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 402351
Title Time-dependent, species-specific effects of N:P stoichiometry on grassland plant growth
Author(s) Fujita, Y.; Ruiter, P.C. de; Wassen, M.J.; Heil, G.W.
Source Plant and Soil 334 (2010)1-2. - ISSN 0032-079X - p. 99 - 112.
Department(s) Chair Soil Chemistry and Chemical Soil Quality
Biometris (WU MAT)
Publication type Refereed Article in a scientific journal
Publication year 2010
Keyword(s) nutrient availability - wetland graminoids - 2nd-year growth - phosphorus - nitrogen - fens - acquisition - budgets - limitation - vegetation
Abstract N and P have different eutrophication effects on grassland communities, yet the underlying mechanisms are poorly understood. To examine plant growth in response to the varying (relative) supply of N and P, we conducted a two-year greenhouse experiment. Five grasses and three herbs were grown with three N:P supply ratios at two overall nutrient supply levels. During the first year the plant growth was relatively low at both high and low N:P supply ratios, whereas during the second year the growth was especially low at a high N:P supply ratio. This second-year low growth was attributed to the high root death rate, which was influenced by a high N:P supply ratio rather than by the nutrient supply level. Species responded differently, especially in P uptake and loss at a high N:P supply ratio. Each species seemed to have a different strategy for P limitation, e.g. an efficient P uptake or a high P resorption rate. Species typical of P-limited grasslands had neither better P uptake nor better P retention at a high N:P supply ratio. This study quantitatively demonstrates an increased plant root death triggered by strong P limitation. This finding indicates a possible extra effect of N eutrophication on ecosystem functioning via changed N:P stoichiometry
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