Plankton Relations of the Red Sea, Persian Gulf and Arabian Sea
225
Working along the same lines, SUKHANOVA (1969) points to a decreasing trend in
the concentration of peridinians from the Gulf of Aden through the southern part of
the Red Sea towards the northern part, quoting figures of 450-950,200-350 and
. .
nO),40 &I ~ 1&00t!7 ,l;
MER O'M!ASIE
Fig, 5, Bathymetric map of the Persian Gulf, the Arabian Sea and the Gulf of Aden. (After FURNESTIN
and CODACCIONI, 1968)
130 cells m- 3 respectively. Comparable figures were quoted by the same investigator
with regard to the distribution of diatoms in the same region.
The same trend is also evident, according to DELALO (1966), in the distribution of
zooplankton, with 571, 81 and 48 mg m- 3 in the Gulf of Aden, the southern and the
northern parts of the Red Sea respectively.