Ubiquitous healthy diatoms in the deep sea confirm deep carbon injection by the biological pump

Handle URI:
http://hdl.handle.net/10754/560370
Title:
Ubiquitous healthy diatoms in the deep sea confirm deep carbon injection by the biological pump
Authors:
Agusti, Susana ( 0000-0003-0536-7293 ) ; González-Gordillo, J. I.; Vaqué, D.; Estrada, M.; Cerezo, M. I.; Salazar, G.; Gasol, J. M.; Duarte, Carlos M. ( 0000-0002-1213-1361 )
Abstract:
The role of the ocean as a sink for CO2 is partially dependent on the downward transport of phytoplankton cells packaged within fast-sinking particles. However, whether such fast-sinking mechanisms deliver fresh organic carbon down to the deep bathypelagic sea and whether this mechanism is prevalent across the ocean requires confirmation. Here we report the ubiquitous presence of healthy photosynthetic cells, dominated by diatoms, down to 4,000 m in the deep dark ocean. Decay experiments with surface phytoplankton suggested that the large proportion (18%) of healthy photosynthetic cells observed, on average, in the dark ocean, requires transport times from a few days to a few weeks, corresponding to sinking rates (124–732 m d−1) comparable to those of fast-sinking aggregates and faecal pellets. These results confirm the expectation that fast-sinking mechanisms inject fresh organic carbon into the deep sea and that this is a prevalent process operating across the global oligotrophic ocean.
KAUST Department:
Red Sea Research Center (RSRC)
Citation:
Ubiquitous healthy diatoms in the deep sea confirm deep carbon injection by the biological pump 2015, 6:7608 Nature Communications
Journal:
Nature Communications
Issue Date:
9-Jul-2015
DOI:
10.1038/ncomms8608
Type:
Article
ISSN:
2041-1723
Additional Links:
http://www.nature.com/doifinder/10.1038/ncomms8608
Appears in Collections:
Articles; Red Sea Research Center (RSRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorAgusti, Susanaen
dc.contributor.authorGonzález-Gordillo, J. I.en
dc.contributor.authorVaqué, D.en
dc.contributor.authorEstrada, M.en
dc.contributor.authorCerezo, M. I.en
dc.contributor.authorSalazar, G.en
dc.contributor.authorGasol, J. M.en
dc.contributor.authorDuarte, Carlos M.en
dc.date.accessioned2015-07-14T12:02:23Zen
dc.date.available2015-07-14T12:02:23Zen
dc.date.issued2015-07-09en
dc.identifier.citationUbiquitous healthy diatoms in the deep sea confirm deep carbon injection by the biological pump 2015, 6:7608 Nature Communicationsen
dc.identifier.issn2041-1723en
dc.identifier.doi10.1038/ncomms8608en
dc.identifier.urihttp://hdl.handle.net/10754/560370en
dc.description.abstractThe role of the ocean as a sink for CO2 is partially dependent on the downward transport of phytoplankton cells packaged within fast-sinking particles. However, whether such fast-sinking mechanisms deliver fresh organic carbon down to the deep bathypelagic sea and whether this mechanism is prevalent across the ocean requires confirmation. Here we report the ubiquitous presence of healthy photosynthetic cells, dominated by diatoms, down to 4,000 m in the deep dark ocean. Decay experiments with surface phytoplankton suggested that the large proportion (18%) of healthy photosynthetic cells observed, on average, in the dark ocean, requires transport times from a few days to a few weeks, corresponding to sinking rates (124–732 m d−1) comparable to those of fast-sinking aggregates and faecal pellets. These results confirm the expectation that fast-sinking mechanisms inject fresh organic carbon into the deep sea and that this is a prevalent process operating across the global oligotrophic ocean.en
dc.relation.urlhttp://www.nature.com/doifinder/10.1038/ncomms8608en
dc.rightsThis work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/en
dc.titleUbiquitous healthy diatoms in the deep sea confirm deep carbon injection by the biological pumpen
dc.typeArticleen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.identifier.journalNature Communicationsen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionDepartment of Global Change Research, IMEDEA (CSIC-UIB), Miquel Marqués 21, Esporles 07190, Spainen
dc.contributor.institutionDepartment of Biology, Campus de Excelencia Internacional del Mar (CEIMAR), Universidad de Cádiz, Puerto Real (Cádiz) 11510, Spainen
dc.contributor.institutionInstitut de Ciències del Mar, CSIC, Passeig Marítim de la Barceloneta 37-49, Barcelona, Catalunya E 08003, Spainen
kaust.authorDuarte, Carlos M.en
kaust.authorAgusti, Susanaen
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