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Author: N.C. Stenseth
Publisher: Springer Science & Business Media
ISBN: 9401123381
Category : Science
Languages : en
Pages : 359
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Book Description
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.
Author: N.C. Stenseth
Publisher: Springer Science & Business Media
ISBN: 9401123381
Category : Science
Languages : en
Pages : 359
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Book Description
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.
Author: W. Arbiter
Publisher:
ISBN:
Category : Uranium
Languages : en
Pages : 40
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Book Description
Author: British Ecological Society. Symposium
Publisher: Cambridge University Press
ISBN: 9780521549318
Category : Nature
Languages : en
Pages : 478
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Book Description
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.
Author: Edward R. Gotsky
Publisher:
ISBN:
Category : Alkali metal halide crystals
Languages : en
Pages : 24
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Book Description
Author: Jean Clobert
Publisher: Oxford University Press
ISBN: 0199608903
Category : Nature
Languages : en
Pages : 498
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Book Description
Provides an overview of the fast expanding field of dispersal ecology. The causes, mechanisms, and consequences of dispersal at the individual, population, species, and community levels are all considered.
Author: R. Moss
Publisher: Springer Science & Business Media
ISBN: 9780412222405
Category : Science
Languages : en
Pages : 84
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Book Description
This text on animal pollution dynamics should be of interest to those studying ecology, population dynamics and pest control.
Author: Giora Maymon
Publisher: Elsevier
ISBN: 0080559093
Category : Technology & Engineering
Languages : en
Pages : 475
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Book Description
Probabilistic structural dynamics offers unparalleled tools for analyzing uncertainties in structural design. Once avoided because it is mathematically rigorous, this technique has recently remerged with the aide of computer software. Written by an author/educator with 40 years of experience in structural design, this user friendly manual integrates theories, formulas and mathematical models to produce a guide that will allow professionals to quickly grasp concepts and start solving problems. In this book, the author uses simple examples that provide templates for creating of more robust case studies later in the book.*Problems are presented in an easy to understand form *Practical guide to software programs to solve design problems *Packed with examples and case studies of actual projects *Classical and the new stochastic factors of safety
Author: Max Quatinetz
Publisher:
ISBN:
Category : Dispersion strengthening
Languages : en
Pages : 36
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Book Description
Dispersion strengthened nickel produced from ultrafine comminuted powders.
Author: Johan A. Metz
Publisher: Springer
ISBN: 3662131595
Category : Mathematics
Languages : en
Pages : 526
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Book Description
Author: Facundo Rolf Morral
Publisher:
ISBN:
Category : Dispersion strengthening
Languages : en
Pages : 214
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Book Description
