Open Research
The data supplement to this work is accessible at
https://public.yoda.uu.nl/geo/UU01/I32Z95.html, DOI:
10.24416/UU01-I32Z95. The
geological map of Iceland was created using ArcGIS 10.8.1 and data at
the Iceland GeoSurvey (Hjartarson & Sæmundsson, 2014), available at
(https://en.isor.is/geological-maps-geological-web-map)
and
(https://arcgisserver.isor.is/).
Figures were created with Prism software available athttps://www.graphpad.com/scientific-software/prism/,
and Krona (Ondov et al., 2011), available athttps://github.com/marbl/Krona/releases.
The raw DNA sequences were processed with the R package DADA2 (version
1.18.0) (Callahan, McMurdie, et al., 2016). DNA sequencing data was
obtained using the Silva_132 database (Quast et al., 2013), available
at https://www.arb-silva.de/,
and the RDP naïve Bayesian classifier (Wang et al., 2007).