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Title
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Modeling the chemical and toxic water status of the Scheldt basin (Belgium), using aquatic invertebrate assemblages and an advanced modeling method
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Author
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Abstract
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| Self-Organizing Maps have been used on monitoring sites in several Scheldt sub-basins to identify the main aquatic invertebrate assemblages and relate them to the physico-chemical and toxic water status. 12 physico-chemical variables and 2 estimates of toxic risk were available for a dataset made up of a total of 489 records. Two of the five defining clusters reflecting a relatively clean environment were composed by very well diversified functional feeding groups and sensitive taxa. The cleanest assemblage was mainly linked to the sites from the Nete sub-basin. The three other clusters were inversely described with a dominance of oligochaetes and deposit feeders as well as a bad water quality. Such an analysis can be used to support ecological status assessment of rivers and thus might be useful for decision-makers in the evaluation of chemical and toxic water status, as required by the EU Water Framework Directive. The use of assemblage-level data in a Self-Organizing Maps algorithm to evaluate the ecological status of the Scheldt basin and to support environmental decision-making. |
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Language
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English
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Source (journal)
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Environmental pollution. - London, 1987, currens
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Publication
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London
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2010
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ISSN
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0269-7491
[print]
1873-6424
[online]
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Volume/pages
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158
:10
(2010)
, p. 3209-3218
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ISI
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000282260200028
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Full text (Publisher's DOI)
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