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Article Dans Une Revue Journal of Plankton Research Année : 2021

The rôles of plankton and neuston microbial organic matter in climate regulation

Ian Jenkinson
Elisa Berdalet
Wei-Chun Chin
Michel Denis
Haibing Ding
Jizhou Duan
Igor Emri
Santosh Karn
Zhuo Li
  • Fonction : Auteur
Alenka Malej
Xavier Mari
Laurent Seuront
Jun Sun
Tim Wyatt
  • Fonction : Auteur
Wuchang Zhang
Oliver Wurl

Résumé

Abstract Plankton and neuston microbes produce organic matter (OM), which accumulates in the sea surface microlayer (SML). Fluxes of heat and momentum exchange across the sea-air interface, as do fluxes of matter, including greenhouse gases, aerosols, microbes (algae, bacteria sensu lato and viruses) and other substances. At least at calm to moderate windspeeds, microbial OM (MOM) in the SML reduces these fluxes. Another MOM fraction, foam, covers a part of the ocean surface. Ocean foam increases mean ocean albedo because it reflects solar radiation, thus cooling the ocean and the Earth. The rheological properties of MOM and the reduction of sea-air fluxes depend on microbial abundance and taxonomic composition, as do the formation and persistence of foam. Genomic regulation of MOM secretion may thus be helping to regulate air-sea fluxes and climate. Unpredictable changes in abundance and taxonomic composition of these microbial communities may be adding uncertainty to global and more local climate. Some of this uncertainty could be mitigated by studying the ecology and genomics of the surface microbial community together with chemical and rheological properties of their secreted MOM and its effects on sea-air fluxes and foam coverage, to incorporate into climate models.

Dates et versions

hal-03457385 , version 1 (30-11-2021)

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Citer

Ian Jenkinson, Elisa Berdalet, Wei-Chun Chin, Michel Denis, Haibing Ding, et al.. The rôles of plankton and neuston microbial organic matter in climate regulation. Journal of Plankton Research, 2021, ⟨10.1093/plankt/fbab067⟩. ⟨hal-03457385⟩
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