Articles | Volume 14, issue 6
https://doi.org/10.5194/bg-14-1631-2017
https://doi.org/10.5194/bg-14-1631-2017
Research article
 | 
29 Mar 2017
Research article |  | 29 Mar 2017

Effects of low oxygen concentrations on aerobic methane oxidation in seasonally hypoxic coastal waters

Lea Steinle, Johanna Maltby, Tina Treude, Annette Kock, Hermann W. Bange, Nadine Engbersen, Jakob Zopfi, Moritz F. Lehmann, and Helge Niemann

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Cited articles

Abril, G. and Iversen, N.: Methane dynamics in a shallow non-tidal estuary (Randers Fjord, Denmark), March Ecol.-Prog. Ser., 230, 171–181, 2002.
Baez, A. and Shiloach, J.: Effect of elevated oxygen concentration on bacteria, yeasts, and cells propagated for production of biological compounds, Microb. Cell Fact., 13, p. 181, 2014.
Bakker, D. C., Bange, H. W., Gruber, N., Johannessen, T., Upstill-Goddard, R. C., Borges, A. V., Delille, B., Löscher, C. R., Naqvi, S. W. A., Omar, A. M., and Santana-Casiano, J. M.: Air–sea interactions of natural long-lived greenhouse gases (CO2, N2O, CH4) in a changing climate, in: Ocean-Atmosphere Interactions of Gases and Particles, edited by: Liss, P. S. and Johnson, M. T., Springer Verlag, 113–169, 2014.
Bange, H. W: Nitrous oxide and methane in European coastal waters, Estuar. Coast. Shelf S., 70, 361–374, 2006.
Bange, H. W., Bartell, U. H., 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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Short summary
Large amounts of methane are produced in anoxic, coastal sediments, from which it can seep into the overlying water column. Aerobic oxidation of methane (MOx) mediated by methanotrophic bacteria is an important sink for methane before its evasion to the atmosphere. In a 2-year seasonal study, we investigated the spatio-temporal variability of MOx in a seasonally hypoxic coastal inlet using radiotracer-based methods. In experiments, we assessed the effect of variable oxygen concentrations on MOx.
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