FN Archimer Export Format
PT J
TI Chemical characterization of the Punta de Fuencaliente CO2-enriched system (La Palma, NE Atlantic Ocean): a new natural laboratory for ocean acidification studies
BT 
AF GONZALEZ-DELGADO, Sara
   GONZALEZ-SANTANA, David
   SANTANA-CASIANO, Magdalena
   GONZALEZ-DAVILA, Melchor
   HERNANDEZ, Celso A.
   SANGIL, Carlos
   CARLOS HERNANDEZ, Jose
AS 1:1;2:2,3;3:2;4:2;5:1;6:1;7:1;
FF 1:;2:;3:;4:;5:;6:;7:;
C1 Univ La Laguna, Fac Ciencias, Dept Biologfa Anim Edafol & Geol, Canary Isl, Spain.
   Univ Las Palmas Gran Canaria, IOCAG ULPGC, Inst Oceanog & Cambio Global, Canary Isl, Spain.
   Univ Brest, LEMAR, CNRS, IRD,Ifremer, F-29280 Plouzane, France.
C2 UNIV LA LAGUNA, SPAIN
   UNIV LAS PALMAS GRAN CANARIA, SPAIN
   UBO, FRANCE
UM LEMAR
IN WOS Cotutelle UMR
   DOAJ
   copubli-europe
IF 5.092
TC 5
UR https://archimer.ifremer.fr/doc/00684/79576/82245.pdf
   https://archimer.ifremer.fr/doc/00684/79576/82246.zip
   https://archimer.ifremer.fr/doc/00684/79576/82247.pdf
   https://archimer.ifremer.fr/doc/00684/79576/82248.zip
LA English
DT Article
AB We present a new natural carbon dioxide (CO2) system located off the southern coast of the island of La Palma (Canary Islands, Spain). Like CO2 seeps, these CO2 submarine groundwater discharges (SGDs) can be used as an analogue to study the effects of ocean acidification (OA) on the marine realm. With this aim, we present the chemical characterization of the area, describing the carbon system dynamics, by measuring pH, AT and CT and calculating Ω aragonite and calcite. Our explorations of the area have found several emission points with similar chemical features. Here, the CT varies from 2120.10 to 10 784.84 µmol kg−1, AT from 2415.20 to 10 817.12 µmol kg−1, pH from 7.12 to 8.07, Ω aragonite from 0.71 to 4.15 and Ω calcite from 1.09 to 6.49 units. Also, the CO2 emission flux varies between 2.8 and 28 kg CO2 d−1, becoming a significant source of carbon. These CO2 emissions, which are of volcanic origin, acidify the brackish groundwater that is discharged to the coast and alter the local seawater chemistry. Although this kind of acidified system is not a perfect image of future oceans, this area of La Palma is an exceptional spot to perform studies aimed at understanding the effect of different levels of OA on the functioning of marine ecosystems. These studies can then be used to comprehend how life has persisted through past eras, with higher atmospheric CO2, or to predict the consequences of present fossil fuel usage on the marine ecosystem of the future oceans. 
PY 2021
PD MAR
SO Biogeosciences
SN 1726-4170
PU Copernicus GmbH
VL 18
IS 5
UT 000627598800002
BP 1673
EP 1687
DI 10.5194/bg-18-1673-2021
ID 79576
ER

EF