Quantification of methanogenic Archaea within Baltic Sea copepod faecal pellets
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SHORT NOTE
Quantification of methanogenic Archaea within Baltic Sea copepod faecal pellets Janine Wäge1 · Oliver Schmale1 · Matthias Labrenz1 Received: 12 April 2020 / Accepted: 28 August 2020 / Published online: 29 September 2020 © The Author(s) 2020
Abstract Methane enrichments are frequently observed in the oxic upper water column of the central Baltic Sea during summer months. However, methane sources as well as the fate of methane produced in surface near waters still remain unclear. In the present study, we conducted ship-based grazing experiments to examine the presence of methanogenic archaea in copepod faecal pellets. We quantified bacterial and archaeal 16S rRNA and the mcrA gene and transcripts within copepod faecal pellets by using droplet digital polymerase chain reaction. We showed that the pellets (
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