Table 4 Algae species of the mature biofilms (22nd day)

Cyclotella menighiana

-

3.8

-

3.0

-

Fragilaria construens f. venter

-

-

3.0

-

-

Myamaea atomus var. permitis

-

-

3.6

-

-

Navicula capitatoradiata

-

3.5

-

-

-

Navicula reichardtiana

-

2.0

2.1

-

-

Nitzschia abbreviata

-

2.6

-

-

-

Nitzschia acicularis

2.1

-

-

-

-

Nitzschia fonticola

11.2

21.9

8.9

4.5

6.1

Nitzschia fonticola - romana form

2.9

10.5

5.6

-

3.4

Nitzschia palea var. debilis

6.6

-

-

-

-

Nitzschia palea var. palea

4.1

2.0

-

2.7

-

Nitzschia paleacea

48.5

37.0

61.4

54.5

69.2

Stephanodiscus sp.

3.7

-

-

-

-

Surirella brebissonii var. kuetzingii

2.9

3.5

3.0

26.9

9.8

Others

17.8

13.1

12.5

8.4

11.6