中国水产科学2025，Vol.32Issue(5)：675-688,14.DOI:10.12264/JFSC2025-0021
长江口崇明东滩潮沟系统水文连通性对鱼类群落分布的影响
Impact of hydrological connectivity of tidal creek system in the Chongming Dongtan of the Yangtze River Estuary on distribution of fish communities
摘要
Abstract
Hydrological connectivity is one of the key characteristics that reflect the health and function of estuarine wetland ecosystems,and it has a significant impact on the distribution of estuarine fish communities.This study analyzed the dynamic hydrological connectivity of tidal creeks in the Chongming Dongtan area of the Yangtze River Estuary under different tidal states and its influence on fish community distribution,aiming to provide a scientific basis for the ecological restoration,biodiversity conservation,and water resource management of estuarine wetlands.Twelve hydrological connectivity indicators related to hydrological dynamics and landscape dimensions were selected to explore the relationships and underlying mechanisms between hydrological connectivity patterns and fish distribution patterns.The results showed that factors such as tidal range,the duration of hydrological connection,the duration of flooded retention,the number of nodes,the number of river chains,and the node connection rate β are key hydrological connectivity factors.Canonical correlation analysis(CCA)indicated that the sampling regions within the tidal creek system could be divided into five distinct hydrological connectivity areas,i.e.,the high connectivity area during spring tides,the low connectivity area during spring tides,the high connectivity area during neap tides,the low connectivity area during neap tides,and the long-term inundation area.Among them,the high connectivity areas during spring tides,the high connectivity areas during neap tides,and the long-term inundation area are the main habitats of dominant fish species.Dominant fish species exhibited different preferences for different hydrologically connected areas.For example,Xenocypris macrolepis and Pelteobagrus nitidus tended to inhabit the high hydrological connectivity areas during spring tides.Lateolabrax maculatus,Mugilidae,and Gobiidae exhibited a preference for high hydrological connectivity areas during neap tides.Juvenile fish such as Coilia ectenes and Protosalanx chinensis preferred to inhabit areas at the mouths of tidal creeks or near the shore.These findings demonstrate that estuarine tidal creek fish actively exercise selection and exhibit preferences for different hydrologically connected habitats under the influence of tides,which are related to their swimming capabilities,body sizes,and feeding behaviors.This study provides a scientific basis for the ecological restoration of estuarine wetlands and the conservation of fish biodiversity.It also helps to formulate strategies for regulating hydrological connectivity in wetland water resource management,thereby promoting the sustainable development of such ecosystems.关键词
河口湿地/鱼类群落/水文连通性/潮汐动态/栖息地偏好Key words
estuarine wetland/fish community/hydrological connectivity/tidal dynamics/habitat preference分类
农业科技引用本文复制引用
费姝洁,张婷婷,赵峰,张涛,杨刚,王思凯..长江口崇明东滩潮沟系统水文连通性对鱼类群落分布的影响[J].中国水产科学,2025,32(5):675-688,14.基金项目
国家重点研发计划项目(2023YFD2401905) （2023YFD2401905）
国家自然科学基金项目(32071584,32271658) （32071584,32271658）
中央级公益性科研院所基本科研业务费专项(2023TD14). （2023TD14）
