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Table 2 The basic input data and biological parameters of groups as estimated by Ecopath for the artificial ecosystem model

From: An ecological model of the artificial ecosystem (northern Hangzhou Bay, China): analysis of ecosystem structure and fishing impacts

Trophic group

Biomass (t km−2)

P/B (year−1)

Q/B (year−1)

EE

GE (P/Q)

Trophic level

Unassimilated consumption

Catch (t km−2)

1 Phytoplankton

14.16

118.2

0.194

1.00

0.4

2 Macrophytes

32.60

7.50

0.591

1.00

0.4

2.52

3 Herbivorous zooplankton

14.80

86.00

280.00

0.358

0.307

2.00

0.4

4 Carnivorous zooplankton

6.00

25.00

89.00

0.891

0.281

2.84

0.3

5 Infauna

14.15

4.00

20.00

0.902

0.200

2.44

0.3

6 Mollusca

6.82

1.75

14.00

0.376

0.125

3.05

0.2

7 Shrimps

3.15

1.84

24.4

0.307

0.075

2.96

0.2

8 Crabs

1.50

2.12

8.48

0.492

0.174

3.23

0.2

9 Herbivorous fish

2.21

1.32

12.00

0.553

0.110

2.09

0.2

0.40

10 Zooplanktivorous fish

1.25

1.28

7.50

0.779

0.171

3.14

0.2

0.25

11 Benthic-feeding fish

1.21

1.22

5.89

0.501

0.207

3.22

0.2

0.08

12 Piscivorous fish

0.41

0.90

6.00

0.407

0.150

3.90

0.2

0.15

13 Detritus

10.00

0.440

1.00

 

  1. Values in italic were estimated by model