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Ecosystem trophic status during Nemopilema nomurai bloom and non-bloom periods in a temperate Marginal Sea: Insights from ecological network analysis

文献类型：期刊论文

作者Guo, Dongjie5; Zhang, Fang1,5; Zang, Wenxiao5; Wang, Xu4; Zhu, Ling3; Sun, Song1,2,5
刊名OCEAN & COASTAL MANAGEMENT
出版日期2026-04-01
卷号275页码:13
关键词Jellyfish blooms Food web structure Ecosystem health Ecological network analysis Nemopilema nomurai
ISSN号0964-5691
DOI10.1016/j.ocecoaman.2026.108105
通讯作者Zhang, Fang(zhangfang@qdio.ac.cn) ; Sun, Song(sunsong@qdio.ac.cn)
英文摘要Nemopilema nomurai Kishinouye, 1922, has emerged as a dominant large jellyfish species in the East Asian Marginal Seas over recent decades, posing increasing ecological and management challenges. To elucidate its ecological role, two Ecopath models representing N. nomurai bloom (2012-2013) and non-bloom (2014) periods in the northern East China Sea and southern Yellow Sea were developed. Ecological network analysis was employed to assess variations in ecosystem trophic status between these two periods. Results from keystone index and mixed trophic impact analysis revealed that N. nomurai occupied a more pivotal ecological role during bloom period, exerting widespread negative effects on multiple functional groups and thereby disrupting energy transfer within the food web. During bloom period, there were notable increases in total system throughput, total biomass, total primary production, and ascendency, indicating an expansion in ecosystem scale. Conversely, declines in Finn's cycling index and average path length suggested weakened recycling processes and shortened trophic linkages. Furthermore, decreased average mutual information, along with modified constraint efficiency, reflected a less organized and more structurally constrained energy pathway. Generally, these shifts depicted an ecosystem status characterized by high scale but reduced efficiency, disrupted trophic organization, and diminished ecosystem maturity during N. nomurai bloom period. These findings enhance our understanding of the ecological impacts of N. nomurai within marine food webs and emphasize the importance of integrating jellyfish dynamics into ecosystem-based management strategies and ecosystem health assessments.
WOS关键词OFFSHORE WIND FARM ; FOOD-WEB MODELS ; JELLYFISH BLOOMS ; FORAGE FISH ; YELLOW SEA ; INTERANNUAL VARIABILITY ; FLOW-ANALYSIS ; ECOPATH ; INDICATORS ; FISHERIES
资助项目National Natural Science Foundation of China[42130411] ; National Natural Science Foundation of China[42576147] ; National Key R&D Program of China[2023YFC3108202] ; Qingdao Postdoctoral Science Foundation[QDBSH20250101007]
WOS研究方向Oceanography ; Water Resources
语种英语
WOS记录号WOS:001675220300001
出版者ELSEVIER SCI LTD
源URL[http://ir.qdio.ac.cn/handle/337002/204628]  
专题海洋研究所_海洋生态与环境科学重点实验室
通讯作者Zhang, Fang; Sun, Song
作者单位1.Univ Chinese Acad Sci, Coll Marine Sci, Qingdao 266071, Peoples R China
2.Chinese Acad Sci, Inst Oceanol, Jiaozhou Bay Natl Marine Ecosyst Res Stn, Qingdao 266071, Peoples R China
3.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Key Lab Sustainable Dev Marine Fisheries, Minist Agr, Qingdao 266071, Peoples R China
4.Fudan Univ, Natl Observat & Res Stn Wetland Ecosyst Yangtze Es, State Key Lab Wetland Conservat & Restorat, Sch Life Sci,Minist Educ,Key Lab Biodivers Sci & E, Shanghai, Peoples R China
5.Chinese Acad Sci, Inst Oceanol, Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
推荐引用方式
GB/T 7714		 Guo, Dongjie,Zhang, Fang,Zang, Wenxiao,et al. Ecosystem trophic status during Nemopilema nomurai bloom and non-bloom periods in a temperate Marginal Sea: Insights from ecological network analysis[J]. OCEAN & COASTAL MANAGEMENT,2026,275:13.
APA Guo, Dongjie,Zhang, Fang,Zang, Wenxiao,Wang, Xu,Zhu, Ling,&Sun, Song.(2026).Ecosystem trophic status during Nemopilema nomurai bloom and non-bloom periods in a temperate Marginal Sea: Insights from ecological network analysis.OCEAN & COASTAL MANAGEMENT,275,13.
MLA Guo, Dongjie,et al."Ecosystem trophic status during Nemopilema nomurai bloom and non-bloom periods in a temperate Marginal Sea: Insights from ecological network analysis".OCEAN & COASTAL MANAGEMENT 275(2026):13.

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来源：海洋研究所

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