Abundance and activity of major groups of prokaryotic plankton in the coastal North Sea during spring and summer

Author(s)
Anne Carlijn Alderkamp, Eva Sintes, Gerhard J. Herndl
Abstract

The dynamics of the abundance and activity of selected heterotrophic prokaryotic groups were determined in the coastal North Sea during a coastal spring bloom dominated by the prymnesiophyte Phaeocystis globosa and in the subsequent spring and summer season using catalyzed reporter deposition-fluorescence in situ hybridization combined with microautoradiography (MICRO-CARD-FISH). Both Crenarchea and Euryarchaea were detected throughout the study period, albeit never at levels that exceeded 2% of the total prokaryotic abundance, corresponding to a maximum abundance of 2.8 × 108 Archaea l-1. Euryarchaea were generally more abundant than Crenarchaea. On average, 21% of the Crenarchaea and 35% of the Euryarchaea were taking up leucine throughout the study period. Members of the Bacteroidetes were abundant during the P. globosa bloom period. At the senescent stage of the bloom, Bacteroidetes comprised up to 63% of the prokaryotic community. The abundances of members of the Roseobacter clade as well as the SAR86 cluster were low during the phytoplankton spring bloom period (mean 2% each), but increased during August. On average, 51% of the Roseobacter, 38% of the Bacteroidetes and 39% of the SAR86 cluster were taking up leucine. The percentages of active Bacteria increased during the decline of the P. globosa spring bloom. The Bacteroidetes cluster showed the strongest increase, indicating that members of this cluster are likely to play a major role in the degradation of organic matter produced in the P. globosa spring bloom.

Organisation(s)
External organisation(s)
University of Groningen, Royal Netherlands Institute for Sea Research
Journal
Aquatic Microbial Ecology
Volume
45
Pages
237-246
No. of pages
10
ISSN
0948-3055
DOI
https://doi.org/10.3354/ame045237
Publication date
12-2006
Peer reviewed
Yes
Austrian Fields of Science 2012
106022 Microbiology
Keywords
ASJC Scopus subject areas
Ecology, Evolution, Behavior and Systematics, Aquatic Science
Sustainable Development Goals
SDG 14 - Life Below Water
Portal url
https://ucris.univie.ac.at/portal/en/publications/abundance-and-activity-of-major-groups-of-prokaryotic-plankton-in-the-coastal-north-sea-during-spring-and-summer(4d9c0ddf-06b9-4bd7-9ebe-5e53397175ff).html