Populations In Varying Environments

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Population Dynamics in Variable Environments

Author : Shripad Tuljapurkar
Publisher : Springer Science & Business Media
ISBN 13 : 3642516521
Total Pages : 148 pages
Book Rating : 4.6/5 (425 download)

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Book Synopsis Population Dynamics in Variable Environments by : Shripad Tuljapurkar

Download or read book Population Dynamics in Variable Environments written by Shripad Tuljapurkar and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Demography relates observable facts about individuals to the dynamics of populations. If the dynamics are linear and do not change over time, the classical theory of Lotka (1907) and Leslie (1945) is the central tool of demography. This book addresses the situation when the assumption of constancy is dropped. In many practical situations, a population will display unpredictable variation over time in its vital rates, which must then be described in statistical terms. Most of this book is concerned with the theory of populations which are subject to random temporal changes in their vital rates, although other kinds of variation (e. g. , cyclical) are also dealt with. The central questions are: how does temporal variation work its way into a population's future, and how does it affect our interpretation of a population's past. The results here are directed at demographers of humans and at popula tion biologists. The uneven mathematical level is dictated by the material, but the book should be accessible to readers interested in population the ory. (Readers looking for background or prerequisites will find much of it in Hal Caswell's Matrix population models: construction, analysis, and in terpretation (Sinauer 1989) ). This book is in essence a progress report and is deliberately brief; I hope that it is not mystifying. I have not attempted to be complete about either the history or the subject, although most sig nificant results and methods are presented.

Bird Species

Author : Dieter Thomas Tietze
Publisher : Springer
ISBN 13 : 3319916890
Total Pages : 270 pages
Book Rating : 4.3/5 (199 download)

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Book Synopsis Bird Species by : Dieter Thomas Tietze

Download or read book Bird Species written by Dieter Thomas Tietze and published by Springer. This book was released on 2018-11-19 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: The average person can name more bird species than they think, but do we really know what a bird “species” is? This open access book takes up several fascinating aspects of bird life to elucidate this basic concept in biology. From genetic and physiological basics to the phenomena of bird song and bird migration, it analyzes various interactions of birds – with their environment and other birds. Lastly, it shows imminent threats to birds in the Anthropocene, the era of global human impact. Although it seemed to be easy to define bird species, the advent of modern methods has challenged species definition and led to a multidisciplinary approach to classifying birds. One outstanding new toolbox comes with the more and more reasonably priced acquisition of whole-genome sequences that allow causative analyses of how bird species diversify. Speciation has reached a final stage when daughter species are reproductively isolated, but this stage is not easily detectable from the phenotype we observe. Culturally transmitted traits such as bird song seem to speed up speciation processes, while another behavioral trait, migration, helps birds to find food resources, and also coincides with higher chances of reaching new, inhabitable areas. In general, distribution is a major key to understanding speciation in birds. Examples of ecological speciation can be found in birds, and the constant interaction of birds with their biotic environment also contributes to evolutionary changes. In the Anthropocene, birds are confronted with rapid changes that are highly threatening for some species. Climate change forces birds to move their ranges, but may also disrupt well-established interactions between climate, vegetation, and food sources. This book brings together various disciplines involved in observing bird species come into existence, modify, and vanish. It is a rich resource for bird enthusiasts who want to understand various processes at the cutting edge of current research in more detail. At the same time it offers students the opportunity to see primarily unconnected, but booming big-data approaches such as genomics and biogeography meet in a topic of broad interest. Lastly, the book enables conservationists to better understand the uncertainties surrounding “species” as entities of protection.

Evolution in Changing Environments

Author : Richard Levins
Publisher : Princeton University Press
ISBN 13 : 9780691080628
Total Pages : 136 pages
Book Rating : 4.0/5 (86 download)

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Book Synopsis Evolution in Changing Environments by : Richard Levins

Download or read book Evolution in Changing Environments written by Richard Levins and published by Princeton University Press. This book was released on 1968-08-21 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Professor Levins, one of the leading explorers in the field of integrated population biology, considers the mutual interpenetration and joint evolution of organism and environment, occurring on several levels at once. Physiological and behavioral adaptations to short-term fluctuations of the environment condition the responses of populations to long-term changes and geographic gradients. These in turn affect the way species divide the environments among themselves in communities, and, therefore, the numbers of species which can coexist. Environment is treated here abstractly as pattern: patchiness, variability, range, etc. Populations are studied in their patterns: local heterogeneity, geographic variability, faunistic diversity, etc.

The Environmental Implications of Population Dynamics

Author : Lori M. Hunter
Publisher : Rand Corporation
ISBN 13 : 9780833043689
Total Pages : 128 pages
Book Rating : 4.0/5 (436 download)

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Book Synopsis The Environmental Implications of Population Dynamics by : Lori M. Hunter

Download or read book The Environmental Implications of Population Dynamics written by Lori M. Hunter and published by Rand Corporation. This book was released on 2000 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report discusses the relationship between population and environmental change, the forces that mediate this relationship, and how population dynamics specifically affect climate change and land-use change.

Populations in a Seasonal Environment

Author : Stephen D. Fretwell
Publisher : Princeton University Press
ISBN 13 : 9780691081069
Total Pages : 252 pages
Book Rating : 4.0/5 (81 download)

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Book Synopsis Populations in a Seasonal Environment by : Stephen D. Fretwell

Download or read book Populations in a Seasonal Environment written by Stephen D. Fretwell and published by Princeton University Press. This book was released on 1972-07-21 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most organisms live in a seasonal environment. During their life cycles, some species face seasons of cold and heat, aridity and abundant rainfall, migration and stable residence, breeding and nonbreeding. Populations grow and decline as supplies of materials essential to their survival wax and wane. Such qualitative truths as these flow obviously from field observations. In this original monograph, Stephen Fretwell analyzes the highly complex interaction between a population and a regularly varying environment in an attempt to define and measure seasonality as a critical parameter in the general theory of population regulation. Concerned primarily with the size and the habitat distribution of populations, Professor Fretwell develops simple models that, when applied to specific populations, usually of birds, demonstrate the effect of seasonal variations on the regulation of populations. He maintains that seasonality, as a concept, is essential to a full understanding of environmental interaction. During the course of his exposition, the author offers several new hypotheses, including theories affecting the breeding, numbers, distribution, and diversity of wintering birds, and a theory affecting the body size of sparrows.

Population Dynamics and Climate Change

Author : José Miguel Guzmán
Publisher : UN
ISBN 13 :
Total Pages : 258 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Population Dynamics and Climate Change by : José Miguel Guzmán

Download or read book Population Dynamics and Climate Change written by José Miguel Guzmán and published by UN. This book was released on 2009 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book broadens and deepens understanding of a wide range of population-climate change linkages. Incorporating population dynamics into research, policymaking and advocacy around climate change is critical for understanding trajectory of global greenhouse gas emissions, for developing and implementing adaptation plans and thus for global and national efforts to curtail this threat. The papers in this volume provide a substantive and methodological guide to the current state of knowledge on issues such as population growth and size and emissions; population vulnerability and adaptation linked to health, gender disparities and children; migration and urbanization; and the data and analytical needs for the next stages of policy-relevant research.

Analytical Population Dynamics

Author : T. Royama
Publisher : Springer Science & Business Media
ISBN 13 : 9401129169
Total Pages : 384 pages
Book Rating : 4.4/5 (11 download)

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Book Synopsis Analytical Population Dynamics by : T. Royama

Download or read book Analytical Population Dynamics written by T. Royama and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: A knowledge of animal population dynamics is essential for the proper management of natural resources and the environment. This book, now available in paperback, develops basic concepts and a rigorous methodology for the analysis of animal population dynamics to identify the underlying mechanisms.

Insect Ecology

Author : Timothy D. Schowalter
Publisher : Elsevier
ISBN 13 : 0080508812
Total Pages : 575 pages
Book Rating : 4.0/5 (85 download)

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Book Synopsis Insect Ecology by : Timothy D. Schowalter

Download or read book Insect Ecology written by Timothy D. Schowalter and published by Elsevier. This book was released on 2006-02-27 with total page 575 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dr. Timothy Schowalter has succeeded in creating a unique, updated treatment of insect ecology. This revised and expanded text looks at how insects adapt to environmental conditions while maintaining the ability to substantially alter their environment. It covers a range of topics- from individual insects that respond to local changes in the environment and affect resource distribution, to entire insect communities that have the capacity to modify ecosystem conditions.Insect Ecology, Second Edition, synthesizes the latest research in the field and has been produced in full color throughout. It is ideal for students in both entomology and ecology-focused programs.NEW TO THIS EDITION:* New topics such as elemental defense by plants, chaotic models, molecular methods to measure disperson, food web relationships, and more* Expanded sections on plant defenses, insect learning, evolutionary tradeoffs, conservation biology and more* Includes more than 350 new references* More than 40 new full-color figures

Plants in Changing Environments

Author : Fakhri A. Bazzaz
Publisher : Cambridge University Press
ISBN 13 : 9780521398435
Total Pages : 280 pages
Book Rating : 4.3/5 (984 download)

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Book Synopsis Plants in Changing Environments by : Fakhri A. Bazzaz

Download or read book Plants in Changing Environments written by Fakhri A. Bazzaz and published by Cambridge University Press. This book was released on 1996-10-13 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes the effects of disturbance, species competition and coexistence, and the processes of plant succession.

Structured-Population Models in Marine, Terrestrial, and Freshwater Systems

Author : Shripad Tuljapurkar
Publisher : Springer Science & Business Media
ISBN 13 : 1461559731
Total Pages : 644 pages
Book Rating : 4.4/5 (615 download)

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Book Synopsis Structured-Population Models in Marine, Terrestrial, and Freshwater Systems by : Shripad Tuljapurkar

Download or read book Structured-Population Models in Marine, Terrestrial, and Freshwater Systems written by Shripad Tuljapurkar and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the summer of 1993, twenty-six graduate and postdoctoral stu dents and fourteen lecturers converged on Cornell University for a summer school devoted to structured-population models. This school was one of a series to address concepts cutting across the traditional boundaries separating terrestrial, marine, and freshwa ter ecology. Earlier schools resulted in the books Patch Dynamics (S. A. Levin, T. M. Powell & J. H. Steele, eds., Springer-Verlag, Berlin, 1993) and Ecological Time Series (T. M. Powell & J. H. Steele, eds., Chapman and Hall, New York, 1995); a book on food webs is in preparation. Models of population structure (differences among individuals due to age, size, developmental stage, spatial location, or genotype) have an important place in studies of all three kinds of ecosystem. In choosing the participants and lecturers for the school, we se lected for diversity-biologists who knew some mathematics and mathematicians who knew some biology, field biologists sobered by encounters with messy data and theoreticians intoxicated by the elegance of the underlying mathematics, people concerned with long-term evolutionary problems and people concerned with the acute crises of conservation biology. For four weeks, these perspec tives swirled in discussions that started in the lecture hall and carried on into the sweltering Ithaca night. Diversity mayor may not increase stability, but it surely makes things interesting.

Using Science to Improve the BLM Wild Horse and Burro Program

Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309264944
Total Pages : 399 pages
Book Rating : 4.3/5 (92 download)

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Book Synopsis Using Science to Improve the BLM Wild Horse and Burro Program by : National Research Council

Download or read book Using Science to Improve the BLM Wild Horse and Burro Program written by National Research Council and published by National Academies Press. This book was released on 2013-10-04 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using Science to Improve the BLM Wild Horse and Burro Program: A Way Forward reviews the science that underpins the Bureau of Land Management's oversight of free-ranging horses and burros on federal public lands in the western United States, concluding that constructive changes could be implemented. The Wild Horse and Burro Program has not used scientifically rigorous methods to estimate the population sizes of horses and burros, to model the effects of management actions on the animals, or to assess the availability and use of forage on rangelands. Evidence suggests that horse populations are growing by 15 to 20 percent each year, a level that is unsustainable for maintaining healthy horse populations as well as healthy ecosystems. Promising fertility-control methods are available to help limit this population growth, however. In addition, science-based methods exist for improving population estimates, predicting the effects of management practices in order to maintain genetically diverse, healthy populations, and estimating the productivity of rangelands. Greater transparency in how science-based methods are used to inform management decisions may help increase public confidence in the Wild Horse and Burro Program.

International Handbook of Population and Environment

Author : Lori M. Hunter
Publisher : Springer Nature
ISBN 13 : 3030764338
Total Pages : 518 pages
Book Rating : 4.0/5 (37 download)

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Book Synopsis International Handbook of Population and Environment by : Lori M. Hunter

Download or read book International Handbook of Population and Environment written by Lori M. Hunter and published by Springer Nature. This book was released on 2022-03-11 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook presents a timely and comprehensive overview of theory, data, methods and research findings that connect human population dynamics and environmental context. It presents regional summaries of empirical findings on migration and environmental connections and summarizes environmental impacts of migration – such as urbanization and deforestation. It also offers background on the health implications of environmental conditions such as climate change, natural disasters, scarcity of natural resources, as well as on resource scarcity and fertility, gender considerations in population and environment, and the connections between population size, growth, composition and carbon emissions. This handbook helps readers to better understand the complexities within population-environment connections, in addition to some of the opportunities and challenges within environmental demography. As such this collection is an invaluable resource for students, researchers, and policy analysts in the areas of demography, migration, fertility, health and mortality, as well as environmental, global and development studies.

Concepts of Biology

Author : Samantha Fowler
Publisher :
ISBN 13 : 9781739015503
Total Pages : 0 pages
Book Rating : 4.0/5 (155 download)

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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 2023-05-12 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Black & white print. Concepts of Biology is designed for the typical introductory biology course for nonmajors, covering standard scope and sequence requirements. The text includes interesting applications and conveys the major themes of biology, with content that is meaningful and easy to understand. The book is designed to demonstrate biology concepts and to promote scientific literacy.

Genetic Homeostasis (Classic Reprint)

Author : I. Michael Lerner
Publisher : Forgotten Books
ISBN 13 : 9781391652634
Total Pages : 152 pages
Book Rating : 4.6/5 (526 download)

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Book Synopsis Genetic Homeostasis (Classic Reprint) by : I. Michael Lerner

Download or read book Genetic Homeostasis (Classic Reprint) written by I. Michael Lerner and published by Forgotten Books. This book was released on 2018-10-04 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Genetic Homeostasis Other types Of evidence, which contribute to the problem but which will be considered here in less detail include. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

U.S. Health in International Perspective

Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309264146
Total Pages : 421 pages
Book Rating : 4.3/5 (92 download)

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Book Synopsis U.S. Health in International Perspective by : National Research Council

Download or read book U.S. Health in International Perspective written by National Research Council and published by National Academies Press. This book was released on 2013-04-12 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: The United States is among the wealthiest nations in the world, but it is far from the healthiest. Although life expectancy and survival rates in the United States have improved dramatically over the past century, Americans live shorter lives and experience more injuries and illnesses than people in other high-income countries. The U.S. health disadvantage cannot be attributed solely to the adverse health status of racial or ethnic minorities or poor people: even highly advantaged Americans are in worse health than their counterparts in other, "peer" countries. In light of the new and growing evidence about the U.S. health disadvantage, the National Institutes of Health asked the National Research Council (NRC) and the Institute of Medicine (IOM) to convene a panel of experts to study the issue. The Panel on Understanding Cross-National Health Differences Among High-Income Countries examined whether the U.S. health disadvantage exists across the life span, considered potential explanations, and assessed the larger implications of the findings. U.S. Health in International Perspective presents detailed evidence on the issue, explores the possible explanations for the shorter and less healthy lives of Americans than those of people in comparable countries, and recommends actions by both government and nongovernment agencies and organizations to address the U.S. health disadvantage.

Populations in a Seasonal Environment. (MPB-5)

Author : Stephen D. Fretwell
Publisher : Princeton University Press
ISBN 13 : 0691209642
Total Pages : 246 pages
Book Rating : 4.6/5 (912 download)

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Book Synopsis Populations in a Seasonal Environment. (MPB-5) by : Stephen D. Fretwell

Download or read book Populations in a Seasonal Environment. (MPB-5) written by Stephen D. Fretwell and published by Princeton University Press. This book was released on 2020-03-31 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most organisms live in a seasonal environment. During their life cycles, some species face seasons of cold and heat, aridity and abundant rainfall, migration and stable residence, breeding and nonbreeding. Populations grow and decline as supplies of materials essential to their survival wax and wane. Such qualitative truths as these flow obviously from field observations. In this original monograph, Stephen Fretwell analyzes the highly complex interaction between a population and a regularly varying environment in an attempt to define and measure seasonality as a critical parameter in the general theory of population regulation. Concerned primarily with the size and the habitat distribution of populations, Professor Fretwell develops simple models that, when applied to specific populations, usually of birds, demonstrate the effect of seasonal variations on the regulation of populations. He maintains that seasonality, as a concept, is essential to a full understanding of environmental interaction. During the course of his exposition, the author offers several new hypotheses, including theories affecting the breeding, numbers, distribution, and diversity of wintering birds, and a theory affecting the body size of sparrows.

population genetics and ecology

Author : Samuel Karlin
Publisher : Elsevier
ISBN 13 : 0323142230
Total Pages : 847 pages
Book Rating : 4.3/5 (231 download)

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Book Synopsis population genetics and ecology by : Samuel Karlin

Download or read book population genetics and ecology written by Samuel Karlin and published by Elsevier. This book was released on 2012-12-02 with total page 847 pages. Available in PDF, EPUB and Kindle. Book excerpt: Population Genetics and Ecology is a collection of papers presented at a 1975 conference-workshop held in Israel and is devoted to topics in population genetics and ecology. Contributors discuss topics related to population genetics and ecology, including the determinants of genetic variation in natural populations; experimental design and analysis of field and laboratory data; and theory and applications of mathematical models in population genetics. The book describes a number of field and laboratory studies that focus on a variety of spatial and temporal character and enzyme frequency patterns in natural populations, along with possible associations between these patterns and ecological parameters. This volume is organized into three sections encompassing 31 chapters and begins by summarizing the results of field and laboratory research that investigated gene frequency patterns in space and time of animal and plant populations. This book then explains the origin of new taxa; animal and plant domestication; variation in heritability related to parental age; and problems in the genetics of certain haplo-diploid populations. The next section offers a combination of data analyses and interpretations of related models, with some papers devoted to the origin of race formation and the interaction between sexual selection and natural selection. Among the theoretical studies presented are facets of selection migration interaction; stochastic selection effects; properties of density and frequency dependent selection; concepts and measures of genetic distance and speciation; aspects of altruism; and kin selection. This book will be of interest to naturalists, experimentalists, theoreticians, statisticians, and mathematicians.