Trends and Driving Forces of Cyanobacterial Blooms in Russia in the 20th and Early 21st Centuries

Melnikova, Anna; Комова, А. В.; Намсараев, З. Б.

doi:10.1134/s0026261722101027

Cited by 2 publications

(1 citation statement)

References 48 publications

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“…Meanwhile, satellite observations show a 57% increase in primary production in the Arctic Ocean between 1998 and 2018, leading to increased vertical carbon transport in the ocean [15]. Changes in the ratios of different taxonomic groups of microscopic eukaryotes, archaea and bacteria, as well as changes in the distribution ranges and habitats of fish and mammals have been reported [16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Biogeographic Analysis Suggests Two Types of Planktonic Prokaryote Communities in the Barents Sea

Namsaraev,

Kozlova,

Tuzov

et al. 2023

Biology

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The Barents Sea is one of the most rapidly changing Arctic regions, with an unprecedented sea ice decline and increase in water temperature and salinity. We have studied the diversity of prokaryotic communities using 16S metabarcoding in the western and northeastern parts of the Barents Sea along the Kola Section and the section from Novaya Zemlya to Franz Joseph Land. The hypothesis-independent clustering method revealed the existence of two distinct types of communities. The most common prokaryotic taxa were shared between two types of communities, but their relative abundance was different. It was found that the geographic location of the sampling sites explained more than 30% of the difference between communities, while no statistically significant correlation between environmental parameters and community composition was found. The representatives of the Psychrobacter, Sulfitobacter and Polaribacter genera were dominant in samples from both types of communities. The first type of community was also dominated by members of Halomonas, Pseudoalteromonas, Planococcaceae and an unclassified representative of the Alteromonadaceae family. The second type of community also had a significant proportion of Nitrincolaceae, SAR92, SAR11 Clade I, NS9, Cryomorphaceae and SUP05 representatives. The origin of these communities can be explained by the influence of environmental factors or by the different origins of water masses. This research highlights the importance of studying biogeographic patterns in the Barents Sea in comparison with those in the North Atlantic and Arctic Ocean prokaryote communities.

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Section: Introductionmentioning

confidence: 99%

Biogeographic Analysis Suggests Two Types of Planktonic Prokaryote Communities in the Barents Sea

Namsaraev,

Kozlova,

Tuzov

et al. 2023

Biology

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Taxonomic diversity of the dominant cyanobacteria species during blooms in water bodies of Russia

Намсараев

Melnikova

2022

Issues of Modern Algology (Вопросы Современной Альгологии)

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An analysis of information about the dominant cyanobacteria taxa during cyanobacterial blooms in the largest water bodies of Russia during the summer period was carried out. As a result, 32 species of cyanobacteria belonging to 17 genera were shown to be among the dominant species in inland water bodies. Of these, Aphanizomenon flos-aquae, Microcystis aeruginosa, Dolichospermum flos-aquae and Dolichospermum lemmermannii were the most frequently encountered taxa during blooms. In marine systems, representatives of 12 species belonging to 9 genera were observed. Among them Aphanizomenon flos-aquae, Trichormus variabilis, Dolichospermum flos-aquae, Microcystis aeruginosa and Nodularia spumigena were the most common. It is noted that Aphanizomenon flos-aquae, Microcystis aeruginosa and Dolichospermum flos-aquae have the widest distribution over the territory of Russia and are found both in water bodies of the Arctic zone of the Russian Federation and the south of the country, as well as in the distributed parts of coastal seas, while Dolichospermum lemmermannii is more typical of water bodies located in regions with subarctic or boreal climate, and is not found as a dominant in regions with temperate climate.

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Trends and Driving Forces of Cyanobacterial Blooms in Russia in the 20th and Early 21st Centuries

Cited by 2 publications

References 48 publications

Biogeographic Analysis Suggests Two Types of Planktonic Prokaryote Communities in the Barents Sea

Biogeographic Analysis Suggests Two Types of Planktonic Prokaryote Communities in the Barents Sea

Taxonomic diversity of the dominant cyanobacteria species during blooms in water bodies of Russia

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