Seasonal and inter-annual variation in the chlorophyll content of three co-existing Sphagnum species exceeds the effect of solar UV reduction in a subarctic peatland

SpringerPlus

Table 3 Correlation between pH of the substrate and chlorophyll content in the three co-existing Sphagnum species in ambient and experimentally altered temperature and UVB conditions

pH in a treatment	S. balticum		S. jensenii		S. lindbergii
pH in a treatment	Chl a	Chl b	Chl a	Chl b	Chl a	Chl b
Ambient
Spearman’s rho	−.506**	−.535**	−.522**	−.494**	.150	.055
p value	.008	.005	.004	.007	.446	.781
N	26	26	29	29	28	28
Control
Spearman’s rho	−.464*	−.630**	−.607**	−.566**	−.189	−.308
p value	.030	.002	.000	.001	.327	.105
N	22	22	29	29	29	29
–UVB
Spearman’s rho	−.449*	−.594**	−.404*	−.326	.167	.217
p value	.024	.002	.041	.105	.387	.259
N	25	25	26	26	29	29