Greinar (Vísindafélag Íslendinga) - 01.01.1935, Blaðsíða 67

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teristic species of the other formations mentioned have
entirely disappeared, but new species have taken their
place. There is some correlation however between circlings
2 and 6 as regards the species, as the intervalbetweenthese
circling-stations is not great, and no. 2 is situated in uncom-
^only moist birch-copse, where even Carex Goodenoughii
has gained a footing in the vegetation. On the other hand
Carex Goodenoughii and Equisetum palustre are domi-
nant in the swamp. It must be counted as Hallamýri,
Equisetum-Carex Goodenoughii-association.
Table II.
Biological spectra from Hlí?5.
1—3 forest undergrowth, 4—5 grassy slopes, 6 swamp,
cf. Table I.
1 2 3 4 5 6
Points sum . . . . 950 1090 1160 970 740 940
Number of species . . 22 29 31 18 18 24
Density of species 9,5 10,9 11,6 9,7 7,4 9,4
A .. 18,9 10,1 15,5 40,2 18,9 23,4
E . 81,0 89,9 84,5 59,8 81,1 76,6
A 3 .... 8,4 3,7 5,2 29,9 14,9 15,9
A 2 1,1 0,9 0,8 2,1 2,7 4,3
A l ... 9,5 10,1 9,5 8,2 1,3 3,2
E 4 17,7 15,6 18,1 20,6 8,1 21,3
E 3 . 36,7 31,0 17,5 36,6 33,0
E 2 . . . . 21,1 25,7 13,8 5,2 16,2 18,1
E 1 .. 12,6 11,9 21,6 16,5 20,2 4,3
Ph .. — 2,1
Ch . . 9,2 11,1 15,5 6,8 5,3
H .. 78,0 84,5 59,8 74,3 44,7
G .. 12,8 3,5 24,7 18,9 38,3
hh .. — — — — 9,6
Th .. — — 0,8 — — —
Table II. shows the biological spectra of these circ-
hngs. It shows both the spectra of Raunkiær’s lifeforms
(Raunkiær, 1907) and H. Mölholm Hansen’s species
5