A food-web model as a tool for the ecosystem-level management of bivalves in an Atlantic coastal lagoon
文献类型： 外文期刊
作者： Jiang, Weiwei 1 ; Coppola, Francesca 3 ; Jiang, Zengjie 1 ; Freitas, Rosa 3 ; Mao, Yuze 1 ; Tan, Zhijun 1 ; Fang, Jinghui 1 ; Fang, Jianguang 1 ; Zhang, Yitao 5 ;
作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, State Key Lab Mariculture Biobreeding & Sustainabl, Qingdao 266071, Peoples R China
2.Laoshan Lab, Lab Marine Fisheries Sci & Food Prod Proc, Qingdao 266200, Peoples R China
3.Univ Aveiro, CESAM, P-3810193 Aveiro, Portugal
4.Univ Aveiro, Dept Biol, P-3810193 Aveiro, Portugal
5.Rongcheng Chudao Aquaculture Corp, Rongcheng 264312, Peoples R China
关键词： Ria de Aveiro; Ecopath model; Ruditapes philippinarum; Ecological carrying capacity; Maximum sustained yield
期刊名称：MARINE ENVIRONMENTAL RESEARCH （ 影响因子：3.3； 五年影响因子：3.5 ）
ISSN： 0141-1136
年卷期： 2023 年 190 卷
页码：
收录情况： SCI
摘要： The Ria de Aveiro is an important coastal lagoon for wildlife in Portugal, where the production of bivalves reaches approximately 2700 tons annually. However, the illegal overfishing of bivalves is frequent in this lagoon, which causes critical changes in the ecosystem. In this study, using a developed food-web model (Ecopath model), the ecological carrying capacity (ECC) and maximum sustained yield (MSY) of the Manila clam, Ruditapes philippinarum were estimated, and the effects of further increases in clam biomass on other species were investigated. The results showed that 1) the current biomass and legal catch of R. philippinarum do not yet exceed the ECC (172.40 tons km(-2)) or the MSY (86.20 tons km(-2) year(-1)) in Ria de Aveiro; 2) the harvested Manila clams of the MSY represent removing from the ecosystem similar to 581 tons carbon (C) and 83 tons nitrogen (N) annually, with substantial ecological and economic implications; and 3) a further increase in the biomass levels of this species may cause the ecotrophic efficiency of other groups to become unrealistic, potentially leading to decreases in ecosystem transfer efficiency, biodiversity and health. The results here are expected to guide the sustainable development and management of bivalve aquaculture in Ria de Aveiro and the protection of the local environment.
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