Table 6 Trophic level of each functional group in Lake Datong ecosystem

1

Siniperca

3.685

2

Erythroculter

3.437

3

Pelteobagrus

2.66

4

Coilia

3.06

5

Megalobrama and Parabramis

2.016

6

Cyprinus

2.681

7

Carassius

2.221

8

Hypophthalmichthys nobilis

2.935

9

Hypophthalmichthys molitrix

2.603

10

Small fish

2.522

11

Mollusk

2

12

Protozoans and Rotifers

2

13

Cladocera

2.02

14

Copepods

2.02

15

Phytoplankton

1

16

Submerged Macrophytes

1

17

Detritus

1