Structure of Benthic Microbial Communities in the Northeastern Part of the Barents Sea
The Barents Sea shelf is one of the most economically promising regions in the Arctic in terms of its resources and geographic location. However, benthic microbial communities of the northeastern Barents Sea are still barely studied. Here, we present a detailed systematic description of the structur...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-02-01
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| Series: | Microorganisms |
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| Online Access: | https://www.mdpi.com/2076-2607/12/2/387 |
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| author | Aleksandra R. Stroeva Alexandra A. Klyukina Olesya N. Vidishcheva Elena N. Poludetkina Marina A. Solovyeva Vladislav O. Pyrkin Liliya A. Gavirova Nils-Kåre Birkeland Grigorii G. Akhmanov Elizaveta A. Bonch-Osmolovskaya Alexander Y. Merkel |
| author_facet | Aleksandra R. Stroeva Alexandra A. Klyukina Olesya N. Vidishcheva Elena N. Poludetkina Marina A. Solovyeva Vladislav O. Pyrkin Liliya A. Gavirova Nils-Kåre Birkeland Grigorii G. Akhmanov Elizaveta A. Bonch-Osmolovskaya Alexander Y. Merkel |
| author_sort | Aleksandra R. Stroeva |
| collection | DOAJ |
| description | The Barents Sea shelf is one of the most economically promising regions in the Arctic in terms of its resources and geographic location. However, benthic microbial communities of the northeastern Barents Sea are still barely studied. Here, we present a detailed systematic description of the structures of microbial communities located in the sediments and bottom water of the northeastern Barents Sea based on 16S rRNA profiling and a qPCR assessment of the total prokaryotic abundance in 177 samples. Beta- and alpha-diversity analyses revealed a clear difference between the microbial communities of diverse sediment layers and bottom-water fractions. We identified 101 microbial taxa whose representatives had statistically reliable distribution patterns between these ecotopes. Analysis of the correlation between microbial community structure and geological data yielded a number of important results—correlations were found between the abundance of individual microbial taxa and bottom relief, thickness of marine sediments, presence of hydrotrolite interlayers, and the values of pH and Eh. We also demonstrated that a relatively high abundance of prokaryotes in sediments can be caused by the proliferation of <i>Deltaproteobacteria</i> representatives, in particular, sulfate and iron reducers. |
| first_indexed | 2024-03-07T22:20:41Z |
| format | Article |
| id | doaj.art-3fb73e6d5c76437ca68cd38143ea08b2 |
| institution | Directory Open Access Journal |
| issn | 2076-2607 |
| language | English |
| last_indexed | 2024-03-07T22:20:41Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Microorganisms |
| spelling | doaj.art-3fb73e6d5c76437ca68cd38143ea08b22024-02-23T15:28:24ZengMDPI AGMicroorganisms2076-26072024-02-0112238710.3390/microorganisms12020387Structure of Benthic Microbial Communities in the Northeastern Part of the Barents SeaAleksandra R. Stroeva0Alexandra A. Klyukina1Olesya N. Vidishcheva2Elena N. Poludetkina3Marina A. Solovyeva4Vladislav O. Pyrkin5Liliya A. Gavirova6Nils-Kåre Birkeland7Grigorii G. Akhmanov8Elizaveta A. Bonch-Osmolovskaya9Alexander Y. Merkel10Lomonosov Moscow State University, 119234 Moscow, RussiaWinogradsky Institute of Microbiology, Research Center of Biotechnology, Russian Academy of Sciences, 119071 Moscow, RussiaLomonosov Moscow State University, 119234 Moscow, RussiaLomonosov Moscow State University, 119234 Moscow, RussiaLomonosov Moscow State University, 119234 Moscow, RussiaLomonosov Moscow State University, 119234 Moscow, RussiaLomonosov Moscow State University, 119234 Moscow, RussiaDepartment of Biological Sciences, University of Bergen, P.O. Box 7803, NO-5020 Bergen, NorwayLomonosov Moscow State University, 119234 Moscow, RussiaLomonosov Moscow State University, 119234 Moscow, RussiaLomonosov Moscow State University, 119234 Moscow, RussiaThe Barents Sea shelf is one of the most economically promising regions in the Arctic in terms of its resources and geographic location. However, benthic microbial communities of the northeastern Barents Sea are still barely studied. Here, we present a detailed systematic description of the structures of microbial communities located in the sediments and bottom water of the northeastern Barents Sea based on 16S rRNA profiling and a qPCR assessment of the total prokaryotic abundance in 177 samples. Beta- and alpha-diversity analyses revealed a clear difference between the microbial communities of diverse sediment layers and bottom-water fractions. We identified 101 microbial taxa whose representatives had statistically reliable distribution patterns between these ecotopes. Analysis of the correlation between microbial community structure and geological data yielded a number of important results—correlations were found between the abundance of individual microbial taxa and bottom relief, thickness of marine sediments, presence of hydrotrolite interlayers, and the values of pH and Eh. We also demonstrated that a relatively high abundance of prokaryotes in sediments can be caused by the proliferation of <i>Deltaproteobacteria</i> representatives, in particular, sulfate and iron reducers.https://www.mdpi.com/2076-2607/12/2/387the Barents Seamicrobial ecologymicrobial community structure16S rRNA profilingbenthic microbial communitiesstatistical analysis |
| spellingShingle | Aleksandra R. Stroeva Alexandra A. Klyukina Olesya N. Vidishcheva Elena N. Poludetkina Marina A. Solovyeva Vladislav O. Pyrkin Liliya A. Gavirova Nils-Kåre Birkeland Grigorii G. Akhmanov Elizaveta A. Bonch-Osmolovskaya Alexander Y. Merkel Structure of Benthic Microbial Communities in the Northeastern Part of the Barents Sea Microorganisms the Barents Sea microbial ecology microbial community structure 16S rRNA profiling benthic microbial communities statistical analysis |
| title | Structure of Benthic Microbial Communities in the Northeastern Part of the Barents Sea |
| title_full | Structure of Benthic Microbial Communities in the Northeastern Part of the Barents Sea |
| title_fullStr | Structure of Benthic Microbial Communities in the Northeastern Part of the Barents Sea |
| title_full_unstemmed | Structure of Benthic Microbial Communities in the Northeastern Part of the Barents Sea |
| title_short | Structure of Benthic Microbial Communities in the Northeastern Part of the Barents Sea |
| title_sort | structure of benthic microbial communities in the northeastern part of the barents sea |
| topic | the Barents Sea microbial ecology microbial community structure 16S rRNA profiling benthic microbial communities statistical analysis |
| url | https://www.mdpi.com/2076-2607/12/2/387 |
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