Scripps Institution of Oceanography

High pCO2, low pH groundwater discharge drives natural acidification of reefs Christina M. Richardson, Henrietta Dulai, Brian Popp, and Kathleen Ruttenberg Abstract Diel changes in the marine carbonate chemistry of reefs are thought to be primarily biologically-driven. The presence of groundwater discharge in nearshore reefs may complicate our understanding of carbon cycling in these systems, however. Here we show that coastal groundwater inputs shift and heighten biologically-induced changes in