Temperature regulation of marine heterotrophic prokaryotes increases latitudinally as a breach between bottom-up and top-down controls

Handle URI:
http://hdl.handle.net/10754/623304
Title:
Temperature regulation of marine heterotrophic prokaryotes increases latitudinally as a breach between bottom-up and top-down controls
Authors:
Moran, Xose Anxelu G. ( 0000-0002-9823-5339 ) ; Gasol, Josep M.; Pernice, Massimo C.; Mangot, Jean-François; Massana, Ramon; Lara, Elena; Vaqué, Dolors; Duarte, Carlos M. ( 0000-0002-1213-1361 )
Abstract:
Planktonic heterotrophic prokaryotes make up the largest living biomass and process most organic matter in the ocean. Determining when and where the biomass and activity of heterotrophic prokaryotes are controlled by resource availability (bottom-up), predation and viral lysis (top-down) or temperature will help in future carbon cycling predictions. We conducted an extensive survey across subtropical and tropical waters of the Atlantic, Indian and Pacific Oceans during the Malaspina 2010 Global Circumnavigation Expedition and assessed indices for these three types of controls at 109 stations (mostly from the surface to 4000 m depth). Temperature control was approached by the apparent activation energy in eV (ranging from 0.46 to 3.41), bottom-up control by the slope of the log-log relationship between biomass and production rate (ranging from -0.12 to 1.09) and top-down control by an index that considers the relative abundances of heterotrophic nanoflagellates and viruses (ranging from 0.82 to 4.83). We conclude that temperature becomes dominant (i.e. activation energy >1.5 eV) within a narrow window of intermediate values of bottom-up (0.3-0.6) and top-down 0.8-1.2) controls. A pervasive latitudinal pattern of decreasing temperature regulation towards the Equator, regardless of the oceanic basin, suggests that the impact of global warming on marine microbes and their biogeochemical function will be more intense at higher latitudes. Our analysis predicts that 1°C ocean warming will result in increased biomass of heterotrophic prokaryoplankton only in waters with <26°C of mean annual surface temperature. This article is protected by copyright. All rights reserved.
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division; Red Sea Research Center (RSRC)
Citation:
Morán XAG, Gasol JM, Pernice MC, Mangot J-F, Massana R, et al. (2017) Temperature regulation of marine heterotrophic prokaryotes increases latitudinally as a breach between bottom-up and top-down controls. Global Change Biology. Available: http://dx.doi.org/10.1111/gcb.13730.
Publisher:
Wiley-Blackwell
Journal:
Global Change Biology
Issue Date:
19-Apr-2017
DOI:
10.1111/gcb.13730
Type:
Article
ISSN:
1354-1013
Sponsors:
This study was funded by the Malaspina 2010 Global Circumnavigation Expedition (Consolider-Ingenio 2010 grant CSD2008-00077). We thank all the colleagues and crew on board of R/V Hespérides for their help in collecting and processing the samples, especially the rest of the members of the microbial oceanography team and particularly Ana Gomes and Laura Díaz-Pérez among them.
Additional Links:
http://onlinelibrary.wiley.com/doi/10.1111/gcb.13730/abstract
Appears in Collections:
Articles; Red Sea Research Center (RSRC); Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorMoran, Xose Anxelu G.en
dc.contributor.authorGasol, Josep M.en
dc.contributor.authorPernice, Massimo C.en
dc.contributor.authorMangot, Jean-Françoisen
dc.contributor.authorMassana, Ramonen
dc.contributor.authorLara, Elenaen
dc.contributor.authorVaqué, Dolorsen
dc.contributor.authorDuarte, Carlos M.en
dc.date.accessioned2017-05-01T06:32:06Z-
dc.date.available2017-05-01T06:32:06Z-
dc.date.issued2017-04-19en
dc.identifier.citationMorán XAG, Gasol JM, Pernice MC, Mangot J-F, Massana R, et al. (2017) Temperature regulation of marine heterotrophic prokaryotes increases latitudinally as a breach between bottom-up and top-down controls. Global Change Biology. Available: http://dx.doi.org/10.1111/gcb.13730.en
dc.identifier.issn1354-1013en
dc.identifier.doi10.1111/gcb.13730en
dc.identifier.urihttp://hdl.handle.net/10754/623304-
dc.description.abstractPlanktonic heterotrophic prokaryotes make up the largest living biomass and process most organic matter in the ocean. Determining when and where the biomass and activity of heterotrophic prokaryotes are controlled by resource availability (bottom-up), predation and viral lysis (top-down) or temperature will help in future carbon cycling predictions. We conducted an extensive survey across subtropical and tropical waters of the Atlantic, Indian and Pacific Oceans during the Malaspina 2010 Global Circumnavigation Expedition and assessed indices for these three types of controls at 109 stations (mostly from the surface to 4000 m depth). Temperature control was approached by the apparent activation energy in eV (ranging from 0.46 to 3.41), bottom-up control by the slope of the log-log relationship between biomass and production rate (ranging from -0.12 to 1.09) and top-down control by an index that considers the relative abundances of heterotrophic nanoflagellates and viruses (ranging from 0.82 to 4.83). We conclude that temperature becomes dominant (i.e. activation energy >1.5 eV) within a narrow window of intermediate values of bottom-up (0.3-0.6) and top-down 0.8-1.2) controls. A pervasive latitudinal pattern of decreasing temperature regulation towards the Equator, regardless of the oceanic basin, suggests that the impact of global warming on marine microbes and their biogeochemical function will be more intense at higher latitudes. Our analysis predicts that 1°C ocean warming will result in increased biomass of heterotrophic prokaryoplankton only in waters with <26°C of mean annual surface temperature. This article is protected by copyright. All rights reserved.en
dc.description.sponsorshipThis study was funded by the Malaspina 2010 Global Circumnavigation Expedition (Consolider-Ingenio 2010 grant CSD2008-00077). We thank all the colleagues and crew on board of R/V Hespérides for their help in collecting and processing the samples, especially the rest of the members of the microbial oceanography team and particularly Ana Gomes and Laura Díaz-Pérez among them.en
dc.publisherWiley-Blackwellen
dc.relation.urlhttp://onlinelibrary.wiley.com/doi/10.1111/gcb.13730/abstracten
dc.rightsThis is the peer reviewed version of the following article: Temperature regulation of marine heterotrophic prokaryotes increases latitudinally as a breach between bottom-up and top-down controls, which has been published in final form at http://doi.org/10.1111/gcb.13730. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.en
dc.titleTemperature regulation of marine heterotrophic prokaryotes increases latitudinally as a breach between bottom-up and top-down controlsen
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.identifier.journalGlobal Change Biologyen
dc.eprint.versionPost-printen
dc.contributor.institutionInstitut de Ciències del Mar, CSIC; Barcelona Catalonia Spainen
dc.contributor.institutionUniversity of Stockholm; Stockholm Swedenen
kaust.authorMoran, Xose Anxelu G.en
kaust.authorDuarte, Carlos M.en
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