Zheng Cheng, Lu Kai-Hong, Xu Zhen, Zheng Zhong-Ming, Zhu Jin-Yong
Key Laboratory of Applied Marine Biotechnology, Ministry of Education, School of Marine Science, Ningbo University, Ningbo 315211, China.
Huan Jing Ke Xue. 2018 Jun 8;39(6):2688-2697. doi: 10.13227/j.hjkx.201709194.
The succession of phytoplankton communities is affected by pure environmental factors as well as the interaction of various factors. Phytoplankton communities with eleven aquatic abiotic factors and four biotic factors were investigated in the Siminghu Reservoir, and the seasonal succession of phytoplankton FGs related to the biotic and abiotic factors was analyzed. The results suggested that a total of 22 phytoplankton functional groups were identified across the samples, and they were all affiliated with Chlorophyta and Bacillariophyta. An obvious seasonal succession was discovered by NMDS, which were present as D+Lo in summer, D+P+Lo in autumn and winter, and X2+P+MP in spring. In particular, we screened 10 functional groups with biomass significantly associated with the seasonal change in the phytoplankton community. A variance partitioning analysis (VPA) revealed that water temperature-zooplankton covariation and water temperature explained the variation in the phytoplankton functional groups throughout the year. A canonical correspondence analysis (CCA) showed that water temperature, transparency, nitrate nitrogen, and the biomass of zooplankton were the most critical factors determining the community dynamics of phytoplankton.
浮游植物群落的演替受单纯环境因素以及多种因素相互作用的影响。在四明湖水库对具有11种水生非生物因素和4种生物因素的浮游植物群落进行了调查，并分析了与生物和非生物因素相关的浮游植物功能群的季节演替。结果表明，样本中共鉴定出22个浮游植物功能群，它们均隶属于绿藻门和硅藻门。通过非度量多维尺度分析（NMDS）发现了明显的季节演替，夏季为D+Lo，秋冬为D+P+Lo，春季为X2+P+MP。特别是，我们筛选出了10个功能群，其生物量与浮游植物群落的季节变化显著相关。方差分解分析（VPA）表明，水温-浮游动物协变量和水温解释了全年浮游植物功能群的变化。典范对应分析（CCA）表明，水温、透明度、硝态氮和浮游动物生物量是决定浮游植物群落动态的最关键因素。
