Environmental Engineering Reference
In-Depth Information
Figure 14.10.
Total number of invertebrate taxa recorded in the Turning Basin MSC
from 1990 to 2007.
9000
40
Asellus aquatics
Crangonyx pseudogracilis
8000
35
7000
30
6000
25
5000
20
4000
15
3000
10
2000
5
1000
0
0
Figure 14.11.
Numbers of Asellus aquaticus and Crangonyx pseudogracilis in the MSC
(sampled using standard colonisation units (SCU)).
reduction in A. aquaticus and increase in C. pseudogracilis in 2001 coincided with
the oxygenation system commissioning and initial operational phase.
Fish have also benefited from improvements to summer conditions resulting
from the oxygenation remediation, enabling them to survive in the Turning
