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- W2009401064 abstract "AME Aquatic Microbial Ecology Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsSpecials AME 58:95-107 (2009) - DOI: https://doi.org/10.3354/ame01359 Temporal changes of major bacterial groups and bacterial heterotrophic activity during a Phaeocystis globosa bloom in the eastern English Channel D. Lamy1,4,5,*, I. Obernosterer2,3, M. Laghdass1,2,3, L. F. Artigas1, E. Breton1, J. D. Grattepanche1, E. Lecuyer1, N. Degros1, P. Lebaron2,3, U. Christaki1 1Univ Lille Nord de France, ULCO, LOG, 32. Av. Foch and CNRS, UMR 8187, 62930 Wimereux, France 2UPMC Univ Paris 06, UMR 7621, LOBB, Observatoire Océanologique, 66651 Banyuls-sur-Mer, France 3CNRS, UMR 7621, LOBB, Observatoire Océanologique, 66651, Banyuls-sur-Mer, France 4Present address: Department of Biological Oceanography, Royal Netherlands Institute for Sea Research, PO Box 59, 1790 AB, Den Burg, Texel, The Netherlands 5Present address: Department of Marine Biology, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria *Email: lamyd2@univie.ac.at ABSTRACT: The temporal changes in major bacterial groups and bulk heterotrophic activity were determined during the growth, senescence and post-bloom phases of a Phaeocystis globosa bloom, at a coastal site in the eastern English Channel. Cell-specific exoenzymatic activities were highest during the growth period of P. globosa, while bacterial abundance and bacterial heterotrophic production peaked during the senescence of the P. globosa bloom. Bacteroidetes and Gammaproteobacteria were the most important bacterial groups during the growth period of P. globosa, contributing between 13 and 47% of bulk bacterial abundance and leucine incorporation. At the end of the phytoplankton growth period, Gammaproteobacteria were the most important contributors to bacterial heterotrophic production, accounting for 68% of bulk leucine incorporation. During the senescent phase, 36 and 29% of bulk leucine incorporation were attributable to Bacteroidetes and Alphaproteobacteria, respectively. Finally, after the disappearance of the bloom, Gamma- and Alphaproteobacteria dominated by the Roseobacter clade were responsible for 33 and 43% of bulk leucine incorporation, respectively. The relative abundance of the bacterial groups showed little variability between consecutive dates during most of the study period. The contributions of different bacterial groups to bulk abundance and leucine incorporation were correlated with exo-proteolytic and -glucosidic activities and with particulate organic carbon, suggesting at least some specificity of these bacterial groups with respect to their metabolic properties in the environment. KEY WORDS: Bacterial succession · MICRO-FISH · Bacterial activity · Phaeocystis globosa · Eastern English Channel · SOMLIT Full text in pdf format PreviousCite this article as: Lamy D, Obernosterer I, Laghdass M, Artigas F and others (2009) Temporal changes of major bacterial groups and bacterial heterotrophic activity during a Phaeocystis globosa bloom in the eastern English Channel. Aquat Microb Ecol 58:95-107. https://doi.org/10.3354/ame01359 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in AME Vol. 58, No. 1. Online publication date: December 08, 2009 Print ISSN: 0948-3055; Online ISSN: 1616-1564 Copyright © 2009 Inter-Research." @default.
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- W2009401064 title "Temporal changes of major bacterial groups and bacterial heterotrophic activity during a Phaeocystis globosa bloom in the eastern English Channel" @default.
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