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

Figure 9.14.
EXPERIMENTAL REMOVAL OF D. ANTARCTICA AT TAUTUKU
AND OHAU POINT.
(a) Development of a lawn-like sward of recolonising Dupvillaea
in the spring on Area 1, Tautuku which was cleared during
the previous winter.
(b)
Recolonisation of old hold fast site by Scytosiphon lomentaria,
(c)
(d)
(e)
(f)
a filamentous brown alga and D. ~~ta~ctioa.
Ulva sp. growing on old holdfast sites in an area cleared
during summer; i.e. outside the fruiting season.
Articulated corallines and other red algae covering an area
cleared during the spring. Area Sa, Tautuku.
D. antarctica that have colonised holdfasts left after
storm damage. East Rocks, Tautuku, December 1974.
Rock at Ohau Point where 0.5 m wide strips were cleared and
scorched at different times thoughout 1974. Note how the
small recolonising D. anto~ticQ are largely confined to
one strip (arrowed) cleared in mid-winter-. See Table 9.2,
p.192.