Index Generalis Seriei Acta Zoologica Fennica 101-150 (1963-1977) PDF Download
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Author: Olof Biström
Publisher:
ISBN: 9789516610248
Category : Botany
Languages : en
Pages : 14
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Book Description
Author: Olof Biström
Publisher:
ISBN: 9789516610248
Category : Botany
Languages : en
Pages : 14
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Book Description
Author:
Publisher:
ISBN:
Category : Animals
Languages : en
Pages : 260
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Author:
Publisher:
ISBN:
Category : Entomology
Languages : en
Pages : 330
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Publisher:
ISBN:
Category : Union catalogs
Languages : en
Pages : 1032
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Book Description
Includes entries for maps and atlases.
Author: Library of Congress
Publisher:
ISBN:
Category :
Languages : en
Pages : 1000
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Author: Societas pro Fauna et Flora Fennica
Publisher:
ISBN:
Category : Botany
Languages : un
Pages : 434
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Book Description
Author: Leonard F. Ruggiero
Publisher:
ISBN:
Category : American marten
Languages : en
Pages : 198
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Book Description
This cooperative effort by USDA Forest Service Research and the National Forest System assesses the state of knowledge related to the conservation status of four forest carnivores in the western United States: American marten, fisher, lynx, and wolverine. The conservation assessment reviews the biology and ecology of these species. It also discusses management considerations stemming from what is known and identifies information needed. Overall, we found huge knowledge gaps that make it difficult to evaluate the species' conservation status.
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: William J. Zielinski
Publisher: DIANE Publishing
ISBN: 0788136283
Category :
Languages : en
Pages : 200
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Book Description
In the Western U.S., the forest carnivores in this assessment are limited to boreal forest ecosystems. These forests are characterized by extensive landscapes with a component of structurally complex, mesic coniferous stands that are characteristic of late stages of forest development. This report assesses the scientific basis for conserving the American marten, fisher, lynx, & wolverine. It consists of literature reviews for each species & a discussion of management considerations & information needs. Comprehensive!
Author: Adrian Barnett
Publisher: Cambridge University Press
ISBN: 0521881587
Category : Nature
Languages : en
Pages : 423
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Book Description
The first detailed collation of the evolution, ecology and conservation of some of South America's least-known, and most endangered, primates.
