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Sökning: onr:135075 > Dispersal power and...

Dispersal power and survival : carabids in a cultivated countryside / P. J. den Boer ; (with a mathematical appendix by J. Reddingius)

Boer, P. J. den (författare)
Wageningen, 1977
Engelska 190 s.
Serie: Miscellaneous papers / Landbouwhogeschool Wageningen, the Netherlands, 0083-6990 ; 14
Serie: Communication of the Biological station Wijster, 99-0127921-6 ; 169
  • Bok
Innehållsförteckning Ämnesord
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  • The distribution of carabid beetles over sampling sites -- Other features of the carabid beetles -- Summary of the conclusions -- Stating the problem -- Carabid beetles as an object of study -- The formulation of a set of hypotheses -- Escape and overflow as effects of dispersal -- The null hypothesis -- Founding as an effect of dispersal -- The alternative hypothesis -- Conditions for testing -- Method of investigation -- Relevant information on the carabid beetles of Drenthe, and how it was obtained -- Relative population sizes -- Dispersal groups -- Habitat groups -- Abundance groups -- How to estimate the degree of Realization of Population Replacement(RPR)? -- A model of DPS -- A preliminary test of our hypotheses -- Conditions for a single value of DPS -- An adequate measure of DPS -- Testing of the hypotheses 3.2 and 3.4 -- Results of the test -- The influence of j on the value of DPS -- Other testable expectations -- DPS and the size of individuals -- DPS and the degree of permanence of the habitat -- DPS and the progress of cultivation -- DPS and the 'stenotopy' or 'eurytopy' of species -- Disappeared populations -- Other tests of our hypotheses -- General conclusions -- Abundant and sparse species -- Dispersal as overflow -- Testable expectations -- Abundance and dispersal by flight -- Abundance and the % macr. ind. in dimorphic species -- DPS and the abundance of B-species -- DPS and the abundance of A- (and C-)species -- Nomadic and sedentary species -- Overflow' dispersal in carabid beetles -- Bias in our ideas on populations -- Survival of carabids in a cultivated countryside -- Populations lost from our study area -- Carabidspecies in the centre and at the fringes of geographical distribution -- Possible adaptation to the conditions of cultivation -- Carabid species favoured by cultivation -- Possibilities of Nature management -- Appendix A -- I. The carabid species -- II. The sampling sites -- III. The carabid species in the sampling sites -- Appendix B / J. REDDINGIUS -- I. Justification of the use of the Median test. -- II. The mathematical properties of DPS. 

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595.762.12:591.526 (UDK)
592 (DDC)
Ugj (kssb)
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