Author: Publisher:
ISBN:
Category : Public health
Languages : en
Pages : 774
Book Description
Public Health Service Publication
Author: Research Grants Index
Author: National Institutes of Health (U.S.). Division of Research GrantsPublisher:
ISBN:
Category : Medicine
Languages : en
Pages : 1238
Book Description
Public Health Service Grants and Awards by the National Institutes of Health
Author: The Migration Ecology of Birds
Author: Ian NewtonPublisher: Elsevier
ISBN: 012823752X
Category : Science
Languages : en
Pages : 725
Book Description
The Migration Ecology of Birds, Second Edition covers all aspects of this absorbing subject, including migratory processes, problems of navigation and vagrancy, timing and physiological control of migration, large-scale movement patterns, the effects of recent climate change, the problems that migrants face, and the factors that limit their populations. This book provides a thorough and in-depth review of the state of the science, with the text supplemented by abundant tables, maps and diagrams. Written by a world-renowned avian ecology and migration researcher, this book reveals the extraordinary adaptability of birds to the variable and changing conditions across the globe. This book represents the most updated and detailed review of bird migration, its evolution, ecology and bird physiology. Written in a clear and readable style, it will appeal not only to migration researchers in the field and ornithologists, but to anyone with an interest in this fascinating subject. - Features updated and trending ecological aspects, including various types of bird movements, dispersal and nomadism, and how they relate to food supplies and other external conditions - Contains numerous tables, maps, diagrams, a glossary, and a bibliography of more than 3,000 up-to-date references - Written by an active researcher with a distinguished career in avian ecology, including migration research
Sources, Sinks and Sustainability
Author: Jianguo LiuPublisher: Cambridge University Press
ISBN: 1139496247
Category : Nature
Languages : en
Pages : 545
Book Description
Source-sink theories provide a simple yet powerful framework for understanding how the patterns, processes and dynamics of ecological systems vary and interact over space and time. Integrating multiple research fields, including population biology and landscape ecology, this book presents the latest advances in source-sink theories, methods and applications in the conservation and management of natural resources and biodiversity. The interdisciplinary team of authors uses detailed case studies, innovative field experiments and modeling, and comprehensive syntheses to incorporate source-sink ideas into research and management, and explores how sustainability can be achieved in today's increasingly fragile human-dominated ecosystems. Providing a comprehensive picture of source-sink research as well as tangible applications to real world conservation issues, this book is ideal for graduate students, researchers, natural-resource managers and policy makers.
Frugivory and seed dispersal: ecological and evolutionary aspects
Author: T.H. FlemingPublisher: Springer Science & Business Media
ISBN: 9401117497
Category : Science
Languages : en
Pages : 392
Book Description
Any scientific discipline needs a theoretical framework to guide its development and to sharpen the questions its researchers pursue. In biology, evolution is the grand theoretical framework, and an his torical perspective is necessary to understand present-day biological conditions. In its formative years, the modern study of the fruit-frugivore mutualism was guided by the 'specialist-generalist' paradigm developed by D. Snow, D. McKey, and H. Howe. Howe reviews the current status of this evolution ary paradigm and points out that it has been dismissed by many workers before being adequately tested. This is because ecologists working with the tropical plants and frugivorous birds for which the paradigm was originally developed rarely measure the seed dispersal effectiveness of different disperser species. He indicates that this paradigm still has heuristic value and suggests that several additional ecological paradigms, including the concept ofkeystone species ofplants and frugivores and the role that frugivores play in density-dependent mortality in tropical trees, are worth studying. The concept of seed dispersal quality has been central to discussions of fruit-frugivore coevolution. Schupp thoroughly reviews data bearing on this concept, constructs a hierarchical framework for viewing disperser effectiveness, and points out that disperser effectiveness depends on both the quantity and quality of seed dispersal. Effectiveness, in turn, affects both evolutionary and ecological relationships between dispersers and their food plants.
Avian Biology
Author: Donald S. FarnerPublisher: Elsevier
ISBN: 1483269450
Category : Nature
Languages : en
Pages : 515
Book Description
Avian Biology, Volume VI is a compendium of papers that deals with selected aspects of avian biology. One paper discusses the avian mating behavior and covers topics such as monogamy, polygyny, male incubation, and female emancipation; these papers also list a table of the species of birds in which polyandry has been observed. Another paper examines bird migration in relation to the mechanism and development of migration with emphasis on the evolution and function (ultimate causation) of migration. Another paper discusses the advantages of one form of social organization of birds during the non-reproductive season over another form. This paper reasons the possibility of the existence of a cost-benefit social behavior. Other papers discuss some physical features found in birds such as stomach oils and glycogen-filled cells. Another paper deals with the respiratory physiology of birds as new research data have been made available in this area. This book can prove useful for investigators in avian biology, zoologists, and readers who have a general interest in birds.
Shorebird Ecology, Conservation, and Management
Author: Dr. Mark A. ColwellPublisher: Univ of California Press
ISBN: 0520947967
Category : Science
Languages : en
Pages : 345
Book Description
Shorebirds are model organisms for illustrating the principles of ecology and excellent subjects for research. Their mating systems are as diverse as any avian group, their migrations push the limits of endurance, and their foraging is easily studied in the open habitats of estuaries and freshwater wetlands. This comprehensive text explores the ecology, conservation, and management of these fascinating birds. Beginning chapters examine phylogenetic relationships between shorebirds and other birds, and cover shorebird morphology, anatomy, and physiology. A section on breeding biology looks in detail at their reproductive biology. Because shorebirds spend much of their time away from breeding areas, a substantial section on non-breeding biology covers migration, foraging ecology, and social behavior. The text also covers shorebird demography, population size, and management issues related to habitat, predators, and human disturbances. Throughout, it emphasizes applying scientific knowledge to the conservation of shorebird populations, many of which are unfortunately in decline.
Bird Migration
Author: John H. RappolePublisher: JHU Press
ISBN: 1421442396
Category : Science
Languages : en
Pages : 345
Book Description
A fascinating and nuanced exploration of why, how, and which birds migrate. Bird migration captivates the human imagination, yet for most of us, key aspects of the phenomenon remain a mystery. How do birds sense the ideal moment to take wing, and once the epic journey has begun, how do they find their distant destinations? Fresh insights about avian movements are still constantly emerging, powered by new tools like molecular genetics and transmitter miniaturization. In this book, renowned ornithologist and author John H. Rappole reveals intriguing results of recent scientific studies on migration, explaining their importance for birders, nature lovers, and researchers alike. Debunking misconceptions about the lives of birds that have persisted for thousands of years, Rappole explores unexpected causes and previously misunderstood aspects of the annual migration cycle. From the role of migrating birds in zoonotic disease transmission to climate change's impact on migration patterns, Rappole tackles crucial questions and ensures that readers come away with a new understanding of why and how birds migrate.
The Monkey's Voyage
Author: Alan de QueirozPublisher: Basic Books
ISBN: 0465069762
Category : Science
Languages : en
Pages : 370
Book Description
Throughout the world, closely related species are found on landmasses separated by wide stretches of ocean. What explains these far-flung distributions? Why are such species found where they are across the Earth? Since the discovery of plate tectonics, scientists have conjectured that plants and animals were scattered over the globe by riding pieces of ancient supercontinents as they broke up. In the past decade, however, that theory has foundered, as the genomic revolution has made reams of new data available. And the data has revealed an extraordinary, stranger-than-fiction story that has sparked a scientific upheaval. In The Monkey's Voyage, biologist Alan de Queiroz describes the radical new view of how fragmented distributions came into being: frogs and mammals rode on rafts and icebergs, tiny spiders drifted on storm winds, and plant seeds were carried in the plumage of sea-going birds to create the map of life we see today. In other words, these organisms were not simply constrained by continental fate; they were the makers of their own geographic destiny. And as de Queiroz shows, the effects of oceanic dispersal have been crucial in generating the diversity of life on Earth, from monkeys and guinea pigs in South America to beech trees and kiwi birds in New Zealand. By toppling the idea that the slow process of continental drift is the main force behind the odd distributions of organisms, this theory highlights the dynamic and unpredictable nature of the history of life. In the tradition of John McPhee's Basin and Range, The Monkey's Voyage is a beautifully told narrative that strikingly reveals the importance of contingency in history and the nature of scientific discovery.