Biogeographical region	Very low (area in km2)	Low (area in km2)	Medium (area in km2)	High (area in km2)	Very high (area in km2)	Very low (No of meshes per 1 000 km2)	Low (No of meshes per 1 000 km2)	Medium (No of meshes per 1 000 km2)	High (No of meshes per 1 000 km2)	Very high (No of meshes per 1 000 km2)
Alpine	49195734	10442370	3518233	1251792	473716	75.8	16.1	5.4	1.9	0.7
Anatolian	16532653	15907161	8009882	1415061	193775	39.3	37.8	19.0	3.4	0.5
Arctic	8692502	1452700	248000	28200	8400	83.3	13.9	2.4	0.3	0.1
Atlantic	7488688	11567778	24022774	31544321	10147047	8.8	13.6	28.3	37.2	12.0
Black Sea	6149838	3352074	1384000	627600	126800	52.8	28.8	11.9	5.4	1.1
Boreal	21325638	34777624	25266589	6799237	1178968	23.9	38.9	28.3	7.6	1.3
Continental	7120800	28342970	50613917	43065222	10250412	5.1	20.3	36.3	30.9	7.4
Macaronesian	598300	140900	11900	10800	5200	78.0	18.4	1.6	1.4	0.7
Mediterranean	16123535	45628664	39506857	13622392	3345443	13.6	38.6	33.4	11.5	2.8
Pannonian	454552	6453879	5924180	1618029	384330	3.1	43.5	39.9	10.9	2.6
Steppic	646221	1836483	1079607	122407	20828	17.4	49.6	29.1	3.3	0.6