Response to coral reef calcification: carbonate, bicarbonate and proton flux under conditions of increasing ocean acidification

Response to coral reef calcification: carbonate, bicarbonate and proton flux under conditions of increasing ocean acidification.

Data on calcification rate of coral and crustose coralline algae were used to test the proton flux model of calcification. There was a significant correlation between calcification (G) and the ratio of dissolved inorganic carbon (DIC) to proton concentration ([DIC] : [H(+)] ratio). The ratio is tightly correlated with [CO3(2-)] and with aragonite saturation state (Ωa). An argument is presented ...

Coral reef calcifiers buffer their response to ocean acidification using both bicarbonate and carbonate.

Central to evaluating the effects of ocean acidification (OA) on coral reefs is understanding how calcification is affected by the dissolution of CO(2) in sea water, which causes declines in carbonate ion concentration [CO(3)(2-)] and increases in bicarbonate ion concentration [HCO(3)(-)]. To address this topic, we manipulated [CO(3)(2-)] and [HCO(3)(-)] to test the effects on calcification of ...

Coral Reef Ecosystems under Climate Change and Ocean Acidification

1 The Global Change Institute, The University of Queensland, St Lucia, QLD, Australia, 2 ARC Centre for Excellence in Coral Reef Studies, The University of Queensland, St Lucia, QLD, Australia, 3 School of Biological Sciences, The University of Queensland, St Lucia, QLD, Australia, 4 CSIRO Oceans and Atmosphere, Queensland Biosciences Precinct, St Lucia, QLD, Australia, 5 Coral Reef Watch, Nati...

Projecting coral reef futures under global warming and ocean acidification.

Many physiological responses in present-day coral reefs to climate change are interpreted as consistent with the imminent disappearance of modern reefs globally because of annual mass bleaching events, carbonate dissolution, and insufficient time for substantial evolutionary responses. Emerging evidence for variability in the coral calcification response to acidification, geographical variation...

Measuring coral calcification under ocean acidification: methodological considerations