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

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

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		–

ISSN: 1438-3888