2023
DOI: 10.1038/s43247-023-00732-6
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Chemolithotrophic biosynthesis of organic carbon associated with volcanic ash in the Mariana Trough, Pacific Ocean

Abstract: Volcanic ash is a major component of marine sediment, but its effect on the deep-sea carbon cycle remains enigmatic. Here, we analyzed mineralogical compositions and glycerol dialkyl glycerol tetraether (GDGT) membrane lipids in submarine tuffs from the Mariana Trough, demonstrating a fraction of organic carbon associated with volcanic ash is produced in situ. This likely derives from chemolithotrophic communities supported by alteration of volcanic material. Tuff GDGTs are characterized by enrichment of branc… Show more

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“…The NPP data for the surface waters above the station sites are derived from the standard Vertically Generalized Production Model, using remote sensing data spanning from 2004 to 2018 69 . To explore the relationship between the IMBT index and water depth, we compiled brGDGT data from various studies, including Cao et al 70 , Cao et al 71 , Ceccopieri et al 51 , Crampton-Flood 72 , Crampton-Flood 73 , Crampton-Flood et al 74 , De Jonge et al 19 , De Jonge et al 16 , Li et al 75 , Sinninghe Damsté 22 , Soelen et al 76 , Wang et al 49 , Warden et al 77 , Zell et al 78 , and the present study. Note that brGDGTs in the surface sediments of the KT and AT have been reported in Xu et al 79 , and brGDGTs in the core sediments of the MT have been reported in Xiao et al 24 .…”
Section: Methodsmentioning
confidence: 99%
“…The NPP data for the surface waters above the station sites are derived from the standard Vertically Generalized Production Model, using remote sensing data spanning from 2004 to 2018 69 . To explore the relationship between the IMBT index and water depth, we compiled brGDGT data from various studies, including Cao et al 70 , Cao et al 71 , Ceccopieri et al 51 , Crampton-Flood 72 , Crampton-Flood 73 , Crampton-Flood et al 74 , De Jonge et al 19 , De Jonge et al 16 , Li et al 75 , Sinninghe Damsté 22 , Soelen et al 76 , Wang et al 49 , Warden et al 77 , Zell et al 78 , and the present study. Note that brGDGTs in the surface sediments of the KT and AT have been reported in Xu et al 79 , and brGDGTs in the core sediments of the MT have been reported in Xiao et al 24 .…”
Section: Methodsmentioning
confidence: 99%