Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 498873
Title Linking root traits and competitive success in grassland species
Author(s) Ravenek, Janneke M.; Mommer, Liesje; Visser, Eric J.W.; Ruijven, Jasper van; Paauw, Jan Willem van der; Smit-Tiekstra, Annemiek; Caluwe, Hannie de; Kroon, Hans de
Source Plant and Soil 407 (2016)1. - ISSN 0032-079X - p. 39 - 53.
Department(s) Nature Conservation and Plant Ecology
IMARES Diensten
Publication type Refereed Article in a scientific journal
Publication year 2016
Keyword(s) Nutrient uptake - Relative growth rate - Root length density - Selective root placement - Soil nutrient heterogeneity - Specific root length

Background and aims: Competition is an important force shaping plant communities. Here we test the hypothesis that high overall root length density and selective root placement in nutrient patches, as two alternative strategies, confer competitive advantage in species mixtures. Methods: We performed a full-factorial pairwise competition experiment with eight grassland species in soil with homogeneously distributed nutrients, or with nutrients concentrated in a single patch. We measured species-specific relative growth rate, root length density, selective root placement, and ion uptake rates of all species in monocultures and in mixtures. Results: Grasses showed higher specific root length overall and forbs a higher selective root placement in the nutrient patch. However, relative growth rate and root length density were more strongly related to competitive ability (measured as relative yield per plant), with little distinction between grasses and forbs. Conclusions: Our results suggest that short-term competitive success was related to fast growth and high root densities, irrespective of nutrient heterogeneity. Developing a large root mass quickly may overwhelm the importance of other traits in the establishment phase of plants, although these other traits may prove to be important in the long run.

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