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Regular monitoring of lakes is important to determine their ecological state and development and of key significance when deciding whether action should be taken to improve their quality, for instance by reducing the external loading of nutrients. Imprecise or inadequate knowledge of the ecological state increases the risk of misclassification and of wrong management decisions. Based on Danish lake...
Phytoplankton is one of the four key biological quality elements to be used in the ecological classification of lakes in Europe according to the Water Framework Directive (WFD). Chlorophyll a (Chla) has so far been used as the main – and sometimes only – metric to define class boundaries. Chla is often a key metric for lake managers and is used to determine whether and how much action should be taken...
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