9780412293306 - animal dispersal: small mammals as a model (3 Ergebnisse)
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Zustand: New. In.
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Buch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - 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.
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Zustand: New. This work provides a synthesis of the literature on dispersal in small mammal species and uses them as models for dispersal in other animals. Editor(s): Stenseth, Nils Chr.; Lidicker, William Z. Num Pages: 365 pages, biography. BIC Classification: PS. Category: (P) Professional & Vocational; (UP) Postgraduate, Rese…arch & Scholarly. Dimension: 234 x 156 x 22. Weight in Grams: 713. . 1991. Hardback. . . . . Books ship from the US and Ireland.
