Bacterioplankton dynamics driven by interannual and spatial variation in diatom and dinoflagellate spring bloom communities in the Baltic Sea

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Camarena-Gomez , M T , Ruiz-Gonzalez , C , Piiparinen , J , Lipsewers , T , Sobrino , C , Logares , R & Spilling , K 2021 , ' Bacterioplankton dynamics driven by interannual and spatial variation in diatom and dinoflagellate spring bloom communities in the Baltic Sea ' , Limnology and Oceanography , vol. 66 , no. 1 , pp. 255-271 . https://doi.org/10.1002/lno.11601

Title: Bacterioplankton dynamics driven by interannual and spatial variation in diatom and dinoflagellate spring bloom communities in the Baltic Sea
Author: Camarena-Gomez, Maria Teresa; Ruiz-Gonzalez, Clara; Piiparinen, Jonna; Lipsewers, Tobias; Sobrino, Cristina; Logares, Ramiro; Spilling, Kristian
Contributor organization: Tvärminne Zoological Station
Date: 2021-01
Language: eng
Number of pages: 17
Belongs to series: Limnology and Oceanography
ISSN: 0024-3590
DOI: https://doi.org/10.1002/lno.11601
URI: http://hdl.handle.net/10138/341315
Abstract: In parts of the Baltic Sea, the phytoplankton spring bloom communities, commonly dominated by diatoms, are shifting toward the co-occurrence of diatoms and dinoflagellates. Although phytoplankton are known to shape the composition and function of associated bacterioplankton communities, the potential bacterial responses to such a decrease of diatoms are unknown. Here we explored the changes in bacterial communities and heterotrophic production during the spring bloom in four consecutive spring blooms across several sub-basins of the Baltic Sea and related them to changes in environmental variables and in phytoplankton community structure. The taxonomic structure of bacterioplankton assemblages was partially explained by salinity and temperature but also linked to the phytoplankton community. Higher carbon biomass of the diatomsAchnanthes taeniata,Skeletonema marinoi,Thalassiosira levanderi, andChaetocerosspp. was associated with more diverse bacterial communities dominated by copiotrophic bacteria (Flavobacteriia, Gammaproteobacteria, and Betaproteobacteria) and higher bacterial production. During dinoflagellate dominance, bacterial production was low and bacterial communities were dominated by Alphaproteobacteria, mainly SAR11. Our results suggest that increases in dinoflagellate abundance during the spring bloom will largely affect the structuring and functioning of the associated bacterial communities. This could decrease pelagic remineralization of organic matter and possibly affect the bacterial grazers communities.
Subject: DISSOLVED ORGANIC-CARBON
BACTERIAL PRODUCTION
PHYTOPLANKTON
GROWTH
PRODUCTIVITY
POPULATIONS
CRENOTHRIX
SUCCESSION
LIMITATION
ABUNDANCE
1181 Ecology, evolutionary biology
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion


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