Aquatic community structure of the important habitat of Acipenser sinensis in the Yangtze River Estuary

Aquatic community structure of the important habitat of Acipenser sinensis in the Yangtze River Estuary | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 19 June 2025 V1 Latest version Share on Aquatic community structure of the important habitat of Acipenser sinensis in the Yangtze River Estuary Authors : Bo Feng , Guangpeng Feng 0000-0002-8397-5123 [email protected] , Xuzhe Gu , Ju Yang , and Qingbo Zhang Authors Info & Affiliations https://doi.org/10.22541/au.175033637.78623712/v1 175 views 96 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract The Yangtze River estuary is a critical habitat for the endangered Acipenser sinensis, supporting diverse aquatic communities vital for ecosystem functioning and the sturgeon’s survival. To assess the ecological conditions influencing A. sinensis’s habitat, this study investigated the fish community structure, ecological indices, and seasonal variations in the estuary. Seasonal surveys from May to December 2024 identified 53 fish species across 12 orders, 22 families, and 44 genera, providing insights into the ecological dynamics of A. sinensis’s habitat.Cyprinidae dominated the assemblage, representing 37.74% of species. Dominant species (based on IRI) such as Cynoglossus gracilis, Coilia nasus, and Lateolabrax japonicus are key indicators of habitat quality for A. sinensis. The community was predominantly sedentary (83.02%) and inhabited the mid-upper water column (50.94%). Carnivorous (50.94%) and omnivorous (33.96%) species dominated trophic guilds. Ecological indices indicated moderate diversity (Shannon-Weiner: 1.797-2.563; Simpson: 0.788-0.900; Margalef: 1.724-5.138; Pielou evenness: 0.526-0.864), essential for maintaining a balanced ecosystem for A. sinensis. Seasonal similarity analysis showed highest overlap between spring and summer (Bray-Curtis >0.65), with comparable similarity between spring-autumn and autumn-winter. ABC curve analysis indicated minimal disturbance in spring (W=0.041) but significant stress in autumn and winter (W=-0.068 to 0.276), correlating with seasonal hypoxia events. Summer displayed moderate disturbance (W=0). These findings underscore anthropogenic pressures on habitat suitability for A. sinensis and highlight the need to prioritize the potential risk of seasonal environmental pressure on its survival. Supplementary Material File (oik-11772-file001.docx) Download 411.47 KB Information & Authors Information Version history V1 Version 1 19 June 2025 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords acipenser sinensis habitat aquatic community structure aquatic organisms biodiversity Authors Affiliations Bo Feng Chinese Academy of Fishery Sciences East China Sea Fishery Research Institute View all articles by this author Guangpeng Feng 0000-0002-8397-5123 [email protected] Chinese Academy of Fishery Sciences East China Sea Fishery Research Institute View all articles by this author Xuzhe Gu Chinese Academy of Fishery Sciences East China Sea Fishery Research Institute View all articles by this author Ju Yang Chinese Academy of Fishery Sciences East China Sea Fishery Research Institute View all articles by this author Qingbo Zhang Chinese Academy of Fishery Sciences East China Sea Fishery Research Institute View all articles by this author Metrics & Citations Metrics Article Usage 175 views 96 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Bo Feng, Guangpeng Feng, Xuzhe Gu, et al. Aquatic community structure of the important habitat of Acipenser sinensis in the Yangtze River Estuary. Authorea . 19 June 2025. DOI: https://doi.org/10.22541/au.175033637.78623712/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . 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