Rit (Vísindafélag Íslendinga) - 01.06.1939, Síða 21

21
15th 1933, h. above sea-level ca. 100 m, H 25 cm, F 1—10
m2. Obs. 4—6, on dry meadow land, were made on ”Bunká”
on 4th and 13th July, 1933, h. above sea-level ca. 150 m,
H 30 cm, F 1—10 m2. Obs. 7, on cultivated meadow land,
was made on June 16th, 1933, at ”Stakkagerðistún” in
”Heimaey”, h. above sea-level 20 m, H 25 cm, F 1—10 m2
(cf. Table 3 A and B).
1. In the Angelica clusters the soil is of varying depth
but coarse and sandy, usually damp and with no moss.
Fulmaris glacialis nested in many places in the area. The
vegetation of the area lies on a certain slope facing N. E.
It is peculiar how few species there are, only 7, and Arch-
angelica officinalis, which grows thickly all over the
area and is very luxuriant, ca. 1 m in height on the average,
Stellaria media (L.) Cyrill and Festuca rubra L., are most
widespread; Matricaria inodora L. var phæocephala Rubr.
and Cochlearia officinalis L. are also very widespread.
The biological spectrum shows a very low A %, also E 1
% is 0. Chamaephytes and Geophytes are unknown and
Therophytes have taken their place, with a rise in the
amount of the indifferent Hemicryptophyts. It is diffi-
cult to come to any definite conclusions from these results
as only one area of this formation was considered. It must
also be noticed that the vegetation in these areas is highly
specialised, first and foremost, as we have seen, as regards
the species and again as regards the life forms. Again we
might distinguish two kinds of angelica clusters in the
Westmann Islands, i.e. the angelica clusters where the
fulmar only nests, such as we have here and in many other
places on the rocks, which is very difficult of access for
men and which is the typial luxuriant angelica growth.
On the other hand there are the angelica clusters where
only theFratercula arctica nests, on the top of ”Litli Klyfi”
and the lower ”Kleyfir”. Here the soil is sandy, dry but
deep. The characteristic plants are Archangelica officinalis
Hoffm., Matricaria inodora L. var. phæocephala Rupr. and
Festuca rubra L., Stellaria media (L.) Cyrill is also found