生态学报2025，Vol.45Issue(12)：5637-5648,12.DOI:10.20103/j.stxb.202407231733
九龙江河口大型底栖动物多样性格局及其影响因素
Spatial patterns of macro-benthic faunal diversity and its impact factors in the Jiulongjiang Estuary
摘要
Abstract
The Jiulongjiang Estuary,located between the eastern coastal waters of Zhangzhou City and the western coastal waters of Xiamen City,features a broad salinity range(1.8‰-28.2‰)and is subject to frequent shipping and fishery activities.In 2022,quarterly survey were conducted at eight stations to investigate macro-benthic faunal diversity,distribution patterns,and influencing factors within this estuarine area.A total of 101 macro-benthic faunal taxa were identified,averaging a density of 376.3 ind./m2 and a wet biomass of 4.92 g/m2,predominantly consisting of species with small body sizes.The dominant species common across the mixing zone(El-E4)and marine zone(E5-E8)were Corophium sp.,Mediomastus sp.,and Gammarus gregoryi.A one-way ANOVA revealed significant differences in the Shannon-Wiener diversity index(H'),Margalef richness index(D),and Pielou evenness index(J')among stations.Mantel analysis indicated that polychaete communities were significantly influenced by phosphorus-related parameters(phosphate[PO43-],total particulate phosphorus[TPP],total phosphorus[TP])and cyanobacteria biomass.Pearson correlation analysis showed that macro-benthic faunal diversity was inversely correlated with nitrogen parameters(nitrite-N[NO2--N],nitrate-N[NO3--N],dissolved inorganic nitrogen[DIN])and phosphorus parameters(TP,total dissolved phosphorus[TDP],TPP)while showing positive correlations with salinity,conductivity,and total dissolved solids(TDS).The random forest model identified TDP as the primary factor influencing macro-benthic faunal diversity.Significant seasonal differences were also observed in macro-benthic faunal community composition.Overall,the diversity patterns of macro-benthic fauna were jointly regulated by salinity,nitrogen,and phosphorus,with potential disturbances at certain stations linked to hydrodynamic conditions,substrate types,and construction activities.Long-term monitoring in the Jiulongjiang Estuary is necessary to clarify further the driving factors of macro-benthic faunal diversity patterns.关键词
九龙江河口/大型底栖动物/群落结构/多样性格局Key words
Jiulongjiang Estuary/macro-benthic fauna/community structure/diversity patterns引用本文复制引用
曾圣,杨德援,杨盛昌,蔡立哲,王飞飞,曹文志..九龙江河口大型底栖动物多样性格局及其影响因素[J].生态学报,2025,45(12):5637-5648,12.基金项目
国家重点研发计划项目(2022YFF1301301) （2022YFF1301301）
福建省厦门环境监测中心站环保科技项目(2022S01) （2022S01）
