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Throughout the twentieth century, biologists investigated the mechanisms that stabilize biological populations, populations which--if unchecked by such agencies as competition and predation--should grow geometrically. How is order in nature maintained in the face of the seemingly disorderly struggle for existence? In this book, Laurence Mueller and Amitabh Joshi examine current theories of population stability and show how recent laboratory research on model populations--particularly blowflies, Tribolium, and Drosophila--contributes to our understanding of population dynamics and the evolution of stability. The authors review the general theory of population stability and critically analyze ...
Does Aging Stop? shatters the conventional beliefs on which aging research has been based for the last fifty years.
The Long Life invites the reader to range widely from the writings of Plato through to recent philosophical work by Derek Parfit, Bernard Williams, and others, and from Shakespeare's King Lear through works by Thomas Mann, Balzac, Dickens, Beckett, Stevie Smith, Philip Larkin, to more recent writing by Saul Bellow, Philip Roth, and J. M. Coetzee. Helen Small argues that if we want to understand old age, we have to think more fundamentally about what it means to be a person, to have a life, to have (or lead) a good life, to be part of a just society. What did Plato mean when he suggested that old age was the best place from which to practice philosophy - or Thomas Mann when he defined old age...
An ecosystem's complexity develops from the vast numbers of species interacting in ecological communities. The nature of these interactions, in turn, depends on environmental context. How do these components together influence an ecosystem's behavior as a whole? Can ecologists resolve an ecosystem's complexity in order to predict its response to disturbances? Resolving Ecosystem Complexity develops a framework for anticipating the ways environmental context determines the functioning of ecosystems. Oswald Schmitz addresses the critical questions of contemporary ecology: How should an ecosystem be conceptualized to blend its biotic and biophysical components? How should evolutionary ecologica...
It has been said that new discoveries and developments in the human, social, and natural sciences hang “in the air” (Bowler, 1983; 2008) prior to their consummation. While neo-Darwinist biology has been powerfully served by its mechanistic metaphysic and a reductionist methodology in which living organisms are considered machines, many of the chapters in this volume place this paradigm into question. Pairing scientists and philosophers together, this volume explores what might be termed “the New Frontiers” of biology, namely contemporary areas of research that appear to call an updating, a supplementation, or a relaxation of some of the main tenets of the Modern Synthesis. Such areas...
Recent decades have witnessed an explosion of theoretical and empirical studies of sex allocation, transforming how we understand the allocation of resources to male and female reproduction in vertebrates, invertebrates, protozoa, and plants. In this landmark book, Stuart West synthesizes the vast literature on sex allocation, providing the conceptual framework the field has been lacking and demonstrating how sex-allocation studies can shed light on broader questions in evolutionary and behavioral biology. West clarifies fundamental misconceptions in the application of theory to empirical data. He examines the field's successes and failures, and describes the research areas where much import...
A plethora of different theories, models, and concepts make up the field of community ecology. Amid this vast body of work, is it possible to build one general theory of ecological communities? What other scientific areas might serve as a guiding framework? As it turns out, the core focus of community ecology—understanding patterns of diversity and composition of biological variants across space and time—is shared by evolutionary biology and its very coherent conceptual framework, population genetics theory. The Theory of Ecological Communities takes this as a starting point to pull together community ecology's various perspectives into a more unified whole. Mark Vellend builds a theory ...
This volume presents an overview of current accomplishments and future directions in ecological theory. The twenty-three chapters cover a broad range of important topics, from the physiology and behavior of individuals or groups of organisms, through population dynamics and community structure, to the ecology of ecosystems and the geochemical cycles of the entire biosphere. The authors focus on ways in which theory, whether expressed mathematically or verbally, can contribute to defining and solving fundamental problems in ecology. A second aim is to highlight areas where dialogue between theorists and empiricists is likely to be especially rewarding. The authors are R. M. Anderson, C. W. Cl...
The book provides an interesting analysis of the time-use data to examine the extent to which active ageing is occurring in India. It also synthesizes data from the National Sample Survey Office All India Survey and another survey undertaken in Kolkata, Bhubaneswar, and Ranchi (capital cities of East Indian states) to examine the role of the aged in the Indian Society. Nearly all countries in the world are experiencing an important issue of ageing. India faces its own set of challenges with its aging population due to the absence of a social security system—the shifting family dynamics questions the contribution of the elderly to the family in every aspect. Econometric models have been used in the book to study gender differences and variations across socio-economic conditions, correlating them to the contribution of the aged to their families and the extent of active ageing. The book broadens the understanding on the aged and facilitates their integration in the society so that they can age more actively. Active Ageing and Labour Market Engagement offers an analytical perspective to professionals, researchers, and policy makers interested in gerontology.
This volume summarizes studies in experimental evolution, outlining current techniques and applications, and presenting the field's range of research.