Submarine groundwater discharge (SGD) flows into coral reefs. In volcanically active areas, the incoming groundwater is typically CO2-rich which can alter the carbon balance and views on how coral reefs function at prevailing high CO2. We quantified dynamic hydrothermal SGD and CO2 fluxes to a Philippine coral reef over a spring-neap tidal cycle. SGD rates, with mean of 35 cm d–1 and 5–95% range of 0–147.8 cm d–1. The groundwater-CO2 fluxes (266 mmol m2 d–1; range: 0–1111 mmol m2 d–1) were up to ∼300-fold larger than evasion of CO2 to the atmosphere. The reef seawater pCO2 (493 μatm; range: 421–680 μatm) remained above atmospheric values and spanned the upper end of the range of atmospheric levels (400–500 μatm) expected for the next century. Because of the hydrothermal SGD, the reef has prevailing above-atmospheric CO2 and is a source to the atmosphere and nearby waters.
Correa R.E., Cardenas M.B., Rodolfo R.S., Lapus M.R., Davis K.L., Giles A.B., Fullon J.C., Hajati M.-C., Moosdorf N., Sanders C.J. and Santos I.R. (2021) Submarine Groundwater Discharge Releases CO2 to a Coral Reef. ACS ES&T Water 1(8): 1756-1764. 10.1021/acsestwater.1c00104
@article{Correa2021,
Title = {Submarine Groundwater Discharge Releases CO2 to a Coral Reef},
Author = {Correa, Rogger E. and Cardenas, M. Bayani and Rodolfo, Raymond S. and Lapus, Mark R. and Davis, Kay L. and Giles, Anna B. and Fullon, Jose C. and Hajati, Mithra-Christin and Moosdorf, Nils and Sanders, Christian J. and Santos, Isaac R.},
Editor = {},
Journal = {ACS ES&T Water},
Year = {2021},
Pages = {1756-1764},
Volume = {1},
Doi = {10.1021/acsestwater.1c00104},
Abstract = {Submarine groundwater discharge (SGD) flows into coral reefs. In volcanically active areas, the incoming groundwater is typically CO2-rich which can alter the carbon balance and views on how coral reefs function at prevailing high CO2. We quantified dynamic hydrothermal SGD and CO2 fluxes to a Philippine coral reef over a spring-neap tidal cycle. SGD rates, with mean of 35 cm d–1 and 5–95% range of 0–147.8 cm d–1. The groundwater-CO2 fluxes (266 mmol m2 d–1; range: 0–1111 mmol m2 d–1) were up to ∼300-fold larger than evasion of CO2 to the atmosphere. The reef seawater pCO2 (493 μatm; range: 421–680 μatm) remained above atmospheric values and spanned the upper end of the range of atmospheric levels (400–500 μatm) expected for the next century. Because of the hydrothermal SGD, the reef has prevailing above-atmospheric CO2 and is a source to the atmosphere and nearby waters.},
}
TY - JOUR
AU - Correa, Rogger E.
AU - Cardenas, M. Bayani
AU - Rodolfo, Raymond S.
AU - Lapus, Mark R.
AU - Davis, Kay L.
AU - Giles, Anna B.
AU - Fullon, Jose C.
AU - Hajati, Mithra-Christin
AU - Moosdorf, Nils
AU - Sanders, Christian J.
AU - Santos, Isaac R.
TI - Submarine Groundwater Discharge Releases CO2 to a Coral Reef
T2 - ACS ES&T Water
PY - 2021
SP - 1756-1764
VL - 1
DO - 10.1021/acsestwater.1c00104
AB - Submarine groundwater discharge (SGD) flows into coral reefs. In volcanically active areas, the incoming groundwater is typically CO2-rich which can alter the carbon balance and views on how coral reefs function at prevailing high CO2. We quantified dynamic hydrothermal SGD and CO2 fluxes to a Philippine coral reef over a spring-neap tidal cycle. SGD rates, with mean of 35 cm d–1 and 5–95% range of 0–147.8 cm d–1. The groundwater-CO2 fluxes (266 mmol m2 d–1; range: 0–1111 mmol m2 d–1) were up to ∼300-fold larger than evasion of CO2 to the atmosphere. The reef seawater pCO2 (493 μatm; range: 421–680 μatm) remained above atmospheric values and spanned the upper end of the range of atmospheric levels (400–500 μatm) expected for the next century. Because of the hydrothermal SGD, the reef has prevailing above-atmospheric CO2 and is a source to the atmosphere and nearby waters.
ER -
