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Water column profiles. CTD casts for temperatures (°C), oxygen concentrations (μM), chlorophyll a (μg × L-1), and light transmission [%] measured in the water column of Lake Towuti at each of the three sites. Results show that Lake Towuti is weakly thermally stratified with an oxycline occurring in between 90 and 130 m depth. Chlorophyll a peaks up at 50 m depth, while the presence of suspended particles can be inferred from the transmission decrease at 130 m depth.
