Structure and complexity of Haizhou Bay food web based on topological network analysis

Xu Congjun; Liu Yang; Cheng Yuan; Xu Binduo; Zhang Chongliang; Ren Yiping; Xue Ying

doi:10.3969/j.issn.0253-4193.2020.04.006

Volume 42 Issue 4

Nov. 2020

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Xu Congjun，Liu Yang，Cheng Yuan, et al. Structure and complexity of Haizhou Bay food web based on topological network analysis[J]. Haiyang Xuebao，2020, 42(4)：47–54，doi:10.3969/j.issn.0253−4193.2020.04.006

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Structure and complexity of Haizhou Bay food web based on topological network analysis

doi: 10.3969/j.issn.0253-4193.2020.04.006

1.
Fisheries College, Ocean University of China, Qingdao 266003, China
2.
Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
3.
School of Information, Qingdao Technical College, Qingdao 266555, China
4.
Offshore (Dalian) Ecological Development Co. Ltd., Dalian 116023, China

Received Date: 2019-06-18
Rev Recd Date: 2019-09-19

Available Online: 2020-11-18

Publish Date: 2020-04-25

Abstract

Abstract

Research on the structure and complexity of food webs helps to analyze the function, nutrient dynamics and energy conversion of food webs. Based on the survey data of fishery resources and the analysis of gastric contents in five voyages in Haizhou Bay and its adjacent waters from March to December 2011, this study constructed a Haizhou Bay topology network based on 11 topological network indices. To study the structure and complexity of the Haizhou Bay food network. The results showed that the number of species in the Haizhou Bay food network (S) was 93, the number of connections (L) was 1 021, the number of interactions per species (L/S) was 10.98, the number of connections (L/S²) was 0.12; the proportions of top species, intermediate species, foundation species were 29%, 69% and 2%, respectively; the omnivorous index of food web was 87%; the connection complexity index SC was 22.2; the characteristic path length ChPath was 2.11, and the clustering coefficient CC was 0.23. Studies on the number of interactions and the number of connections in each species showed that the values of L/S and L/S² were within the normal range, so the complexity of the Haizhou Bay food web remained high. Through the analysis of the structure of the food web by species ratio, omnivorous index, connection complexity index, characteristic path length and clustering coefficient, it was found that the food network structure of Haizhou Bay was in a stable state, and the proportion of basic species was low because the phytoplankton and seaweed groups were not classified. Through the study of the structure and complexity of Haizhou Bay food network, it provides an important basis for the in-depth study of the function of Haizhou Bay food network and the scientific management of Haizhou Bay fishery resources.
- Haizhou Bay,
- food web complexity,
- food web structure,
- topology network

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References(45)

References

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