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Influence of Macrophytes on Nitrate Removal in Wetlands
Limnology, Department of Ecology, Lund University, Lund, Sweden.ORCID iD: 0000-0002-5181-0391
Limnology, Department of Ecology, Lund University, Lund, Sweden.
Limnology, Department of Ecology, Lund University, Lund, Sweden.
Limnology, Department of Ecology, Lund University, Lund, Sweden.
1994 (English)In: Ambio, ISSN 0044-7447, Vol. 23, no 6, 363-366 p.Article in journal (Refereed) Published
Abstract [en]

Efficient nitrate removal from wetlands depends on denitrification. Macrophytes support denitrification by supplying organic carbon. Organic carbon available to denitrifying bacteria is released from plant litter and from living macrophytes. Macrophytes offer attachment surfaces for epiphytes, also producing organic matter, and for denitrifying bacteria. Emergent macrophytes are generally more productive than submerged macrophytes, but submerged macrophytes have more epiphytes and offer a larger attachment area in the water column for denitrifying bacteria. Emergent and submerged vegetation differ in their seasonal patterns of release of organic carbon. We conclude that a mixture of emergent and submerged macrophytes may be beneficial for nitrogen removal in wetlands with a surface-flow of nitrate-rich water. The influence of vegetation on wetland hydraulics must also be considered. A wetland design with deeper parts favoring submerged macrophytes alternating, along the water flow, with shallower parts covered by emergent macrophytes, may promote denitrification processes and distribution of water flow.

Place, publisher, year, edition, pages
Dordrecht: Springer Netherlands, 1994. Vol. 23, no 6, 363-366 p.
National Category
Ecology
Identifiers
URN: urn:nbn:se:hh:diva-27664ISI: A1994PN58600008Scopus ID: 2-s2.0-0028164789OAI: oai:DiVA.org:hh-27664DiVA: diva2:784965
Available from: 2015-02-01 Created: 2015-02-01 Last updated: 2016-02-24Bibliographically approved

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