Acta Theriologica
Author:
Publisher:
Published: 2003
Total Pages: 1194
ISBN-13:
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Author: U.S. Energy Research Development Administration
Publisher:
Published: 1975
Total Pages: 102
ISBN-13:
DOWNLOAD EBOOKAuthor: N.C. Stenseth
Publisher: Springer Science & Business Media
Published: 2012-12-06
Total Pages: 359
ISBN-13: 9401123381
DOWNLOAD EBOOK4.1.1 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: U.S. Fish and Wildlife Service
Publisher:
Published: 1954
Total Pages: 346
ISBN-13:
DOWNLOAD EBOOKAuthor: F. B. Golley
Publisher: Cambridge University Press
Published: 1975-09-25
Total Pages: 482
ISBN-13: 0521206014
DOWNLOAD EBOOKThis volume, first published in 1975, looks at small mammal populations with emphasis being placed on their ecology and energy dynamics. It discusses the most productive research techniques and research objectives. The second part of the book deals with the roles of small mammals in ecosystems.
Author: R. Tamarin
Publisher: Birkhäuser
Published: 2013-11-21
Total Pages: 237
ISBN-13: 3034864167
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