Fig. 2
From: Methane stimulates massive nitrogen loss from freshwater reservoirs in India

Water characteristics and denitrification rate in Tillari Reservoir. Depthwise variations in concentrations of dissolved oxygen, nitrate (+nitrite), ammonium and methane on 31.05.2011 (a), and 03.06.2011 (c). Total denitrification rate measured by isotope pairing experiments (black bars – with methane; red bars—without methane) on 31.05.2011 (b), and 03.06.2011 (d)