Contrasting effects of acidification and warming on dimethylsulfide concentrations during a temperate estuarine fall bloom mesocosm experiment

Bénard, Robin; Levasseur, Maurice; Scarratt, Michael; Michaud, Sonia; Starr, Michel; Mucci, Alfonso; Ferreyra, Gustavo; Gosselin, Michel; Tremblay, Jean-Éric; Lizotte, Martine; Yang, Gui-Peng

doi:https://doi.org/10.5194/bg-16-1167-2019

Articles | Volume 16, issue 6

https://doi.org/10.5194/bg-16-1167-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-16-1167-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 16, issue 6

Research article

|

21 Mar 2019

Research article |

| 21 Mar 2019

Contrasting effects of acidification and warming on dimethylsulfide concentrations during a temperate estuarine fall bloom mesocosm experiment

Robin Bénard, Maurice Levasseur, Michael Scarratt, Sonia Michaud, Michel Starr, Alfonso Mucci, Gustavo Ferreyra, Michel Gosselin, Jean-Éric Tremblay, Martine Lizotte, and Gui-Peng Yang

Data sets

Experimental assessment of the St. Lawrence Estuary phytoplankton fall bloom sensitivity and DMS concentrations to acidification and warming R. Bénard, M. Levasseur, M. Scarratt, M.-A. Blais, A. Mucci, G. A. Ferreyra, M. Starr, M. Gosselin, J.-É. Tremblay, M. Lizotte, S. Michaud, and G. Yang https://doi.org/10.1594/PANGAEA.886887

Short summary

We present rare data on the combined effects of acidification and warming on dimethylsulfide (DMS) during a mesocosm experiment. Our results show a reduction of DMS under elevated pCO2, but warming the mesocosms by 5 °C translated into a positive offset in concentrations of DMS over the whole range of pCO2 tested. Our results suggest that warming could mitigate the expected reduction in DMS production due to OA, even increasing the net DMS production, with possible repercussions for the climate.