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Population Homeostasis
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Book Synopsis Population Homeostasis by : Christopher J. Paradise
Download or read book Population Homeostasis written by Christopher J. Paradise and published by Momentum Press. This book was released on 2016-04-27 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book will synthesize the concepts of selection against individuals in response to environmental change to illustrate how selection against individuals results in homeostasis at the population level. For instance, selection against the light phenotype of the peppered moth during the early part of the industrial revolution led to an increase of the dark phenotype, which was better camouflaged against the soot that accumulated on tree bark as a result of burning coal. Populations are shown to be regulated by feedback mechanisms, several of which are discussed here. Populations are regulated by extrinsic factors, such as competition and predation, and that lead to changes in intrinsic factors, such as reproduction. Changes in population density often lead to initiation of feedback mechanisms, such as changes in birth or death rates. In a final example, pollutants are shown to be a factor that can disrupt homeostasis of populations. In particular, populations of top predators, such as raptors, have suffered due to biomagnification of toxins.
Book Synopsis Organismal Homeostasis by : Christopher J. Paradise
Download or read book Organismal Homeostasis written by Christopher J. Paradise and published by Momentum Press. This book was released on 2016-04-27 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organisms maintain homeostasis in a variety of ways. In the first part of this book, mammals are shown to regulate their body temperatures through homeostatic mechanisms. The data from thermoregulation experiments that demonstrated the role of neurons in body temperature homeostasis are examined. The second part of this book discusses how organisms allocate the limited energy that is available to them for survival, growth, or reproduction. Excess energy in individuals can translate to growth of populations: if enough remains after survival and growth, it can be allocated to reproduction. However, even closely related organisms may have different strategies for allocating resources that are dependent upon the environmental conditions in which they exist.
Book Synopsis The Mechanism of Population Homeostasis in Animals by : I. A. Shilov
Download or read book The Mechanism of Population Homeostasis in Animals written by I. A. Shilov and published by . This book was released on 1967 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Population Pressure and Cultural Adjustment by : Virginia Deane Abernethy
Download or read book Population Pressure and Cultural Adjustment written by Virginia Deane Abernethy and published by Routledge. This book was released on 2018-04-17 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integrating research from anthropology, biology, and history, this provocative, brilliant book proposes a theory of demographic equilibrium. The author's hypothesis is that human beings, like many other species, are able to adjust their population numbers to the carrying capacity of the environment. Abernethy points out that in response to perception of scarcity or abundance of resources, culturally mediated values, beliefs and behavioral patterns are modified in ways that can either raise or lower rates of population growth. Abernethy in this way moves beyond the ideological debates that have sundered the field of policy and population. In real world time and space, cultural adjustments that balance population and resources are made over a long stretch in relatively stable or known environments. These adjustments also operate in processes that involve technological advances that appear to increase carrying capacity, and these usually act to support and underwrite population growth in any given area. In her new introduction to this first paperback edition, Abernethy shows how many of the cultural changes the book predicted in 1979 have come to pass. She details a complex of behaviors that favor single life-styles or small family size that have contributed to low fertility rates among native-born Americans while fertility rates among immigrants continue to climb. Population Pressure and Cultural Adjustment is not simply a theoretical slogan, but discusses a rich set of different cultural situations where this homeostatic process has been disrupted or aborted. Often, disruption occurs after the infusion of foreign value systems as well as new forms of technological innovation, or when highly permeable social boundaries result in the importation of resources for which the limits and consequences are not fully appreciated by the host population. This work will inevitably be controversial because of its implications for the limits as well as the potential of public policy in both advanced and underdeveloped societies.
Book Synopsis Mechanisms of Population Homeostasis in Anagasta Ecosystem by : S. E. Flanders
Download or read book Mechanisms of Population Homeostasis in Anagasta Ecosystem written by S. E. Flanders and published by . This book was released on 1968 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ecological Homeostasis by : Christopher J. Paradise
Download or read book Ecological Homeostasis written by Christopher J. Paradise and published by Momentum Press. This book was released on 2016-04-27 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: Individual organisms contribute to nutrient cycling in ecological systems, which is shown to be a mechanism of homeostasis at that level. The phosphorus and nitrogen cycles are used to illustrate effects of changes in populations or communities on the cycling of these nutrients. Major disturbances such as deforestation and global climate change disrupt nutrient cycles and ecological system homeostasis. Data are examined to determine effects of deforestation on nutrient cycling. Increasing atmospheric carbon dioxide and global climate change are disrupting ecological systems’ homeostasis, and several studies are used to show how this is happening, including changes in primary production, temperature and precipitation patterns. This book also discusses the role of individual species in filtering contaminants and pollutants from ecological systems.
Book Synopsis Population Homeostasis in Sub-saharan Africa by : David de la Croix
Download or read book Population Homeostasis in Sub-saharan Africa written by David de la Croix and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mechanisms of Population Homeostasis in Anagasta Ecosystems by : Stanley E. Flanders
Download or read book Mechanisms of Population Homeostasis in Anagasta Ecosystems written by Stanley E. Flanders and published by . This book was released on 1968 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Concepts of Biology by : Samantha Fowler
Download or read book Concepts of Biology written by Samantha Fowler and published by . This book was released on 2017-12-30 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concepts of Biology is designed for the introductory biology course for nonmajors taught at most two- and four-year colleges. The scope, sequence, and level of the program are designed to match typical course syllabi in the market. Concepts of Biology includes interesting applications, features a rich art program, and conveys the major themes of biology. The images in this textbook are grayscale.
Book Synopsis International Migration and Population Homeostasis by : David L. Elliott
Download or read book International Migration and Population Homeostasis written by David L. Elliott and published by . This book was released on 1984 with total page 694 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ecosystem Homeostasis by : P. Trojan
Download or read book Ecosystem Homeostasis written by P. Trojan and published by Springer Science & Business Media. This book was released on 1984-03-31 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Neurobiology of Body Fluid Homeostasis by : Laurival Antonio De Luca Jr.
Download or read book Neurobiology of Body Fluid Homeostasis written by Laurival Antonio De Luca Jr. and published by CRC Press. This book was released on 2013-10-01 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: A timely symposium entitled Body-Fluid Homeostasis: Transduction and Integration was held at Araraquara, São Paulo, Brazil in 2011. This meeting was convened as an official satellite of a joint gathering of the International Society for Autonomic Neuroscience (ISAN) and the American Autonomic Society (AAS) held in Buzios, Rio de Janeiro. Broad international participation at this event generated stimulating discussion among the invited speakers, leading to the publication of Neurobiology of Body Fluid Homeostasis: Transduction and Integration. Drawn from the proceedings and filled with rich examples of integrative neurobiology and regulatory physiology, this volume: Provides updated research using human and animal models for the control of bodily fluids, thirst, and salt appetite Explores neural and endocrine control of body fluid balance, arterial pressure, thermoregulation, and ingestive behavior Discusses recent developments in molecular genetics, cell biology, and behavioral plasticity Reviews key aspects of brain serotonin and steroid and peptide control of fluid consumption and arterial pressure The book highlights research conducted by leading scientists on signal transduction and sensory afferent mechanisms, molecular genetics, perinatal and adult long-term influences on regulation, central neural integrative circuitry, and autonomic/neuroendocrine effector systems. The findings discussed by the learned contributors are relevant for a basic understanding of disorders such as heat injury, hypertension, and excess salt intake. A unique reference on the neurobiology of body fluid homeostasis, this volume is certain to fuel additional research and stimulate further debate on the topic.
Book Synopsis Human Population Dynamics by : Helen Macbeth
Download or read book Human Population Dynamics written by Helen Macbeth and published by Cambridge University Press. This book was released on 2002-06-20 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: In human populations, biological, social, spatial, ecological and economic aspects of existence are inextricably linked, demanding a holistic approach to their study. Many undergraduate and postgraduate courses now emphasise the value of studying human populations using theoretical frameworks and methodologies from different traditional disciplines. Human Population Dynamics introduces such frameworks and methodologies whilst demonstrating how changes in human population structure can be addressed from several different academic perspectives. As such, the book contains contributions from world-renowned researchers in demography, social and biological anthropology, genetics, biology, sociology, ecology, history and human geography. In particular, the contributors emphasise the lability of many population structures and boundaries, as viewed from their area of expertise. This text is aimed at undergraduate students, graduates and academic researchers from any academic discipline which considers human populations.
Book Synopsis Population Regulation by : Robert H. Tamarin
Download or read book Population Regulation written by Robert H. Tamarin and published by . This book was released on 1978 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Natural Regulation of Animal Populations by : Ian A. McLaren
Download or read book Natural Regulation of Animal Populations written by Ian A. McLaren and published by Routledge. This book was released on 2017-07-05 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surveying an area dense with conflicting observations and ideas, this volume vividly depicts the current state of knowledge as well as the great diversity of opinion in the field of population ecology. Ten papers by outstanding authorities focus on three main issues-the effects of environment and population density on population dynamics, the influence of animal behavior on population growth, and the possibilities of genetic feedback or short-term evolutionary change on control of animal populations. An incisive introduction by the editor establishes a frame of reference and supplies succinct resolutions of some of the important controversies dealt with in these pages.
Book Synopsis Natural Regulation of Animal Populations by : McLaren
Download or read book Natural Regulation of Animal Populations written by McLaren and published by Transaction Publishers. This book was released on 1971 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Genetic Homeostasis by : Isadore Michael Lerner
Download or read book Genetic Homeostasis written by Isadore Michael Lerner and published by . This book was released on 1970 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
