Data description

Trend lakes – long time series on water chemistry and biology

Last changed: 18 August 2023

The overall objectives of the monitoring programme Trend lakes are to describe conditions and large-scale changes in the water environment and to provide a basis for evaluating hazard images and potential measures, in a nationally representative selection of watercourses that are not impacted by local/regional effluent discharge or intensive soil usage. Water chemistry and biology (fish, benthic fauna, zooplankton, phytoplankton, macrophytes) are studied in 106 lakes.

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