Anthropogenic forcing of estuarine hypoxic events in sub-tropical catchments: Landscape drivers and biogeochemical processes

► We present a conceptual model linking key landscape drivers and biogeochemical processes in post-flood hypoxic events. ► Modification of surface hydrology via extensive drainage networks emerges as a major contributing factor to hypoxic events. ► Management practices can reduce the impacts of post-flood hypoxia, and include: ► i) remodifying drainage on the floodplain to promote wetter conditions. ► ii) strategic retention of floodwaters in backswamp wetlands to reduce discharge during the post-flood recession phase.