Greinar (Vísindafélag Íslendinga) - 01.01.1935, Blaðsíða 69

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Table III.
Biological spectra from Asólfsstaðir and Norðtunga.
To compare with Table II.
1 2 34567 8 9
point sum 1370 1790 1010 604 672 984 1148 1064 1120
Number
°f species 38 44 27 20 26 30 27 26 27
Density
of species 13,7 17,9 10,1 6,0 6,7 9,8 11,5 10,6 11,2
A .......... 26,3 26,3 19,8 29,0 21,2 21,6 35,8 30,0 31,0
E .......... 73,7 73,7 81,2 71,0 78,8 78,4 64,2 70,0 69,0
A 3 ............ 13,1 12,3 7,9 13,6 12,4 10,4 17,4 14,2 15,3
A2 .............. 7,3 6,2 2,9 10,2 8,3 7,8 11,3 10,1 10,3
A1 .............. 6,1 7,8 9,9 5,1 0,5 3,4 7,2 5,6 5,3
E 4 ............ 24,0 24,6 10,9 16,5 18,1 23,9 27,3 30,7 27,4
E3 ............. 17,0 21,8 30,9 48,9 43,5 35,1 25,9 22,8 28,8
E 2 ............ 27,0 21,8 34,7 4,5 16,1 15,3 6,1 11,2 9,6
E 1 ............. 5,9 5,6 3,9 1,1 1,0 4,1 4,8 5,2 3,2
Ch ............ 13,9 12,3 10,0 11,3 5,4 16,3 17,1 17,3 15,4
H ............. 72,3 78,3 74,4 75,5 74,4 72,8 69,7 68,0 68,9
G ............. 11,7 9,9 15,4 13,2 20,2 11,0 13,2 14,7 15,7
1—3 Ásólfsstaðir 1930 St. Std., 4—9 Norðtunga H. M. H.
1925. 4—5 dense birch copses. 6—9 open birch copses or glades.
This table shows the results drawn from the circlings
in copses near Ásólfsstaðir and Norðtunga. I am not ac-
quainted with any other circlings made in copse-growths
here in this country, but though the general appearance
°f the biological spectra is alike in all places, there is
yet some difference. E and H are everywhere the dom-
inant species, but it is noteworthy that the percentage
°t E is highest near Hlíð, and what is most peculiar
about this is that this difference shows almost solely
in the most southerly species El. As I have no weather
fcports from all these places to compare together I
cannot say anything about this matter, but it seems like-
iy to me, judging from the vegetation, that the climatic
conditions are mildest at this point in Hlíð. There is so
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