in the disciplines of environmental science, fisheries, oceanography, geology, chemistry, biology and ocean science. Sections cover an overview of microplastic in the marine environment, deal with the origin, occurrences, distribution and various methodologies (for dealing with microplastics) available for microplastics, address the global case study of microplastic separation using recent techniques, and discuss the impact of microplastics on human health and the surrounding environment. This book is an important step in the field of microplastic pollution mitigation in environmental science as it offers a thorough accounting of the effects of pollutants on the environment, marine organisms, and the public health implications, as such it is relevant for aquatic ecologists, oceanographers, toxicologists, and marine biologists.

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.

By reimagining how we design and use our gardens, we can all do our bit to support local wildlife, improve our health and help tackle the climate crisis. If we all take positive steps in our gardens, no matter how small, we can all really make a difference in the world. This book focuses on the activities and planting suitable for a Scottish climate but also contains lots of useful information relevant for gardeners throughout the UK. Practical information on planning is followed by expert guidance on: Planting for wildlife in nectar-rich borders, wildflower meadows, hedgerows, trees and shrubs Building for wildlife with bird boxes, bug boxes, feeders and ponds Green gardening approaches with fruit and veg production, rain gardens, green roofs, compost making and creating new plants through propagation Attracting birds, bees, butterflies and other insects, aquatic life and nightlife

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.

This edited volume addresses a rising concern among natural resource scientists and management professionals about decline of the many plant and animal species associated with early-successional habitats, especially within the Central Hardwood Region of the USA. These open habitats, with herbaceous, shrub, or young forest cover, are disappearing as abandoned farmland, pastures, and cleared forest patches return to forest. There are many questions about "why, what, where, and how" to manage for early successional habitats. In this book, expert scientists and experienced land managers synthesize knowledge and original scientific work to address questions on such topics as wildlife, water, carbon sequestration, natural versus managed disturbance, future scenarios, and sustainable creation and management of early successional habitat in a landscape context.

From Rocky Mountain National Park in Colorado to the Tallgrass Prairie National Preserve in Kansas, this volume provides a snapshot of the most spectacular and important natural places in the Great Plains and Rocky Mountains. America's Natural Places: Rocky Mountains and Great Plains 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 Rocky Mountains and Great Plains and identifies places that may be near them that demonstrate the importance of preserving such regions.

Her first night in a Tanzanian tent began with a prowling lion’s roar. Will the savage terrors open her eyes to an unseen world?

Sue Tidwell lived in awe of Africa’s extraordinary wildlife. After years spent appreciating the animals in her imagination, the tenderhearted American hated the idea of joining her husband on a big game hunt. And getting attacked by blood-sucking tsetse flies the moment she stepped off the plane gave no hint of the mind-blowing change of perspective in her future…

With her initial animosity turning into curiosity as they breathlessly tracked dangerous beasts, Sue formed a surprising bond with their young, government-assigned game scout. And as she became entranced by the tales and wisdom from the Masimba Camp crew, she was humbled by the mystery of the vilified safari and the people who relied on it for survival.

Supplementing her own experiences on the elephant-rutted roads with local insights and scientific research into conservation efforts, Tidwell explores how her preconceived beliefs sluiced away under the deluge of reality. And with an evocative narrative peppered with self-deprecating humor, vivid imagery, and over ninety photos and illustrations, you’ll emerge forever changed by the truths this greenhorn found buried in a rugged and romantic landscape.

The Bahia Blanca Estuary is one of the largest coastal systems in Atlantic South America. This mesotidal estuary, situated in a sharp transition between humid subtropical and semiarid climates, has a unique combination of large interannual climatic variations. The estuarine area encompasses roughly 2300 square kilometers and is composed of wide expanses of intertidal flats, salt marshes, and emerged islands, which create intricate landscape patterns. Natural environments in the estuary sustain a high concentration of marine and terrestrial species, including endemic, threatened, and endangered fish and shorebirds. Puerto Cuatreros, in the inner zone of the estuary, hosts a permanent marine research station, whose records span more than 30 years of biophysical variables, and represent one of the largest time series of ecological data in South America. Beyond its ecological relevance, the Bahia Blanca Estuary is under increasing anthropogenic pressure from large urban settlements, industrial developments and harbors, raising the question of how to balance conservation and development. The Bahia Blanca Estuary: Ecology and Biodiversity offers a comprehensive review of life in the ecosystems of the estuary. The book is divided into five major sections, the first of which provides a description of the regional setting and covers key aspects of estuarine dynamics. The three following sections are dedicated to different habitat types and, within each section, the chapters are organized around major functional groups from pelagic and benthic environments. The fifth and final section covers issues related to management and conservation. Overall, the book provides essential and up-to-date reference material on the biodiversity and ecosystem processes of the Bahia Blanca Estuary, and will appeal to a broad international audience.

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.

The definitive textbook for students of wildlife management, now updated to cover the latest techniques, tools, and topics. Wildlife Management and Conservation presents a clear overview of the management and conservation of animals, their habitats, and how people influence both. The relationship among these three components of wildlife management is explained in chapters written by leading experts and is designed to prepare students for careers in which they will be charged with maintaining healthy animal populations. To be successful wildlife professionals, they will need to find ways to restore depleted populations, reduce overabundant, introduced, or pest species, and manage relationships among various human stakeholders. This book gives them the basic knowledge necessary to accomplish these goals. This second edition, which is updated throughout, features several new and expanded topics, including communication in the wildlife profession, fire science, Indigenous models of management and conservation, plant-animal interactions, quantitative analysis of wildlife populations, and a detailed glossary. The book also covers: * Human dimensions of wildlife management * Animal behavior * Predator-prey relationships * Structured decision making * Issues of scale in wildlife management * Wildlife health * Historical context of wildlife management and conservation * Hunting and trapping * Nongame species * Nutrition ecology * Water management * Climate change * Conservation planning The most widely used foundational text in the field, this is the perfect resource not only for students but also for early career professionals and those in related fields who need to understand the core tenets and tools of wildlife conservation and management. Contributors: C. Jane Anderson, Bart M. Ballard, Warren B. Ballard, John A. Bissonette, Clint Boal, Scott B. Boyle, Leonard A. Brennan, Robert D. Brown, James W. Cain III, Tyler A. Campbell, Michael J. Cherry, Michael R. Conover, Daniel J. Decker, Randall W. DeYoung, Jonathan B. Dinkins, W. Sue Fairbanks, Selma N. Glasscock, James B. Grand, Michael J. Haney, James R. Heffelfinger, Scott E. Henke, Fidel Hernandez, Davie G. Hewitt, C. L. Hoving, David A. Jessup, Heather E. Johnson, Winifred B. Kessler, John L. Koprowski, Paul R. Krausman, William P. Kuvlesky, Jr., Roel R. Lopez, R. W. Mannan, Melissa J. Merrick, L. Scott Mills, Michael S. Mitchell, Michael L. Morrison, Anna M. Munoz, John F. Organ, Katherine L. Parker, William F. Porter, Shawn J. Riley, Steven S. Rosenstock, Michael C. Runge, Susan P. Rupp, William F. Siemer, Robert J. Steidl, Kelley M. Stewart