水产学报2026，Vol.50Issue(7)：81-90,10.DOI:10.11964/jfc.20241114754
2022和2023年春季长江口邻近海域渔业群落结构变化及与环境因子的关系
Interannual variation of fishery community structure in the adjacent waters of the Yangtze River Estuary in spring 2022-2023 and its relationship with environmental factors
摘要
Abstract
In recent years,intensified human activities and climate change have increasingly impacted the community structure of fishery resources in the Yangtze River Estuary.To elucidate the mechanisms underlying changes in fishery community struc-ture,this study analyzed data from spring bottom trawl surveys conducted continuously over two years(2022-2023)in the Yangtze River Estuary.Community structure characteristics,including species composition,dominant species,and zoogeo-graphical patterns,were examined.Canonical correspondence analysis(CCA)and hierarchical clustering were applied to investigate interannual variations and driving factors of fishery communities.Results revealed that fishery assemblages clustered into three groups:nearshore,southern,and northern regions,dominated respectively by estuarine,warm-water,and cold-water fauna.Compared to 2022,both species abundance and mean individual size significantly decreased in 2023,while no significant differences in mean abundance or size were observed among the three clusters.CCA indicated that the first two axes explained 25.5%of the total variation in species-environment relationships,with axis 1 reflecting latitudinal distribution mainly driven by temperature,and axis 2 representing interannual variability likely associated with fishing pressure and salinity fluctuations.This study demonstrates that the fishery community structure in the Yangtze River Estuary is influenced not only by temperature and salinity but also by variations in fishing intensity.关键词
渔业生物/群落结构/年际变化/环境因子/长江口Key words
fishery organisms/community structure/interannual variation/environmental factors/Yangtze River Estuary分类
农业科技引用本文复制引用
何非凡,姜亚洲,许永久,严小军,宋伟华,李博,王健鑫,刘万金,俞佳,张曜绎..2022和2023年春季长江口邻近海域渔业群落结构变化及与环境因子的关系[J].水产学报,2026,50(7):81-90,10.基金项目
国家重点研发计划(2023YFD2401904,2024YFD2400405) （2023YFD2401904,2024YFD2400405）
马鞍列岛重点保护海域底层渔业生境保护调查项目(ZSYYJ-20230803-0003) National Key Research and Development Program of China(2023YFD2401904,2024YFD2400405) （ZSYYJ-20230803-0003）
Benthic Fishery Habitat Conservation Survey Project in the Key Protected Area of Ma'an Archipelago(ZSYYJ-20230803-0003) （ZSYYJ-20230803-0003）
