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

One of the biggest management problems for forest landowners and managers is browsing by overabundant deer herds that simplifies habitat and reduces species composition and abundance of plant and wildlife communities. This book addresses deer biology, management of deer, and deer impact on private and public forestlands. It integrates information on deer biology and human dimensions aspects including culture, values, politics, and financial and human resources, into development and implementation of comprehensive management of people and deer. Additional audiences are wildlife educators, deer hunters, and administrators of natural resource agencies who affect deer density and impact on forest resources by regulating deer hunting. The book is written by wildlife and forestry scientists, consultants, managers, and educators with over 350 years of collective experience in managing deer impacts on forest resources. It includes nine case histories of deer management on forestlands ranging from small woodlots to large commercial operations and state/national forests. Praise for Deer Management for Forest Landowners and Managers: "If you're a forest landowner serious about managing your deer and woods this book is for you." Kip Adams, Quality Deer Management Association "This book is an extensive resource for deer and timber management and is a hands-on manual that includes extensive review of relevant literature. David Samuel, Bowhunter Magazine "This book provides definitive answers to the questions of how to accomplish deer management in ... the face of large deer populations. It belongs on the reading list of every forest landowner." William F. Porter Boone and Crockett Professor of Wildlife "It captures the wealth of knowledge of the authors who understand deer as hunters, ecologists, managers and scientists. It provides a leap forward in the who and how of deer and forest management." Peter Smallidge, Extension Forester "This is a must read for landowners, deer and forest managers, and those studying forest ecology." Merlin Benner, wildlife consultant "This book is a road map to restoring deer to their long-time place of balance, serving the common good for people and nature." Allen Pursell, The Nature Conservancy

In 1970, a group of young lawyers launched a new kind of organisation and helped secure the country's bedrock environmental laws. Ever since, the Natural Resources Defense Council (NRDC) has harnessed its legal and scientific expertise to become one of the fiercest protectors of public health and the environment. In this recounting of NRDC's 50-year history, cofounder John Adams tells the ongoing story about fighting the world's most powerful polluters and winning. Alongside archival photography and insider accounts, Adams celebrates a half century of victories, everything from saving whales to getting lead pipes out of Flint, Michigan, to protecting treasured landscapes, like Alaska's Katmai National Park & Preserve. But the book is also a road map for the future, offering hard-won lessons on how to tackle problems that lie at the intersection of science and society. Today, as humanity faces the climate crisis, the stakes have never been higher nor the solutions more complex which is why NRDC remains uniquely positioned as the earth's best defense.

Rewilding is the first popular book on the ground-breaking science behind the restoration of wild nature. As ecologists Paul Jepson and Cain Blythe show, rewilding is a new and progressive approach to conservation, blending radical scientific insights with practical innovations to revive ecological processes, benefiting people as well as nature. Its goal is to restore lost interactions between animals, plants and natural disturbance that are the essence of thriving ecosystems. With its sense of hope and purpose, rewilding is breathing new life into the conservation movement, and enabling a growing number of people - even urban-dwellers - to enjoy thrilling wildlife experiences previously accessible only in remote wilderness reserves. 'De-domesticated' horses galloping across a Dutch 'Serengeti'; beavers creating wetlands in the British countryside; giant tortoises restoring the wildlife of the Mauritian islands; perhaps one day even rhinos roaming the Australian outback - rewilding is full of exciting and inspirational possibilities.

SHORTLISTED FOR THE 2019 WAINWRIGHT BOOK PRIZE LONGLISTED FOR THE 2019 POLARI FIRST BOOK AWARD 'This is a book to get lost in . . . A disturbing trauma narrative, it's also a work of delightfully low, pants-dropping comedy, and a learned meditation' Guardian 'A brave and beautiful book, electrifying on sex and nature, religion and love. No one is writing quite like this' Olivia Laing 'Turns the nature memoir genre upon its head . . . is a book full of poetry and pathos. More than anything it is a bold and beautiful study of how to be a true modern man' Ben Myers, Spectator At a crossroads in his life, the demons Luke Turner has been battling since childhood are quick to return - depression and guilt surrounding his identity as a bisexual man, experiences of sexual abuse, and the religious upbringing that was the cause of so much confusion. It is among the trees of London's Epping Forest where he seeks refuge. Away from a society that struggles to cope with the complexities of masculinity and sexuality, Luke begins to accept the duality that has provoked so much unrest in his life - and reconcile the expectations of others with his own way of being.

AS FEATURED ON 'BBC RADIO 4 'GOOD READS'. Woodlands Awards 2019: Woodland Books of the Year 'The oak is the wooden tie between heaven and earth. It is the lynch pin of the British landscape.' The oak is our most beloved and most common tree. It has roots that stretch back to all the old European cultures but Britain has more ancient oaks than all the other European countries put together. More than half the ancient oaks in the world are in Britain. Many of our ancestors - the Angles, the Saxons, the Norse - came to the British Isles in longships made of oak. For centuries the oak touched every part of a Briton's life - from cradle to coffin It was oak that made the 'wooden walls' of Nelson's navy, and the navy that allowed Britain to rule the world. Even in the digital Apple age, the real oak has resonance - the word speaks of fortitude, antiquity, pastoralism. The Glorious Life of the Oak explores our long relationship with this iconic tree; it considers the life-cycle of the oak, the flora and fauna that depend on the oak, the oak as medicine, food and drink, where Britain's mightiest oaks can be found, and it tells of oak stories from folklore, myth and legend.

Large carnivores include iconic species such as bears, wolves and big cats. Their habitats are increasingly being shared with humans, and there is a growing number of examples of human-carnivore coexistence as well as conflict. Next to population dynamics of large carnivores, there are considerable attitude shifts towards these species worldwide with multiple implications. This book argues and demonstrates why human dimensions of relationships to large carnivores are crucial for their successful conservation and management. It provides an overview of theoretical and methodological perspectives, heterogeneity in stakeholder perceptions and behaviour as well as developments in decision making, stakeholder involvement, policy and governance informed by human dimensions of large carnivore conservation and management. The scope is international, with detailed examples and case studies from Europe, North and South America, Central and South Asia, as well as debates of the challenges faced by urbanization, agricultural expansion, national parks and protected areas. The main species covered include bears, wolves, lynx, and leopards. The book provides a novel perspective for advanced students, researchers and professionals in ecology and conservation, wildlife management, human-wildlife interactions, environmental education and environmental social science.

The Great Spotted Woodpecker first bred in Ireland in 2009. Since then the author has followed the daily lives of this species, a family of whom had taken up residence in a windtorn Spanish chestnut tree near his home in the depths of County Wicklow. This unique and personal account of a family of woodpeckers raising their young brings the reader deep into the world of this fascinating species: a world of hope, love, death, new life and ultimately success. It explores the richness and diversity of the natural wonders found in County Wicklow against a backdrop of a more general overview of the species in Ireland. It includes a foreword by filmmaker John Boorman, and features illustrations by Killian Mullarney and Flemming Christoffersen with stunning colour photographs by Dick Coombes. This book is to be treasured by everyone – not just ornithologists, but those with an interest in the natural world around them.

This booklet, together with the following two, -which are well under way and will succeed it at intervals of, we hope, no more than six months, sets the stage for a new editorial enterprise in the field of brain science. The accent is on the functional aspects of brains rather than on their develop ment, hence the title of the series. The central question being how neural activity is related to behavior, there will be, naturally, a wide scatter of sub jects, and Heiligenberg's monograph on electric fish may be considered typ ical of the expected standard deviation from the mean. Deviations in other directions may go as far as the sensory neuron, or brain theory, or aphasia, or farther. The next contributions planned for the series are: Precht, Neuronal Operations in the Vestibular System, and Movshon, Genes and Environment in the Development of the Visual Cortex. Our aim is to ap proach the central area by means of something like an evolving handbook of brain science. The individual monographs should describe promising and successful approaches, even in areas where the last word is far from being said. Besides originaI monographs and compounds of the author's own published papers, reviews are also we1come if they are more than the sum of the parts. The publisher promises speedy publication, and the editors will see that the manuscripts will be readable as well as interesting. Tubingen, Summer 1977 V."

From Jack London to Aldo Leopold's "fierce green fire," wolves have been a central part of the American image. Many have even suggested that our national symbol, the bald eagle, be replaced with this noble creature who, like us, raises a family and is bold and loyal in protecting the pack. Brenda Peterson blends science, history, and memoir to dramatize the epic battle to restore wolves and thus the landscape and ecology of the continent. From the vicious exterminations carried out by pioneers and settlers; to the internationally celebrated triumph of the return of wolves to Yellowstone; to backlash, politics, and near-daily news of successful reintroductions, this is perhaps the most inspiring conservation story of our time. Brenda's central characters are two famous wolves: the powerful and prolific female "067," restored to Yellowstone only to be "legally" murdered, and Journey, a near-miraculous transcontinental survivor. Along with these are the scientists, ranchers, and activists who are fighting against fear, politics, greed, and scientific ignorance to bring wild wolves home to keep our environment whole.

On the Alaska Peninsula, where exceptional landscapes are commonplace, a small river attracts attention far beyond its scale. Each year, from summer to early fall, brown bears and salmon gather at Brooks River to create one of North America's greatest wildlife spectacles. As the salmon leap from the cascade, dozens of bears are there to catch them (with as many as forty-three bears sighted in a single day), and thousands of people come to watch in person or on the National Park Service's popular Brooks Falls Bearcam. The Bears of Brooks Falls tells the story of this region and the bears that made it famous in three parts. The first forms an ecological history of the region, from its dormancy 30,000 years ago to the volcanic events that transformed it into the Valley of Ten Thousand Smokes. The central and longest section is a deep dive into the lives of the wildlife along the Brooks River, especially the bears and salmon. Readers will learn about the bears' winter hibernation, mating season, hunting rituals, migration patterns, and their relationship with Alaska's changing environment. Finally, the book explores the human impact, both positive and negative, on this special region and its wild population.

'Brilliant, Fantastic and Significant' - Dr George McGavin Ants are seemingly everywhere, and this familiarity has led to some contemptuous and less than helpful stereotypes. In this compelling insight into the natural and cultural history of ants, Richard Jones helps to unravel some of the myths and misunderstanding surrounding their remarkable behaviours. Ant aggregations in large (often mind-bogglingly huge) nests are a complex mix of genetics, chemistry, geography and higher social interaction. Their forage trails - usually to aphid colonies but occasionally into the larder - are maintained by a wondrous alchemy of molecular scents and markers. Their social colony structure confused natural philosophers of old and still taxes the modern biologist today. Beginning the book with a straightforward look at ant morphology, Jones then explores the ant species found in the British Isles and parts of nearby mainland Europe, their foraging, nesting, navigating and battle instincts, how ants interact with the landscape, their evolution, and their place in our understanding of how life on earth works. Alongside this, he explores the complex relationship between humans and ants, and how ants went from being the subject of fables and moral storytelling to become popular research tools. Drawing on up-to-date science and featuring striking colour photographs throughout, this book presents a convincing case for why ants are worth our greater recognition and respect.

An appealing book that rightfully raises the profile of the kestrel. It provides an extensive picture of this delightful falcon, including its lifestyle and the factors that affect its breeding success and survival. This is based upon almost 40 years' monitoring of the kestrel in south-west Scotland and further afield by the author and colleagues, giving a flavour of the integrated approach to monitoring and conservation. As well as the wealth of factual data, there are entertaining anecdotes and stories both from the author's experiences and from the wider media coverage of this raptor over the years. The reader is taken to exotic locations such as the Seychelles, Mauritius and the Cape Verde Islands to see the endemic island kestrels which have always held a great fascination for the author. Latest figures show an alarming decline of 36% in the kestrel population in the UK, with even more dramatic falls such as 64% in Scotland. The fieldwork techniques which play such an important role are detailed in a composite breeding season. The kestrel is not portrayed in isolation and the bird's current circumstance is tied into the bigger picture of raptor conservation and the struggle against sustained persecution. The author reflects upon the political, economic and conservation issues that have dominated this field in the past few decades and through this personal and well-informed account the reader gains access to the world of the kestrel.

It's the dream scenario for many of us after a long week: having the house completely to ourselves. No partners, no parents, no kids, no pets. But as we settle into the couch, something stirs: maybe a mouse darts out from under a cupboard, or a fly buzzes lazily past the window. We're not actually alone at all. Until quite recently, no one had taken the life that lives with us very seriously: until Rob Dunn and his team decided to take a closer look. Upon investigating the terra incognita of our homes, they discovered that there are nearly 200,000 species living in our bedrooms, kitchens, living areas, bathrooms, and basements. Some of these species can kill us. Some benefit us. And some seem simply benign. But almost all of them were completely unknown--and they've been living alongside us the whole time. In Never Home Alone, biologist Rob Dunn takes us to the edge of biology's latest frontier: our own homes. Every house is a wilderness--from the Egyptian meal moths in our cupboards, to the camel crickets living in the basement, to the antibiotic-resistant Staphylococcus waiting on the kitchen counter, thousands of species of insects, bacteria, fungi, and plants live literally under our noses. As we have become increasingly obsessed with cleaning and sterilizing our homes and separating our living spaces from nature, we have unwittingly cultivated an entirely new playground for evolution. Unfortunately, this means that we have created a range of new parasites, from antibiotic-resistant microbes to nearly impossible to kill cockroaches, to threaten ourselves with. At the same time, many of the more helpful organisms--such as microbes that can protect us from autoimmune diseases or promote healthy digestion, or the centipedes that can hunt down those pesky roaches--are caught in the crosshairs. If we're not careful, the "healthier" we try to make our homes, the more likely we'll be putting our own health at risk. A rich natural history and a thrilling scientific investigation, Rob Dunn's Never Home Alone shows us that if are to truly thrive in our homes, we must learn to welcome the unknown guests that have been there the whole time.

‘In Clive, we have an ever-fascinating guide to Britain’s heathery districts, not only marvelling at the wildlife of such wild places, but also celebrating their diverse origins, uses and cultural resonances’ - ANDREW BYFIELD Heathlands are so much more than simply purple carpets of heather. They are ancient landscapes found throughout Britain that support a complex of inter-related species and an immense diversity of habitats. They also possess a unique human history defined by the struggle between pastoralism and the competing demands of those who seek exclusive use of the land. In this latest addition to the British Wildlife Collection, Clive Chatters introduces us to Britain’s heathlands and their anatomy. He then takes the reader on a geographical heathland tour – from the maritime sub-arctic of the Shetlands to the mild wetness of the Atlantic coast – with an in memoriam nod to those heaths that have been erased from common memory and understanding. He concludes with a review of how people have perceived and used heathland wildlife over the ages, and sets out a future vision for this iconic landscape, its unique habitats and the species that live there. Most of our heaths are pale shadows of their former selves. However, Chatters argues, it is not inevitable that the catastrophic losses of the recent past are the destiny of our remaining heaths. Should we wish, their place in the countryside as an integral part of British culture can be secured.

'I found myself turning the pages with an inward leap of joy' - Isabella Tree *Shortlisted for the James Cropper Wainwright Prize for Conservation* *Shortlisted for the Richard Jefferies Award for Nature Writing* 'Exquisite' GUARDIAN It was a tragic day for the nation's wildlife when England's last and loneliest golden eagle died in an unmarked spot among the remote eastern fells of the Lake District. But the fight to restore the landscape had already begun. Lee Schofield, ecologist and site manager for RSPB Haweswater, is leading efforts to breathe life back into two hill farms and their thirty square kilometres of sprawling upland habitat. Informed by the land, its turbulent history and the people who have shaped it, Lee and his team are repairing damaged wetlands, meadows and woods. Each year, the landscape is becoming richer, wilder and better able to withstand the shocks of a changing climate. But in the contested landscape of the Lake District, change is not always welcomed, and success relies on finding a balance between rewilding and respecting cherished farming traditions. This is not only a story of an ecosystem in recovery, it is also the story of Lee's personal connection to place, and the highs and lows of working for nature amid fierce opposition.

As humans continue to encroach on wildlands, quality and quantity of wildlife habitat decreases before our eyes. A housing development here, a shopping mall there, a few more trees cut here, another road put in there, each of these diminishes available habitat. Unless the cumulative effects of multiple simultaneous development projects are recognized and incorporated at the beginning of project development, we will continue to see wildlife habitat disappear at unprecedented rates. Divided into two parts, Cumulative Effects in Wildlife Management emphasizes the importance of recognizing cumulative effects and highlights the necessity of their bearing on future policy. It begins with an outline of the differences between direct, indirect, and cumulative effects of anthropogenic impacts on wildlife habitat and addresses the similarities and differences in US and Canadian policies, legal and economic ramifications, and the confusion that stems from lack of consideration, communication, and forward planning. Section 1 also describes the current standard means of quantifying cumulative effects as proposed by the Council on Environmental Quality. Section 2 presents a series of case studies that deepen our appreciation of how anthropogenic influences interconnect and how this heightened level of understanding influences our ability to make informed decisions. Case studies include cumulative effects in the Canadian Arctic, border issues with Mexico, suburban and exurban landscapes, scenic resources, and the cumulative impacts of energy development on sage-grouse. Without a conscious knowledge of what is happening around us, we will not be able to incorporate an effective land ethic, and natural resources will be the ultimate loser. Cumulative Effects in Wildlife Management brings to light the crucial connections between human expansion and habitat destruction for those managers and practitioners charged with protecting wildlife in the face of

An Introduction to Conservation Biology is the only text designed for both aspiring conservation biologists and non-majors who are interested in this topical field, providing up-to-date perspectives on high-profile issues such as sustainable development, global warming, and strategies to save species on the verge of extinction. The book focuses successively on biological diversity and its value; threats to biological diversity; conservation at the population and species levels; protecting, managing and restoring ecosystems; and sustainable development. Each chapter is beautifully illustrated in full color with diverse examples from the current literature. Chapters begin with guiding conservation biology principles and end with study aids such as summaries, an annotated list of suggested readings, and discussion questions. Throughout, the authors maintain a focus on the active role that scientists, local people, conservation organizations, government, and the general public play in protecting biodiversity, even while providing for human needs.

Emerging infectious diseases pose an increasingly serious threat to a number of endangered or sensitive species and are increasingly recognized as one of the major factors driving species extinction. Despite the significant impact of pathogens on conservation, no single book has yet integrated the theoretical principles underlying disease transmission with the practical health considerations for helping wildlife professionals and conservation biologists to manage disease outbreaks and conserve biodiversity. This novel and accessible book starts with a foundational section focusing on the role of pathogens in natural ecosystems, the dynamics of transmission in different environments, and the factors driving wildlife disease outbreaks. It then moves on to more applied issues concerned with the acquisition of field data including sampling, experimental design and analysis, as well as diagnostic analyses in both the laboratory and field. Guidelines for effective modelling and data analysis follow, before a final section is devoted to disease prevention and control including the prevention of novel outbreaks, the use of diseases as biocontrol agents, and the associated issues of ethics, public communication, and outreach. Infectious Disease Ecology and Conservation is primarily aimed at advanced undergraduates, graduate students, and established researchers in the fields of conservation biology, disease ecology, population ecology, and veterinary science. It will also be a valuable reference for conservation practitioners, land managers, and wildlife professionals who are required to deal with disease outbreak problems.

Life histories can be defined as the means by which individuals (or more precisely genotypes) vary their age- or stage-specific expenditures of reproductive effort in response to genetic, phenotypic, and environmental correlates of survival and fecundity. Life histories reflect the expression of traits most closely related to individual fitness, such as age and size at maturity, number and size of offspring, and the timing of the expression of those traits throughout an individual's life. In addition to addressing questions of fundamental importance to ecology and evolution, life-history research plays an integral role in species conservation and management. This accessible primer encompasses the basic concepts, theories, and applied elements of life history evolution, including patterns of trait variability, underlying mechanisms of plastic/evolutionary change, and the practical utility of life-history traits as metrics of species/population recovery, sustainable exploitation, and risk of extinction. Empirical examples are drawn from the entire spectrum of life. A Primer of Life Histories is designed for readers from a broad range of academic backgrounds and experience including graduate students and researchers of ecology and evolutionary biology. It will also be useful to a more applied audience of academic/government researchers in fields such as wildlife biology, conservation biology, fisheries science, and the environmental sciences.

Do you think identifying bats in Europe or in North America is difficult? Well, try it in the Amazon. The planet's green lung is home to the most diverse bat communities on the planet with more than 160 species currently described. Local species richness often surpasses 100 and for many, their identification in the field is, to say the least, challenging. This task will now become easier with the publication of the Field Guide to the Bats of the Amazon: a landmark handbook aimed at facilitating species identification in the field. The book, written and designed by an international bat research team mainly based in the University of Lisbon in collaboration with the National Institute of Amazonian Research (INPA), is a guide for anyone conducting field work on bats in the Amazon or interested in bat biodiversity. It is largely based on previous published keys with modifications derived from both personal observations and years of field experience in the Brazilian Amazon at the Biological Dynamics of Forest Fragments Project (BDFFP), as well as a thorough revision of available bat keys and species descriptions. The field guide also features the first acoustic key for Amazonian bats, illustrated with the echolocation spectrogram of most species. This represents a major step towards alleviating the daunting task of identifying the numerous species of aerial insectivorous bats that occur in the Amazon based on their echolocation calls. It further constitutes an important tool to improving the knowledge and optimizing surveys of aerial insectivorous Neotropical bats, a group which remains largely understudied. The field guide provides an essential tool, not only for researchers, but also for bat conservationists, consultancies and anyone interested in Neotropical bats in general, and Amazonian bats in particular.

A lavish and definitive view of the oceanic world - accompanying the landmark 7-part BBC series narrated by Sir David Attenborough. With over 200 breath-taking photographs and stills from the BBC Natural History Unit's spectacular footage, this awe-inspiring study of life below the surface will amaze and enthral. 'Jaw-dropping' - Variety 'Substantial and awe-inspiring' - Publishers Weekly 'Breath-taking' -- ***** Reader review 'An incredible book and a must buy' -- ***** Reader review 'Outstanding' -- ***** Reader review ************************************************************************* Take a deep breath and dive into the mysteries of the ocean... Our understanding of ocean life has changed dramatically in the last decade, with new species, new behaviours, and new habitats being discovered at a rapid rate. Blue Planet II, which accompanies the epic BBC 7-part series, is a ground-breaking new look at the richness and variety of underwater life across our planet. From ambush hunters such as the carnivorous bobbit worm to cuttlefish mesmerising their prey with a pulsating light display, Blue Planet II reveals the never-before-seen secrets of the ocean. With over 200 breath-taking photographs and stills from the BBC Natural History Unit's spectacular footage, each chapter of Blue Planet II brings to life a different habitat of the oceanic world. As well as shining a light on ocean life, coral reef and arctic ice communities and shoreline existence, Blue Planet II examines unflinchingly what the future holds for our ocean dwellers. It's a book that will amaze, educate, captivate and astound.

These charismatic mammals, which include dogs, cats, hyenas, weasels, mongooses, seals, sea lions and bears, have always held special importance to humans throughout history and continue to do so today. In recent decades, the emergence of new technologies has completely transformed our knowledge of how carnivorans interact with their environments and consequently reshaped our view of carnivoran ecology. This unique synthesis uses examples from a diverse and expanding carnivoran literature, drawing from all carnivoran families and spanning the world's oceans and continents, to produce a clearly written and richly illustrated book that reviews our current state of knowledge of carnivoran ecology. It addresses all levels of biological organization and function, from genes to enzymes, organisms, populations, and ecosystems. Special attention is given to how carnivoran species interact with their prey, each other, and humans. There is an emphasis on community interactions and their importance in carnivoran evolution, showing how evolutionary constraints (morphological, physiological, and behavioral) structure communities today. The book's approach is strongly comparative, contrasting herbivores with carnivores, predators with scavengers, and cats with dogs. Carnivorans play important roles in many high-profile conservation cases, either as species of concern or agents of endangerment, and their importance is demonstrated in both contexts. Carnivoran Ecology is an accessible advanced textbook aimed principally at senior undergraduate and graduate students taking courses in carnivore ecology, as well as a broad audience of professional academics (especially carnivore and mammalian biologists), researchers, and practitioners working in both governmental and non-governmental organizations. A significant secondary market will exist amongst the large amateur naturalist community including those wishing to explore the ecological and evolutionary links between domestic carnivorans (dogs, cats, ferrets etc.) and their wild counterparts.