Microbes contribute to setting the ocean carbon flux by altering the fate of sinking particulates
Trang T H Nguyen
(1)
,
Emily J Zakem
(1)
,
Ali Ebrahimi
(2)
,
Julia Schwartzman
(2)
,
Tolga Caglar
(3)
,
Kapil Amarnath
(3)
,
Uria Alcolombri
(4)
,
François J Peaudecerf
(4)
,
Terence Hwa
(3)
,
Roman Stocker
(4)
,
Otto X Cordero
(2)
,
Naomi M Levine
(1)
Trang T H Nguyen
- Fonction : Auteur
- PersonId : 1208557
- ORCID : 0000-0002-4526-6879
Ali Ebrahimi
- Fonction : Auteur
- PersonId : 1208558
- ORCID : 0000-0003-1079-7976
Julia Schwartzman
- Fonction : Auteur
- PersonId : 1208559
- ORCID : 0000-0003-4563-4835
Kapil Amarnath
- Fonction : Auteur
- PersonId : 1208560
- ORCID : 0000-0003-2589-9684
Uria Alcolombri
- Fonction : Auteur
- PersonId : 1208554
- ORCID : 0000-0003-3561-5091
François J Peaudecerf
- Fonction : Auteur
- PersonId : 1199448
- IdHAL : francois-peaudecerf
- ORCID : 0000-0003-0295-4556
Terence Hwa
- Fonction : Auteur
- PersonId : 1208561
- ORCID : 0000-0003-1837-6842
Roman Stocker
- Fonction : Auteur
- PersonId : 1208555
- ORCID : 0000-0002-3199-0508
Otto X Cordero
- Fonction : Auteur
- PersonId : 1208562
- ORCID : 0000-0002-2695-270X
Naomi M Levine
- Fonction : Auteur
- PersonId : 1208563
- ORCID : 0000-0002-4963-0535
Résumé
Sinking particulate organic carbon out of the surface ocean sequesters carbon on decadal to millennial timescales. Predicting the particulate carbon flux is therefore critical for understanding both global carbon cycling and the future climate. Microbes play a crucial role in particulate organic carbon degradation, but the impact of depth-dependent microbial dynamics on ocean-scale particulate carbon fluxes is poorly understood. Here we scale-up essential features of particle-associated microbial dynamics to understand the large-scale vertical carbon flux in the ocean. Our model provides mechanistic insight into the microbial contribution to the particulate organic carbon flux profile. We show that the enhanced transfer of carbon to depth can result from populations struggling to establish colonies on sinking particles due to diffusive nutrient loss, cell detachment, and mortality. These dynamics are controlled by the interaction between multiple biotic and abiotic factors. Accurately capturing particle-microbe interactions is essential for predicting variability in large-scale carbon cycling.
Format du dépôt | Fichier |
---|---|
Type de dépôt | Article dans une revue |
Titre |
en
Microbes contribute to setting the ocean carbon flux by altering the fate of sinking particulates
|
Résumé |
en
Sinking particulate organic carbon out of the surface ocean sequesters carbon on decadal to millennial timescales. Predicting the particulate carbon flux is therefore critical for understanding both global carbon cycling and the future climate. Microbes play a crucial role in particulate organic carbon degradation, but the impact of depth-dependent microbial dynamics on ocean-scale particulate carbon fluxes is poorly understood. Here we scale-up essential features of particle-associated microbial dynamics to understand the large-scale vertical carbon flux in the ocean. Our model provides mechanistic insight into the microbial contribution to the particulate organic carbon flux profile. We show that the enhanced transfer of carbon to depth can result from populations struggling to establish colonies on sinking particles due to diffusive nutrient loss, cell detachment, and mortality. These dynamics are controlled by the interaction between multiple biotic and abiotic factors. Accurately capturing particle-microbe interactions is essential for predicting variability in large-scale carbon cycling.
|
Auteur(s) |
Trang T H Nguyen
1
, Emily J Zakem
1
, Ali Ebrahimi
2
, Julia Schwartzman
2
, Tolga Caglar
3
, Kapil Amarnath
3
, Uria Alcolombri
4
, François J Peaudecerf
4
, Terence Hwa
3
, Roman Stocker
4
, Otto X Cordero
2
, Naomi M Levine
1
1
USC -
University of Southern California
( 301992 )
- Los Angeles, CA, 90089-0484, USA
- États-Unis
2
MIT Parsons Laboratory
( 71838 )
- Cambridge, Massachusetts
- États-Unis
3
UC San Diego -
University of California [San Diego]
( 300717 )
- UCSD, 9500 Gilman Dr., La Jolla, CA 92093 USA
- États-Unis
4
D-BAUG -
Department of Civil, Environmental and Geomatic Engineering [ETH Zürich]
( 451621 )
- Stefano-Franscini-Platz 5, Postfach 193, CH-8093 Zürich
- Suisse
|
Date de publication |
2022
|
Date de publication électronique |
2022-03-29
|
Langue du document |
Anglais
|
Licence |
Paternité
|
Nom de la revue |
|
Volume |
13
|
Numéro |
1
|
Page/Identifiant |
1657
|
Vulgarisation |
Non
|
Comité de lecture |
Oui
|
Audience |
Internationale
|
Domaine(s) |
|
DOI | 10.1038/s41467-022-29297-2 |
Fichier principal
Nguyen et al. - 2022 - Microbes contribute to setting the ocean carbon flux by altering the fate of sinking particulates.pdf ( 21.76 Mo
)
Télécharger
Loading...