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This classification method enables the assessment of invertebrates in rivers in relation to general degradation, including organic pollution.
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This method statement describes a system for assessing and classifying surface water bodies (rivers, lakes, transitional and coastal) based on the presence of high impact alien species.
Benthic invertebrate communities are good indicators of acidification which is caused by acidic pollution from precipitation and acids leaching from the surrounding soils. They are easily suited to biological monitoring as they are common, widespread and easily sampled. This method is based on
This method statement covers a number of physical and biological indicators that could be used individually, or in combination, to help assess whether there is major or severe impact on river ecology due to altered flows arising from water resource activities.
This classification method encompasses fish abundance, taxonomic composition and age structure.