Ocean acidification increases the accumulation of toxic phenolic compounds across trophic levels

Peng Jin, Tifeng Wang, Nana Liu, Sam Dupont, John Beardall, Philip W. Boyd, Ulf Riebesell and Kunshan Gao ()
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Peng Jin: State Key Laboratory of Marine Environmental Science, Xiamen University
Tifeng Wang: State Key Laboratory of Marine Environmental Science, Xiamen University
Nana Liu: State Key Laboratory of Marine Environmental Science, Xiamen University
Sam Dupont: University of Gothenburg
John Beardall: School of Biological Sciences, Monash University
Philip W. Boyd: Institute for Marine and Antarctic Studies and Antarctic Climate & Ecosystems Cooperative Research Centre, University of Tasmania
Ulf Riebesell: GEOMAR Helmholtz Centre for Ocean Research Kiel
Kunshan Gao: State Key Laboratory of Marine Environmental Science, Xiamen University

Nature Communications, 2015, vol. 6, issue 1, 1-6

Abstract: Abstract Increasing atmospheric CO2 concentrations are causing ocean acidification (OA), altering carbonate chemistry with consequences for marine organisms. Here we show that OA increases by 46–212% the production of phenolic compounds in phytoplankton grown under the elevated CO2 concentrations projected for the end of this century, compared with the ambient CO2 level. At the same time, mitochondrial respiration rate is enhanced under elevated CO2 concentrations by 130–160% in a single species or mixed phytoplankton assemblage. When fed with phytoplankton cells grown under OA, zooplankton assemblages have significantly higher phenolic compound content, by about 28–48%. The functional consequences of the increased accumulation of toxic phenolic compounds in primary and secondary producers have the potential to have profound consequences for marine ecosystem and seafood quality, with the possibility that fishery industries could be influenced as a result of progressive ocean changes.

Date: 2015
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DOI: 10.1038/ncomms9714

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