Dystrophic lake
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Dystrophic lakes, also known as humic lakes, are lakes that contain high amounts of humic substances and organic acids. The presence of these substances causes the water to be brown in colour and have
Dystrophic lake in Bielawa nature reserve in Poland
Lake Matheson, a dystrophic lake in New Zealand, has water stained so dark by tannins that its reflection of the nearby Southern Alps has made it a tourist attraction.
Humic substance
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Humic substances are relatively recalcitrant colored organic compounds naturally formed during long-term decomposition and transformation of biomass residues. The color of humic substances varies from
Dystrophic lake
…Dystrophic lakes, also known as humic lakes, are lakes that contain high amounts of humic substances and organic acids. The presence of these substances causes the water to be brown in colour and have a generally low pH of around 4.0-6.0. The presence…
Humic acid isolated from peat
Fulvic acid isolated from peat