Salp blooms drive strong increases in passive carbon export in the Southern Ocean

The Southern Ocean contributes substantially to the global biological carbon pump (BCP). Salps in the Southern Ocean, in particular Salpa thompsoni, are important grazers that produce large, fast-sinking fecal pellets. Here, we quantify the salp bloom impacts on microbial dynamics and the BCP, by co...

Full description

Saved in:
Bibliographic Details
Main Authors: Décima, Moira, Stukel, Michael R., Nodder, Scott D., Gutiérrez-Rodríguez, Andrés, Selph, Karen E., Dos Santos, Adriana Lopes, Safi, Karl, Kelly, Thomas B., Deans, Fenella, Morales, Sergio E., Baltar, Federico, Latasa, Mikel, Gorbunov, Maxim Y., Pinkerton, Matt
Other Authors: Asian School of the Environment
Format: Article
Language:English
Published: 2023
Subjects:
Online Access:https://hdl.handle.net/10356/169740
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-169740
record_format dspace
spelling sg-ntu-dr.10356-1697402023-08-07T15:30:41Z Salp blooms drive strong increases in passive carbon export in the Southern Ocean Décima, Moira Stukel, Michael R. Nodder, Scott D. Gutiérrez-Rodríguez, Andrés Selph, Karen E. Dos Santos, Adriana Lopes Safi, Karl Kelly, Thomas B. Deans, Fenella Morales, Sergio E. Baltar, Federico Latasa, Mikel Gorbunov, Maxim Y. Pinkerton, Matt Asian School of the Environment Science::Biological sciences Southern Ocean Zooplankton The Southern Ocean contributes substantially to the global biological carbon pump (BCP). Salps in the Southern Ocean, in particular Salpa thompsoni, are important grazers that produce large, fast-sinking fecal pellets. Here, we quantify the salp bloom impacts on microbial dynamics and the BCP, by contrasting locations differing in salp bloom presence/absence. Salp blooms coincide with phytoplankton dominated by diatoms or prymnesiophytes, depending on water mass characteristics. Their grazing is comparable to microzooplankton during their early bloom, resulting in a decrease of ~1/3 of primary production, and negative phytoplankton rates of change are associated with all salp locations. Particle export in salp waters is always higher, ranging 2- to 8- fold (average 5-fold), compared to non-salp locations, exporting up to 46% of primary production out of the euphotic zone. BCP efficiency increases from 5 to 28% in salp areas, which is among the highest recorded in the global ocean. Published version This study was funded by the Ministry for Business, Innovation and Employment (MBIE) of New Zealand, NIWA core programs Coast and Oceans Food Webs (COES) and Ocean Flows (COOF), the Royal Society of New Zealand Marsden Fast-track award to M.D., and NSF award #OCE-1756610 to M.R.S. and K.E.S. 2023-08-01T07:42:20Z 2023-08-01T07:42:20Z 2023 Journal Article Décima, M., Stukel, M. R., Nodder, S. D., Gutiérrez-Rodríguez, A., Selph, K. E., Dos Santos, A. L., Safi, K., Kelly, T. B., Deans, F., Morales, S. E., Baltar, F., Latasa, M., Gorbunov, M. Y. & Pinkerton, M. (2023). Salp blooms drive strong increases in passive carbon export in the Southern Ocean. Nature Communications, 14(1), 425-. https://dx.doi.org/10.1038/s41467-022-35204-6 2041-1723 https://hdl.handle.net/10356/169740 10.1038/s41467-022-35204-6 36732522 2-s2.0-85147319344 1 14 425 en Nature Communications © The Author(s) 2023. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/ licenses/by/4.0/. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Science::Biological sciences
Southern Ocean
Zooplankton
spellingShingle Science::Biological sciences
Southern Ocean
Zooplankton
Décima, Moira
Stukel, Michael R.
Nodder, Scott D.
Gutiérrez-Rodríguez, Andrés
Selph, Karen E.
Dos Santos, Adriana Lopes
Safi, Karl
Kelly, Thomas B.
Deans, Fenella
Morales, Sergio E.
Baltar, Federico
Latasa, Mikel
Gorbunov, Maxim Y.
Pinkerton, Matt
Salp blooms drive strong increases in passive carbon export in the Southern Ocean
description The Southern Ocean contributes substantially to the global biological carbon pump (BCP). Salps in the Southern Ocean, in particular Salpa thompsoni, are important grazers that produce large, fast-sinking fecal pellets. Here, we quantify the salp bloom impacts on microbial dynamics and the BCP, by contrasting locations differing in salp bloom presence/absence. Salp blooms coincide with phytoplankton dominated by diatoms or prymnesiophytes, depending on water mass characteristics. Their grazing is comparable to microzooplankton during their early bloom, resulting in a decrease of ~1/3 of primary production, and negative phytoplankton rates of change are associated with all salp locations. Particle export in salp waters is always higher, ranging 2- to 8- fold (average 5-fold), compared to non-salp locations, exporting up to 46% of primary production out of the euphotic zone. BCP efficiency increases from 5 to 28% in salp areas, which is among the highest recorded in the global ocean.
author2 Asian School of the Environment
author_facet Asian School of the Environment
Décima, Moira
Stukel, Michael R.
Nodder, Scott D.
Gutiérrez-Rodríguez, Andrés
Selph, Karen E.
Dos Santos, Adriana Lopes
Safi, Karl
Kelly, Thomas B.
Deans, Fenella
Morales, Sergio E.
Baltar, Federico
Latasa, Mikel
Gorbunov, Maxim Y.
Pinkerton, Matt
format Article
author Décima, Moira
Stukel, Michael R.
Nodder, Scott D.
Gutiérrez-Rodríguez, Andrés
Selph, Karen E.
Dos Santos, Adriana Lopes
Safi, Karl
Kelly, Thomas B.
Deans, Fenella
Morales, Sergio E.
Baltar, Federico
Latasa, Mikel
Gorbunov, Maxim Y.
Pinkerton, Matt
author_sort Décima, Moira
title Salp blooms drive strong increases in passive carbon export in the Southern Ocean
title_short Salp blooms drive strong increases in passive carbon export in the Southern Ocean
title_full Salp blooms drive strong increases in passive carbon export in the Southern Ocean
title_fullStr Salp blooms drive strong increases in passive carbon export in the Southern Ocean
title_full_unstemmed Salp blooms drive strong increases in passive carbon export in the Southern Ocean
title_sort salp blooms drive strong increases in passive carbon export in the southern ocean
publishDate 2023
url https://hdl.handle.net/10356/169740
_version_ 1779156552558575616