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Author: Nancy Wilmsen Thornhill
Publisher: University of Chicago Press
ISBN: 0226798550
Category : Science
Languages : en
Pages : 583
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Book Description
Inbreeding, the mating of close kin, and outbreeding, the mating of distant relatives or unrelated organisms, have long been important subjects to evolutionary biologists. Inbreeding reduces genetic diversity in a population, increasing the likelihood that genetic defects will become widespread and deprive a population of the diversity it may need to cope with its environment. Most plants and animals have evolved behavioral and morphological mechanisms to avoid inbreeding. However, today many endangered species exist only in small, very isolated populations where inbreeding is unavoidable, so it has become a concern for conservationists. In this volume, twenty-six experts in evolution, behavior, and genetics examine the causes and consequences of inbreeding. The authors ask whether inbreeding is as problematic as biologists have thought, under what ecological conditions inbreeding occurs, and whether organisms that inbreed have mechanisms to dampen the anticipated problems of reduced genetic variation. The studies, including theoretical and empirical work on wild and captive populations, demonstrate that many plants and animals inbreed to a greater extent than biologists have thought, with variable effects on individual fitness. Graduate students and researchers in evolutionary biology, animal behavior, ecology, and conservation biology will welcome this wide-ranging collection.
Author: Nancy Wilmsen Thornhill
Publisher: University of Chicago Press
ISBN: 0226798550
Category : Science
Languages : en
Pages : 583
Get Book Here
Book Description
Inbreeding, the mating of close kin, and outbreeding, the mating of distant relatives or unrelated organisms, have long been important subjects to evolutionary biologists. Inbreeding reduces genetic diversity in a population, increasing the likelihood that genetic defects will become widespread and deprive a population of the diversity it may need to cope with its environment. Most plants and animals have evolved behavioral and morphological mechanisms to avoid inbreeding. However, today many endangered species exist only in small, very isolated populations where inbreeding is unavoidable, so it has become a concern for conservationists. In this volume, twenty-six experts in evolution, behavior, and genetics examine the causes and consequences of inbreeding. The authors ask whether inbreeding is as problematic as biologists have thought, under what ecological conditions inbreeding occurs, and whether organisms that inbreed have mechanisms to dampen the anticipated problems of reduced genetic variation. The studies, including theoretical and empirical work on wild and captive populations, demonstrate that many plants and animals inbreed to a greater extent than biologists have thought, with variable effects on individual fitness. Graduate students and researchers in evolutionary biology, animal behavior, ecology, and conservation biology will welcome this wide-ranging collection.
Author: Raj S. Bhopal
Publisher: Oxford University Press
ISBN: 0198739680
Category : Medical
Languages : en
Pages : 481
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Book Description
First edition published in 2002. Second edition published in 2008.
Author: Pablo Garcia Borboroglu
Publisher: University of Washington Press
ISBN: 0295999063
Category : Science
Languages : en
Pages : 337
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Book Description
Penguins, among the most delightful creatures in the world, are also among the most vulnerable. The fragile status of most penguin populations today mirrors the troubled condition of the southern oceans, as well as larger marine conservation problems: climate change, pollution, and fisheries mismanagement. This timely book presents the most current knowledge on each of the eighteen penguin species-from the majestic emperor penguins of the Antarctic to the tiny blue penguins of New Zealand and Australia, from the northern rockhopper penguins of the South Atlantic and Indian Oceans to the Galapagos penguins of the equator-written by the leading experts in the field. Included for each species: o Life history o Distribution, population sizes and trends o International Union for the Conservation of Nature (IUCN) status o Threats to survival o Legal protection The book also provides information on current conservation efforts, outlines the most important actions to be taken to increase each population's resilience, and recommends further research needed to protect penguins and the living creatures that share their environment. Beautifully illustrated with full-color photographs of each species in their natural habitat and detailed charts and graphs, Penguins will be an invaluable tool for researchers, conservation groups, and policy makers. It will also enchant anyone interested in the lives or the plight of these fascinating animals. Watch the trailer: http://www.youtube.com/watch?v=0s0BbIU6cqE&feature=plcp
Author: Paul Morland
Publisher: PublicAffairs
ISBN: 1541788389
Category : Social Science
Languages : en
Pages : 360
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Book Description
A dazzling new history of the irrepressible demographic changes and mass migrations that have made and unmade nations, continents, and empires The rise and fall of the British Empire; the emergence of America as a superpower; the ebb and flow of global challenges from Nazi Germany, Imperial Japan, and Soviet Russia. These are the headlines of history, but they cannot be properly grasped without understanding the role that population has played. The Human Tide shows how periods of rapid population transition -- a phenomenon that first emerged in the British Isles but gradually spread across the globe--shaped the course of world history. Demography -- the study of population -- is the key to unlocking an understanding of the world we live in and how we got here. Demographic changes explain why the Arab Spring came and went, how China rose so meteorically, and why Britain voted for Brexit and America for Donald Trump. Sweeping from Europe to the Americas, China, East Asia, the Middle East, and North Africa, The Human Tide is a panoramic view of the sheer power of numbers.
Author: Paul R. Ehrlich
Publisher:
ISBN: 9781568495873
Category : Social Science
Languages : en
Pages : 0
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Book Description
Author: Laurie Ann Mazur
Publisher: Island Press
ISBN: 1610911415
Category : Health & Fitness
Languages : en
Pages : 433
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Book Description
With contributions by leading demographers, environmentalists, and reproductive health advocates, A Pivotal Moment offers a new perspective on the complex connection between population dynamics and environmental quality. It presents the latest research on the relationship between population growth and climate change, ecosystem health, and other environmental issues. It surveys the new demographic landscape—in which population growth rates have fallen, but human numbers continue to increase. It looks back at the lessons of the last half century while looking forward to population policies that are sustainable and just. A Pivotal Moment embraces the concept of “population justice,” which holds that inequality is a root cause of both rapid population growth and environmental degradation. By addressing inequality—both gender and economic—we can reduce growth rates and build a sustainable future.
Author: Nicolas Bacaër
Publisher: Springer Science & Business Media
ISBN: 0857291157
Category : Mathematics
Languages : en
Pages : 160
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Book Description
As Eugene Wigner stressed, mathematics has proven unreasonably effective in the physical sciences and their technological applications. The role of mathematics in the biological, medical and social sciences has been much more modest but has recently grown thanks to the simulation capacity offered by modern computers. This book traces the history of population dynamics---a theoretical subject closely connected to genetics, ecology, epidemiology and demography---where mathematics has brought significant insights. It presents an overview of the genesis of several important themes: exponential growth, from Euler and Malthus to the Chinese one-child policy; the development of stochastic models, from Mendel's laws and the question of extinction of family names to percolation theory for the spread of epidemics, and chaotic populations, where determinism and randomness intertwine. The reader of this book will see, from a different perspective, the problems that scientists face when governments ask for reliable predictions to help control epidemics (AIDS, SARS, swine flu), manage renewable resources (fishing quotas, spread of genetically modified organisms) or anticipate demographic evolutions such as aging.
Author: Matthew Connelly
Publisher: Harvard University Press
ISBN: 067426276X
Category : History
Languages : en
Pages : 538
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Book Description
Fatal Misconception is the disturbing story of our quest to remake humanity by policing national borders and breeding better people. As the population of the world doubled once, and then again, well-meaning people concluded that only population control could preserve the “quality of life.” This movement eventually spanned the globe and carried out a series of astonishing experiments, from banning Asian immigration to paying poor people to be sterilized. Supported by affluent countries, foundations, and non-governmental organizations, the population control movement experimented with ways to limit population growth. But it had to contend with the Catholic Church’s ban on contraception and nationalist leaders who warned of “race suicide.” The ensuing struggle caused untold suffering for those caught in the middle—particularly women and children. It culminated in the horrors of sterilization camps in India and the one-child policy in China. Matthew Connelly offers the first global history of a movement that changed how people regard their children and ultimately the face of humankind. It was the most ambitious social engineering project of the twentieth century, one that continues to alarm the global community. Though promoted as a way to lift people out of poverty—perhaps even to save the earth—family planning became a means to plan other people‘s families. With its transnational scope and exhaustive research into such archives as Planned Parenthood and the newly opened Vatican Secret Archives, Connelly’s withering critique uncovers the cost inflicted by a humanitarian movement gone terribly awry and urges renewed commitment to the reproductive rights of all people.
Author: Institute of Medicine
Publisher: National Academies Press
ISBN: 0309133181
Category : Medical
Languages : en
Pages : 536
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Book Description
The anthrax incidents following the 9/11 terrorist attacks put the spotlight on the nation's public health agencies, placing it under an unprecedented scrutiny that added new dimensions to the complex issues considered in this report. The Future of the Public's Health in the 21st Century reaffirms the vision of Healthy People 2010, and outlines a systems approach to assuring the nation's health in practice, research, and policy. This approach focuses on joining the unique resources and perspectives of diverse sectors and entities and challenges these groups to work in a concerted, strategic way to promote and protect the public's health. Focusing on diverse partnerships as the framework for public health, the book discusses: The need for a shift from an individual to a population-based approach in practice, research, policy, and community engagement. The status of the governmental public health infrastructure and what needs to be improved, including its interface with the health care delivery system. The roles nongovernment actors, such as academia, business, local communities and the media can play in creating a healthy nation. Providing an accessible analysis, this book will be important to public health policy-makers and practitioners, business and community leaders, health advocates, educators and journalists.
Author: Rory Putman
Publisher: Cornell University Press
ISBN: 9780801422836
Category : Nature
Languages : en
Pages : 228
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Book Description
This book reviews current knowledge of the biology and natural history of the world's 40 species of deer.
