Mass-balance ecosystem model of the East China Sea

作     者：William W.L. Cheung Tony J. Pitcher 

作者机构：The Fisheries CentreUniversity of British Columbia 

出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))

年 卷 期：2009年第19卷第10期

页      面：1271-1280页

核心收录：

学科分类：07[理学] 09[农学] 0903[农学-农业资源与环境] 0713[理学-生态学] 

基　　金：conducted under the auspices of the National Science and Technology Support Plan(2007BAD43B01) 

主　　题：Ecopath East China Sea Mass-balance Fishery Ecosystem 

摘      要：Using the Ecopath mass-balance trophodynamic model,this paper analyzed the trophic levels,flows,food web structure and ecosystem maturity of the East China Sea,and identified ecologically important functional groups in the *** model is based on fishery resource surveys of the East China Sea in 2000,studies on diet composition and global databases such as FishBase and the Sea Around Us Project *** results showed that trophic levels of the functional groups are between 2.86 and 4.37,with an average of ***(Engraulis japonicus),small fishes and benthic crustaceans such as shrimps and crabs are important groups in terms of the trophic structure and flow dynamics in the East China *** flows of most groups are between specific trophic levels,except file fish(Thamnaconus spp.),pomfret(Pampus spp.) and *** transfer efficiency of levels Ⅱ,Ⅲ,IV and more than V are 11.8%,21.1%,17.4% and 22.1-22.5%,*** of fishery-the largest ‘consumer’ of the ecosystemare much stronger than those exerted by biological groups in the *** model suggests that the current fishery can further reduce the complexity of the *** of the system indices suggest that maturity of the ecosystem is *** conclusion of this model indicates that it was the overfishing that caused the ecosystem of the East China Sea declined,which should be taken into account as a critical reference for fisheries management in the future.