Comment on "The complex effects of ocean acidification on the prominent N<sub>2</sub>-fixing cyanobacterium <i>Trichodesmium</i>".

Hutchins, David A; Fu, Feixue; Walworth, Nathan G; Lee, Michael D; Saito, Mak A; Webb, Eric A · Science · 2017

editorial · Level V

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Abstract

Hong <i>et al</i> (Reports, 5 May 2017, p. 527) suggested that previous studies of the biogeochemically significant marine cyanobacterium <i>Trichodesmium</i> showing increased growth and nitrogen fixation at projected future high CO<sub>2</sub> levels suffered from ammonia or copper toxicity. They reported that these rates instead decrease at high CO<sub>2</sub> when contamination is alleviated. We present and discuss results of multiple published studies refuting this toxicity hypothesis.

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