Table 2. Primer sequence information applied in this study; archaeal primers have been chosen based on a preselection of Fischer et al. (2016) suitable for next generation sequencing.

The original citation for each respective primer is shown.

Pair	Name	Oligonucleotide sequence (5′-3′)	Reference
Prok	515F	GTGCCAGCMGCCGCGGTAA	Caporaso et al. (2011)
	806R	GGACTACHVGGGTWTCTAAT	Caporaso et al. (2011)
V34	Arch-0349F	GYGCASCAGKCGMGAAW	Takai & Horikoshi (2000)
	Arch-0806R	GGACTACVSGGGTATCTAAT	Takai & Horikoshi (2000)
V46	Arch-0519F	CAGCMGCCGCGGTAA	Ovreas et al. (1997)
	Arch-1041R	GGCCATGCACCWCCTCTC	Baker, Smith & Cowan (2003)
V56	Arch-0787F	ATTAGATACCCSBGTAGTCC	Yu et al. (2005)
	Arch-1043R	GCCATGCACCWCCTCT	Yu et al. (2005)