Table 1.

Number and elevation of forest plots with species cover abundance data for the 12 studied tree species. The minimum and maximum elevation of all studied 1,060 mature forest stands across Switzerland was 240 and 2,200 m a.s.l., respectively

Species	Number of plots where present	Elevation (m a.s.l.) where present			Cover abundance (%) where present
		Minimum	Mean	Maximum	Mean	Maximum
Picea abies	684	280	1,005	2,040	33	88
Abies alba	410	390	854	1,540	25	88
Pinus sylvestris	168	310	820	1,980	24	88
Fagus sylvatica	621	340	728	1,490	46	88
Fraxinus excelsior	206	240	613	1,360	19	63
Acer peseudoplatanus	200	290	811	1,600	17	88
Ulmus glabra	61	410	742	1,360	10	63
Prunus avium	39	240	515	820	6	38
Quercus robur	66	240	528	950	15	63
Quercus petraea	97	320	604	1,360	17	88
Quercus pubescens	41	330	727	1,360	31	88
Carpinus betulus	40	370	506	710	19	88