Hydro-ecological relations in the Delta Waters

chlorophyl [u~/I) l 8.14- 8.12 IUU~U~ a.ffi- 8.83
m 0.lZ 8.11 8.83 B.82
DAY p 8.11 - 8.89 1 8.82 - 8.88
IZ1
8.U - 8.68
%igure 4 Simnlation produced by DGLWAQ-BLOOM model for day 121, 1976.
Figure 4 &wa the result produced by the model for day l21 (the end of
April) in 1976. It indicates tbat there are appreciably fewer algae in
the EIollmds Diep at the Volkerak sluice6 than in the river channels
upstream, and thac very high levels of chlorophyl wcur near che
Earingvliet slgices .
The picture is different: fer 1982 (see Fig. 5). In the Bollasds Rdep
the chlotuphpl levels are lower than is the river ehwnela, but
towards the Hafiupliet sluices they decresse even furLher. mia is
fully in agreement With the picture of measured chloropliyl levels in
that year.