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Biological diversity versus risk for mosquito nuisance and disease transmission in constructed wetlands in southern Sweden
Schäfer, M.L., Department of Population Biology, Evolutionary Biology Centre, Uppsala University, Sweden, Biol. Mosquito Contr. Nedre Dalalven, Österfärnebo, Sweden, Department of Population Biology, Evolutionary Biology Centre, Uppsala University, Norbyvägen 18D, SE-75236 Uppsala, Sweden.
Lundström, J.O., Department of Population Biology, Evolutionary Biology Centre, Uppsala University, Sweden.
Bundeswehr Institute of Microbiology, Munich, Germany.
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Ecology .
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2004 (English)In: Medical and Veterinary Entomology, ISSN 0269-283X, Vol. 18, no 3, 256-267 p.Article in journal (Refereed) Published
Abstract [en]

In southern Sweden, many wetlands have been constructed, and maintaining or increasing biological diversity is often included in the aims. Some wetlands are constructed near human settlements, thus raising the problem of wetlands being associated with mosquitoes (Diptera: Culicidae). Increased biodiversity (including mosquito diversity) is considered desirable, whereas mosquito nuisance from a human point of view is not. Adult mosquito abundance, diversity and species assemblages of constructed wetlands were compared to natural wetlands. The potential of constructed wetlands for mosquito nuisance and transmission of mosquito-borne viruses was evaluated. The study areas included five constructed and four natural wetlands. Mosquito abundance and species richness were higher in the natural than in the constructed wetlands, and showed a positive correlation with wetland size. Mosquito species assemblages formed three clusters, which were not explained by origin, size and water permanence of wetlands. In a redundancy analysis, however, mosquito faunas showed significant relationships with these variables, and size and origin of wetlands were most important. Major nuisance species (multivoltine species feeding on mammals and laying eggs on soil) were found in all wetlands, although in relatively low numbers. Risk assessment for Sindbis virus transmission showed moderate risk for two constructed wetlands near human settlements. It is concluded that small size of constructed wetlands has the advantage of low mosquito numbers from a human point of view. The use of functional groups is recommended as a tool for presenting mosquito data to the public, and for helping communication between scientists and administrative decision makers.

Place, publisher, year, edition, pages
2004. Vol. 18, no 3, 256-267 p.
Keyword [en]
Constructed wetlands, Diversity, Functional groups, Mosquito nuisance, Sweden, Virus transmission
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-45652DOI: 10.1111/j.0269-283X.2004.00504.xOAI: diva2:266548
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2011-01-12

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