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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