Active metal-cycling microbial communities of polymetallic nodules from the Eastern Pacific Ocean


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julia.otte [ at ] awi.de

Abstract

The rising demand for minerals and metals is encouraging the great international interest for alternative sources in the deep sea. Deposits of deep-sea polymetallic nodules attracted the attention for a long time because they are rich in nickel, copper, cobalt, and rare earth elements. The environmental consequences of large-scale mining of polymetallic nodules are currently less known. In 2019 the Belgian and German licence area in the Clarion-Clipperton Zone (Eastern Pacific) were studied to obtain further baseline characteristics of the 4000 m deep polymetallic nodule fields. Here, we present: i) diversity and distribution of the present & active microbial communities of polymetallic nodules and ii) abundance and activity of relevant metal-cycling microorganisms by quantification of extracellular enzyme activity and 16S rRNA amplicon sequencing. Further we aim to enrich potential metal-cycling microorganisms and investigate microbial metabolisms by metagenomic/-transcriptomic from polymetallic nodules. Our results may provide a new set of tools for monitoring ecosystem impacts associated with deep-sea polymetallic nodule mining. New regulations are required to protect these areas from irreversible anthropogenic impacts.



Item Type
Conference (Conference paper)
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Not peer-reviewed
Publication Status
Published
Event Details
Goldschmidt 2020, 10 Aug 2020 - 11 Aug 2020, Virtuell.
Eprint ID
53462
Cite as
Otte, J. M. , Volz, J. , Janßen, S. , Molari, M. and Wenzhöfer, F. (2020): Active metal-cycling microbial communities of polymetallic nodules from the Eastern Pacific Ocean , Goldschmidt 2020, Virtuell, 10 August 2020 - 11 August 2020 .


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