Reconnaissance of Ground-water Quality in the Papio-Missouri River Natural Resources District, Eastern Nebraska, July Through September 1992 PDF Download
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Author: Ingrid Maria Verstraeten
Publisher:
ISBN:
Category : Aquifers
Languages : en
Pages : 106
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Book Description
Author: Ingrid Maria Verstraeten
Publisher:
ISBN:
Category : Aquifers
Languages : en
Pages : 106
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Book Description
Author:
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 480
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Book Description
Author: Ingrid Maria Verstraeten
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 92
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 924
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Book Description
Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 500
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Author:
Publisher:
ISBN:
Category : Geology, Stratigraphic
Languages : en
Pages : 126
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Book Description
Author: Ann Bleed
Publisher:
ISBN: 9781561610495
Category :
Languages : en
Pages : 153
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Author:
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 100
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Book Description
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. Eldredge
Publisher: Springer Science & Business Media
ISBN: 1461382718
Category : Science
Languages : en
Pages : 445
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Book Description
The case history approach has an impressive record of success in a variety of disciplines. Collections of case histories, casebooks, are now widely used in all sorts of specialties other than in their familiar appli cation to law and medicine. The case method had its formal beginning at Harvard in 1871 when Christopher Lagdell developed it as a means of teaching. It was so successful in teaching law that it was soon adopted in medical education, and the collection of cases provided the raw material for research on various diseases. Subsequently, the case history approach spread to such varied fields as business, psychology, management, and economics, and there are over 100 books in print that use this approach. The idea for a series of Casehooks in Earth Science grew from my experience in organizing and editing a collection of examples of one variety of sedimentary deposits. The prqject began as an effort to bring some order to a large number of descriptions of these deposits that were so varied in presentation and terminology that even specialists found them difficult to compare and analyze. Thus, from the beginning, it was evident that something more than a simple collection of papers was needed. Accordingly, the nearly fifty contributors worked together with George de Vries Klein and me to establish a standard format for presenting the case histories.
