The combination of thermal stress and ocean acidification (OA) can more negatively affect coral calcification than
an individual stressors, but the mechanism behind this interaction is unknown. We used two independent methods
(microelectrode and boron geochemistry) to measure calcifying fluid pH (pH cf) and carbonate chemistry of the
corals Pocillopora damicornis and Stylophora pistillata grown under various temperature and pCO 2 conditions.
Although these approaches demonstrate that they record pH cf over different time scales, they reveal that both species can cope with OA under optimal temperatures (28°C) by elevating pH cf and aragonite saturation state (cf) in support of calcification. At 31°C, neither species elevated these parameters as they did at 28°C and, likewise, could not maintain substantially positive calcification rates under any pH treatment. These results reveal a previously uncharacterized influence of temperature on coral pHcf regulation—the apparent mechanism behind the negative interaction between thermal stress and OA on coral calcification
Guillermic M., Cameron L.P., Corte I.D., Misra S., Bijma J., de Beer D., Reymond C., Westphal H., Ries J.B. and Eagle R.A. (2021) Thermal stress reduces pocilloporid coral resilience to ocean acidification by impairing control over calcifying fluid chemistry. Science Advances 7(2). 10.1126/sciadv.aba9958
@article{Guillermic2021,
Title = {Thermal stress reduces pocilloporid coral resilience to ocean acidification by impairing control over calcifying fluid chemistry},
Author = {Guillermic, Maxence and Cameron, Louise P. and Corte, Ilian De and Misra, Sambuddha and Bijma, Jelle and de Beer, Dirk and Reymond, Claire and Westphal, Hildegard and Ries, Justin B. and Eagle, Robert A.},
Editor = {},
Journal = {Science Advances},
Year = {2021},
Volume = {7},
Doi = {10.1126/sciadv.aba9958},
Abstract = {The combination of thermal stress and ocean acidification (OA) can more negatively affect coral calcification than
an individual stressors, but the mechanism behind this interaction is unknown. We used two independent methods
(microelectrode and boron geochemistry) to measure calcifying fluid pH (pH cf) and carbonate chemistry of the
corals Pocillopora damicornis and Stylophora pistillata grown under various temperature and pCO 2 conditions.
Although these approaches demonstrate that they record pH cf over different time scales, they reveal that both species can cope with OA under optimal temperatures (28°C) by elevating pH cf and aragonite saturation state (cf) in support of calcification. At 31°C, neither species elevated these parameters as they did at 28°C and, likewise, could not maintain substantially positive calcification rates under any pH treatment. These results reveal a previously uncharacterized influence of temperature on coral pHcf regulation—the apparent mechanism behind the negative interaction between thermal stress and OA on coral calcification},
}
TY - JOUR
AU - Guillermic, Maxence
AU - Cameron, Louise P.
AU - Corte, Ilian De
AU - Misra, Sambuddha
AU - Bijma, Jelle
AU - de Beer, Dirk
AU - Reymond, Claire
AU - Westphal, Hildegard
AU - Ries, Justin B.
AU - Eagle, Robert A.
TI - Thermal stress reduces pocilloporid coral resilience to ocean acidification by impairing control over calcifying fluid chemistry
T2 - Science Advances
PY - 2021
VL - 7
DO - 10.1126/sciadv.aba9958
AB - The combination of thermal stress and ocean acidification (OA) can more negatively affect coral calcification than
an individual stressors, but the mechanism behind this interaction is unknown. We used two independent methods
(microelectrode and boron geochemistry) to measure calcifying fluid pH (pH cf) and carbonate chemistry of the
corals Pocillopora damicornis and Stylophora pistillata grown under various temperature and pCO 2 conditions.
Although these approaches demonstrate that they record pH cf over different time scales, they reveal that both species can cope with OA under optimal temperatures (28°C) by elevating pH cf and aragonite saturation state (cf) in support of calcification. At 31°C, neither species elevated these parameters as they did at 28°C and, likewise, could not maintain substantially positive calcification rates under any pH treatment. These results reveal a previously uncharacterized influence of temperature on coral pHcf regulation—the apparent mechanism behind the negative interaction between thermal stress and OA on coral calcification
ER -
