Table 1.

Selected literature reports on pH optima of Sphagnum warnstorfii from different regions, illustrating its wide pH niche and its tolerance to rather high pH values

Region	pH min.	pH opt.	pH max.
Northern Minnesota (Vitt and Slack 1984)	n/a	7.4	n/a
Schwarzwald (Dierssen and Dierssen 1984)	4.2	4.9	5.5
Canada (Andrus 1986)	4.0	6.2	7.5
Maine, Northern America (Anderson et al. 1995)	n/a	8.3	n/a
Western Italian Alps (Miserere et al. 2003)	n/a	5.4	n/a
Central Europe (Hájek et al. 2006)	5.8	n/a	6.9
Bulgaria (Hájková and Hájek 2007)*	4.3	5.4	6.1
Poland, Sudety Mts. (Wojtuń et al. 2013)	n/a	5.4	n/a
Western Carpathians (Z. Plesková et al., unpubl. data)	3.8	6.0	7.6
Bohemian Massif (Z. Plesková et al., unpubl. data)	3.7	6.2	7.6

pH min/pH max, minimal pH/maximal pH; pH opt., pH optimum (highest peak of the species response curve, mean value or median value; the methodology differed among studies).

^*Minimum, maximum, and median were recalculated from the original dataset.