ABSTRACT
The soda lakes waters of Nhecolândia, a subregion of the Pantanal wetlands in Brazil, are characterized by high dissolved arsenic (As) concentrations (up to ~3 mg/L) and extreme pH conditions (pH> 8.5), resulting from an evapo-concentration process. Albeit these conditions, abundant planktonic community develops in these lakes that tolerate or metabolize As. Nevertheless, As bioaccumulation had never been studied in these lakes. In this study carried out in six alkaline lakes over the two very contrasting and 2018 dry periods from 2017 and 2018, we show that bioaccumulation factors in phytoplankton are low.
