Spatial variability of winter bacterioplankton community composition in the Gulf of Finland (the Baltic Sea)

Laas, Peeter; Simm, Jaak; Lips, Inga; Metsis, Madis

doi:10.1016/j.jmarsys.2013.07.016

Cited by 17 publications

(28 citation statements)

References 61 publications

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“…That is also supported by the finding that Verrucomicrobia present in sea ice are closely related to each other (Bowman et al, 2012;Hatam et al, 2014;Bowman, 2015), and that they belong to the subdivision 4, which is a globally abundant group in the oceans (Freitas et al 2012). Actinobacteria, albeit common in freshwater and soil environments (Chu et al 2010;Newton et al 2011), are also present in saline waters (Lauro et al, 2011;Kang et al 2012;Yau et al 2013;Laas et al, 2014) indicating that they may have a role in saline systems as well (Yau et al, 2013). Interestingly, Candidatus Aquiluna includes species that also may have a light harvesting pigment, actinorhodopsin (Sharma et al, 2009).…”

Section: Resultsmentioning

confidence: 61%

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Bacterial communities in Arctic first‐year drift ice during the winter/spring transition

Eronen-Rasimus

Piiparinen

Karkman

et al. 2016

Environ Microbiol Rep

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Horizontal and vertical variability of first-year drift-ice bacterial communities was investigated along a North-South transect in the Fram Strait during the winter/spring transition. Two different developmental stages were captured along the transect based on the prevailing environmental conditions and the differences in bacterial community composition. The differences in the bacterial communities were likely driven by the changes in sea-ice algal biomass (2.6-5.6 fold differences in chl-a concentrations). Copiotrophic genera common in late spring/summer sea ice, such as Polaribacter, Octadecabacter and Glaciecola, dominated the bacterial communities, supporting the conclusion that the increase in the sea-ice algal biomass was possibly reflected in the sea-ice bacterial communities. Of the dominating bacterial genera, Polaribacter seemed to benefit the most from the increase in algal biomass, since they covered approximately 39% of the total community at the southernmost stations with higher (>6 μg l(-1) ) chl-a concentrations and only 9% at the northernmost station with lower chl-a concentrations (<6 μg l(-1) ). The sea-ice bacterial communities also varied between the ice horizons at all three stations and thus we recommend that for future studies multiple ice horizons be sampled to cover the variability in sea-ice bacterial communities in spring.

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Section: Resultsmentioning

confidence: 61%

“…; Yau et al . ; Laas et al ., ) indicating that they may have a role in saline systems as well (Yau et al ., ). Interestingly, Candidatus Aquiluna includes species that also may have a light harvesting pigment, actinorhodopsin (Sharma et al ., ).…”

Section: Resultsmentioning

confidence: 99%

Bacterial communities in Arctic first‐year drift ice during the winter/spring transition

Eronen-Rasimus

Piiparinen

Karkman

et al. 2016

Environ Microbiol Rep

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“…This could be due to the dominance of a few major groups at the surface (86.9% for the top two abundant groups compared with 66.8% at 48 cm), while the large number of minor groups seen at the bottom in 454 data could have been below the detection limit for ARISA. The dominance of a few taxa in bacterial communities is not uncommon (Massana et al ., ; Tyson et al ., ; Zeng et al ., ; Laas et al ., ; Lee et al ., ) however rarely to this extent. The annual extreme freeze thaw process this pond goes through could skew the community towards bacteria that remain metabolically active over winter or those that could rapidly re‐emerge from their inactive states (Foreman et al ., ).…”

Section: Discussionmentioning

confidence: 98%

Characterisation of bacterioplankton communities in the meltwater ponds of Bratina Island, Victoria Land, Antarctica

Archer

McDonald

Herbold

et al. 2014

FEMS Microbiol Ecol

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A unique collection of Antarctic aquatic environments (meltwater ponds) lies in close proximity on the rock and sediment-covered undulating surface of the McMurdo Ice Shelf, near Bratina Island (Victoria Land, Antarctica). During the 2009-10 mid-austral summer, sets of discrete water samples were collected across the vertical geochemical gradients of five meltwater ponds (Egg, P70E, Legin, Salt and Orange) for geochemical and microbial community structure analysis. Bacterial DNA fingerprints (using Automated Ribosomal Intergenic Spacer Analysis) statistically clustered communities within ponds based on anosim (R = 0.766, P = 0.001); however, one highly stratified pond (Egg) had two distinct depth-related bacterial communities (R = 0.975, P = 0.008). 454 pyrosequencing at three depths within Egg also identified phylum level shifts and increased diversity with depth, Bacteroidetes being the dominant phyla in the surface sample and Proteobacteria being dominant in the bottom two depths. best analysis, which attempts to link community structure and the geochemistry of a pond, identified conductivity and pH individually, and to a lesser extent Ag(109) , NO2 and V(51) as dominant influences to the microbial community structure in these ponds. Increasing abundances of major halo-tolerant OTUs across the strong conductivity gradient reinforce it as the primary driver of community structure in this study.

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“…Sulfurimonas species are known chemoautotrophic sulfate reducers typically found in high numbers, up to 25% of total prokaryotic abundance, in chemocline/deeper oxic-anoxic interphase waters (Grote et al, 2012). However, they also have heterotrophic capacities (Grote et al, 2012) and have been found in lower abundance in Baltic Sea surface waters (Laas et al, 2014), indicating a critical life history trait, especially considering that the chemocline disappears or is much disturbed every year. Moreover, most dominant OTUs do not stay abundant but become part of the seed bank of rare taxa at least occasionally, suggesting that even the stable core community is sensitive to some environmental disturbances.…”

Section: Discussionmentioning

confidence: 99%

“…The appearance of the Sulfurimonas and Euryarchaeota OTUs emphasizes the contribution of physical mixing of the water column to seasonal dynamics during winter. However, they also have heterotrophic capacities (Grote et al, 2012) and have been found in lower abundance in Baltic Sea surface waters (Laas et al, 2014), indicating a critical life history trait, especially considering that the chemocline disappears or is much disturbed every year. (Epsilonproteobacteria) and Euryarchaeota OTUs have previously mainly been detected in high abundance in deeper waters and sediments in the Baltic Sea (Labrenz et al, 2010;Shubenkova et al, 2010).…”

mentioning

confidence: 99%

Disentangling seasonal bacterioplankton population dynamics by high‐frequency sampling

Lindh

Sjöstedt

Andersson

et al. 2015

Environmental Microbiology

131

174

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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.

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Spatial variability of winter bacterioplankton community composition in the Gulf of Finland (the Baltic Sea)

Cited by 17 publications

References 61 publications

Bacterial communities in Arctic first‐year drift ice during the winter/spring transition

Bacterial communities in Arctic first‐year drift ice during the winter/spring transition

Characterisation of bacterioplankton communities in the meltwater ponds of Bratina Island, Victoria Land, Antarctica

Disentangling seasonal bacterioplankton population dynamics by high‐frequency sampling

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