Trace metal availability and effects on benthic community structure in floodplain lakes

C. van Griethuysen, J. van Baren, E.T.H.M. Peeters, A.A. Koelmans

Research output: Contribution to journalArticleAcademicpeer-review

46 Citations (Scopus)

Abstract

Effects of contaminants on communities are difficult to assess and poorly understood. We analyzed in situ effects of trace metals and common environmental variables on benthic macroinvertebrate communities in floodplain lakes. Alternative measures of trace metal availability were evaluated, including total metals, metals normalized on organic carbon (OC) or clay, simultaneously extracted metals (SEM), combinations of SEM and acid-volatile sulfide (AVS), and metals accumulated by detritivore invertebrates (Oligochaeta). Accumulated metal concentrations correlated positively with sediment trace metals and negatively with surface water dissolved OC. Sixty-eight percent of the variation in benthic community composition was explained by a combination of 11 environmental variables, including sediment, water, and morphological characteristics with trace metals. Metals explained 2 to 6% of the community composition when SEM — AVS or individual SEM concentrations were regarded. In contrast, total, normalized, and accumulated metals were not significantly linked to community composition. We conclude that examination of SEM or SEM — AVS concentrations is useful for risk assessment of trace metals on the community level.
Original languageEnglish
Pages (from-to)668-681
JournalEnvironmental Toxicology and Chemistry
Volume23
Issue number3
DOIs
Publication statusPublished - 2004

Keywords

  • aquatic organisms
  • water pollution
  • lakes
  • floodplains
  • trace elements
  • river rhine
  • river waal
  • river ijssel
  • acid-volatile sulfide
  • simultaneously extracted metals
  • macroinvertebrate community
  • contaminated sediments
  • cadmium accumulation
  • in-situ
  • invertebrates
  • toxicity
  • avs
  • bioavailability

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