Articles | Volume 13, issue 16
https://doi.org/10.5194/bg-13-4707-2016
https://doi.org/10.5194/bg-13-4707-2016
Research article
 | 
22 Aug 2016
Research article |  | 22 Aug 2016

Ocean acidification decreases plankton respiration: evidence from a mesocosm experiment

Kristian Spilling, Allanah J. Paul, Niklas Virkkala, Tom Hastings, Silke Lischka, Annegret Stuhr, Rafael Bermúdez, Jan Czerny, Tim Boxhammer, Kai G. Schulz, Andrea Ludwig, and Ulf Riebesell

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Short summary
Anthropogenic carbon dioxide (CO2) emissions are reducing the pH in the world's oceans. We determined the plankton community composition and measured primary production, respiration rates and carbon export during an ocean acidification experiment. Our results suggest that increased CO2 reduced respiration and increased net carbon fixation at high CO2. This did not, however, translate into higher carbon export, and consequently did not work as a negative feedback mechanism for decreasing pH.
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