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Disentangling seasonal bacterioplankton population dynamics by high-frequency sampling
Linnéuniversitetet, Institutionen för biologi och miljö (BOM). (EcoChange)ORCID iD: 0000-0002-7120-4145
Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
KTH Royal Inst Technol, Sweden.
Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
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2015 (English)In: Environmental Microbiology, ISSN 1462-2912, E-ISSN 1462-2920, Vol. 17, no 7, p. 2459-2476Article in journal (Refereed) Published
Abstract [en]

Multiyear comparisons of bacterioplankton succession reveal that environmental conditions drive community shifts with repeatable patterns between years. However, corresponding insight into bacterioplankton dynamics at a temporal resolution relevant for detailed examination of variation and characteristics of specific populations within years is essentially lacking. During 1 year, we collected 46 samples in the Baltic Sea for assessing bacterial community composition by 16S rRNA gene pyrosequencing (nearly twice weekly during productive season). Beta-diversity analysis showed distinct clustering of samples, attributable to seemingly synchronous temporal transitions among populations (populations defined by 97% 16S rRNA gene sequence identity). A wide spectrum of bacterioplankton dynamics was evident, where divergent temporal patterns resulted both from pronounced differences in relative abundance and presence/absence of populations. Rates of change in relative abundance calculated for individual populations ranged from 0.23 to 1.79 day(-1). Populations that were persistently dominant, transiently abundant or generally rare were found in several major bacterial groups, implying evolution has favoured a similar variety of life strategies within these groups. These findings suggest that high temporal resolution sampling allows constraining the timescales and frequencies at which distinct populations transition between being abundant or rare, thus potentially providing clues about physical, chemical or biological forcing on bacterioplankton community structure.

Place, publisher, year, edition, pages
Society for Applied Microbiology and John Wiley & Sons Ltd , 2015. Vol. 17, no 7, p. 2459-2476
National Category
Ecology
Research subject
Ecology, Aquatic Ecology
Identifiers
URN: urn:nbn:se:umu:diva-139356DOI: 10.1111/1462-2920.12720ISI: 000358114300023OAI: oai:DiVA.org:umu-139356DiVA, id: diva2:1140238
Funder
Swedish Research Council FormasSwedish Research CouncilEcosystem dynamics in the Baltic Sea in a changing climate perspective - ECOCHANGEAvailable from: 2015-07-25 Created: 2017-09-11 Last updated: 2018-06-09

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Lindh, Markus V.Lundin, DanielLegrand, CatherinePinhassi, Jarone

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