Hydro-ecological relations in the Delta Waters

Hydro-ecological relations in the Delta Waters Hydro-ecological relations in the Delta Waters

29.10.2014 Views

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.

, 0.66 m 0,s - 0.02 1989 I 0.86 - 0.85 @ 0.82 - 0.02 chlorophyl (~g/l] m 0.85 - 8.6 11111111 0.82 - 0.01 DAY U1 88 s.es - a.ai I @,at - s,e~ B3 0.04- 0.84 6.01- #.M Figure 5 $imlatlan produced by DELWAQ-BLWMmodel far daF 121. 1982 Table 2 Summarized results @Of research on eutrophication in Eellands DioplHaxingvliet long short v. short residence time agpron. apprw. 69 days 6 days l - 2 days system lake transition river lake-river behaviour of aka* Hollands Diep settling out settling out transperted Earingvliet growing settling out transported

, 0.66 m 0,s - 0.02<br />

1989<br />

I 0.86 - 0.85 @ 0.82 - 0.02<br />

chlorophyl (~g/l] m 0.85 - 8.6 11111111 0.82 - 0.01<br />

DAY U1<br />

88 s.es - a.ai I @,at - s,e~<br />

B3 0.04- 0.84 6.01- #.M<br />

Figure 5 $imlatlan produced by DELWAQ-BLWMmodel far daF 121. 1982<br />

Table 2 Summarized results @Of research on eutrophication <strong>in</strong> Eellands<br />

DioplHax<strong>in</strong>gvliet<br />

long short v. short<br />

residence time agpron. apprw.<br />

69 days 6 days l - 2 days<br />

system lake transition river<br />

lake-river<br />

behaviour of aka*<br />

Hollands Diep settl<strong>in</strong>g out settl<strong>in</strong>g out transperted<br />

Ear<strong>in</strong>gvliet grow<strong>in</strong>g settl<strong>in</strong>g out transported

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!