Establishment and application of OSMOSE-ECS model based on East China Sea ecosystem
HUANG Meng, LI Yuesong*
1.College of Marine Science, Shanghai Ocean University, Shanghai 201306, China; 2.National Engineering Research Center for Oceanic Fisheries, Shanghai 201306, China; 3.Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai 201306, China; 4.Collaborative Innovation Center for Distant-Water Fisheries, Shanghai 201306, China
Abstract: The East China Sea is an important fishing ground in China. In order to manage and protect the fishery resources in the East China Sea (26°-35°N， 120°-130°E) more effectively, an object-oriented simulator of marine ecosystems exploitation model (OSMOSE) was developed based on the East China Sea ecosystem. Nineteen major economic species commonly found in the East China Sea, including chub mackerel Scomberjaponicus, were used as objects. Trends in the mean trophic level, biomass and mean body length of each species was simulated under the condition where no restrictions were imposed on fishing operations. The results show that the model is able to simulate the East China Sea ecosystem reasonably well through the validation of observation data in the absence of actual input data; the population structure of the East China Sea ecosystem has changed significantly during the simulated 10 years, and the average level of total biomass is relatively stable, but the average trophic level of biomass decreases from 3.53 to 3.16, and the proportion of high trophic level individuals decreases; the body length of most economic fish species decreases slowly during the fluctuation, and the overall body length decreases. The finding shows that the description of the changes in the status of fishery stocks in the East China Sea by the OSMOSE-ECS model matches the actual situation, and without effective fisheries management measures, the East China Sea ecosystem will inevitably experience a decline in high trophic level organisms and a tendency for species individuals to become smaller and younger, and it is feasible to use the OSMOSE-ECS model to support the management of marine fishery resources and ecosystem assessment in the East China Sea.
黄猛, 李曰嵩. 面向东海生态系统的OSMOSE-ECS模型构建与应用[J]. 大连海洋大学学报, 2022, 37(6): 993-1003.
HUANG Meng, LI Yuesong. Establishment and application of OSMOSE-ECS model based on East China Sea ecosystem. Journal of Dalian Ocean University, 2022, 37(6): 993-1003.
2022, Vol. 37 
