Figure 1. Interacting effects of Azolla, rain and wind on salinity stratification. A.

) Salinity (mg L⁻¹ ± standard error) in the top water layers (solid lines) and in the bottom water layers (dotted lines) of the beakers in the absence of Azolla (rounds), in the presence of Azolla (squares), with no influence of wind (closed figures) or with influence of wind (open figures) hours after the rain event. B) Salinity (mg L⁻¹) profiles in the beakers 20 hours after the rain event.