Created 05/02/2022 Updated 22/12/2022
05 Feb

The deep-ocean floor is the least explored ecosystem on the planet, despite covering more than 60% of the Earth surface. Largely unknown life in abyssal sediments, from benthic animals to microbes, helps to recycle and/or sequester the sinking (in)organic matter originating from pelagic communities that are numerically dominated by microscopic plankton. Benthic ecosystems thus underpin two major ecosystem services of planetary importance: the healthy functioning of ocean food-webs and the burial of carbon on geological timescales, both of which are critical regulators of the Earth climate.


Cordier T., Barrenechea Angeles, I., Henry, N., Lejzerowicz, F., Berney, C., Morard, R., Brandt, A., Cambon-Bonavita, M-A., Guidi, L., Lombard, F., Martinez Arbizu, P., Massana, R., Orejas, C., Poulain, J., Smith, C.R., Wincker, P., Arnaud-Haond, S., Gooday, A.J., de Vargas, C., Pawlowski, J. Patterns of eukaryotic diversity from the surface to the deep-ocean sediment. Science Advances, In Press.



Colomban De Vargas

Fédération de recherche Global Ocean Systems Ecology and Evolution (GO-SEE)