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  Habitat-dependent composition of bacterial and fungal communities in biological soil crusts from Oman

Abed, R. M. M., Tamm, A., Hassenrueck, C., Al-Rawahi, A. N., Rodriguez-Caballero, E., Fiedler, S., et al. (2019). Habitat-dependent composition of bacterial and fungal communities in biological soil crusts from Oman. Scientific Reports, 9: 6468. doi:10.1038/s41598-019-42911-6.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0003-EC03-0 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-EC04-F
Genre: Journal Article

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 Creators:
Abed, Raeid M. M.1, Author
Tamm, Alexandra2, Author              
Hassenrueck, Christiane1, Author
Al-Rawahi, Ahmed N.1, Author
Rodriguez-Caballero, Emilio2, Author              
Fiedler, Sabine1, Author
Maier, Stephanie3, Author              
Weber, Bettina2, Author              
Affiliations:
1external, ou_persistent22              
2Multiphase Chemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_1826290              
3Terrestrial Palaeoclimates, Max Planck Institute for Chemistry, Max Planck Society, ou_2516691              

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 Abstract: Biological soil crusts (biocrusts) occur within drylands throughout the world, covering ~12% of the global terrestrial soil surface. Their occurrence in the deserts of the Arabian Peninsula has rarely been reported and their spatial distribution, diversity, and microbial composition remained largely unexplored. We investigated biocrusts at six different locations in the coastal and central deserts of Oman. The biocrust types were characterized, and the bacterial and fungal community compositions of biocrusts and uncrusted soils were analysed by amplicon sequencing. The results were interpreted based on the environmental parameters of the different sites. Whereas at lowland sites, mainly cyanobacteria-dominated biocrusts were observed, both cyanobacteria- and lichen-dominated biocrusts occurred at mountain sites. The majority of bacterial sequences (32–83% of total sequences) belonged to Actinobacteria, Cyanobacteria, Alphaproteobacteria, and Bacteroidetes, whereas fungal sequences belonged to Ascomycota, Basidiomycota, and Chytridiomycota (>95%). With biocrust development, a notable increase in cyanobacterial and decrease in actinobacterial proportions was observed for cyanobacteria-dominated crusts. In coastal areas, where salinity is high, biocrusts were replaced by a unique marine mat-like microbial community, dominated by halotolerant taxa. Redundancy analysis revealed a significant contribution of soil texture, cover type, carbon content, and elevation to the variations in bacterial and fungal communities. Multivariate analysis placed microbial communities in significantly separated clusters based on their carbon content, elevation and electrical conductivity. We conclude that Oman hosts a variety of cyanobacteria- and lichen-dominated crusts with their bacterial and fungal communities being largely dictated by soil properties and environmental parameters.

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Language(s): eng - English
 Dates: 2019
 Publication Status: Published online
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Title: Scientific Reports
  Abbreviation : Sci. Rep.
Source Genre: Journal
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Publ. Info: London, UK : Nature Publishing Group
Pages: - Volume / Issue: 9 Sequence Number: 6468 Start / End Page: - Identifier: ISSN: 2045-2322
CoNE: https://pure.mpg.de/cone/journals/resource/2045-2322