Bacterial communities in temperate and polar coastal sands are seasonally stable.
Journal
ISME communications
ISSN: 2730-6151
Titre abrégé: ISME Commun
Pays: England
ID NLM: 9918205372406676
Informations de publication
Date de publication:
28 Jun 2021
28 Jun 2021
Historique:
received:
11
05
2021
accepted:
24
05
2021
revised:
13
05
2021
entrez:
5
2
2023
pubmed:
28
6
2021
medline:
28
6
2021
Statut:
epublish
Résumé
Coastal sands are biocatalytic filters for dissolved and particulate organic matter of marine and terrestrial origin, thus, acting as centers of organic matter transformation. At high temporal resolution, we accessed the variability of benthic bacterial communities over two annual cycles at Helgoland (North Sea), and compared it with seasonality of communities in Isfjorden (Svalbard, 78°N) sediments, where primary production does not occur during winter. Benthic community structure remained stable in both, temperate and polar sediments on the level of cell counts and 16S rRNA-based taxonomy. Actinobacteriota of uncultured Actinomarinales and Microtrichales were a major group, with 8 ± 1% of total reads (Helgoland) and 31 ± 6% (Svalbard). Their high activity (frequency of dividing cells 28%) and in situ cell numbers of >10% of total microbes in Svalbard sediments, suggest Actinomarinales and Microtrichales as key heterotrophs for carbon mineralization. Even though Helgoland and Svalbard sampling sites showed no phytodetritus-driven changes of the benthic bacterial community structure, they harbored significantly different communities (p < 0.0001, r = 0.963). The temporal stability of benthic bacterial communities is in stark contrast to the dynamic succession typical of coastal waters, suggesting that pelagic and benthic bacterial communities respond to phytoplankton productivity very differently.
Identifiants
pubmed: 36739458
doi: 10.1038/s43705-021-00028-w
pii: 10.1038/s43705-021-00028-w
pmc: PMC9723697
doi:
Types de publication
Journal Article
Langues
eng
Pagination
29Subventions
Organisme : Deutsche Forschungsgemeinschaft (German Research Foundation)
ID : EXC-2077-390741603
Informations de copyright
© 2021. The Author(s).
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