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Animal Dispersal

Animal Dispersal
Author: N.C. Stenseth
Publisher: Springer Science & Business Media
Total Pages: 359
Release: 2012-12-06
Genre: Science
ISBN: 9401123381
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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.

Animal-Mediated Dispersal in Understudied Systems

Animal-Mediated Dispersal in Understudied Systems
Author: Casper H. A. Van Leeuwen
Publisher: Frontiers Media SA
Total Pages: 196
Release: 2020-02-13
Genre:
ISBN: 2889634779
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This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.

Oak Seed Dispersal

Oak Seed Dispersal
Author: Michael A. Steele
Publisher: Johns Hopkins University Press
Total Pages: 480
Release: 2021-01-05
Genre: Science
ISBN: 1421439018
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Theimer, an accomplished ecologist.

Dispersal Ecology and Evolution

Dispersal Ecology and Evolution
Author: Jean Clobert
Publisher: OUP Oxford
Total Pages: 496
Release: 2012-09-27
Genre: Science
ISBN: 0191640360
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Now that so many ecosystems face rapid and major environmental change, the ability of species to respond to these changes by dispersing or moving between different patches of habitat can be crucial to ensuring their survival. Understanding dispersal has become key to understanding how populations may persist. Dispersal Ecology and Evolution provides a timely and wide-ranging overview of the fast expanding field of dispersal ecology, incorporating the very latest research. The causes, mechanisms, and consequences of dispersal at the individual, population, species, and community levels are considered. Perspectives and insights are offered from the fields of evolution, behavioural ecology, conservation biology, and genetics. Throughout the book theoretical approaches are combined with empirical data, and care has been taken to include examples from as wide a range of species as possible - both plant and animal.

Animal Dispersion in Relation to Social Behaviour

Animal Dispersion in Relation to Social Behaviour
Author: Vero Copner Wynne-Edwards
Publisher: Edinburgh : Oliver and Boyd
Total Pages: 698
Release: 1962
Genre: Animal behavior
ISBN:
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An outline of the principles of animal dispersion. The integration of social groups by visible signals. Dispersion in the breeding season: birds. Display characters and natural selection. Fourther consideration of castes in animal societies. Timing and synchronisation. Vertical migration of the plankton. Fluctuations, irruptions and emigrations. Recruitment through reproduction. Socially-induced mortality. Deferment of growth and maturity.

Ecology and Evolution of Cancer

Ecology and Evolution of Cancer
Author: Beata Ujvari
Publisher: Academic Press
Total Pages: 292
Release: 2017-02-08
Genre: Medical
ISBN: 0128043806
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Ecology and Evolution of Cancer is a timely work outlining ideas that not only represent a substantial and original contribution to the fields of evolution, ecology, and cancer, but also goes beyond by connecting the interfaces of these disciplines. This work engages the expertise of a multidisciplinary research team to collate and review the latest knowledge and developments in this exciting research field. The evolutionary perspective of cancer has gained significant international recognition and interest, which is fully understandable given that somatic cellular selection and evolution are elegant explanations for carcinogenesis. Cancer is now generally accepted to be an evolutionary and ecological process with complex interactions between tumor cells and their environment sharing many similarities with organismal evolution. As a critical contribution to this field of research the book is important and relevant for the applications of evolutionary biology to understand the origin of cancers, to control neoplastic progression, and to prevent therapeutic failures. Covers all aspects of the evolution of cancer, appealing to researchers seeking to understand its origins and effects of treatments on its progression, as well as to lecturers in evolutionary medicine Functions as both an introduction to cancer and evolution and a review of the current research on this burgeoning, exciting field, presented by an international group of leading editors and contributors Improves understanding of the origin and the evolution of cancer, aiding efforts to determine how this disease interferes with biotic interactions that govern ecosystems Highlights research that intends to apply evolutionary principles to help predict emergence and metastatic progression with the aim of improving therapies

Dispersal Ecology

Dispersal Ecology
Author: British Ecological Society. Symposium
Publisher: Cambridge University Press
Total Pages: 478
Release: 2002-08
Genre: Nature
ISBN: 9780521549318
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Dispersal has become central to many questions in theoretical and applied ecology in recent years. In this volume a team of leading ecologists aim to provide the advanced student and researcher with a comprehensive review of dispersal and its implications for modern ecology.

Seed Dispersal

Seed Dispersal
Author: Andrew J. Dennis
Publisher: CABI
Total Pages: 704
Release: 2007
Genre: Technology & Engineering
ISBN: 1845931661
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Fresh concepts in the study of seed dispersal are spurring a host of exciting new questions, new answers to old questions, new methods and approaches, and a reinvigoration of the field.Seed Dispersal: Theory and its Application in a Changing World presents both recent advances and reviews of current knowledge demonstrating the vigour and vibrancy of the field. It provides new perspectives and directions at a time when efforts to meet growing environmental challenges threatening natural systems are of utmost importance.

Seed Dispersal

Seed Dispersal
Author: David R. Murray
Publisher: Academic Press
Total Pages: 337
Release: 2012-12-02
Genre: Science
ISBN: 0323139884
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Seed Dispersal focuses on the mechanics and processes involved in seed dispersal, including its implications in ecology, animal behavior, plant and animal biogeography, speciation, and evolution. The selection first elaborates on the aerial motion of seeds, fruits, spores, and pollen and seed dispersal by water. Discussions focus on seed dispersal by rain, river, and flood, effective seed dispersal by ocean currents compared to other vectors, aerodynamic forces and their effects, and launching and release mechanisms. The text then takes a look at seed dispersal syndromes in Australian Acacia, including inference of dispersal syndromes, seed dispersal syndromes, ecological consequences of seed dispersal, and evolutionary derivation of dispersal syndromes. The publication ponders on seed dispersal by fruit-eating birds and mammals, rodents as seed consumers and dispersers, and seed dispersal in relation to fire. Topics include fire as a dispersal vector, long distance dispersal, granivorous rodents and the fates of seeds, determinants of the fate path, population ecology of seed dispersal, and foraging for fruits. The selection is a valuable reference for researchers interested in the factors involved in seed dispersal.