Parallel assessment of marine autotrophic picoplankton using flow cytometry and chemotaxonomy

Tamm, Marju; Laas, Peeter; Freiberg, Rene; Nõges, Peeter; Nõges, Tiina

doi:10.1016/j.scitotenv.2017.12.234

Cited by 18 publications

(27 citation statements)

References 55 publications

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“…In the Baltic Sea, an estuary-like semi enclosed large brackish water body, picophytoplankton is a key component of the phytoplankton community and its contribution to Chl a, as a proxy for biomass, ranges from 15 to 85% [14][15][16][17][18] . Baltic Sea picophytoplankton consists of the picocyanobacteria Synechococcus and Cyanobium and PPE.…”

Section: Introductionmentioning

confidence: 99%

“…Coastal areas in the Baltic Sea are very dynamic and nutrient runoff has been related to increases of Synechococcus abundances 25 but abundance measurements in coastal areas remain scarce. Likewise, the PPE community is thought to be diverse and important in coastal ecosystems but the distribution and abundance of PPE in the Baltic Sea is largely unknown 17,26 .…”

Section: Introductionmentioning

confidence: 99%

“…Synechococcus can be divided into two functional groups based on the presence of the two phycobiliprotein pigments phycoerythrin (PE) and phycocyanin (PC) 17,27,28 . PE-rich Synechococcus (PErich) strains are adapted to blue and green light absorption, and PC-rich Synechococcus (PC-rich) strains adapted to red light absorption.…”

Section: Introductionmentioning

confidence: 99%

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Seasonality of Coastal Picophytoplankton Growth, Nutrient Limitation and Biomass Contribution

Zufia

Farnelid

Legrand

2021

Preprint

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Picophytoplankton in the Baltic Sea includes picocyanobacteria (Synechococcus/Cyanobium) and photosynthetic picoeukaryotes (PPE). Picophytoplankton are thought to be a key component of the phytoplankton community but their seasonal dynamics and relationships with nutrients and temperature are largely unknown. We monitored pico- and larger phytoplankton at a coastal site in Kalmar Sound (K-Station) weekly during 2018. Among the picocyanobacteria, phycoerythrin-rich Synechococcus (PE-rich) dominated in spring and summer while phycocyanin-rich Synechococcus (PC-rich) dominated during autumn. PE-rich and PC-rich abundances peaked during summer (1.1x105 and 2.0x105 cells mL− 1) while PPE reached highest abundances in spring (1.1x105 cells mL− 1). PPE was the main contributor to the total phytoplankton biomass (3–73%). To assess nutrient limitation, bioassays with combinations of nitrogen (NO3 or NH4) and phosphorus additions were performed. PE-rich and PC-rich growth was mainly limited by nitrogen, with a preference for NH4 at 15–19°C. The three groups had distinct seasonal dynamics and optimal temperatures for growth were 10°C and 17–19°C for PE-rich, 13–16°C for PC-rich and 11–15°C for PPE. We conclude that picophytoplankton contribute significantly to the carbon cycle in the coastal Baltic Sea and underscore the importance of investigating functional groups to assess the consequences of the combination of high temperature and NH4 in a future climate.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Seasonality of Coastal Picophytoplankton Growth, Nutrient Limitation and Biomass Contribution

Zufia

Farnelid

Legrand

2021

Preprint

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“…The marine phytoplankton community is a main contributor to primary production and plays important roles in regulating energy export, carrying out more than half of the photosynthetic carbon fixation in euphotic zones (Keller and Riebesell, 1989;Hopcroft and Roff, 2003;Reusch and Boyd, 2013;Bernd et al, 2015;Tamm et al, 2018), and contributing substantially to global climate regulation (Keller and Riebesell, 1989;Reusch and Boyd, 2013). The assembly of certain phytoplankton communities appears to be activated or accelerated by physical, chemical, and biological factors in marine ecosystems (Rilov and Treves, 2010;Reusch and Boyd, 2013;Sunagawa et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Phylogenetic Responses of Marine Free-Living Bacterial Community to Phaeocystis globosa Bloom in Beibu Gulf, China

Zhao

Jiang

et al. 2020

Front. Microbiol.

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Phaeocystis globosa blooms are recognized as playing an essential role in shaping the structure of the marine community and its functions in marine ecosystems. In this study, we observed variation in the alpha diversity and composition of marine free-living bacteria during P. globosa blooms and identified key microbial community assembly patterns during the blooms. The results showed that the Shannon index was higher before the blooming of P. globosa in the subtropical bay. Marinobacterium (γ-proteobacteria), Erythrobacter (α-proteobacteria), and Persicobacter (Cytophagales) were defined as the most important genera, and they were more correlated with environmental factors at the terminal stage of P. globosa blooms. Furthermore, different community assembly processes were observed. Both the mean nearest relatedness index (NRI) and nearest taxon index (NTI) revealed the dominance of deterministic factors in the non-blooming and blooming periods of P. globosa, while the bacterial communities in marine waters after the blooms tended to be controlled by stochastic factors. Our findings revealed that the assembly of the bacterial community in marine P. globosa blooms is a complex process with mixture effects of marine microbiomes and environmental parameters.

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“…Picoeukaryotes are found in marine and freshwater ecosystems and contribute significantly to autotrophic communities (Caron, Countway, Jones, Kim, & Schnetzer, 2012;Tamm, Laas, Freiberg, Nõges, & Nõges, 2018). During the past few years, various molecular techniques have been used to explore the picoeukaryote diversity.…”

Section: Introductionmentioning

confidence: 99%

Picoeukaryotic Diversity and Distribution in the Reservoir Ecological System

Li¹,

Liu²,

Xu³

et al. 2020

Turk. J. Fish. Aquat. Sci.

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The Three Gorges Reservoir of China is a remarkable water conservancy project. It is thus significant to study the dynamics of the reservoir ecological system and plankton distribution. In this study, we used Sanger-based sequencing of the clone libraries of the 18S rRNA gene to analyze the picoeukaryotic diversity (size class 0.7-5 μm) from two sampling sites along the Three Gorges Reservoir during the four seasons in 2013. The community investigated by our approach was dominated by three main phyla, Cryptophyta (30.88% of clones), Chlorophyta (9.6%), and Bacillariophyta (8.7%). In spring, the parasitic population of chytrids in the reservoir is high and may limit the abundance of diatoms. Moreover, the spatial pattern prevails over temporal variability in picoeukaryotic community structure of the Three Gorges Reservoir. Further analyses show that the spatial differences in community structure are mainly caused by the variability of non-dominant phyla. This leads to the hypothesis that the injection of tributaries will have a certain effect on the plankton community structure of the main stream of the Three Gorges Reservoir.

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Parallel assessment of marine autotrophic picoplankton using flow cytometry and chemotaxonomy

Cited by 18 publications

References 55 publications

Seasonality of Coastal Picophytoplankton Growth, Nutrient Limitation and Biomass Contribution

Seasonality of Coastal Picophytoplankton Growth, Nutrient Limitation and Biomass Contribution

Phylogenetic Responses of Marine Free-Living Bacterial Community to Phaeocystis globosa Bloom in Beibu Gulf, China

Picoeukaryotic Diversity and Distribution in the Reservoir Ecological System

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