Seasonal changes in substrate utilization patterns by bacterioplankton in the Amundsen Gulf (western Arctic)

Seasonal changes in substrate utilization patterns by bacterioplankton in the Amundsen Gulf (western Arctic)

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9 pages, 4 figures, 2 tables

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Main Authors: Fernández-Gómez, Beatriz, Sala, M. Montserrat, Pedrós-Alió, Carlos
Format: artículo biblioteca
Published: Springer 2014-09
Subjects:Biolog, Arctic Ocean, Metabolic diversity, Microbial community, Carbon source, Polynya,
Online Access:http://hdl.handle.net/10261/103116
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spelling dig-icm-es-10261-1031162020-12-09T17:48:02Z Seasonal changes in substrate utilization patterns by bacterioplankton in the Amundsen Gulf (western Arctic) Fernández-Gómez, Beatriz Sala, M. Montserrat Pedrós-Alió, Carlos Biolog Arctic Ocean Metabolic diversity Microbial community Carbon source Polynya 9 pages, 4 figures, 2 tables Due to logistic difficulties, biological processes along the Arctic winter remain poorly known. In particular, carbon sources used by bacterioplankton have not been identified. A previous study in Franklin Bay suggested that polymers were one of the main substrates used by bacteria. During the Circumpolar Flaw Lead System Study, we analyzed metabolic capabilities of the heterotrophic bacterioplankton using Biolog MT2 MicroPlates® amended with custom-selected substrates. Our purpose was to test whether the use of polymers was a peculiarity of Franklin Bay or a robust feature of the Arctic winter community. Seventeen stations were sampled in the Amundsen Gulf (western Arctic), a very dynamic area with heterogeneous ice conditions, from February to July 2008, at the surface (0-12 m), intermediate depths (20-70 m), and near the bottom (200 m). In winter, when nutrients and chlorophyll a concentrations were low, the number of substrates used was close to zero. In early spring, when the levels of chlorophyll a increased, so did the number of substrates used. This was followed by a 1-month period with no substrates used in April and May. Finally, the activity recovered toward the summer. Amino acids were occasionally used. However, the group of substrates most commonly used at all depths was carbohydrates, especially cellobiose, maltose, N-acetyl-d-glucosamine and glycogen. All these are either polymers or monomers derived from polymers. These results confirm that the heterotrophic bacterial assemblage relies heavily on polysaccharides for subsistence during the Arctic winter. © 2014 Springer-Verlag Berlin Heidelberg This work is a contribution to the International Polar Year-Circumpolar Flaw Lead System Study (IPY-CFL 2008) supported through grants from the Canadian IPY Federal Program Office and the National Sciences and Engineering Research Council. The Spanish participation was funded by the Spanish Ministry of Science and Innovation grants BOREAL (CGL2007-28872-E/ANT) and Marine Gems (CTM2010-20361) to C. P.-A Peer Reviewed 2014-10-09T12:06:44Z 2014-10-09T12:06:44Z 2014-09 2014-10-09T12:06:44Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.1007/s00300-014-1523-9 issn: 0722-4060 e-issn: 1432-2056 Polar Biology 37(9): 1321-1329 (2014) http://hdl.handle.net/10261/103116 10.1007/s00300-014-1523-9 https://doi.org/10.1007/s00300-014-1523-9 none Springer
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
topic Biolog
Arctic Ocean
Metabolic diversity
Microbial community
Carbon source
Polynya
Biolog
Arctic Ocean
Metabolic diversity
Microbial community
Carbon source
Polynya
spellingShingle Biolog
Arctic Ocean
Metabolic diversity
Microbial community
Carbon source
Polynya
Biolog
Arctic Ocean
Metabolic diversity
Microbial community
Carbon source
Polynya
Fernández-Gómez, Beatriz
Sala, M. Montserrat
Pedrós-Alió, Carlos
Seasonal changes in substrate utilization patterns by bacterioplankton in the Amundsen Gulf (western Arctic)
description 9 pages, 4 figures, 2 tables
format artículo
topic_facet Biolog
Arctic Ocean
Metabolic diversity
Microbial community
Carbon source
Polynya
author Fernández-Gómez, Beatriz
Sala, M. Montserrat
Pedrós-Alió, Carlos
author_facet Fernández-Gómez, Beatriz
Sala, M. Montserrat
Pedrós-Alió, Carlos
author_sort Fernández-Gómez, Beatriz
title Seasonal changes in substrate utilization patterns by bacterioplankton in the Amundsen Gulf (western Arctic)
title_short Seasonal changes in substrate utilization patterns by bacterioplankton in the Amundsen Gulf (western Arctic)
title_full Seasonal changes in substrate utilization patterns by bacterioplankton in the Amundsen Gulf (western Arctic)
title_fullStr Seasonal changes in substrate utilization patterns by bacterioplankton in the Amundsen Gulf (western Arctic)
title_full_unstemmed Seasonal changes in substrate utilization patterns by bacterioplankton in the Amundsen Gulf (western Arctic)
title_sort seasonal changes in substrate utilization patterns by bacterioplankton in the amundsen gulf (western arctic)
publisher Springer
publishDate 2014-09
url http://hdl.handle.net/10261/103116
work_keys_str_mv AT fernandezgomezbeatriz seasonalchangesinsubstrateutilizationpatternsbybacterioplanktonintheamundsengulfwesternarctic
AT salammontserrat seasonalchangesinsubstrateutilizationpatternsbybacterioplanktonintheamundsengulfwesternarctic
AT pedrosaliocarlos seasonalchangesinsubstrateutilizationpatternsbybacterioplanktonintheamundsengulfwesternarctic
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