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|Title:||Defining Chlorophyll-a Reference Conditions in European Lakes|
|Authors:||POIKANE Sandra; ALVES Maria Helena; ARGILLIER Christine; BERG Van Den Marcel; BUZZI Fabio; HOEHN Eberhard; DE HOYOS Caridad; KAROTTKI Ivan; LAPLACE-TREYTURE Cristophe; LYCHE SOLHEIM Anne; PADUA J.; Ortiz-Casas José; SERRANO M. L.; OTT I.; PHILLIPS G; PILKE A.; REMEC-REKAR S.; RIEDMULLER U.|
|Citation:||ENVIRONMENTAL MANAGEMENT vol. 45 no. 6 p. 1286-1298|
|Type:||Articles in Journals|
|Abstract:||The concept of ¿reference conditions¿ describes the benchmark against which current conditions are compared when assessing the status of water bodies. In this paper we focus on the establishment of reference conditions for European lakes according to a phytoplankton biomass indicator - the concentration of chlorophyll-a. A mostly spatial approach (selection of existing lakes with no or minor human impact) was used to set the reference conditions for chlorophyll-a values, supplemented by historical data, paleolimnological investigations and modelling. The work resulted in definition of reference conditions and the boundary between ¿high¿ and ¿good¿ status for 15 main lake types and five ecoregions of Europe: Alpine, Atlantic, Central/Baltic, Mediterranean, and Northern. Additionally, empirical models were developed for estimating site-specific reference chlorophyll-a concentrations from a set of potential predictor variables. The results were recently formulated into the EU legislation, marking the first attempt in international water policy to move from chemical quality standards to ecological quality targets.|
|JRC Institute:||Institute for Environment and Sustainability|
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