Coastal acidification in the Great Barrier Reef

In open oceans, changes in the carbonate chemistry from rising atmospheric CO2 are relatively stable, and well understood. In contrast, conditions are more variable in nearshore and shallow marine environments such as the Great Barrier Reef. For example, dense seagrass meadows or algal mats found in coastal waters deplete the CO2 in the water during the day due to the plants’ photosynthesis, but enrich it at night due to respiration.