摘要
2023 年 7-9月中旬对金梦海湾进行了连续的水质及浮游植物群落调查,分析了区域水质和浮游植物群落结构特征,在此基础上,采用典范对应分析(CCA)探讨浮游植物群落结构特征与环境因子的相互关系.结果表明,金梦海湾水质基本符合第三类海洋水质标准,并存在磷限制,水温、盐度、DO、无机氮(DIN)、磷酸盐(DIP)、硅酸盐(DISi)平均值分别为 28.7℃、26.20‰、8.59 mg/L、0.322 mg/L、0.013 mg/L、0.93 mg/L.本次调查共检出金梦海湾浮游植物 51 种,其中,硅藻门 19 属 31种,甲藻门 11 属 17 种,裸藻门 1 属 1 种,金藻门 1 属 1 种,原生动物门 1 属 1 种.浮游植物丰度平均为 433.94×104 cells/m3,主要类群演变过程为"中肋骨条藻→裸藻→极小海链藻→尖叶原甲藻→锥状斯克里普藻".典范对应分析结果表明,浮游植物分布主要与水温、盐度、DO、DIN、DIP、DISi、N∶P、Si∶P显著相关.
Abstract
From July to mid-September 2023,a comprehensive investigation and analysis was conducted on the water quality and phytoplankton community in Jinmeng Bay.Based on this,Canonical Correspondence Analysis(CCA)was employed to explore the relationship between environmental factors and phytoplankton community structure.The findings revealed that the water quality at Jinmeng Bay bathing beach generally complied with the third class of marine water quality standards,and there is phosphorus limitation.The average values of water temperature,salinity,DO,DIN,DIP and DISi were 28.7℃,26.20‰,8.59 mg/L,0.322 mg/L,0.013 mg/L,and0.93 mg/L respectively.During this survey period,a total of 51 species were identified among the phytoplankton samples collected at Jinmeng Bay,including Bacillariophyta(31 species),Dinophyta(17 species),Euglenophyta(1 species),Chromophyta(1 species),and protozoa(1 species).The average abundance of phytoplankton was 433.94×104 cells/m3,with an evolutionary trend observed among major groups:Skeletonemacostatum → Euglena spp.→ Thalassiosiraminima → Prorocentrumtriestinum →Scrippsiellatrochoidea.CCA demonstrated significant correlations between phytoplankton distribution and environmental factors such as water temperature,salinity,DO,DIN,DIP,DISi,N∶P,Si∶P.
维普
万方数据