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Effect of water quality on waterbugs (Hemiptera: Gerromorpha & Nepomorpha) in Flanders (Belgium): results from a large-scale field survey

Published online by Cambridge University Press:  18 June 2013

Koen Lock ,
Tim Adriaens ,
Frank Van De Meutter  and
Peter Goethals
Koen Lock*
Affiliation:
eCOAST Marine Research, Esplanadestraat 1, 8400 Oostende, Belgium
Tim Adriaens
Affiliation:
Research Institute for Nature and Forest, Kliniekstraat 25, 1070 Brussels, Belgium
Frank Van De Meutter
Affiliation:
Research Institute for Nature and Forest, Kliniekstraat 25, 1070 Brussels, Belgium
Peter Goethals
Affiliation:
Laboratory of Environmental Toxicology and Aquatic Ecology, Ghent University, J. Plateaustraat 22, 9000 Ghent, Belgium
*
*Corresponding author: Koen_Lock@hotmail.com
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Abstract

Macroinvertebrates have been collected in Flanders since 1989 by the Flemish Environment Agency to assess ecological water quality. During the present study, the collected waterbugs were identified to species level. In total, more than 90 000 waterbugs were identified, belonging to 45 species. Two of these are recent additions to Flemish fauna: Sigara iactans was found to be a common species in 1989, the first year of monitoring, which is earlier than the first records reported so far, whereas Cymatia rogenhoferi remains a very rare species. Five different communities could be recognized: (1) species occurring in alkaline waters with a high pH, (2) species occurring in colder waters that can tolerate slightly brackish and nutrient rich water, (3) species from running waters, (4) species from acidic waters and (5) ubiquist species that occurred in all types of water. Owing to the general improvement of chemical water quality during the last decade, most species increased, however, three pollution tolerant species declined significantly: Callicorixa praeusta, Corixa punctata and Sigara striata.

Keywords

ecological water qualityFlandersgeographical distributionmonitoringwaterbugs
Type
Research Article
Information
Annales de Limnologie - International Journal of Limnology , Volume 49 , Issue 2 , 2013 , pp. 121 - 128
Copyright
© EDP Sciences, 2013

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