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

176
seasonal pattern of grolJlth and mor in the area
namely, slowest growth and
and eat-ly spring, and fastest and lo,,,est mortali
during the late spring and summer.
7) 1
winter
occurring
Fluctuations in standing crop did not ~ppear to be hy
seasonal changes in
structure, for
diffe)::ences
in times,
su:ucture was
consistent,
S recruibnent in ~.,inter and early spring did not cause any
increase in standhlg crop values at th".i:: time of year.
The number of stipes' per ho1dfast. mass.
D. antarctica Dc willana
A.rea Ie, Tautuku
n=288 n=310
No, of st per % of sample % of
holdfast mass
1 62.0 63.5
2 17.0 19.3
3 7.0 10.3.
4 5.6 2.9
5 3.8 1.6
6 0.7 0.6
7 1.7 1.0
8 1.3 0.3
9 0.3 0.3
10 nil nil
11 nil
12 0.3 nil
13 nil
14 0.3 nil
\fh.en the numerical rrOlU different
areas, it was to exclude all small to :c.'educe