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 27333
Title Kinetics of luxury uptake of phosphate by algae-dominated benthic communities.
Author(s) Portielje, R.; Lijklema, L.
Source Hydrobiologia 275-276 (1994)1. - ISSN 0018-8158 - p. 349 - 358.
Department(s) Aquatic Ecology and Water Quality Management
Publication type Refereed Article in a scientific journal
Publication year 1994
Abstract The uptake of phosphate by benthic communities, dominated by living algae, previously exposed to different levels of external nutrient loading, exhibited first-order kinetics with respect to the intracellular P-deficit. This deficit is the difference between the maximum and the actual intracellular P-concentration. The maximum storage capacity of P per unit of dry weight was positively correlated to the level of external nutrient loading, whereas the phosphate uptake rate constant was negatively correlated. The observed internal P concentrations in the benthic layer of test ditches over a period of two and a half years, indicated a slight decrease towards a minimum value in a ditch with a low external P-input. In a medium loaded ditch the internal P-concentration did not change significantly. In a high loaded ditch increasing internal P-concentrations over time were observed, towards P-saturation of the benthic community.
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