Fig. 2 Change in dissolved Fe as a function of (a) flooding time and (b) aeration time, as well as dissolved Mn as a function of (c) flooding time and (d) aeration time. Error bars denote one standard deviation. Santa, no P—{circ}; Santa, with P—{square}; Palouse, no P—{triangleup}; Palouse, with P—{triangledown}