The Botany of Iceland - 01.12.1930, Page 37

The Botany of Iceland - 01.12.1930, Page 37
STUDIES ON THE VEGETATION OF ICELAND 27 Table 4. Distribution of the Species Groups in Northern Europe and the Arctic Regions. n A E A3 A2 A1 E4 E3 E2 E1 Ellesmereland 55 45 10 43 ‘2 10 » » » Nortli Greenland 76°-83°—7fi° 66 51 15 51 » » 15 » » » Spitsbergen 53 43 10 43 » » 10 » » » West Greenland 66°—76° 170 111 59 55 50 6 57 2 » » East Greenland 60°—76° 177 117 60 53 46 18 44 15 » 1 Novaia Zemlia 72 51 21 36 12 3 17 2 2 » South-West Greenland 60°—66° 228 121 107 50 49 22 53 53 1 » Iceland 375 151 224 55 51 45 57 53 53 61 The Faeroes 219 73 146 27 21 25 45 38 29 34 Norway 367 144 223 54 50 40 57 52 53 61 Sweden 363 141 222 52 49 40 57 51 53 61 Finland 344 132 212 52 45 35 57 50 53 52 Scotland 304 86 218 28 32 20 56 50 52 60 Iceland 243 36 207 14 8 14 52 49 48 58 England 231 20 211 8 5 7 53 49 51 58 Denmark 238 17 221 5 2 10 57 51 53 60 The Baltic States 231 20 211 6 5 9 53 50 53 55 North-East Germany 231 15 216 3 3 9 55 50 53 58 In the countries nortli of Iceland it is especially the A species which constitute the greater part of the coinmon species, and the farther north \ve go, the more numerous are the A 3 species. In the countries south of Iceland the reverse is the case; here comparatively the greatest number of the common species belongs to the E groups. In Scandinavia and Finland the proportion of the A groups to the E groups is approximately as in Iceland. The table shows the distribution of the species groups illustrated exclusively by the quantitative relation of tlie species to each other. The facts relating to the distribution would, however, appear much more distinctly if the frequency of the species in the separate coun- tries were taken into account, and a classification were worked out for Scandinavia. II. The Distribution of the Species Groups in Iceland. Below in table 5 the quantitative relation between the species groups has been calculated in per cent partly of the number of
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