The Keys are designed for easy visual comparison of details which look alike, narrowing the identification of a tree to one of a small group -- the family or genus.Then, in the Master Pages, the species of the tree is determined, with similar details placed together to highlight differences within the family group, thus eliminating all other possibilities. The details of the Oak trees on this plate are an example of the system.All of the more than 1500 photographs were made specifically for use in this book and were taken either in the field or of carefully collected specimens. Where possible, details such as leaves, fruit, etc., appear in actual size, or in the same scale.

    Fully grown they can measure 10 feet and weigh close to 2,000 pounds, but at birth they are just 20 ounces. Creatures that may wander thousands of miles over the course of a year, they begin life in a snowdrift.Human encounters with these legendary beasts are cause for both excitement and apprehension. Tales throughout history describe the ferocity of polar bear attacks on humans; but human hunting of polar bears has exacted a far larger toll, obliging Arctic nations to try to protect their region’s iconic species before it’s too late.Now, however, another threat to the polar bears’ survival has emerged, one that is steadily removing sea ice and the life it supports. Without this habitat, polar bears cannot exist. The Great White Bear celebrates the story of this unique species. Through a blend of history, both natural and human, through myth and reality and observations both personal and scientific, Kieran Mulvaney masterfully provides a context for readers to consider the polar bear, its history, its life, and its uncertain fate.

    Fathoms: The World in the Whale blends natural history, philosophy, and science to explore: How do whales experience ecological change? Will our connection to these storied animals be transformed by technology? What can observing whales teach us about the complexity, splendour, and fragility of life? In Fathoms, we learn about whales so rare they have never been named, whale songs that sweep across hemispheres in annual waves of popularity, and whales that have modified the chemical composition of our planet’s atmosphere. We travel to Japan to board the ships that hunt whales and delve into the deepest seas to discover the plastic pollution now pervading the whale’s undersea environment. In the spirit of Rachel Carson and Rebecca Solnit, Giggs gives us a vivid exploration of the natural world even as she addresses what it means to write about nature at a time of environmental crisis.

    Our species emerged out of the depths of time into a world already populated by these great carnivores. Before we mastered iron and later developed firearms, we had few defences against bears--only watchful caution and elaborate ceremonies and sacrifices to ward off fear.Where human populations grow, bears have traditionally dwindled or disappeared. But when we return to the wild, to places where bears still survive, all our primeval fears awaken again. The risk of an automobile accident on the way to bear country far outstrips the risk of a close-range encounter with a bear, but it's the bear that worries us as we hurtle down the pavement at a hundred kilometres an hour.In this timely and sensitive book, Kevin Van Tighem calls on decades of experience, knowledge and understanding in order to enlighten readers about our relationship with and attitude toward bears. Along the way we are confronted with the realities confronting these great animals as a result of our ever-expanding human population and their ever-shrinking natural habitat. Through historical research, field observation, practical advice, personal anecdotes and an array of stunning photos, Van Tighem has written a comprehensive book that is meant to demystify bears in order to promote a deeper understanding of these powerful yet vulnerable creatures.

    . . No scientist had seen a Blakiston’s fish owl so far south in a hundred years . . . When he was just a fledgling birdwatcher, Jonathan C. Slaght had a chance encounter with one of the most mysterious birds on Earth. Bigger than any owl he knew, it looked like a small bear with decorative feathers. He snapped a quick photo and shared it with experts. Soon he was on a five-year journey, searching for this enormous, enigmatic creature in the lush, remote forests of eastern Russia. That first sighting set his calling as a scientist.Despite a wingspan of six feet and a height of over two feet, the Blakiston’s fish owl is highly elusive. They are easiest to find in winter, when their tracks mark the snowy banks of the rivers where they feed. They are also endangered. And so, as Slaght and his devoted team set out to locate the owls, they aim to craft a conservation plan that helps ensure the species’ survival. This quest sends them on all-night monitoring missions in freezing tents, mad dashes across thawing rivers, and free-climbs up rotting trees to check nests for precious eggs. They use cutting-edge tracking technology and improvise ingenious traps. And all along, they must keep watch against a run-in with a bear or an Amur tiger. At the heart of Slaght’s story are the fish owls themselves: cunning hunters, devoted parents, singers of eerie duets, and survivors in a harsh and shrinking habitat.Through this rare glimpse into the everyday life of a field scientist and conservationist, Owls of the Eastern Ice testifies to the determination and creativity essential to scientific advancement and serves as a powerful reminder of the beauty, strength, and vulnerability of the natural world.

    Pepperberg and Alex, an African Grey parrot who proved scientists and accepted wisdom wrong by demonstrating an astonishing ability to communicate and understand complex ideas. The story is much more than of an incredible scientific breakthrough. It s a poignant love story and an affectionate remembrance of Pepperberg s irascible, unforgettable, and always surprising best friend.

    Accompanying every species entry is a distribution map and illustrations showing the species in all the major plumages (male, female, immature, in flight, at rest, feeding: whatever is important).In addition, each group of birds includes an introduction which covers the major problems involved in identifying or observing them: how to organise a sea watching trip, how to separate birds of prey in flight, which duck hybrids can be confused with which main species. These and many other common birdwatching questions are answered.The combination of definitive text, up-to-date distribution maps and superb illustrations, all in a single volume, makes this book the ultimate field guide, essential on every bookshelf and birdwatching trip.

    Naturalists Kenn Kaufman and Eric R. Eaton use a broad ecological approach rather than overly technical terms, making the book accessible and easy to use. Their lively and engaging text emphasizes the insects that are most likely to draw attention and also includes helpful details on a wide array of lesser-known but recognizable groups. The guide is lavishly illustrated, with more than 2,350 digitally enhanced photographs representing every major group of insects found in North America north of Mexico.

    This perfect guide for both seasoned and novice seaglunkers reveals how to locate the best beaches and predict optimum conditions; understand coastal access laws; determine the personal and professional value of sea glass; and identify the source of individual fragments.

    It features a durable vinyl biding, color plates visually arranged by shape and color, and thumb-tab silhouettes for quick and easy identification of butterflies in the field. The species account for each butterfly provides measurements, descriptions of each stage of the life cycle, and information on coloring or distinguishing markings, flight period, habitat, and range.

    Visiting it almost daily for one year to trace nature’s path through the seasons, he brings the forest and its inhabitants to vivid life.Each of this book’s short chapters begins with a simple observation: a salamander scuttling across the leaf litter; the first blossom of spring wildflowers. From these, Haskell spins a brilliant web of biology and ecology, explaining the science that binds together the tiniest microbes and the largest mammals and describing the ecosystems that have cycled for thousands—sometimes millions—of years. Each visit to the forest presents a nature story in miniature as Haskell elegantly teases out the intricate relationships that order the creatures and plants that call it home.Written with remarkable grace and empathy, The Forest Unseen is a grand tour of nature in all its profundity. Haskell is a perfect guide into the world that exists beneath our feet and beyond our backyards.

    In luminous, razor-sharp prose, Nordhaus explores the vital role that honeybees play in American agribusiness, the maintenance of our food chain, and the very future of the nation. With an intimate focus and incisive reporting, in a book perfect for fans of Eric Schlosser’s Fast Food Nation, Michael Pollan’s The Botany of Desire,and John McPhee’s Oranges, Nordhaus’s stunning exposé illuminates one the most critical issues facing the world today,offering insight, information, and, ultimately, hope.

    More than 300 color photos illustrate the plants, their flowers, leaves, and fruits. The descriptive text includes information on where the plants are found as well as their known medicinal uses. An index to medical topics is helpful for quickly locating information on specific ailments from asthma and headaches to colds and stomach aches. Symbols next to plant descriptions provide quick visual caution for plants that are poisonous or cause allergic reactions. Organized by plant color for fast identification, this guide is a tool for understanding the traditional medicinal uses of the plants around us.

    Join him as he travels across five continents for an up-close view of the astonishing variety and fascinating behavior of rainforest plants and trees, reptiles, birds, amphibians, insects, and mammals.

    It is the most comprehensive one-volume guide to the Neotropics available today. Widely praised in its first edition, it remains a book of unparalleled value to tourists, students, and scientists alike. This second edition has been substantially revised and expanded to incorporate the abundance of new scientific information that has been produced since it was first published in 1989. Major additions have been made to every chapter, and new chapters have been added on Neotropical ecosystems, human ecology, and the effects of deforestation. Biodiversity and its preservation are discussed throughout the book, and Neotropical evolution is described in detail. This new edition offers all new drawings and photographs, many of them in color. As enthusiastic readers of the first edition will attest, this is a charming book. Wearing his learning lightly and writing with ease and humor, John Kricher presents the complexities of tropical ecology as accessible and nonintimidating. Kricher is so thoroughly knowledgeable and the book is so complete in its coverage that general readers and ecotourists will not need any other book to help them identify and understand the plants and animals, from birds to bugs, that they will encounter in their travels to the New World tropics. At the same time, it will fascinate armchair travelers and students who may get no closer to the Neotropics than this engagingly written book.