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Social Behaviour in Fluctuating Populations by Andrew Cockburn Pdf
This book forges a synthesis between the discipline of behavioural ecology and what is known of the social behaviour and population dynamics of cyclic populations of vertebrates, with particular discussion of the cyclic voles and lemmings. Areas of uncertainty, and those which show promise are identified, and tests of competing hypotheses are suggested. Finally, the relevance of social dynamics to population growth and decline are examined, and a hypothesis on the role of aggressiveness in expanding populations is presented.
Author : Charles J. Krebs Publisher : University of Chicago Press Page : 317 pages File Size : 55,5 Mb Release : 2013-04-19 Category : Science ISBN : 9780226010496
Population Fluctuations in Rodents by Charles J. Krebs Pdf
How did rodent outbreaks in Germany help to end World War I? What caused the destructive outbreak of rodents in Oregon and California in the late 1950s, the large population outbreak of lemmings in Scandinavia in 2010, and the great abundance of field mice in Scotland in the spring of 2011? Population fluctuations, or outbreaks, of rodents constitute one of the classic problems of animal ecology, and in Population Fluctuations in Rodents, Charles J. Krebs sifts through the last eighty years of research to draw out exactly what we know about rodent outbreaks and what should be the agenda for future research. Krebs has synthesized the research in this area, focusing mainly on the voles and lemmings of the Northern Hemisphere—his primary area of expertise—but also referring to the literature on rats and mice. He covers the patterns of changes in reproduction and mortality and the mechanisms that cause these changes—including predation, disease, food shortage, and social behavior—and discusses how landscapes can affect population changes, methodically presenting the hypotheses related to each topic before determining whether or not the data supports them. He ends on an expansive note, by turning his gaze outward and discussing how the research on rodent populations can apply to other terrestrial mammals. Geared toward advanced undergraduate students, graduate students, and practicing ecologists interested in rodent population studies, this book will also appeal to researchers seeking to manage rodent populations and to understand outbreaks in both natural and urban settings—or, conversely, to protect endangered species.
Author : Charles J. Krebs Publisher : University of Chicago Press Page : 317 pages File Size : 45,7 Mb Release : 2013-04-19 Category : Science ISBN : 9780226010359
Population Fluctuations in Rodents by Charles J. Krebs Pdf
How did rodent outbreaks in Germany help to end World War I? What caused the destructive outbreak of rodents in Oregon and California in the late 1950s, the large population outbreak of lemmings in Scandinavia in 2010, and the great abundance of field mice in Scotland in the spring of 2011? Population fluctuations, or outbreaks, of rodents constitute one of the classic problems of animal ecology, and in Population Fluctuations in Rodents, Charles J. Krebs sifts through the last eighty years of research to draw out exactly what we know about rodent outbreaks and what should be the agenda for future research. Krebs has synthesized the research in this area, focusing mainly on the voles and lemmings of the Northern Hemisphere—his primary area of expertise—but also referring to the literature on rats and mice. He covers the patterns of changes in reproduction and mortality and the mechanisms that cause these changes—including predation, disease, food shortage, and social behavior—and discusses how landscapes can affect population changes, methodically presenting the hypotheses related to each topic before determining whether or not the data supports them. He ends on an expansive note, by turning his gaze outward and discussing how the research on rodent populations can apply to other terrestrial mammals. Geared toward advanced undergraduate students, graduate students, and practicing ecologists interested in rodent population studies, this book will also appeal to researchers seeking to manage rodent populations and to understand outbreaks in both natural and urban settings—or, conversely, to protect endangered species.
Effects of Resource Distribution on Animal Plant Interactions by Mark D. Hunter,Takayuki Ohgushi,Peter W. Price Pdf
Aimed primarily at advanced graduate students and professional biologists, this book explores the degree to which animal*b1plant interactions are determined by plant and animal variability. Many of the patterns seen in natural communities appear to result from cascading effects up as well as down the trophic system. Variability among primary producers can influence animal and plant population quality and dynamics, community structure, and the evolution of animal*b1plant interations.
Animal Dispersal by N.C. Stenseth,W.Z. Lidicker Pdf
4.1.1 Demographic significance Confined populations grow more rapidly than populations from which dispersal is permitted (Lidicker, 1975; Krebs, 1979; Tamarin et at., 1984), and demography in island populations where dispersal is restricted differs greatly from nearby mainland populations (Lidicker, 1973; Tamarin, 1977, 1978; Gliwicz, 1980), clearly demonstrating the demographic signi ficance of dispersal. The prevalence of dispersal in rapidly expanding populations is held to be the best evidence for presaturation dispersal. Because dispersal reduces the growth rate of source populations, it is generally believed that emigration is not balanced by immigration, and that mortality of emigrants occurs as a result of movement into a 'sink' of unfavourable habitat. If such dispersal is age- or sex-biased, the demo graphy of the population is markedly affected, as a consequence of differ ences in mortality in the dispersive sex or age class. Habitat heterogeneity consequently underlies this interpretation of dispersal and its demographic consequences, although the spatial variability of environments is rarely assessed in dispersal studies.
Model Systems in Behavioral Ecology by Lee Alan Dugatkin Pdf
A key way that behavioral ecologists develop general theories of animal behavior is by studying one species or a closely related group of species--''model systems''--over a long period. This book brings together some of the field's most respected researchers to describe why they chose their systems, how they integrate theoretical, conceptual, and empirical work, lessons for the practice of the discipline, and potential avenues of future research. Their model systems encompass a wide range of animals and behavioral issues, from dung flies to sticklebacks, dolphins to African wild dogs, from foraging to aggression, territoriality to reproductive suppression. Model Systems in Behavioral Ecology offers an unprecedented ''systems'' focus and revealing insights into the confluence of personal curiosity and scientific inquiry. It will be an invaluable text for behavioral ecology courses and a helpful overview--and a preview of coming developments--for advanced researchers. The twenty-five chapters are divided into four sections: insects and arachnids, amphibians and reptiles, birds, and mammals. In addition to the editor, the contributors include Geoff A. Parker, Thomas D. Seeley, Naomi Pierce, Kern Reeve, Gerald S. Wilkinson, Bert Hölldobler and Flavio Roces, George W. Uetz, Michael J. Ryan and Gil Rosenthal, Judy Stamps, H. Carl Gerhardt, Barry Sinervo, Robert Warner, Manfred Milinski, David F. Westneat, Alan C. Kamil and Alan B. Bond, Paul Sherman, Jerram L. Brown, Anders Pape Møller, Marc Bekoff, Richard C. Connor, Joan B. Silk, Christopher Boesch, Scott Creel, A.H. Harcourt, and Tim Caro and M. J. Kelly.
United States. Congress. Senate. Committee on Government Operations. Subcommittee on Foreign Aid Expenditures
Author : United States. Congress. Senate. Committee on Government Operations. Subcommittee on Foreign Aid Expenditures Publisher : Unknown Page : 1386 pages File Size : 52,7 Mb Release : 1966 Category : Birth control ISBN : LOC:00173025737
The Ecology of the Ancient Greek World by Robert Sallares Pdf
A pioneering study in historical population biology, this book offers the first comprehensive ecological history of the ancient Greek world. It proposes a new model for treating the relationship between the population and the land, centering on the distribution and abundance of living organisms.
Social Behavior and Communication by P. Marler Pdf
Other books in this series focus on behavior at the individual level, approached from the viewpoints of biochemistry, anatomy, physiology, and psychology. In this volume we show how the functioning nervous systems of interacting individuals are coordinated, with the ultimate creation of complex social structures. The intri cacies of an individual's nervous system have been subject to intense inquiry, and research at the chemical, cellular, and organ levels has made remarkable progress. Work at the social level has been conducted somewhat independently, by way of behavioral phenomena and communicative interactions. With the emergence of a large body of information from neurobiology, the beginnings of an integrated approach are possible. New data on social functions are presented in the chapters to follow, and the forward-looking reader may wish to reflect on how they clarify understanding of interactions between two or more independent nervous systems. The outcome is harmonious social structure and improvement in the inclusive fitness of group-living individuals. We believe that there is in prospect a new way of looking at social function that will ultimately increase our understanding of the highest and most complex levels of neurobiology. The modern approach to the study of social behavior involves more than the recording of interactions between animals. Each individual brings to the process of social interaction the implications of its prior genetic and experiential history.
Author : Timothy M. Caro Publisher : University of Chicago Press Page : 508 pages File Size : 41,8 Mb Release : 1994-08-15 Category : Nature ISBN : 0226094340
Cheetahs of the Serengeti Plains by Timothy M. Caro Pdf
Cheetahs of the Serengeti Plains is the most comprehensive account of carnivore social behavior to date. Synthesizing more than a decade of research in the wild, this book offers a detailed account of the behavior and ecology of cheetahs. Compared with other large cats, and other mammals, cheetahs have an unusual breeding system; whereas lions live in prides and tigers are solitary, some cheetahs live in groups while others live by themselves. Tim Caro explores group and solitary living among cheetahs and discovers that the causes of social behavior vary dramatically, even within a single species. Why do cheetah cubs stay with their mother for a full year after weaning? Why do adolescents remain in groups? Why do adult males live in permanent associations with each other? Why do adult females live alone? Through observations on the costs and benefits of group living, Caro offers new insight into the complex behavior of this extraordinary species. For example, contrary to common belief about cooperative hunting in large carnivores, he shows that neither adolescents nor adult males benefit from hunting in groups. With many surprising findings, and through comparisons with other cat species, Caro enriches our understanding of the evolution of social behavior and offers new perspectives on conservation efforts to save this charismatic and endangered carnivore.
Mammalian Social Learning by Hilary O. Box,Kathleen R. Gibson Pdf
Social learning commonly refers to the social transfer of information and skill among individuals. It encompasses a wide range of behaviours that include where and how to obtain food, how to interact with members of one's own social group, and to identify and respond appropriately to predators. The behaviour of experienced individuals provides natural sources of information, by which inexperienced individuals may learn about the opportunities and hazards of their environment, and develop and modify their own behaviour as a result. A wide diversity of species is discussed in this book, some of which have never been discussed in this context before, and particular reference is made to their natural life strategies. Social learning in humans is also considered by comparison with other mammals, especially in their technological and craft traditions. Moreover, a discussion is included of the social learning abilities of prehistoric hominids.
Biotic Interactions in Arid Lands by John L. Cloudsley-Thompson Pdf
The exigencies of life in the desert environment have resulted in the se lection of a diversity of adaptations, both morphological and physiologi cal, in the flora and fauna. At the same time, many plants and most small animals are able not merely to exist but even to thrive under desert conditions - mainly by avoiding thermal extremes and by the refine ment of pre-existing abilities to economise in water. In the same way, the biotic interactions of the flora and fauna of the desert do not involve many new principles. Nevertheless, conditions in arid regions frequently do invoke refinements of the complex interrelations between predators and their prey, parasites and their hosts, as well as between herbivores and the plants upon which they feed. In this book, I shall discuss not only such interactions and their feedback effects, but also community processes and population dynamics in the desert. The physical conditions of the desert that principally affect predators and their prey are its openness and the paucity of cover. This is re stricted to scattered plants, occasional rocks, holes, and crevices in the ground. Furthermore, nightfall does not confer relative invisibility, as it does in many other ecobiomes, because of the clarity of the atmosphere. The bright starlight of the desert renders nearby objects visible even to the human eye, while an incandescent moon bathes the empty landscape with a flood of silver light. Consequently, adaptive coloration is func tional at all hours of the day and night.