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This book synthesizes the findings from the NSF-funded Arctic LTER project based in Toolik Lake, Alaska, a site that has been active since the mid-1970s. The book presents research concerning the core issues of climate-change science, and addresses the treeless regions of arctic Alaska, as well as the adjoining boreal forests. The book examines both terrestrial and freshwater-aquatic ecosystems, and their three typical habitats: tundra, streams and lakes. The book provides a history of the Toolik Lake LTER site, and discusses its present condition and future outlook. The chapters create a multidisciplinary survey of the Alaskan arctic ecosystem. Topics include glacial history, climatology, land-water interactions, mercury found in the Alaskan arctic, and the response of lakes to environmental change. The final chapter brings together these findings in order to make predictions regarding the consequences that arctic Alaska faces due to global warming and climate change, and discusses the future of the LTER site in the region.

Why do so many Americans reject the modern theory of evolution? Seeking answers, the author became a regular attendee at creationist conferences and other gatherings. After ten years of attending events like the giant Creation Mega-Conference in Lynchburg, Virginia, and visiting sites like the Creation Museum in Petersburg, Kentucky, and after hundreds of mostly friendly conversations with creationists of varying stripes, he has emerged with a story to tell, a story that goes well beyond the usual stereotypes of Bible-thumping fanatics railing against coldly rational scientists. Through anecdotes, personal reflections, and scientific and philosophical discussion, the author presents a more down-to-earth picture of modern creationism and the people who espouse it. He also tells the story of his own nonbeliever's attempt to understand a major aspect of American religion. Forced to wrestle with his views about religion and science, the author found himself drawn into a new world of ideas previously unknown to him, arriving at a sharper understanding of the reality of science versus religion disputes, and how these debates look to those beyond the ivory tower.

This work examines the wonders of animal athletics, both from an ecological perspective and from an evolutionary perspective. Animals are remarkable for their amazing abilities to perform tasks such as running, jumping, feeding, vocalization, and others. Many of these abilities far exceed what humans can accomplish, such as the ability of a rattlesnake to shake its tail at 90 Hz, or the ability of a mako shark to swim 50 km/h! These remarkable abilities have evolved to enable these animals to survive, often within very harsh conditions. This book examines how such abilities have evolved, how they are used in nature, and how they relate to many other features, such as sexual traits, reproduction, and the need to perform other tasks well. Further, this book examines how modern portable technology is enabling scientists to unlock many of the mysteries of how and why animals perform such tasks. By examining a wide range of animal species, including lizards, sharks, insects, spiders, mammals, and birds, among others, this book is a broad survey of the diversity of animal form and function.

This book provides a synthesis of the physical, physiological, evolutionary, and biomechanical principles that underlie animal locomotion. An understanding and full appreciation of animal locomotion requires the integration of these principles. Toward this end, we provide the necessary introductory foundation that will allow a more in-depth understanding of the physical biology and physiology of animal movement. In so doing, we hope that this book will illuminate the fundamentals and breadth of these systems, while inspiring our readers to look more deeply into the scientific literature and investigate new features of animal movement. Several themes run through this book. The first is that by comparing the modes and mechanisms by which animals have evolved the capacity for movement, we can understand the common principles that underlie each mode of locomotion. A second is that size matters. One of the most amazing aspects of biology is the enormous spatial and temporal scale over which organisms and biological processes operate. Within each mode of locomotion, animals have evolved designs and mechanisms that effectively contend with the physical properties and forces imposed on them by their environment. Understanding the constraints of scale that underlie locomotor mechanisms is essential to appreciating how these mechanisms have evolved and how they operate. A third theme is the importance of taking an integrative and comparative evolutionary approach in the study of biology. Organisms share much in common. Much of their molecular and cellular machinery is the same. They also must navigate similar physical properties of their environment. Consequently, an integrative approach to organismal function that spans multiple levels of biological organization provides a strong understanding of animal locomotion. By comparing across species, common principles of design emerge. Such comparisons also highlight how certain organisms may differ and point to strategies that have evolved for movement in diverse environments. Finally, because convergence upon common designs and the generation of new designs result from historical processes governed by natural selection, it is also important that we ask how and why these systems have evolved.

This book takes a broad approach to animal movement across both temporal and spatial scales. Movement and migration on land, in the air, and in water are pervading features of animal life—from the smallest protozoans to the largest whales—and can extend from millimetres to global scale. Research into animal movement ecology is now entering a new era with the development of novel molecular, electronic, and technical methods that make it possible to analyse the movements of individual animals under complex environmental conditions that determine the evolution of movement habits. This book addresses how and why animals move and in what ways they differ in their locomotion and navigation performance. The book also synthesizes current knowledge of the genetics of movement/migration, including gene flow and local adaptations. Based on long-term data sets, a future perspective on how patterns of animal migration may change over time together with the potential evolutionary consequences is provided. Throughout it is suggested that optimization is a useful approach for understanding the evolution of movement patterns among different animals as well as their travelling performance, movement strategies, and paths followed. Taking movement, dispersal, and migration into account is crucial for understanding the spatial scale of adaptation, and for analysing the consequences on population and community levels of landscape and climate change, as well as of invasive species.

From scorching, barren deserts to humid tropical forests, from deep in the soil, to high in the tree canopies, ants are everywhere! Comprising a substantial part of living biomass on earth, ants are integral to the functioning of terrestrial ecosystems. More than 12,000 species have been described to date, and it is estimated that perhaps as many still await classification. Their social structure provides a rich ground for exploring how division of labour affects the acquisition of resources, foraging and defensive behaviours, and coevolution with the flora and fauna with which they interact. The study of ants has led to significant advances in our understanding of insect evolution, global diversity patterns, competitive interactions, mutualisms, ecosystem's responses to change, and biological invasions. Ant Ecology explores these and other key ecological issues and new developments in myrmecology across a range of scales. The book begins with a global perspective on species diversity in time and space and explores interactions at the community level before describing the population ecology of these social insects. The final section covers the recent ecological phenomenon of invasive ants: how they move across the globe, invade, affect ecosystems, and are managed by humans. Each chapter links ant ecology to broader ecological principles, provides a succinct summary, and discusses future research directions. The Synthesis and Perspectives highlights contributions of ant ecology to ecology more broadly, and outlines promising areas for future research.

Antarctica possesses a remarkably diverse range of lakes, including freshwater and saline lakes (some as salty as the Dead Sea), tidal freshwater lakes (epishelf lakes), lakes on ice shelves and glacier surfaces, and an extraordinary network of lakes beneath the polar ice sheet, the so-called subglacial lakes. Unlike lakes at lower latitudes which in some cases have been subject to more than a century of study, Antarctic limnology is a recent discipline. It was not until the International Geophysical Year (1957–1958) that investigations on Antarctic lakes began to take off. This book is the first to draw together current knowledge on the geomorphology, morphometry, chemistry, community structure, and functioning of these delicate unproductive ecosystems. The communities of Antarctic lakes are truncated and dominated by microorganisms, reflecting the extreme nature of these ecosystems. They lack fish and have a limited metazoan component. The first chapter provides an introduction to Antarctic limnology and a basis for understanding subsequent chapters which detail each lake type. The polar regions are experiencing greater warming than lower latitudes, and Antarctic lakes are widely regarded as sentinels of local and global climate change. This important aspect is embedded throughout the book. The last chapter considers the application of new technologies to polar limnology, identifying areas for future research directions.

As natural habitat continues to be lost and the world steadily becomes more urbanized, biologists are increasingly studying the effect this has on wildlife. Birds are particularly good model systems since their life history, behaviour, and physiology are especially influenced by directly measurable environmental factors such as light and sound pollution. It is therefore relatively easy to compare urban individuals and populations with their rural counterparts. This text focuses on the behavioural and physiological mechanisms which facilitate adaptation and on the evolutionary process that ensues. It discusses topics such as acoustics, reproductive cues, disease, and artificial feeding, and includes a series of case studies illustrating cutting-edge research on these areas.

How will biodiversity loss affect ecosystem functioning, ecosystem services, and human wellbeing? In an age of accelerating biodiversity loss, this volume summarizes recent advances in biodiversity‐ecosystem functioning research and explores the economics of biodiversity and ecosystem services. The first section summarizes the development of the basic science and provides a meta-analysis that quantitatively tests several biodiversity and ecosystem functioning hypotheses. The second section describes the natural science foundations of biodiversity‐ecosystem functioning research, including: quantifying functional diversity, the development of the field into a predictive science, effects of stability and complexity, methods to quantify mechanisms by which diversity affects functioning, the importance of trophic structure, microbial ecology, and spatial dynamics. The third section takes research on biodiversity and ecosystem functioning further than it has ever gone into the human dimension. The first six chapters cover the most pressing environmental challenges humanity faces, including effects of diversity on: climate change mitigation, restoration of degraded habitats, managed ecosystems, pollination, disease, and biological invasions. The remaining chapters of section three that consider the economic perspective, including: a synthesis of the economics of ecosystem services and biodiversity, and the options open to policy-makers to address the failure of markets to account for the loss of ecosystem services; an examination of the challenges of valuing ecosystem services and, hence, to understanding the human consequences of decisions that neglect these services; and an examination of the ways in which economists are currently incorporating biodiversity and ecosystem functioning research into decision models for the conservation and management of biodiversity. The final section describes new advances in ecoinformatics that will help transform this field into a globally predictive science, and finally, summarizes the advancements and future directions of the field. The book's ultimate conclusion is that biodiversity is an essential element of any strategy for sustainable development.

Bioinvasions and Globalization synthesises our current knowledge of the ecology and economics of biological invasions, providing an in-depth evaluation of the science and its implications for managing the causes and consequences of one of the most pressing environmental issues facing humanity today. Emergent zoonotic diseases such as HIV and SARS have already imposed major costs in terms of human health, whilst plant and animal pathogens have had similar effects on agriculture, forestry, and fisheries. The introduction of pests, predators, and competitors into many ecosystems has disrupted the benefits they provide to people, in many cases leading to the extirpation or even extinction of native species. This book analyzes the main drivers of bioinvasions — the growth of world trade, global transport and travel, habitat conversion and land-use intensification, and climate change — and their consequences for ecosystem functioning. It shows how bioinvasions impose disproportionately high costs on countries where a large proportion of people depend heavily on the exploitation of natural resources. It considers the options for improving assessment and management of invasive species risks, and especially for achieving the international cooperation needed to address bioinvasions as a negative externality of international trade.

Savannahs are one of the largest biomes of the world, comprising about 20% of the land surface. Stated simply, they are tropical and subtropical grasslands, with scattered bushes and trees. Most savannah occurs in Africa, with a smaller amount in South America, India, and Australia. This book looks at: (1) the climate factors that determine the distribution of savannahs worldwide and briefly looks at savannahs in South America, Australia, India, and Africa; (2) the major plants (grasses, and trees such as Acacia) and large animals (mainly large mammals) that live in African savannahs; and (3) the biological and ecological factors that influence their population size, interactions (such as predation), and community composition. Conservation issues such as tourism, hunting, and the conflict between wildlife and farmers are discussed.

Savannahs are one of the largest biomes of the world, covering about 20% of the land surface. Stated simply, they are tropical and subtropical grasslands, with scattered bushes and trees. Most savannah occurs in Africa, with smaller areas in South America, India, and Australia. This book looks at; the climate factors that determine the distribution of savannahs worldwide, in South America, Australia, and India as well as Africa; the major plants (grasses, and trees such as Acacia) and large animals (mainly large mammals) that live in African savannahs; the biological and ecological factors that influence their population size, interactions (such as predation), and community composition. Conservation issues such as tourism, hunting, and the conflict between wildlife and farmers are discussed.

The Biology of Agroecosystems provides an introduction to the biological and ecological attributes of ecosystems and the biological impacts of agriculture on the wider environment. Global human populations are rising and diets are becoming ever more complicated, leading to requirements for increased levels of food production. Natural biotopes are becoming increasingly fragmented as agricultural activities expand around them. Agroecosystems occur from the tropics to subarctic environments and comprise systems as varied as annual crops, perennial grasslands, orchards, and agroforestry systems. They presently cover almost 40 per cent of the terrestrial land surface and significantly shape landscapes at a global scale. The book outlines the origin and development of agriculture and summarizes the characteristics of different types of agroecosystems. The conflicts between management of land for productivity and conservation of natural resources are discussed, and some of the key biological issues (loss of biodiversity, instability, susceptibility to pests, for example) are explored. Individual chapters introduce the role of functional groups such as pollinators, nutrient cycling organisms, and pest regulators; the importance of soils and soil organisms for agriculture; and the biological impacts of water use in agroecosystems. Globalization of agriculture is explored, and includes drivers of change, such as shifting diets, and biological challenges, such as the spread of pest species. The final chapters outline different management methods for sustainable management of agroecosystems, and consider the future challenges and opportunities for agriculture and the biology of agroecosystems.

Caves and other subterranean habitats with their often strange (even bizarre) inhabitants have long been objects of fascination, curiosity, and debate. The question of how such organisms have evolved, and the relative roles of natural selection and genetic drift, has engaged subterranean biologists for decades. Indeed, these studies continue to inform the general theory of adaptation and evolution. Subterranean ecosystems generally exhibit little or no primary productivity and, as extreme ecosystems, provide general insights into ecosystem function. The Biology of Caves and other Subterranean Habitats offers a concise but comprehensive introduction to cave ecology and evolution. Whilst there is an emphasis on biological processes occurring in these unique environments, conservation and management aspects are also considered. The monograph includes a global range of examples from more than 25 countries, and case studies from both caves and non-cave subterranean habitats; it also provides a clear explanation of specialized terms used by speleologists. This accessible text will appeal to researchers new to the field and to the many professional ecologists and conservation practitioners requiring a concise but authoritative overview. Its engaging style will also make it suitable for undergraduate and graduate students taking courses in cave and subterranean biology. Its more than 650 references, 150 of which are new since the first edition, provide many entry points to the research literature.

Coral reefs represent the most spectacular and diverse marine ecosystem on the planet as well as a critical source of protein and income for many millions of people. Ecologically they are as complex as they are diverse and colourful. However, the combined effects of human activities have led to a rapid decline worldwide in the health of reefs. This timely book provides an integrated overview of the function, physiology, ecology and behaviour of coral reef organisms. Each chapter is enriched with a selection of ‘boxes’ on specific aspects written by internationally recognized experts. As with other books in the Biology of Habitats Series, the emphasis in this book is on the organisms that dominate this marine environment, although pollution, conservation, climate change and experimental aspects are also included. Indeed, particular emphasis is placed on conservation and management due to the habitat’s critically endangered status. A global range of examples is employed which gives the book international relevance. This accessible text is intended for students, naturalists and professionals and assumes no previous knowledge of coral reef biology. It is particularly suitable for both senior undergraduate and graduate students (in departments of biology, geography, and environmental science) taking courses in coral reef ecology, marine biology, oceanography and conservation biology, as well as the many professional ecologists and conservation biologists requiring a concise overview of the topic. It will also be of relevance and use to reef managers, recreational divers and amateur naturalists.

This book offers a concise but comprehensive introduction to desert ecology, and adopts a strong evolutionary focus. As with other titles in the Biology of Habitats Series, the emphasis in the book is on the organisms that dominate this harsh environment, although conservation and experimental aspects are also considered. Deserts are defined by their arid conditions; a consequence of this aridity is that most of the area occupied by desert is barren and monotonous, leading many people to regard it as wasteland. However, deserts are widespread and represent surprisingly biodiverse environments, although it is the relative simplicity of these ecosystems that makes them more tractable for study than more complex environments. In these resource-poor locations, natural selection is working at its greatest extreme, and provides some of the best-known examples of Darwinian selection. The Biology of Deserts includes a wide range of ecological and evolutionary issues, including morphological and physiological adaptations of desert plants and animals, species interactions, the importance of predation and parasitism, food webs, biodiversity, and conservation. It features a balance of plant and animal (both invertebrate and vertebrate) examples, and also emphasizes topical applied issues such as desertification and invasive species. The book concludes by considering the positive aspects of desert conservation.

This book offers a concise but comprehensive introduction to desert ecology and adopts a strong evolutionary and applied focus. Deserts are defined by their arid conditions. Deserts are widespread and represent surprisingly diverse environments, although it is their relative simplicity that makes them more tractable for study than more mesic environments. In these resource-poor environments, natural selection is working at its most extreme and provides some of the best-known examples of natural selection. This book covers a wide range of ecological and evolutionary issues including morphological and physiological adaptations of desert plants and animals, species interactions, the importance of competition, facilitation, predation and parasitism, food webs, biodiversity, and conservation. This book features a balance of plant and animal examples, and also addresses topical applied issues such as desertification and invasive species. In this edition, considerable attention is also focused on the effects of climate change and some of its likely effects on deserts. Too much emphasis has been placed on global warming and not global changes per se. While ultimately the world will continue to heat up as fossil fuels are burned, many people struggle to understand that it is human-induced changes in the world rather than a simple case of warming that is likely to occur. Thus, greater variations in temperature and rainfall are also consequences of the ways that we are altering our world. Among these varied effects, desertification is often among the most egregious, leading ultimately to the increasing size of arid and semi-arid regions.

This book is a global synthesis of the concepts needed to understand and manage ecological responses to all types of terrestrial and aquatic disturbances. Natural disturbances such as volcanoes, earthquakes, landslides, fires, floods, and droughts, in addition to human-caused disturbances such as mining, urbanization, forestry, agriculture, fishing, and recreation cause the abrupt loss of biomass or ecosystem structure. Plants, animals, and microbes respond by invading and forming communities that change over time in a process called succession. The book explores how nutrients and productivity are altered in disturbed habitats, how biodiversity changes, and how the suite of colonizers changes over time, sometimes creating novel ecosystems with a variable mix of native and non-native species. Disturbance responses can be managed through appropriate conservation and restoration measures, but climate change and overpopulation present the most challenging disturbances at a global scale.

Global wetlands exhibit significant differences in both hydrology and species composition, and range from moss-dominated arctic peatlands to seasonally flooded tropical floodplains. They are increasingly recognised for the important services that they provide to both the environment and human society such as wildlife and fish production, nutrient filtering, and carbon sequestration. A combination of low oxygen levels and dense plant canopies present particular challenges for organisms living in this aquatic habitat. This book discusses the universal environmental and biological features of wetland habitats, with an emphasis on wetland plants and animals and their adaptations. It also describes the functional features of wetlands — primary production, litter decomposition, food webs, and nutrient cycling — and their significance locally and globally. The future of wetlands is examined, including the potential threats of global climate change and invasive species, as well as their restoration and creation.

This accessible text provides a concise but comprehensive introduction to the biology of global grasslands. Grasslands are vast in their extent, with native and non-native grasslands now covering approximately 50 percent of the global terrestrial environment. They are also of vital importance to humans, providing essential ecosystem services and some of the most important areas for the production of food and fibre worldwide. It has been estimated that 60 percent of calories consumed by humans originate from grasses, and most grain consumed is produced in areas that were formerly grasslands or wetlands. Grasslands are also important because they are used to raise forage for livestock, represent a source of biofuels, sequester vast amounts of carbon, provide urban green-space, and hold vast amounts of biodiversity. Intact grasslands contain an incredibly fascinating set of plants, animals, and microbes that have interested several generations of biologists, generating pivotal studies to important theoretical questions in ecology. As with other titles in the Biology of Habitats Series, the emphasis is on the organisms that dominate this environment although restoration, conservation, and experimental aspects are also considered. The Biology of Grasslands is suitable for both senior undergraduate and graduate students (in departments of biology, geography, and environmental science) taking courses in grassland ecology, plant ecology, and rangeland ecology as well as the many professional ecologists and conservation biologists requiring an authoritative overview of the topic.