漳浦三倍体牡蛎养殖区浮游植物群落特征及其影响因子分析-《集美大学学报（自然科学版）》

文章信息/Info

Title:: Characteristics of Phytoplankton Communities in Zhangpu Triploid Oyster Farming Area and Their Relationship with Influencing Factors

作者:: 许翠娅1; 2; 杨芳1; 2; 陈小红1; 2; 郑盛华1; 2; 魏姗姗1; 2; 林永青1; 2; 席英玉1; .福建省水产研究所，福建厦门 361013；2.福建省海洋生物增养殖与高值化利用重点实验室，福建厦门 361013

Author(s):: XU Cuiya1; 2; YANG Fang1; 2; CHEN Xiaohong1; 2; ZHENG Shenghua1; 2; WEI Shanshan1; 2; LIN Yongqing1; 2; XI Yingyu1; 2; Fisheries Research Institute of Fujian,Xiamen 361013,China；2.Key Laboratory of Cultivation and High-Value Utilization of Marine Organisms in Fujian Province,Xiamen 361013,China

Keywords:: phytoplankton; triploid oyster; Longmei Bay; Feicui Bay; community characteristics; environmental factor

摘要:: 为研究三倍体牡蛎养殖区浮游植物群落特征及其影响因子，于2021年12月至2022年9月，对漳浦龙美湾和翡翠湾三倍体牡蛎养殖区开展逐月调查，分析了浮游植物种类组成、丰度变化及其与海洋环境因子的相关性。结果表明：浮游植物共有7门140种，其中硅藻门104种，甲藻门30种，金藻门2种，蓝藻门、裸藻门、绿藻门、原生动物门各1种，优势种为海洋原甲藻(Prorocentrum micans)、柔弱拟菱形藻(Pseudo-nitzschia delicatissima)、中肋骨条藻(Skeletonema costatum)、窄隙角毛藻(Chaetoceros affinis)。浮游植物丰度月均值的波动范围为2.16×104～1.89×106 cells/L，平均为3.96×105 cells/L。甲藻丰度占比较高，平均占总丰度的37.7%，推测主要为外海水系和沿岸流带来的外源性甲藻。冗余分析表明，与浮游植物优势种丰度密切相关的主要影响因子是pH、水温、无机氮和活性磷酸盐。

Abstract:: From December 2021 to September 2022,monthly surveys were conducted in the triploid oyster farming areas of Longmei Bay and Feicui Bay in Zhangpu to investigate the characteristics of the phytoplankton communities and their influencing factors.The analysis focused on the composition of phytoplankton species,changes in abundance,and their correlation with marine environmental factors.The results revealed a total of 140 species across seven phyla,including 104 in the Bacillariophyta,30 in the Dinophyta,and 2 in the Chrysophyta,with one species each in Cyanophyta,Cryptophyta,Chlorophyta and Protozoa.Dominant species included Prorocentrum micans,Pseudo-nitzschia delicatissima,Skeletonema costatum and Chaetoceros affinis.The monthly average fluctuation range of phytoplankton abundance was 2.16×104 to 1.89×106 cells/L,with an overall average of 3.96×105 cells/L.Dinoflagellates exhibited a high abundance,averaging 37.7% of the total,suggesting the influence of exogenous dinoflagellates from offshore water systems and coastal currents.Redundancy analysis indicated that pH,water temperature,inorganic nitrogen and active phosphate were the primary factors closely associated with the abundance of dominant phytoplankton species.