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Wetland management to reduce Baltic Sea eutrophication
Fyn County, Department of Environmental Protection, Odense SØ, Denmark.
The State Committee for Environ. Protection, Kaliningrad, Russia .
Land for Nature and Environ. in Schleswig-Holstein, Flintbek, Germany .
County Adm. Board, Halmstad, Sweden .
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2002 (English)In: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 45, no 9, p. 87-94Article in journal (Refereed) Published
Abstract [en]

Seven regions with coastal eutrophication problems in the Baltic Sea, including the Kattegat, constitute the BERNET project (Baltic Eutrophication Regional Network). To counteract eutrophication and associated severe biological conditions the countries around this large brackish water body must all cooperate. The regions are characterized by large differences in land use, e.g. agricultural intensity, and losses of retention capacity in the catchments due to wetland reclamation. Initially it has been necessary to identify nutrient sources - especially nitrogen - and technical, economical and even administrative obstacles to initiate eutrophication management measures. Nitrogen retention in different types of wetlands in the Baltic Sea Region has been analysed. The wetlands generally have a positive effect on reduced nitrogen transport to aquatic environments and it is generally accepted that measures leading to decreased losses of nutrients to the aquatic environment must be combined with measures leading to increased retention of nutrients in catchments. Data analysed in the BERNET project show that the potential for such a measure is large. Therefore, conservation and restoration initiatives for wetlands is an essential part of the work in the BERNET project. Wetlands have been drained or totally eliminated due to intensive agriculture in some regions while large scale rehabilitation of wetlands occurs in regions with less intensive agriculture. Based on land use data from the seven regions, the working group for wetland management within the BERNET project has identified the possible use of wetlands as building blocks as a contribution to the management of the Baltic Sea eutrophication. Several recommendations are presented on the wise use of existing and constructed wetlands for water quality management in relation to non-point nutrient pollution.

Place, publisher, year, edition, pages
London: IWA Publishing , 2002. Vol. 45, no 9, p. 87-94
Keywords [en]
Wetland management, Baltic Sea, Eutrophication, Retention capacity, Catchments, Data reduction, Land reclamation, Land use, Nitrogen, Water quality
National Category
Other Environmental Engineering
Identifiers
URN: urn:nbn:se:hh:diva-313ISI: 000176222600011PubMedID: 12079128Scopus ID: 2-s2.0-18444375864Local ID: 2082/615OAI: oai:DiVA.org:hh-313DiVA, id: diva2:237492
Available from: 2006-12-13 Created: 2006-12-13 Last updated: 2018-03-23Bibliographically approved

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Fleischer, Siegfried

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