Earthworm biomass as additional information for risk assessment of heavy metal biomagnification: A case study for dredged sediment-derived soils and polluted floodplain soils

Bart Vandecasteele, Jurgen Samyn, Paul Quataert, Bart Muys, Filip M.G. Tack

Research output: Contribution to journalA1: Web of Science-articlepeer-review

Abstract

The important role of earthworms in the biomagnification of heavy metals in terrestrial ecosystems is widely recognised. Differences in earthworm biomass between sites is mostly not accounted for in ecological risk assessment. These differences may be large depending on soil properties and pollution status. A survey of earthworm biomass and colonisation rate was carried out on dredged sediment-derived soils (DSDS). Results were compared with observations for the surrounding alluvial plains. Mainly grain size distribution and time since disposal determined earthworm biomass on DSDS, while soil pollution status of the DSDS was of lesser importance. Highest earthworm biomass was observed on sandy loam DSDS disposed at least 40 years ago. © 2004 Elsevier Ltd. All rights reserved.
Original languageEnglish
JournalEnvironmental Pollution
Volume129
Issue number3
Pages (from-to)363-375
Number of pages13
ISSN0269-7491
DOIs
Publication statusPublished - Jun-2004

Keywords

  • Alluvial
  • Colonisation
  • Earthworms
  • Landfills
  • Risk

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