The effect of emergent macrophytes on the dynamics of sulfur species and trace metals in wetland sediments

Jung Hyun Choi, Seok Soon Park, Peter R. Jaffé

Research output: Contribution to journalArticlepeer-review

48 Scopus citations


This study focuses on the effect of plants on the biogeochemistry of sulfur species and the mobility of heavy metals in wetland sediments. Results showed that, in the presence of plants, sediments had elevated sulfate concentrations in the rhizosphere during the growing season, ranging from 0.2 to 6.20 mmol L-1, whereas only a small difference in the sulfate profiles between vegetated and non-vegetated sediments was observed during senescence. Based on the sulfate concentration increase, the oxygen release rate from the roots to achieve the corresponding oxidation of sulfide was estimated as 0.85 g m -2 day-1. Evapotranspiration-induced advection is a major contributor to the transport of sulfate from the water column into the sediments, and also allows dissolved trace metals (i.e. Cd, Pb, and Zn) to be transported into the sediments and react with the acid volatile sulfide pool, resulting in the immobilization of trace metals in these sediments.

Original languageEnglish
Pages (from-to)286-293
Number of pages8
JournalEnvironmental Pollution
Issue number2
StatePublished - Mar 2006

Bibliographical note

Funding Information:
This research was supported by an International Research Collaboration Grant (KRF-2000-042-E00088) from Korea Research Foundation. Additional support was provided by U.S. EPA – Science to Achieve Results (STAR) Program, Grant # R827288.


  • Plants
  • Sulfate
  • Sulfide
  • Trace metals
  • Wetland sediments


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