Patterns of eukaryotic diversity from the surface to the deep-ocean sediment | Zendy

Tristan Cordier | Zendy; Inés Barrenechea Angeles | Zendy; Nicolas Henry | Zendy; Franck Lejzerowicz | Zendy; Cédric Berney | Zendy; Raphaël Morard | Zendy; Angelika Brandt | Zendy; MarieAnne CambonBonavita | Zendy; Lionel Guidi | Zendy; Fabien Lombard | Zendy; Pedro Martínez Arbizu | Zendy; Ramón Massana | Zendy; Covadonga Orejas | Zendy; Julie Poulain | Zendy; Craig R. Smith | Zendy; Patrick Wincker | Zendy; Sophie ArnaudHaond | Zendy; Andrew J. Gooday | Zendy; Colomban de Vargas | Zendy; Jan Pawłowski | Zendy

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Patterns of eukaryotic diversity from the surface to the deep-ocean sediment

Author(s) -

Tristan Cordier,

Inés Barrenechea Angeles,

Nicolas Henry,

Franck Lejzerowicz,

Cédric Berney,

Raphaël Morard,

Angelika Brandt,

MarieAnne CambonBonavita,

Lionel Guidi,

Fabien Lombard,

Pedro Martínez Arbizu,

Ramón Massana,

Covadonga Orejas,

Julie Poulain,

Craig R. Smith,

Patrick Wincker,

Sophie ArnaudHaond,

Andrew J. Gooday,

Colomban de Vargas,

Jan Pawłowski

Publication year - 2022

Publication title -

science advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.928

H-Index - 146

ISSN - 2375-2548

DOI - 10.1126/sciadv.abj9309

Subject(s) - bathyal zone , benthic zone , plankton , oceanography , photic zone , pelagic zone , sediment trap , deep sea , environmental science , biodiversity , sediment , ecology , geology , biology , phytoplankton , paleontology , water column , nutrient

Remote deep-ocean sediment (DOS) ecosystems are among the least explored biomes on Earth. Genomic assessments of their biodiversity have failed to separate indigenous benthic organisms from sinking plankton. Here, we compare global-scale eukaryotic DNA metabarcoding datasets (18S -V9) from abyssal and lower bathyal surficial sediments and euphotic and aphotic ocean pelagic layers to distinguish plankton from benthic diversity in sediment material. Based on 1685 samples collected throughout the world ocean, we show that DOS diversity is at least threefold that in pelagic realms, with nearly two-thirds represented by abundant yet unknown eukaryotes. These benthic communities are spatially structured by ocean basins and particulate organic carbon (POC) flux from the upper ocean. Plankton DNA reaching the DOS originates from abundant species, with maximal deposition at high latitudes. Its seafloor DNA signature predicts variations in POC export from the surface and reveals previously overlooked taxa that may drive the biological carbon pump.

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