Table 2.

Correlation coefficients and signification in standard pairwise regression analysis (SPR) of the environmental factors and the species number

	Log area (log m2)	Log Kira warmth index (log)	Log difference between max. and min. of monthly mean of temperatures (log °C)	Log mean sun hours/year (log h)	Arc‐sin of mean relative humidity (arc‐sin of proportion)	Log mean year rainfall (log mm)	Log driest month rainfall (log mm)	Arc‐sin of cloudiness (arc‐sin of proportion)	Log elevation	Log distance to the nearest site (log km)
Log of species number	0.6534 (P = 0.000)	0.4031 (P = 0.037)	−0.131 (P = 0.514)	0.383 (P = 0.048)	0.129 (P = 0.519)	0.013 (P = 0.948)	−0.181 (P = 0.365)	0.084 (P = 0.675)	0.510 (P = 0.007)	−0.243 (P = 0.222)