Construction and analysis of a coral reef trophic network for Qilianyu Islands, Xisha Islands
文献类型： 外文期刊
作者： Hong, Xiaofan 1 ; Chen, Zuozhi 1 ; Zhang, Jun 1 ; Jiang, Yan'e 1 ; Gong, Yuyan 1 ; Cai, Yancong 1 ; Yang, Yutao 1 ;
作者机构： 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Key Lab Sustainable Utilizat Open Sea Fishery, Minist Agr & Rural Affairs, Guangzhou 510300, Peoples R China
2.Southern Marine Sci & Engn Guangdong Lab Guangzho, Guangzhou 511458, Peoples R China
3.Shanghai Ocean Univ, Coll Marine Sci, Shanghai 201306, Peoples R China
关键词： South China Sea; Qilianyu Islands; coral reef; Ecopath model; food webs; ecosystem characteristic
期刊名称：ACTA OCEANOLOGICA SINICA （ 影响因子：1.4； 五年影响因子：1.6 ）
ISSN： 0253-505X
年卷期： 2022 年 41 卷 12 期
页码：
收录情况： SCI
摘要： Qilianyu Islands coral reefs (QICR), located in the northeastern part of the South China Sea, has been affected by human activities and natural disturbance. To characterize the trophic structure, ecosystem properties and keystone species of this region, a food-web model for the QICR is developed using methods involving a mass-balance approach with Ecopath with Ecosim software. Trophic levels range from 1.00 for detritus and primary producers to 3.80 for chondrichthyes. The mean trophic transfer efficiency for the entire ecosystem is 13.15%, with 55% of total energy flow originating from primary producers. A mixed trophic impact analysis indicates that coral strongly impacts most components of this ecosystem. A comparison of our QICR model with that for other coral reef ecosystems suggests that the QICR ecosystem is immature and/or is degraded.
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