1887

Abstract

Understanding distribution patterns at various spatial scales is a central issue in microbial ecology. Beyond the lone identification of biogeographical patterns, understanding the environmental drivers behind community diversity and structure is key. While many studies identify pH as a major parameter structuring microbial communities at large spatial scales, many other variables impact distribution patterns on smaller scales. Here, we investigated the biogeographical patterns of Arctic soil microbial communities from 1 m to 500 m, within Adventdalen, Svalbard, using 16S sequencing, gravimetric measurements and X-ray fluorescence. Multivariate analyses identified key environmental variables shaping microbial communities and revealed the importance of soil moisture, organic carbon and elements such as aluminium, calcium and potassium in structuring distribution patterns. The indicator species analyses identified key associations between environmental variables and OTUs. Using geostatistical kriging, we mapped the biodiversity and distribution of key OTUs across the landscape. Overall, our results highlight the spatial heterogeneity in Arctic soils and identifies the sampling scale needed to characterize microbial communities within an area of interest with seemingly homogeneous landscape.

Loading

Article metrics loading...

/content/journal/acmi/10.1099/acmi.ac2019.po0330
2019-04-08
2019-10-15
Loading full text...

Full text loading...

http://instance.metastore.ingenta.com/content/journal/acmi/10.1099/acmi.ac2019.po0330
Loading
This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error