Aquatic benthic invertebrates, of which chironomids are the largest family, are good indicators of nutrient enrichment and can be used to assess lake water quality. Passively drifting pupal skins accumulating at the lake leeward shore are easily collected.
Macrophytes provide habitats for fish and smaller animals; they bind sediments, protect banks, absorb nutrients and provide oxygenation. Macrophytes can indicate the impact of increased nutrients in lakes and are also influenced by other pressures such as water level change or acidification.
The paper sets out UKTAG’s guidance on lake reporting typology as required under Article 5 of the Directive. It identifies the methodology to be adopted in the UK as well as the preliminary results for the Great Britain (GB) ecoregion.
A technical report on proposals for a first set of standards and conditions was published for review in 2006. The revised report was issued in August 2006 in the form of a recommendation to the UK governments. The UKTAG updated the report in November 2007.
This is a technical report that presents the first set of environmental standards and conditions proposed by the UKTAG to underpin the implementation of the Directive. Our report outlines the background to our proposals and describes the role they could play.
The paper sets out UKTAG’s guidance on the framework for the identification of, and assessments of risks from, abstraction and flow regulation pressures on river, lake, transitional and coastal water bodies as required by Article 5 of the Directive.