Enzyme activities in constructed wetlands: Implication for water quality amelioration

Hojeong Kang, Chris Freeman, Dowon Lee, William J. Mitsch

Research output: Contribution to journalArticle

67 Citations (Scopus)

Abstract

Wetlands have been widely applied for water quality amelioration. Enzymatic analysis was applied in a study of decomposition in constructed wetlands. We hypothesise that soil enzyme activities would be lower in wetland sediment than adjacent upland and that the lower soil enzyme activities are partly responsible for the water quality amelioration. Four soil enzyme activities (β-glucosidase, β-N-acetylglucosaminidase, phosphatase, and arylsulfatase) and microbial activity (electron transport system activity) were measured across a transect from a upland soil to a wetland sediment in two constructed wetland sites in the USA. Along with the activities, hydrochemistry was determined in inflow and outflow of the wetlands. In both wetlands, the enzyme activities in the sediments were significantly lower than the adjacent upland soils. For hydrochemistry, significant decreases were observed in phosphate and nitrate concentrations in outflow water compared to inflow water. However, there were no significant changes in other anions (F-, Cl-, SO42-). For dissolved organic carbon, it seems that the wetlands would be a source rather than a sink. The results suggest that the enzymatic approach represents a valuable method to assess decomposition processes in wetland sediments, and that characteristically low enzyme activities in the sediments may be important in the water quality amelioration function.

Original languageEnglish
Pages (from-to)231-235
Number of pages5
JournalHydrobiologia
Volume368
Issue number1-3
Publication statusPublished - 1998 Dec 1

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constructed wetlands
constructed wetland
enzyme activity
remediation
wetlands
water quality
wetland
soil enzymes
sediments
upland soils
hydrochemistry
sediment
soil
inflow
outflow
decomposition
arylsulfatase
degradation
dissolved organic carbon
phosphatase

All Science Journal Classification (ASJC) codes

  • Aquatic Science

Cite this

Kang, H., Freeman, C., Lee, D., & Mitsch, W. J. (1998). Enzyme activities in constructed wetlands: Implication for water quality amelioration. Hydrobiologia, 368(1-3), 231-235.
Kang, Hojeong ; Freeman, Chris ; Lee, Dowon ; Mitsch, William J. / Enzyme activities in constructed wetlands : Implication for water quality amelioration. In: Hydrobiologia. 1998 ; Vol. 368, No. 1-3. pp. 231-235.
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Kang, H, Freeman, C, Lee, D & Mitsch, WJ 1998, 'Enzyme activities in constructed wetlands: Implication for water quality amelioration', Hydrobiologia, vol. 368, no. 1-3, pp. 231-235.

Enzyme activities in constructed wetlands : Implication for water quality amelioration. / Kang, Hojeong; Freeman, Chris; Lee, Dowon; Mitsch, William J.

In: Hydrobiologia, Vol. 368, No. 1-3, 01.12.1998, p. 231-235.

Research output: Contribution to journalArticle

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