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Seasonal and zonal succession of bacterial communities in North Sea salt marsh sediments
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Tebbe, Dennis Alexander, Geihser, Simone, Wemheuer, Bernd, Daniel, Rolf, Schäfer, Hendrik and Engelen, Bert (2022) Seasonal and zonal succession of bacterial communities in North Sea salt marsh sediments. Microorganisms, 10 (5). e859. doi:10.3390/microorganisms10050859
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Official URL: https://doi.org/10.3390/microorganisms10050859
Abstract
Benthic microbial communities of intertidal zones perform important biogeochemical processes and provide accessible nutrients for higher organisms. To unravel the ecosystem services of salt marsh microbial communities, we analyzed bacterial diversity and metabolic potential along the land−sea transition zone on seasonal scales on the German North Sea Island of Spiekeroog. Analysis of bacterial community was based on amplicon sequencing of 16S rRNA genes and −transcripts. Insights into potential community function were obtained by applying the gene prediction tool tax4fun2. We found that spatial variation of community composition was greater than seasonal variations. Alphaproteobacteria (15%), Gammaproteobacteria (17%) and Planctomycetes (11%) were the most abundant phyla across all samples. Differences between the DNA-based resident and RNA-based active communities were most pronounced within the Planctomycetes (17% and 5%) and Cyanobacteriia (3% and 12%). Seasonal differences were seen in higher abundance of Gammaproteobacteria in March 2015 (25%) and a cyanobacterial summer bloom, accounting for up to 70% of the active community. Taxonomy-based prediction of function showed increasing potentials for nitrification, assimilatory nitrate and sulfate reduction from sea to land, while the denitrification and dissimilatory sulfate reduction increased towards the sea. In conclusion, seasonal differences mainly occurred by blooming of individual taxa, while the overall community composition strongly corresponded to locations. Shifts in their metabolism could drive the salt marsh’s function, e.g., as a potential nitrogen sink.
| Item Type: | Journal Article | ||||||
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| Subjects: | Q Science > QH Natural history > QH301 Biology | ||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||||
| SWORD Depositor: | Library Publications Router | ||||||
| Library of Congress Subject Headings (LCSH): | Salt marsh ecology, Wetland ecology, Coastal ecology, Marine bacteria -- Research, Marine microbial ecology | ||||||
| Journal or Publication Title: | Microorganisms | ||||||
| Publisher: | MDPI | ||||||
| ISSN: | 2076-2607 | ||||||
| Official Date: | 21 April 2022 | ||||||
| Dates: |
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| Volume: | 10 | ||||||
| Number: | 5 | ||||||
| Article Number: | e859 | ||||||
| DOI: | 10.3390/microorganisms10050859 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Open Access | ||||||
| RIOXX Funder/Project Grant: |
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