Fig. 1From: Denitrification characterization of dissolved oxygen microprofiles in lake surface sediment through analyzing abundance, expression, community composition and enzymatic activities of denitrifier functional genesa Design of the sampling device used in the present study. b Dissolved oxygen profiles at different layers of sediments. AEZ aerobic zone, HYZ hypoxic zone, ANZ-1 up-anoxic zone, ANZ-2 sub-anoxic zoneBack to article page