Role of microbial and phytoplanktonic communities in the control of seawater viscosity off West Antarctica (30-80°W).
International audience Despitethelong-standingbeliefthatseawaterviscosityisdrivenbytemperatureandsalinity, biologicallyincreasedseawaterviscosityhasrepeatedlybeenreportedinrelationtophytoplankton exudatesinshallow,productivecoastalwaters.Here,seawaterviscositywasinvestigatedinrelationto microbialand...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://hal.archives-ouvertes.fr/hal-00767876 https://doi.org/10.1016/j.dsr2.2008.09.018 |
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ftccsdartic:oai:HAL:hal-00767876v1 2023-05-15T13:47:38+02:00 Role of microbial and phytoplanktonic communities in the control of seawater viscosity off West Antarctica (30-80°W). Seuront, Laurent Leterme, Sc Seymour, Js Mitchell, Jg. Ashcroft, D. Noble, W. Thompson, Pg Davidson, At Van Den Enden, R. Scott, Fj Wright, Sw Chapperon, C. Cribb, N. Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 (LOG) Centre National de la Recherche Scientifique (CNRS)-Université du Littoral Côte d'Opale (ULCO)-Université de Lille-Institut national des sciences de l'Univers (INSU - CNRS) 2010 https://hal.archives-ouvertes.fr/hal-00767876 https://doi.org/10.1016/j.dsr2.2008.09.018 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.dsr2.2008.09.018 hal-00767876 https://hal.archives-ouvertes.fr/hal-00767876 doi:10.1016/j.dsr2.2008.09.018 ISSN: 0146-6291 Deep Sea Research https://hal.archives-ouvertes.fr/hal-00767876 Deep Sea Research, Elsevier, 2010, 57, pp.877-886. ⟨10.1016/j.dsr2.2008.09.018⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2010 ftccsdartic https://doi.org/10.1016/j.dsr2.2008.09.018 2021-12-12T05:37:08Z International audience Despitethelong-standingbeliefthatseawaterviscosityisdrivenbytemperatureandsalinity, biologicallyincreasedseawaterviscosityhasrepeatedlybeenreportedinrelationtophytoplankton exudatesinshallow,productivecoastalwaters.Here,seawaterviscositywasinvestigatedinrelationto microbialandphytoplanktoniccommunitiesoffthecoastofEastAntarcticaalonglatitudinaltransects located between301E and801E insub-surfacewatersandatthedeepchlorophyllmaximum(DCM).The physicalcomponentofseawaterviscosityobservedalongeachtransectsrangedfrom1.80to1.95cP, while theactualseawaterviscosityrangedfrom1.85to3.69cP.Thisresultedinbiologicallyincreased seawaterviscosityreachingupto84.9%insub-surfacewatersand77.6%attheDCM.Significantpositive correlationswerefoundbetweenelevatedseawaterviscosityand(i)bacterialabundanceinsub-surface watersand(ii)chlorophyll a concentrationandtheabundanceofflowcytometrically-definedauto-and heterotrophicprotistsattheDCM.Amongthe12groupsand108speciesofprotistsidentifiedunder light microscopy,dinoflagellatesandmorespecifically Alexandriumtamarense and Prorocentrum sp. were themaincontributorstothepatternsobservedforelevatedseawaterviscosity.Ourobservations, which generalisedthelinkpreviouslyidentifiedbetweenseawaterviscosityandphytoplankton compositionandstandingstocktotheSouthernOcean,arethefirstdemonstrationofincreasesin seawaterviscositylinkedtomarinebacterialcommunities,andsuggestthatthemicrobially-increased viscositymightquantitativelybeatleastasimportantastheonerelatedtophytoplanktonsecretion. & 2009 ElsevierLtd.Allrightsreserved Article in Journal/Newspaper Antarc* Antarctica West Antarctica Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) West Antarctica Deep Sea Research Part II: Topical Studies in Oceanography 57 9-10 877 886 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Seuront, Laurent Leterme, Sc Seymour, Js Mitchell, Jg. Ashcroft, D. Noble, W. Thompson, Pg Davidson, At Van Den Enden, R. Scott, Fj Wright, Sw Chapperon, C. Cribb, N. Role of microbial and phytoplanktonic communities in the control of seawater viscosity off West Antarctica (30-80°W). |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience Despitethelong-standingbeliefthatseawaterviscosityisdrivenbytemperatureandsalinity, biologicallyincreasedseawaterviscosityhasrepeatedlybeenreportedinrelationtophytoplankton exudatesinshallow,productivecoastalwaters.Here,seawaterviscositywasinvestigatedinrelationto microbialandphytoplanktoniccommunitiesoffthecoastofEastAntarcticaalonglatitudinaltransects located between301E and801E insub-surfacewatersandatthedeepchlorophyllmaximum(DCM).The physicalcomponentofseawaterviscosityobservedalongeachtransectsrangedfrom1.80to1.95cP, while theactualseawaterviscosityrangedfrom1.85to3.69cP.Thisresultedinbiologicallyincreased seawaterviscosityreachingupto84.9%insub-surfacewatersand77.6%attheDCM.Significantpositive correlationswerefoundbetweenelevatedseawaterviscosityand(i)bacterialabundanceinsub-surface watersand(ii)chlorophyll a concentrationandtheabundanceofflowcytometrically-definedauto-and heterotrophicprotistsattheDCM.Amongthe12groupsand108speciesofprotistsidentifiedunder light microscopy,dinoflagellatesandmorespecifically Alexandriumtamarense and Prorocentrum sp. were themaincontributorstothepatternsobservedforelevatedseawaterviscosity.Ourobservations, which generalisedthelinkpreviouslyidentifiedbetweenseawaterviscosityandphytoplankton compositionandstandingstocktotheSouthernOcean,arethefirstdemonstrationofincreasesin seawaterviscositylinkedtomarinebacterialcommunities,andsuggestthatthemicrobially-increased viscositymightquantitativelybeatleastasimportantastheonerelatedtophytoplanktonsecretion. & 2009 ElsevierLtd.Allrightsreserved |
author2 |
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 (LOG) Centre National de la Recherche Scientifique (CNRS)-Université du Littoral Côte d'Opale (ULCO)-Université de Lille-Institut national des sciences de l'Univers (INSU - CNRS) |
format |
Article in Journal/Newspaper |
author |
Seuront, Laurent Leterme, Sc Seymour, Js Mitchell, Jg. Ashcroft, D. Noble, W. Thompson, Pg Davidson, At Van Den Enden, R. Scott, Fj Wright, Sw Chapperon, C. Cribb, N. |
author_facet |
Seuront, Laurent Leterme, Sc Seymour, Js Mitchell, Jg. Ashcroft, D. Noble, W. Thompson, Pg Davidson, At Van Den Enden, R. Scott, Fj Wright, Sw Chapperon, C. Cribb, N. |
author_sort |
Seuront, Laurent |
title |
Role of microbial and phytoplanktonic communities in the control of seawater viscosity off West Antarctica (30-80°W). |
title_short |
Role of microbial and phytoplanktonic communities in the control of seawater viscosity off West Antarctica (30-80°W). |
title_full |
Role of microbial and phytoplanktonic communities in the control of seawater viscosity off West Antarctica (30-80°W). |
title_fullStr |
Role of microbial and phytoplanktonic communities in the control of seawater viscosity off West Antarctica (30-80°W). |
title_full_unstemmed |
Role of microbial and phytoplanktonic communities in the control of seawater viscosity off West Antarctica (30-80°W). |
title_sort |
role of microbial and phytoplanktonic communities in the control of seawater viscosity off west antarctica (30-80°w). |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://hal.archives-ouvertes.fr/hal-00767876 https://doi.org/10.1016/j.dsr2.2008.09.018 |
geographic |
West Antarctica |
geographic_facet |
West Antarctica |
genre |
Antarc* Antarctica West Antarctica |
genre_facet |
Antarc* Antarctica West Antarctica |
op_source |
ISSN: 0146-6291 Deep Sea Research https://hal.archives-ouvertes.fr/hal-00767876 Deep Sea Research, Elsevier, 2010, 57, pp.877-886. ⟨10.1016/j.dsr2.2008.09.018⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.dsr2.2008.09.018 hal-00767876 https://hal.archives-ouvertes.fr/hal-00767876 doi:10.1016/j.dsr2.2008.09.018 |
op_doi |
https://doi.org/10.1016/j.dsr2.2008.09.018 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
57 |
container_issue |
9-10 |
container_start_page |
877 |
op_container_end_page |
886 |
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1766247576428871680 |