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Axial Seamount shipboard and seafloor incubator RNA-SIP experiments from 2015

ABSTRACT: Axial Seamount RNA-SIP experiments from Marker 33 vent, via shipboard and seafloor incubator

PROVIDER: PRJEB38697 | ENA |

REPOSITORIES: ENA

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Axial Seamount 18S rRNA gene amplicons

Project description:Axial Seamount 18S rRNA gene amplicons Raw sequence reads

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Marker 113 RNA-SIP metatranscriptomes, 2013

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Axial Seamount Metagenomes 2011-2012

Project description:Metagenomes and metatranscriptomes from the diffuse hydrothermal vents of Axial Seamount, 2011-2012

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Metagenomes and metatranscriptomes from Axial Seamount, 2013-2014.

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Axial Seamount Metagenomes 2011-2012 metagenomic assembly

Project description:EMG produced TPA metagenomics assembly of the Metagenomes and metatranscriptomes from the diffuse hydrothermal vents of Axial Seamount, 2011-2012 (Axial Seamount Metagenomes 2011-2012) data set

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Seamount sheath water: years-long retention of deep-ocean water traced by bacterioplankton

Project description:Seamounts, often rising hundreds of metres above the surrounding seafloor, obstruct the flow of deep-ocean water. While the resultant entrainment of deep-water by seamounts is predicted from ocean circulation models, its empirical validation has been hampered by the large scale and slow rate of the interaction. To overcome these limitations we use the growth of planktonic bacteria to assess the interaction rate. The selected study site, Tropic Seamount, in the North-Eastern Atlantic represents the majority of isolated seamounts, which do not affect the surface ocean waters. We prove deep-water is entrained by the seamount by measuring 2.3 times higher bacterial concentrations in the seamount-associated or ‘sheath’ water than in deep-ocean water unaffected by seamounts. Genomic analyses of the dominant sheath-water bacteria confirm their planktonic origin, whilst proteomic analyses indicate their slow growth. According to our radiotracer experiments, the doubling time of sheath-water bacterioplankton is 1.5 years. Therefore, for bacterioplankton concentration to reach 2.3 times higher in the ambient seawater, the seamount would need to retain deep-ocean water for more than 3.5 years. We propose that turbulent mixing of the retained sheath-water could stimulate bacterioplankton growth by increasing the cell encounter rate with the ambient dissolved organic molecules. If some of these molecules chelate hydroxides of iron and manganese, bacterioplankton consumption of the organic chelators would result in precipitation of insoluble hydroxides. Hence precipitated hydroxides would form ferromanganese deposits as a result of the bacterioplankton-mediated deep-water seamount interaction.

2020-05-27 | PXD016702 | Pride

2014 'Omics from the diffuse hydrothermal vents of Axial Seamount

Project description:Metagenomes and metatranscriptomes from the diffuse hydrothermal vents of Axial Seamount from 2014

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2013 'Omics from the diffuse hydrothermal vents of Axial Seamount

Project description:Metagenomes and metatranscriptomes from the diffuse hydrothermal vents of Axial Seamount from 2013

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2015 'Omics from the diffuse hydrothermal vents of Axial Seamount

Project description:Metagenomes and metatranscriptomes from the diffuse hydrothermal vents of Axial Seamount from 2015

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2013 'Omics from the diffuse hydrothermal vents of Axial Seamount metagenomic assembly

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