水生生物学报2026，Vol.50Issue(7)：112-125,14.DOI:10.3724/1000-3207.2026.2026.0030
上海苏州河鱼类群落结构及其时空动态
FISH COMMUNITY STRUCTURE AND ITS SPATIOTEMPORAL DYNAMICS IN SUZHOU CREEK,SHANGHAI
摘要
Abstract
Suzhou Creek has undergone extensive ecological rehabilitation over recent decades,yet systematic assess-ments of fish community recovery remain limited.To evaluate changes in fish diversity following remediation,we surveyed fish at 14 sections of the creek in July(summer)and October(autumn)2024 and analyzed species diversity and community structure across seasons and reaches.A total of 5845 individuals representing 55 species,45 genera,19 families,and 9 orders were collected.Cypriniformes was the dominant order,comprising 63.64%of all species,followed by Perciformes(20.00%).The assemblage was dominated by omnivorous species(56.36%),pelagic and mid-water species(52.72%),and small-to medium-bodied fishes(61.81%).Species richness was 39 in upstream sections,48 in tributary sections,and 30 in downstream sections.Dominant species varied with season and reach.Across the creek as a whole,Carassius auratus,Pseudorasbora parva,Acanthorhodeus chankaensis,and Culter dabryi were the domi-nant species.Margalef's richness index(D),Pielou's evenness index(J′),and the Shannon-Wiener diversity index(H′)were all higher in summer than those in autumn,whereas Simpson's dominance index(C)showed the reverse pattern.Abundance-biomass comparison(ABC)curves indicated generally low disturbance across the fish community.W values in downstream sections were positive in both seasons(0.162 in summer;0.124 in autumn),suggesting relatively stable community structure.Cluster analysis grouped the 14 sections into three clusters,with a mean within-group simi-larity of 64.20%and between-group dissimilarities of 43.65%-48.55%.Compared with the 2019 survey,total species richness increased from 45 to 55,and mean species richness per section increased from 17.3 to 22.0;the increase was most pronounced in downstream sections,where the mean rose from 10.0 to 18.8.The dominant species shifted from Pseudobrama simoni,C.auratus,and A.chankaensis in 2019 to C.auratus,A.chankaensis,P.parva,and C.dabryi in 2024,and fish communities in upstream and downstream sections became more similar in composition.Nevertheless,the low proportions of estuarine and herbivorous species indicate that Suzhou Creek remains a relatively isolated,highly channelized system with limited aquatic vegetation.Future restoration should prioritize improving hydrological connectivity and habitat heterogeneity,enhancing benthic substrate conditions,and re-establishing submerged macro-phyte communities.关键词
苏州河/鱼类多样性/群落结构/时间动态/空间动态Key words
Suzhou Creek/Fish diversity/Community structure/Temporal variation/Spatial variation分类
农业科技引用本文复制引用
段明杰,林熙戎,郭弘艺,张亚,吴阿娜,唐文乔..上海苏州河鱼类群落结构及其时空动态[J].水生生物学报,2026,50(7):112-125,14.基金项目
上海市环境监测中心项目(2024)资助[Supported by the Project Funding(2024)from the Shanghai Environmental Monitoring Center] （2024）
