In 1962 the Green River was poisoned and its native fishes killed so that the new Flaming Gorge Reservoir could be stocked with non-native game fishes for sportsmen. This incident was representative of water management in the West, where dams and other projects have been built to serve human needs without consideration for the effects of water diversion or depletion on the ecosystem. Indeed, it took a Supreme Court decision in 1976 to save Devils Hole pupfish from habitat destruction at the hands of developers.
 
Nearly a third of the native fish fauna of North America lives in the arid West; this book traces their decline toward extinction as a result of human interference and the threat to their genetic diversity posed by decreases in their populations. What can be done to slow or end this tragedy? As the most comprehensive treatment ever attempted on the subject, Battle Against Extinction shows how conservation efforts have been or can be used to reverse these trends.
 
In covering fishes in arid lands west of the Mississippi Valley, the contributors provide a species-by-species appraisal of their status and potential for recovery, bringing together in one volume nearly all of the scattered literature on western fishes to produce a monumental work in conservation biology. They also ponder ethical considerations related to the issue, ask why conservation efforts have not proceeded at a proper pace, and suggest how native fish protection relates to other aspects of biodiversity planetwide. Their insights will allow scientific and public agencies to evaluate future management of these animal populations and will offer additional guidance for those active in water rights and conservation biology.

University students in natural resource science programs, resource managers, conservation organizations, and anyone curious about carnivore ecology and management in a changing world will find a thoughtful guide to large carnivore conservation that dispels long-held myths about their ecology and contributions to healthy, resilient landscapes.

As in the rest of the United States, grizzly bears, wolves, and mountain lions in and around Yellowstone National Park were eliminated or reduced decades ago to very low numbers. In recent years, however, populations have begun to recover, leading to encounters between animals and people and, more significantly, to conflicts among people about what to do with these often controversial neighbors.

Coexisting with Large Carnivores presents a close-up look at the socio-political context of large carnivores and their management in western Wyoming south of Yellowstone National Park, including the southern part of what is commonly recognized as the Greater Yellowstone Ecosystem. The book brings together researchers and others who have studied and worked in the region to help untangle some of the highly charged issues associated with large carnivores, their interactions with humans, and the politics that arise from those interactions.

This volume argues that coexistence will be achieved only by a thorough understanding of the human populations involved, their values, attitudes, beliefs, and the institutions through which carnivores and humans are managed. Coexisting with Large Carnivores offers important insights into this complex, dynamic issue and provides a unique overview of issues and strategies for managers, researchers, government officials, ranchers, and everyone else concerned about the management and conservation of large carnivores and the people who live nearby.

Some ecosystem management plans established by state and federal agencies have begun to shift their focus away from single-species conservation to a broader goal of protecting a wide range of flora and fauna, including species whose numbers are scarce or about which there is little scientific understanding. To date, these efforts have proved extremely costly and complex to implement. Are there alternative approaches to protecting rare or little-known species that can be more effective and less burdensome than current efforts?

Conservation of Rare or Little-Known Species represents the first comprehensive scientific evaluation of approaches and management options for protecting rare or little-known terrestrial species. The book brings together leading ecologists, biologists, botanists, economists, and sociologists to classify approaches, summarize their theoretical and conceptual foundations, evaluate their efficacy, and review how each has been used.

Contributors consider combinations of species and systems approaches for overall effectiveness in meeting conservation and ecosystem sustainability goals. They discuss the biological, legal, sociological, political, administrative, and economic dimensions by which conservation strategies can be gauged, in an effort to help managers determine which strategy or combination of strategies is most likely to meet their needs. Contributors also discuss practical considerations of implementing various strategies.

Conservation of Rare or Little-Known Species gives land managers access to a diverse literature and provides them with the basic information they need to select approaches that best suit their conservation objectives and ecological context. It is an important new work for anyone involved with developing land management or conservation plans.

When migrating birds and other creatures move along a path of plant communities in bloom, they follow what has come to be known as a nectar trail. Should any of these plants be eliminated from the sequence—whether through habitat destruction, pests, or even aberrant weather—the movement of these pollinators may be interrupted and their very survival threatened. In recent efforts by ecologists and activists to envision a continental-scale network of protected areas connected by wildlife corridors, the peculiar roles of migratory pollinators which travel the entire length of this network cannot be underestimated in shaping the ultimate conservation design.

This book, a unique work of comparative zoogeography and conservation biology, is the first to bring together studies of these important migratory pollinators and of what we must do to conserve them. It considers the similarities and differences among the behavior and habitat requirements of several species of migratory pollinators and seed dispersers in the West—primarily rufous hummingbirds, white-winged doves, lesser long-nosed bats, and monarch butterflies. It examines the population dynamics of these four species in flyways that extend from the Pacific Ocean to the continental backbone of the Sierra Madre Oriental and Rocky Mountains, and it investigates their foraging and roosting behaviors as they journey from the Tropic of Cancer in western Mexico into the deserts, grasslands, and thornscrub of the U.S.-Mexico borderlands. The four pollinators whose journeys are traced here differ dramatically from one another in foraging strategies and stopover fidelities, but all challenge many of the truisms that have emerged regarding the status of migratory species in general. The rufous hummingbird makes the longest known avian migration in relation to body size and is a key to identifying nectar corridors running through northwestern Mexico to the United States. And there is new evidence to challenge the long-supposed separation of eastern and western monarch butterfly populations by the Rocky Mountains as these insects migrate.

Conserving Migratory Pollinators and Nectar Corridors in Western North America demonstrates new efforts to understand migratory species and to determine whether their densities, survival rates, and health are changing in response to changes in the distribution and abundance of nectar plants found within their ranges. Representing collaborative efforts that bridge field ecology and conservation biology in both theory and practice, it is dedicated to safeguarding dynamic interactions among plants and pollinators that are only now being identified.

As part of a global effort to identify those areas where conservation measures are needed most urgently, World Wildlife Fund has assembled teams of scientists to conduct ecological assessments of all seven continents. Freshwater Ecoregions of Africa and Madagascar is the latest contribution, presenting in a single volume the first in-depth analysis of the state of freshwater biodiversity across Africa, Madagascar, and the islands of the region. Looking at biodiversity and threats in terms of biological units rather than political units, the book offers a comprehensive examination of the entire range of aquatic systems.

In addition to its six main chapters, the book includes nineteen essays by regional experts that provide more depth on key issues, as well as six detailed appendixes that present summary data used in the analyses, specific analytical methodologies, and a thorough text description for each of Africa's ninety-three freshwater ecoregions.

Freshwater Ecoregions of Africa and Madagascar provides a blueprint for conservation action and represents an unparalleled guide for investments and activities of conservation agencies and donor organizations.

Few places in the world can claim such a diversity of species as the Gulf of California (Sea of Cortez), with its 6,000 recorded animal species estimated to be half the number actually living in its waters. So rich are the Gulf's water that over a half-million tons of seafood are taken from them annually—and this figure does not count the wasted by-catch, which would triple or quadruple that tonnage. This timely book provides a benchmark for understanding the Gulf's extraordinary diversity, how it is threatened, and in what ways it is—or should be—protected.

In spite of its dazzling richness, most of the Gulf's coastline now harbors but a pale shadow of the diversity that existed just a half-century ago. Recommendations based on sound, careful science must guide Mexico in moving forward to protect the Gulf of California.

This edited volume contains contributions by twenty-four Gulf of California experts, from both sides of the U.S.-Mexico border. From the origins of the Gulf to its physical and chemical characteristics, from urgently needed conservation alternatives for fisheries and the entire Gulf ecosystem to information about its invertebrates, fishes, cetaceans, and sea turtles, this thought-provoking book provides new insights and clear paths to achieve sustainable use solidly based on robust science. The interdisciplinary, international cooperation involved in creating this much-needed collection provides a model for achieving success in answering critically important questions about a precious but rapidly disappearing ecological treasure.

Farmers and gardeners have long appreciated a wide variety of plants and have nurtured them for meals, healing, and exchange. But diversity too often has been surrendered to monocultures of fields and spirits, predisposing much of modern agriculture to uniformity and, consequently, vulnerability. Today it is primarily at the individual level—such as growing and saving a strange old bean variety or a curious-looking gourd—that any lasting conservation actually takes place.

As scientists grapple with the erosion of genetic diversity of crops and their wild relatives, old-timey farmers and gardeners continue to save, propagate, and pass on folk varieties and heirloom seeds. Virginia Nazarea focuses on the role of these seedsavers in the perpetuation of diversity. She thoughtfully examines the framework of scientific conservation and argues for the merits of everyday conservation—one that is beyond programmatic design. Whether considering small-scale rice and sweet potato farmers in the Philippines or participants in the Southern Seed Legacy and Introduced Germplasm from Vietnam in the American South, she explores roads not necessarily less traveled but certainly less recognized in the conservation of biodiversity.

Through characters and stories that offer a wealth of insights about human nature and society, Heirloom Seeds and Their Keepers helps readers more fully understand why biodiversity persists when there are so many pressures for it not to. The key, Nazarea explains, is in the sovereign spaces seedsavers inhabit and create, where memories counter a culture of forgetting and abandonment engendered by modernity. A book about theory as much as practice, it profiles these individuals, who march to their own beat in a world where diversity is increasingly devalued as the predictability of mass production becomes the norm.

Heirloom Seeds and Their Keepers offers a much-needed, scientifically researched perspective on the contribution of seedsaving that illustrates its critical significance to the preservation of both cultural knowledge and crop diversity around the world. It opens new conversations between anthropology and biology, and between researchers and practitioners, as it honors conservation as a way of life.

In the revised and expanded edition of this classic guide, Ralph W. Tiner introduces readers to the ecology and beauty of the wetlands in eastern North America. Topics include their formation and functions, wetland types, causes of loss and degradation, and recent efforts to protect them. The discussion now includes many examples from the Great Lakes region and information on best management practices for working in and around wetlands including vernal pools. A new chapter on classification and assessment further clarifies how the unique characteristics of these important natural resources serve specific functions.In Search of Swampland alsoprovides a field guide to wetland plants, soils, and animals. It includes detailed descriptions and illustrations—many of which are new to this edition—of more than 300 plants and 200 animals. Clear identification keys, information on how to distinguish typical hydric or “wet” soils from dryland soils, and general procedures for identifying wetlands in the field make this book an indispensable resource for readers with little or no training in wetland science, as well as for the scientist or amateur naturalist.

Invasive alien species are among today's most daunting environmental threats, costing billions of dollars in economic damages and wreaking havoc on ecosystems around the world. In 1997, a consortium of scientific organizations including SCOPE, IUCN, and CABI developed the Global Invasive Species Programme (GISP) with the explicit objective of providing new tools for understanding and coping with invasive alien species.

Invasive Alien Species is the final report of GISP's first phase of operation, 1997-2000, in which authorities from more than thirty countries worked to examine invasions as a worldwide environmental hazard. The book brings together the world's leading scientists and researchers involved with invasive alien species to offer a comprehensive summary and synthesis of the current state of knowledge on the subject.

Invasive alien species represent a critical threat to natural ecosystems and native biodiversity, as well as to human economic vitality and health. The knowledge gained to date in understanding and combating invasive alien species can form a useful basis on which to build strategies for controlling or minimizing the effects in the future. Invasive Alien Species is an essential reference for the international community of investigators concerned with biological invasions.

Large Carnivores and the Conservation of Biodiversity brings together more than thirty leading scientists and conservation practitioners to consider a key question in environmental conservation: Is the conservation of large carnivores in ecosystems that evolved with their presence equivalent to the conservation of biological diversity within those systems? Building their discussions from empirical, long-term data sets, contributors including James A. Estes, David S. Maehr, Tim McClanahan, Andrès J. Novaro, John Terborgh, and Rosie Woodroffe explore a variety of issues surrounding the link between predation and biodiversity: What is the evidence for or against the link? Is it stronger in marine systems? What are the implications for conservation strategies?

Large Carnivores and the Conservation of Biodiversity is the first detailed, broad-scale examination of the empirical evidence regarding the role of large carnivores in biodiversity conservation in both marine and terrestrial ecosystems. It contributes to a much more precise and global understanding of when, where, and whether protecting and restoring top predators will directly contribute to the conservation of biodiversity. Everyone concerned with ecology, biodiversity, or large carnivores will find this volume a unique and thought-provoking analysis and synthesis.

When the University of Arizona announced plans to build observatories on Mt. Graham, atop the Pinaleño Mountains, the construction was seen as a potential threat to an isolated species found only on this sky island. The Mt. Graham red squirrel was declared “endangered” by the US Fish and Wildlife Service. Legal action required the university to provide funds for research and monitoring the Mt. Graham red squirrel.

This book is derived from a symposium on the Mt. Graham red squirrel and offers a comprehensive picture of the ecology of this red squirrel and the impacts on its mountain home. Forty contributors detail studies conducted to understand the natural history of the creature and the challenges and changing ecological conditions on Mt. Graham.

Each chapter tells a unique story that contributes to the mosaic of natural history knowledge about the endangered Mt. Graham red squirrel. They reflect diverse viewpoints on the problems of conserving the habitats and populations of the squirrel, showing how it was complicated by perspectives ranging from Native Americans’ concern over traditional lands to astronomers’ hope for a better view of space, and by issues ranging from forestry practices to climate change. Studies of such factors as squirrel middens, seed hoarding, and nest sites provide definitive research on the animal.

Ongoing censuses continue to track the squirrel’s population trends, and both Forest Service and Arizona Department of Transportation activities continue to be scrutinized by interested parties to determine their impact. This book represents an authoritative overview of this still-endangered species and its habitat.

Old-growth forests represent a lofty ideal as much as an ecosystem—an icon of unspoiled nature, ecological stability, and pristine habitat. These iconic notions have actively altered the way society relates to old-growth forests, catalyzing major changes in policy and management. But how appropriate are those changes and how well do they really serve in reaching conservation goals?

Old Growth in a New World untangles the complexities of the old growth concept and the parallel complexity of old-growth policy and management. It brings together more than two dozen contributors—ecologists, economists, sociologists, managers, historians, silviculturists, environmentalists, timber producers, and philosophers—to offer a broad suite of perspectives on changes that have occurred in the valuing and management of old-growth forests in the Pacific Northwest over the past thirty years. The book

• introduces the issues and history of old-growth values and conservation in the Pacific Northwest;
• explores old growth through the ideas of leading ecologists and social scientists;
• addresses the implications for the future management of old-growth forests and considers how evolving science and social knowledge might be used to increase conservation effectiveness.

By confronting the complexity of the old-growth concept and associated policy and management challenges, Old Growth in a New World encourages productive discussion on the future of old growth in the Pacific Northwest and offers options for more effective approaches to conserving forest biodiversity.

About half of all species under threat of extinction in the world today are plants. The loss of plant biodiversity is disturbing for many reasons, but especially because it is a reflection of the growing disconnect between humans and nature. Plants have been used for millennia in traditional systems of healing and have held a significant place in drug development for Western medicine as well. Despite the recent dominance of synthetic drug production, natural product discovery remains the backbone of drug development. As the diversity of life on Earth is depleted and increasing numbers of species become lost to extinction, we continue to lose opportunities to achieve advances in medicine.

Through stories of drug revelation in nature and forays into botany, human behavior, and conservation, Kara Rogers sheds light on the multiple ways in which humans, medicine, and plants are interconnected. With accessible and engaging writing, she explores the relationships between humans and plants, relating the stories of plant hunters of centuries past and examining the impact of human activities on the environment and the world's biodiversity. Rogers also highlights the role that plant-based products can play in encouraging conservation and protecting the heritage and knowledge of indigenous peoples.

Out of Nature provides a fresh perspective on modern drug innovation and its relationship with nature. The book delves into the complexity of biophilia—the innate human attraction to life in the natural world—and suggests that the reawakening of this drive is fundamental to expanding conservation efforts and improving medicine. Rogers's examination of plants, humans, and drug discovery also conveys a passionate optimism for the future of biodiversity and medicine. Including a collection of hand-drawn maps and plant illustrations created by the author, this well-researched narrative will inspire as well as inform.
 

The environmental diversity of North America is astounding—from the circumpolar tundra with few plants more than a few centimeters tall to the lush, semitropical forests of the southeastern United States and Caribbean Basin. No less remarkable is the record of plants usage by the various indigenous people who have been living there for more than twelve millennia. For the vast majority of this time, their livelihood—food, shelter, fuel, and medicine—depended on their knowledge and use of the environment.

The most comprehensive overview in more than half a century about the interconnectedness of prehistoric Native Americans and their botanical world, this book and its forthcoming companion volume, People and Plants in Ancient Western North America, present the latest information on three major topics: the use of native plants, the history of crops and their uses, and how humans affected their environment. In this volume, expert scholars summarize the prehistoric ethnobotany of four regions: the Eastern Woodlands (W. Cowan, K. Gremillion, M. Scarry, B. Smith, and G. Wagner), Northeast (G. Crawford and D. Smith), Plains (M. Adair), and Caribbean (L. Newsom and D. Pearsall).

This volume contributes significantly to our understanding of the lives of prehistoric people as well as the forces that influenced their communities, their ingenuity, and their ecological impact. It also serves as a guide for designing environmentally sustainable lives today.

The environmental diversity of North America is astounding—from circumpolar tundra with a small number of plants more than a few centimeters tall to the lush semitropical forests of the southeastern United States and the Caribbean Basin. No less remarkable is the record of plant usage by the various indigenous peoples who have been living here for more than 12,000 years. For the vast majority of this time, their livelihood—food, shelter, fuel, and medicine—depended on their knowledge and use of the plants that surrounded them.

The most comprehensive overview in more than half a century on the interconnectedness of people and plants, this book and its companion volume, People and Plants in Ancient Eastern North America, present the latest information on three major topics: the uses of native plants, the history of crops and their uses, and the impact of humans on their environment. They not only contribute to our understanding of the lives of prehistoric people but also serve as guides for designing sustainable living today.

"People of the Desert and Sea is one of those books that should not have to wait a generation or two to be considered a classic. A feast for the eye as well as the mind, this ethnobotany of the Seri Indians of Sonora represents the most detailed exploration of plant use by a hunting-and-gathering people to date. . . . Scholarship in the best sense of the term—precise without being pedantic, exhaustive without exhausting its readers."—Journal of Arizona History

"To read and gaze through this elegantly illustrated book is to be exposed, as if through a work of science fiction, to an astonishing and unknown cultural world."—North Dakota Quarterly

 

Ranching is as much a part of the West as its wide-open spaces. The mystique of rugged individualism has sustained this activity well past the frontier era and has influenced how we view—and value—those open lands.

Nathan Sayre now takes a close look at how the ranching ideal has come into play in the conversion of a large tract of Arizona rangeland from private ranch to National Wildlife Refuge. He tells how the Buenos Aires Ranch, a working operation for a hundred years, became not only a rallying point for multiple agendas in the "rangeland conflict" after its conversion to a wildlife refuge but also an expression of the larger shift from agricultural to urban economies in the Southwest since World War II.

The U.S. Fish and Wildlife Service bought the Buenos Aires Ranch in 1985, removed all livestock, and attempted to restore the land to its "original" grassland in order to protect an endangered species, the masked bobwhite quail. Sayre examines the history of the ranch and the bobwhite together, exploring the interplay of social, economic, and ecological issues to show how ranchers and their cattle altered the land—for better or worse—during a century of ranching and how the masked bobwhite became a symbol for environmentalists who believe that the removal of cattle benefits rangelands and wildlife.

Sayre evaluates both sides of the Buenos Aires controversy—from ranching's impact on the environment to environmentalism's sometimes misguided efforts at restoration—to address the complex and contradictory roles of ranching, endangered species conservation, and urbanization in the social and environmental transformation of the West. He focuses on three dimensions of the Buenos Aires story: the land and its inhabitants, both human and animal; the role of government agencies in shaping range and wildlife management; and the various species of capital—economic, symbolic, and bureaucratic—that have structured the activities of ranchers, environmentalists, and government officials.

The creation of the Buenos Aires National Wildlife Refuge has been a symbolic victory for environmentalists, but it comes at the cost of implicitly legitimizing the ongoing fragmentation and suburbanization of Arizona's still-wild rangelands. Sayre reveals how the polarized politics of "the rangeland conflict" have bound the Fish and Wildlife Service to a narrow, ineffectual management strategy on the Buenos Aires, with greater attention paid to increasing tourism from birdwatchers than to the complex challenge of restoring the masked bobwhite and its habitat. His findings show that the urban boom of the late twentieth century echoed the cattle boom of a century before—capitalizing on land rather than grass, humans rather than cattle—in a book that will serve as a model for restoration efforts in any environment.

Information regarding population status and abundance of rare species plays a key role in resource management decisions. Ideally, data should be collected using statistically sound sampling methods, but by their very nature, rare or elusive species pose a difficult sampling challenge.

Sampling Rare or Elusive Species describes the latest sampling designs and survey methods for reliably estimating occupancy, abundance, and other population parameters of rare, elusive, or otherwise hard-to-detect plants and animals. It offers a mixture of theory and application, with actual examples from terrestrial, aquatic, and marine habitats around the world.

Sampling Rare or Elusive Species is the first volume devoted entirely to this topic and provides natural resource professionals with a suite of innovative approaches to gathering population status and trend data. It represents an invaluable reference for natural resource professionals around the world, including fish and wildlife biologists, ecologists, biometricians, natural resource managers, and all others whose work or research involves rare or elusive species.

It was through control of the shattering of wild seeds that humans first domesticated plants. Now control over those very plants threatens to shatter the world's food supply, as loss of genetic diversity sets the stage for widespread hunger.

Large-scale agriculture has come to favor uniformity in food crops. More than 7,000 U.S. apple varieties once grew in American orchards; 6,000 of them are no longer available. Every broccoli variety offered through seed catalogs in 1900 has now disappeared. As the international genetics supply industry absorbs seed companies—with nearly one thousand takeovers since 1970—this trend toward uniformity seems likely to continue; and as third world agriculture is brought in line with international business interests, the gene pools of humanity's most basic foods are threatened.

The consequences are more than culinary. Without the genetic diversity from which farmers traditionally breed for resistance to diseases, crops are more susceptible to the spread of pestilence. Tragedies like the Irish Potato Famine may be thought of today as ancient history; yet the U.S. corn blight of 1970 shows that technologically based agribusiness is a breeding ground for disaster.

Shattering reviews the development of genetic diversity over 10,000 years of human agriculture, then exposes its loss in our lifetime at the hands of political and economic forces. The possibility of crisis is real; this book shows that it may not be too late to avert it.

Sustaining Biodiversity and Ecosystem Services in Soils and Sediments brings together the world's leading ecologists, systematists, and evolutionary biologists to present scientific information that integrates soil and sediment disciplines across terrestrial, marine, and freshwater ecosystems. It offers a framework for a new discipline, one that will allow future scientists to consider the linkages of biodiversity below-surface, and how biota interact to provide the essential ecosystemservices needed for sustainable soils and sediments.

Contributors consider key-questions regarding soils and sediments and the relationship between soil- and sediment- dwelling organisms and overall ecosystem functioning. The book is an important new synthesis for scientists and researchers studying a range of topics, including global sustainability, conservation biology, taxonomy, erosion, extreme systems, food production, and related fields. In addition, it provides new insight and understanding for managers, policymakers, and others concerned with global environmental sustainability and global change issues.

Only a day's drive south of the U.S.-Mexico border, a tropical deciduous forest opens up a world of exotic trees and birds that most people associate with tropical forests of more southerly latitudes. Like many such forests around the world, this diverse ecosystem is highly threatened, especially by large-scale agricultural interests that are razing it in order to plant grass for cattle.

This book introduces the tropical deciduous forest of the Alamos region of Sonora, describing its biodiversity and the current threats to its existence. The book's contributors present the most up-to-date scientific knowledge of this threatened ecosystem. They review the natural history and ecology of its flora and fauna and explore how native peoples use the forest's many resources.

Included in the book's coverage is a comprehensive plant list for the Río Cuchujaqui area that well illustrates the diversity of the forest. Other contributions examine tree species used by Mayo Indians and the numerous varieties of domesticated plants that have been developed over the centuries by the Mayos and other indigenous peoples. Also examined are the diversity and distribution of reptiles, amphibians, mammals, and birds in the region.

The Tropical Deciduous Forest of Alamos provides critical information about a globally important biome. It complements other studies of similar forests and allows a better understanding of a diverse but vanishing ecosystem.

Let's get dirty. In childhood, the back yard, the flowerbed, the beach, the mucky place where land slips into puddles, lakes, and streams are infinitely fascinating. It is a mistake to leave that "childish" fascination with mud and dirt behind. The soils of the Earth, whether underneath our feet or pressurized beneath tons of ocean water, hold life in abundance. A handful of garden dirt may harbor more species than the entire aboveground Amazon.
 
The robotic rovers Spirit and Opportunity made headlines as they scraped their way across the Martian landscape, searching for signs of life. But while our eyes have been turned toward the skies, teeming beneath us and largely unexplored lies what Science magazine recently called the true "final frontier." A growing array of scientists is exploring life in soils and sediments, uncovering a living world literally alien to our own senses--and yet one whose integrity turns out to be crucial to life above ground.
 
Yvonne Baskin takes the reader from the polar desert of Antarctica to the coastal rain forests of Canada, from the rangelands of Yellowstone National Park to the vanishing wetlands of the Mississippi River basin, from Dutch pastures to English sounds, and beyond. She introduces exotic creatures--from bacteria and fungi to microscopic nematode worms, springtails, and mud shrimp--and shows us what scientists are learning about their contribution to sustaining a green and healthy world above ground. She also explores the alarming ways in which air pollution, trawl fishing, timber cutting, introductions of invasive species, wetland destruction, and the like threaten this underground diversity and how their loss, in turn, affects our own well being.
 
Two-thirds of the world's biological diversity exists in soils and underwater sediments, and yet most of us remain unaware of these tiny multitudes that run the planet beneath the scenes. In Under Ground, Baskin reveals the startling ways in which that life, whether in our own back yards, in fields and forests, or in the furthest reaches of the Earth, is more numerous, significant, and fascinating than we once imagined.

The Value of Life is an exploration of the actual and perceived importance of biological diversity for human beings and society. Stephen R. Kellert identifies ten basic values, which he describes as biologically based, inherent human tendencies that are greatly influenced and moderated by culture, learning, and experience. Drawing on 20 years of original research, he considers:

• the universal basis for how humans value nature
• differences in those values by gender, age, ethnicity, occupation, and geographic location
• how environment-related activities affect values
• variation in values relating to different species
• how vlaues vary across cultures
• policy and management implications

Throughout the book, Kellert argues that the preservation of biodiversity is fundamentally linked to human well-being in the largest sense as he illustrates the importance of biological diversity to the human sociocultural and psychological condition.

Animals such as wolves, sea otters, and sharks exert a disproportionate influence on their environment; dramatic ecological consequences can result when they are removed from—or returned to—an ecosystem.
 
In The Wolf's Tooth, scientist and author Cristina Eisenberg explores the concept of "trophic cascades" and the role of top predators in regulating ecosystems. Her fascinating and wide-ranging work provides clear explanations of the science surrounding keystone predators and considers how this notion can help provide practical solutions for restoring ecosystem health and functioning.
 
Eisenberg examines both general concepts and specific issues, sharing accounts from her own fieldwork to illustrate and bring to life the ideas she presents. She considers how resource managers can use knowledge about trophic cascades to guide recovery efforts, including how this science can be applied to move forward the bold vision of rewilding the North American continent. In the end, the author provides her own recommendations for local and landscape-scale applications of what has been learned about interactive food webs.
 
At their most fundamental level, trophic cascades are powerful stories about ecosystem processes—of predators and their prey, of what it takes to survive in a landscape, of the flow of nutrients. The Wolf's Tooth is the first book to focus on the vital connection between trophic cascades and restoring biodiversity and habitats, and to do so in a way that is accessible to a diverse readership.