Extending the dataset of fluid geochemistry of the Menez Gwen, Lucky Strike, Rainbow, TAG and Snake Pit hydrothermal vent fields: Investigation of temporal stability and organic contribution

Konn, Cécile; Donval, Jean-Pierre; Guyader, Vivien; Germain, Yoan; Alix, Anne-Sophie; Roussel, Erwan G.; Rouxel, Olivier

doi:10.1016/j.dsr.2021.103630

Cited by 8 publications

(6 citation statements)

References 157 publications

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“…Samples are then acidified to pH 1.8 with ultrapure HCl and stored in LDPE bottles. Compositions of both major and minor elements were measured by high-resolution inductively coupled plasma mass spectrometry (HR-ICPMS) Element XR operated at Ifremer following previously described methods (Rouxel et al, 2018; Konn et al, 2022). In short, isotopes 44 Ca, 39 K, 24 Mg, 32 S, 28 Si, 56 Fe, 55 Mn, 63 Cu, 66 Zn, 27 Al, 51 V, 31 P are measured in medium mass resolution mode, while isotopes 7 Li, 11 B, 85 Rb, 88 Sr, 89 Y, 98 Mo, 238 U, are measured in low mass resolution mode.…”

Section: Methodsmentioning

confidence: 99%

A step towards measuring connectivity in the deep sea: elemental fingerprints of mollusk larval shells discriminate hydrothermal vent sites

Mouchi

Pécheyran

Claverie

et al. 2023

Preprint

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Deep-sea hydrothermal vent systems are under investigation for metal and rare earth element exploitations. The negative impacts on natural and endemic populations in these areas are still unclear. Larval dispersal is critical for colonization and settlements of populations in marine environments, and assessing connectivity is challenging, especially in deep-sea environments. Here, we investigate the potential of elemental fingerprinting of mollusc larval shells to discriminate larvae origins between multiple hydrothermal sites in the Southwest Pacific Ocean. We identified the gastropod Shinkailepas tollmanni as a suitable candidate as this species uses capsules to hold larvae before dispersal, which facilitates sampling. Cutting-edge femto-second laser ablation was performed to obtain individual measurements on 600 larval shells. We used classification methods to discriminate the origin of these individuals from 14 sampled hydrothermal sites across 3,500 km, with an overall success rate of 70%. When considering less sites within a more restricted area, reflecting dispersal distances inferred from genetic or modelling approaches, we increase the success rate up to 86%. We conclude that elemental fingerprinting is a suitable method to assess connectivity from hydrothermal vent populations, and that the measurements of preserved larval shells in juvenile individuals (i.e., those who completed dispersal) can give reliable information on their geographic origin.

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Section: Methodsmentioning

confidence: 99%

A step towards measuring connectivity in the deep sea: elemental fingerprints of mollusk larval shells discriminate hydrothermal vent sites

Mouchi

Pécheyran

Claverie

et al. 2023

Preprint

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“…3c) and contain the highest dissolved Fe of any MOR vent fluid yet studied 150 (Supplementary Data). Elevated CH 4 and H 2 in MAR high-temperature vents probably reflect a gabbroic and ultramafic influence in the subsurface 140,151,152 . Heat output from Rainbow has been estimated at 1-5 GW (ref.…”

Section: Nature Reviews Earth and Environmentmentioning

confidence: 96%

“…Fluids in serpentinizing environments characteristically have elevated concentrations of methane, formate, ethane, propane and other straight-chain hydrocarbons 152,156,177 . H 2 production and the formation of organic molecules and reduced C-species have been considered to occur through abiotic reactions, catalysed by Fe-, Ni-and Cr-bearing minerals, and have important consequences for global chemical cycles and biological activity on and within the seafloor 218 .…”

Section: Boxmentioning

confidence: 99%

Diversity of magmatism, hydrothermal processes and microbial interactions at mid-ocean ridges

Früh-Green

Kelley

Lilley

et al. 2022

Nat Rev Earth Environ

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Hydrothermal circulation and alteration at mid-ocean ridges and ridge flanks have a key role in regulating seawater chemistry and global chemical fluxes, and support diverse ecosystems in the absence of light. In this Review, we outline tectonic, magmatic and hydrothermal processes that govern crustal architecture, alteration and biogeochemical cycles along mid-ocean ridges with different spreading rates. In general, hydrothermal systems vary from those that are magmatic-dominated with low-pH fluids >300 °C to serpentinizing systems with alkaline fluids <120 °C. Typically, slow-spreading ridges (rates <40 mm yr −1 ) have greater variability in magmatism, lithology and vent chemistry, which are influenced by detachment faults that expose lower-crustal and serpentinized mantle rocks. Hydrothermal alteration is an important sink for magnesium, sodium, sulfate and bicarbonate, and a net source of volatiles, iron and other nutrients to the deep ocean and vent ecosystems. Magmatic hydrothermal systems sustain a vast, hot and diverse microbial biosphere that represents a deep organic carbon source to ocean carbon budgets. In contrast, high-pH serpentinizing hydrothermal systems harbour a more limited microbial community consisting primarily of methanemetabolizing archaea. Continued advances in monitoring and analytical capabilities coupled with developments in metagenomic technologies will guide future investigations and discoveries in hydrothermal systems. Sections• Basalt-hosted systems support a vast, hot and diverse microbial biosphere, in contrast to serpentinizing systems, which sustain more limited microbial communities primarily dominated by methane-metabolizing archaea. Advanced technologies allow better characterization of the genetic makeup and metabolism of microbes and the role of viruses in shaping diversity.Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author selfarchiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

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“…Samples were then acidified to pH 1.8 with ultrapure HCl and stored in LDPE bottles. Compositions of both major and minor elements were measured by high-resolution inductively coupled plasma mass spectrometry (HR-ICPMS) Element XR operated at Ifremer following previously described methods (Rouxel et al, 2018;Konn et al, 2022). In short, isotopes 44 Ca, 39 K, 24 Mg, 32 S, 28 Si, 56 Fe, 55 Mn, 63 Cu, 66 Zn, 27 Al, 51 V, and 31 P are measured in medium-mass-resolution mode, while isotopes 7 Li, 11 B, 85 Rb, 88 Sr, 89 Y, 98 Mo, and 238 U are measured in low-mass-resolution mode.…”

Section: Habitat Water Composition Analysismentioning

confidence: 99%

A step towards measuring connectivity in the deep sea: elemental fingerprints of mollusk larval shells discriminate hydrothermal vent sites

Mouchi,

Pecheyran,

Claverie

et al. 2024

Biogeosciences

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Abstract. Deep-sea hydrothermal vent systems are under investigation for base and precious metal exploitations. The impact of mining will depend critically on the ability of larval dispersal to connect and replenish endemic populations. However, assessing connectivity is extremely challenging, especially in the deep sea. Here, we investigate the potential of elemental fingerprinting of mollusk larval shells to discriminate larval origins between multiple hydrothermal sites in the southwest Pacific Ocean. The gastropod Shinkailepas tollmanni represents a suitable candidate as it uses capsules to hold larvae before dispersal, which facilitates sampling and ensures mineralization occurs on the site of origin. Multielemental microchemistry was performed using cutting-edge femtosecond laser ablation inductively coupled plasma mass spectrometry analysis to obtain individual measurements on 600 encapsulated larval shells. We used classification methods to discriminate the origin of individuals from 14 hydrothermal sites spanning over 3500 km, with an overall success rate of 70 %. When considering fewer sites within more restricted areas, reflecting dispersal distances reported by genetic and modeling approaches, the success rate increased up to 86 %. We conclude that individual larval shells register site-specific elemental signatures that can be used to assess their origin. These results open new perspectives to get direct estimates on population connectivity from the geochemistry of pre-dispersal shells of recently settled juveniles.

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Extending the dataset of fluid geochemistry of the Menez Gwen, Lucky Strike, Rainbow, TAG and Snake Pit hydrothermal vent fields: Investigation of temporal stability and organic contribution

Cited by 8 publications

References 157 publications

A step towards measuring connectivity in the deep sea: elemental fingerprints of mollusk larval shells discriminate hydrothermal vent sites

A step towards measuring connectivity in the deep sea: elemental fingerprints of mollusk larval shells discriminate hydrothermal vent sites

Diversity of magmatism, hydrothermal processes and microbial interactions at mid-ocean ridges

A step towards measuring connectivity in the deep sea: elemental fingerprints of mollusk larval shells discriminate hydrothermal vent sites

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