The Botany of Iceland - 01.12.1912, Síða 78

64
H.JÓNSSON
Table 3. Red algæ, Brown algæ, Green algæ, Blue-green algæ
collectively.
E. Icel. N. lcel. NW. Icel. sw. Icel. S. Icel.
t g z ~ °/o 1 1 | o 8 ! o/o - a Z « | Number of species °/o SJ V) £ o g 3. Co z w °/o Numbcr of species %
Arctic group 8 7 5 4 3 3 2 1 > >
Subarctic group 1 25 22 24 20 16 17 27 18 12 11
Subarctic group II 38 34 37 30 39 41 44 28 28 26
Boreal arctic group .... 20 18 26 21 16 17 23 15 16 15
Cold-boreal group 20 18 29 ; 24 18 20 53 34 43 39
Warm-boreal group .... 1 c. 1 2 c. 1 2 c. ‘2 6 4 9 9
Total. .. 112 123 94 155 108
Table 4. Red and Brown algæ collectively.
E. Icel. N. Icel. NW. Icel. sw. Icel. S. Icel
Number of species % Number of species % Number of species % Numbcr of species % Number of species »/o
Arctic group 7 9 4 5 2 3 2 2 >
Subarctic group 1 18 23 19 22 13 18 20 17 8 10
Subarctic group II 25 31 24 28 27 37 26 23 17 20
Boreal arctic group .... 13 16 17 19 13 18 16 14 13 15
Cold-boreal group 17 21 21 24 16 22 46 40 38 45
Warm-boreal group .... > > 2 2 2 2 5 4 8 10
Total. . . 80 87 73 115 84
uniformly in the other parts of the coast, and is reduced to 0 in
S. Iceland. In E., N., NW. and SW. Iceland the number of the
species in the subarctic group I is practically identical in propor-
tion to the number of species, taken as a whole, in these parts of
the coast; S. Iceland has a distinctly smaller number, only 10 %.
The subarctic group II is represented most abundantly in NW. Ice-
land; E. and N. Iceland come next; but S. and SW. Iceland have
a considerably lower percentage (about 20 %). The percentage in
the boreal-arctic group is practically identical in all parts of the
coast. The cold-boreal group presents almost the same percentage
in E., N. and NW. Iceland, while the percentage in the group in