The highest percentage of ultra-oligotrophic stations in lakes was found in Latvia, followed by Spain, while the highest percentage of eutrophic or hypertrophic stations were found in the Netherlands, followed by Denmark, Slovakia, Poland, Bulgaria, and Belgium[26].
Het hoogste percentage ultraoligotrofe stations bij meren werd aangetroffen in Letland, gevolgd door Spanje, terwijl het hoogste percentage eutrofe of hypertrofe stations werd aangetroffen in Nederland, gevolgd door Denemarken, Slowakije, Polen, Bulgarije, en België[26].