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 345845
Title Combined effects of earthworm density and zinc on soil functioning
Author(s) Kools, S.A.E.; Lahr, J.; Hout, A. van der; Faber, J.H.
Source In: Controversies and solutions in environmental sciences; abstract book SETAC Europe 16th annual meeting. - Brussels (Belgium) : SETAC - p. 307 - 307.
Event Brussels (Belgium) : SETAC SETAC Europe 16th Annual Meeting, The Hague, 2006-05-01/2006-05-07
Department(s) Centre for Ecosystem Studies
ALTERRA Wageningen UR
Publication type Abstract in scientific journal or proceedings
Publication year 2006
Abstract In traditional environmental risk assessment for soils, interactions between biota, contaminants and soil functioning are seldom taken into account. The objective of this study was to investigate effects of zinc (0-620 mg Zn/kg DW) on soil functioning at different densities of the earthworm Lumbricus rubellus. The experiments were conducted using 1L microcosms equipped with respirometers. The presence of earthworms stimulated relevant soil processes: litter loss from the soil surface, litter fragmentation, soil organic matter content and soil respiration. Zinc was not lethal to earthworms, but negatively impacted worm growth and soil respiration. Litter loss from the soil surface was also decreased by zinc. This effect was dependent on worm density. The results of the study clearly indicate that the impact of zinc on soil processes may be modified by the presence and densities of key soil organisms that influence soil organic matter content. The outcome of this research will be used to make existing models for site-specific risk assessment more ecologically relevant, linking population effects of contaminants with effects on ecosystem functioning.
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