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Effects of nutrient supply on the importance of above- and below-ground competition in successional grassland species

Jong, J.O. de (1989) Effects of nutrient supply on the importance of above- and below-ground competition in successional grassland species. Master's Thesis / Essay, Biology.

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Abstract

Recent discussions on the importance of above and below ground competition along productivity gradients are indicating a need for experiments separating those types of competition. We studied the effects of above and below ground competition at different nutrient levels, to evaluate their relative importance on four species from a grassland successional series. The total effect of competition did not change but its quality did change at different nutrient supplies. Most of the reduction of growth at the lowest nutrient level could be ascribed to root competition. At a high nutrient level the relative importance of root and shoot competition was the same or shoot competition was more important. Allocation and architecture measurements indicated that plasticity of architecture (distribution within the shoot) was a better explanation for the successional position of the experimental species than the dry matter allocation to roots, stems and leaves.

Item Type: Thesis (Master's Thesis / Essay)
Degree programme: Biology
Thesis type: Master's Thesis / Essay
Language: English
Date Deposited: 15 Feb 2018 07:47
Last Modified: 15 Feb 2018 07:47
URI: http://fse.studenttheses.ub.rug.nl/id/eprint/10003

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