Articles | Volume 16, issue 20
https://doi.org/10.5194/bg-16-4129-2019
https://doi.org/10.5194/bg-16-4129-2019
Research article
 | 
28 Oct 2019
Research article |  | 28 Oct 2019

Methane production by three widespread marine phytoplankton species: release rates, precursor compounds, and potential relevance for the environment

Thomas Klintzsch, Gerald Langer, Gernot Nehrke, Anna Wieland, Katharina Lenhart, and Frank Keppler

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Cited articles

Abdulmajeed, A. M. and Qaderi, M. M.: Intrashoot variation in aerobic methane emissions from pea plants exposed to multiple abiotic stresses, Acta Physiol. Plant., 39, 124, https://doi.org/10.1007/s11738-017-2420-y, 2017. 
Althoff, F., Benzing, K., Comba, P., McRoberts, C., Boyd, D. R., Greiner, S., and Keppler, F.: Abiotic methanogenesis from organosulphur compounds under ambient conditions, Nat. Commun., 5, 4205, https://doi.org/10.1038/ncomms5205, 2014. 
Angel, R., Matthies, D., and Conrad, R.: Activation of Methanogenesis in Arid Biological Soil Crusts Despite the Presence of Oxygen, Plos One, 6, e20453, https://doi.org/10.1371/journal.pone.0020453, 2011. 
Bange, H. W. and Uher, G.: Photochemical production of methane in natural waters: implications for its present and past oceanic source, Chemosphere, 58, 177–183, https://doi.org/10.1016/j.chemosphere.2004.06.022, 2005. 
Bange, H. W., Bartell, U., Rapsomanikis, S., and Andreae, M. O.: Methane in the Baltic and North Seas and a reassessment of the marine emissions of methane, Global Biogeochem. Cy., 8, 465–480, 1994. 
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Marine algae might contribute to the observed methane oversaturation in oxic waters, but so far direct evidence for methane production by marine algae is limited. We investigated three widespread haptophytes for methane formation. Our results provide unambiguous evidence that all investigated marine algae produce methane per se and at substantial rates. We conclude that each of the three algae studied here could substantially account for the methane production observed in field studies.
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