A biological study of Durvillaea antarctica (Chamisso) Hariot and D ...

18
the area (slightly south of ra tunnel No. 20). The entrance
to this gut is to the open sea, and
head of the are s to fOl:'ces. OVerClll wave
force was rated as veX'y s
Loose boulders on the bottc)!1 are
tossed about during stoxms. , Bos al"buscula and mal:
Polysiphonia spp. dominate the shore above the D. (mtaPctica
(f' ig, 2.2 b) , l?or sea surface tures see L
( 5) (42°25'35"8, 43 1 15
A transect on i:he southeast side of Sea.l Reef . 2.
traversed a 12-15 m wide ledge studded with mudstone rocks.
The transect area was bounded inshore by a low {2
which forms
the edge of Seal Reef. There are a of wave exposures. The
out.ermost rocks are subjected to very wave while others
inshore are semi sheltered. Seal Reef the area from northeast
storms and offshore rock and distant
some
protection from the ea6t and southeast. Wave force for the area
was rated as moderate. Limpets dominate the shore above the
band (Fig. 2.2c).
(6) Parititahi Tunnel Area (42°21'00"8, 34'50
A D. willana sample "las collected below the
north end of the road 'tunnel. The shore there is a narrow
dissected
boulders.
numerous deep channels and s,tudded t-dth
Durvillaea grows on the edge of the
and in some
of the and channels. There is a concrete
wall 3-5 m
inshore of the bands. Parititahi Point affords some tion
from
The 50
storms,.
'lana plants ma:cked wit1) "Allflex" labels Here
situated 1 kro south of the road tunnel. The shore there' is much
wider, and consists of rocks and lO1JI, flat outcrops with many
channels and s. There is a narrm