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Ever since the acorn woodpecker was observed and described by Spanish explorers, its behavior--particularly the unique habit of caching acorns in specialized storage trees or granaries--has impressed observers. Acorn woodpeckers are also one of the few temperate zone species in which young are reared communally in family groups. This demographic study investigates the complexities of acorn storage and group living in acorn woodpeckers at Hastings Reservation in central coastal California. It is one of the most thorough studies of any avian social system to date.
A decade ago, Tim Gallagher was one of the rediscoverers of the legendary ivory-billed woodpecker, which most scientists believed had been extinct for more than half a century—now Gallagher once again hits the trail, journeying deep into Mexico’s savagely beautiful Sierra Madre Occidental, home to rich wildlife, as well as to Mexican drug cartels, in a perilous quest to locate the most elusive bird in the world—the imperial woodpecker. The imperial woodpecker’s trumpetlike calls and distinctive hammering on massive pines once echoed through the high forests. Two feet tall, with deep black plumage, a brilliant snow-white shield on its back, and a crimson crest, the imperial woodpecker had largely disappeared fifty years ago, though reports persist of the bird still flying through remote mountain stands. In an attempt to find and protect the imperial woodpecker in its last habitat, Gallagher is guided by a map of sightings of this natural treasure of the Sierra Madre, bestowed on him by a friend on his deathbed. Charged with continuing the quest of a line of distinguished naturalists, including the great Aldo Leopold, Gallagher treks through this mysterious, historically untamed and untamable territory. Here, where an ancient petroglyph of the imperial can still be found, Geronimo led Apaches in their last stand, William Randolph Hearst held a storied million-acre ranch, and Pancho Villa once roamed, today ruthless drug lords terrorize residents and steal and strip the land. Gallagher’s passionate quest takes a harrowing turn as he encounters armed drug traffickers, burning houses, and fleeing villagers. His mission becomes a life-and-death drama that will keep armchair adventurers enthralled as he chases truth in the most dangerous of habitats.
Terminology, conceptual overview, biogeography, modeling.
In its first English-language edition, this book introduces the many-faceted interactions of animal populations with their habitats. From soil fauna, ants and termites to small and large herbivores, burrowing mammals and birds, the author presents a comprehensive analysis of animals and ecosystems that is as broad and varied as all nature. Chapter 2 addresses the functional role of animals in landscape ecosystems, emphasizing fluxes of energy and matter within and between ecosystems, and the effects of animals on qualitative and structural habitat change. Discussion includes chapters on the role of animal population density and the impacts of native herbivores on vegetation and habitats from the tropics to the polar regions. Cyclic mass outbreaks of species such as the larch bud moth in Switzerland, the mountain pine beetle and the African red-billed weaver bird are described and analyzed. Other chapters discuss Zoochory – the dispersal of seeds by ants, mammals and birds – and the influence of burrowing animals on soil development and geomorphology. Consideration extends to the impact of feral domestic animals. Chapter 5 focuses on problems resulting from introduction of alien animals and from re-introduction of animal species to their original habitats, discusses the effects on ecosystems of burrowing, digging and trampling by animals. The author also addresses keystone species such as kangaroo rats, termites and beavers. Chapter 6 addresses the role of animals in landscape management and nature conservation, with chapters on the impact of newcomer species such as animals introduced into Australia, New Zealand and Europe, and the consequences of reintroduction of species to original habitat. It also discusses the carrying capacity of natural habit, public attitudes toward conversation and more. The final section ponders the effects of climate on interactions between animals and their habitats.
This book is dedicated to global perspectives on sustainable forest management. It focuses on a need to move away from purely protective management of forests to innovative approaches for multiple use and management of forest resources. The book is divided into two sections; the first section, with thirteen chapters deals with the forest management aspects while the second section, with five chapters is dedicated to forest utilization. This book will fill the existing gaps in the knowledge about emerging perspectives on sustainable forest management. It will be an interesting and helpful resource to managers, specialists and students in the field of forestry and natural resources management.
With more than 5,000 works cited, Handbook of Avian Hybrids of the World is the greatest compendium of information ever published on hybridization in birds. Worldwide in scope, it provides information on all reported avian crosses, not only those occurring in captivity, but also in a natural setting (approximately 4,000 crosses are covered). This book is a basic reference, intended both for the serious birder and the professional biologist. McCarthy's work fills a need for reference material that takes into account the last half century of data. It will be of interest to workers in a wide variety of fields, ranging from animal behavior to genetics, ecology, zoology, and systematics. In fact, it will make fascinating reading for anyone interested in birds and the natural world.