Read e-book online Evolutionary Ecology of Plant-Plant Interactions: An PDF

By Christian Damgaard

ISBN-10: 8779341160

ISBN-13: 9788779341166

ISBN-10: 8779348750

ISBN-13: 9788779348752

Options and easy empirical types which are important within the learn of the quantitative points of evolutionary ecology of plant - plant interactions is mentioned and constructed, and using uncomplicated empirical versions within the statistical research of plant ecological info is exemplified. distinct awareness is paid to the implications of the sedentary existence type of grownup vegetation and the following robust interactions among neighbouring crops. The monograph presents an outline of alternative evolutionary and ecological empirical plant inhabitants versions and conceptual hyperlinks among various modelling methods, e.g., spatial individual-based or plant measurement particular modelling and the equilibrium stipulations of mean-field versions. The organic info underlying the mentioned types is barely in brief mentioned.

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Additional info for Evolutionary Ecology of Plant-Plant Interactions: An Empirical Modelling Approach

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The probability of germination, establishment, and reaching reproductive age in a natural habitat is a critical and variable factor in predicting population growth. Crawley et al. (1993) compared estimates of population growth of transgenic rapeseed (Brassica napus) in a natural habitat obtained by either using independent information on seed germination, mortality, and fecundity, or measuring population growth directly by the difference in the number of seedlings from year to year. They obtained qualitatively different estimates of population growth by the two approaches: When the independently obtained information on mortality and fecundity was used, the rapeseed population was predicted to increase in density, whereas the directly obtained estimate of population growth showed that the rapeseed population decreased in density.

Crawley et al. (1993) compared estimates of population growth of transgenic rapeseed (Brassica napus) in a natural habitat obtained by either using independent information on seed germination, mortality, and fecundity, or measuring population growth directly by the difference in the number of seedlings from year to year. They obtained qualitatively different estimates of population growth by the two approaches: When the independently obtained information on mortality and fecundity was used, the rapeseed population was predicted to increase in density, whereas the directly obtained estimate of population growth showed that the rapeseed population decreased in density.

2 Competition between two genotypes of Arabidopsis thaliana II The fecundity was estimated from the dry weight data by linear regres­ sions. The two genotypes differed significantly in the way they converted biomass at the end of the growing season into fecundity; genotype C24 produced relatively more seeds per biomass (Damgaard and Jensen 2002). 3). Depending on the prob­ ability of germination, establishment and reaching reproductive age either “coexistence of the two genotypes” or “genotype C24 would outcompete Nd-1” was the predicted most likely long-term ecological scenario.

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Evolutionary Ecology of Plant-Plant Interactions: An Empirical Modelling Approach by Christian Damgaard


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