贵州不同营养状态水库轮虫多样性及其对环境因子变化的响应  

Rotifer diversity and its response to environmental factors in reservoirs with different nutritional status in Guizhou Province

作　　者：王鹏飞[1,2,3] 刘晨 潘少朴 罗江之 顾太波 邓恺芊 李秋华 WANG Pengfei;LIU Chen;PAN Shaopu;LUO Jiangzhi;GU Taibo;DENG Kaiqian;LI Qiuhua(Key Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou Province,Guizhou Normal University,Guiyang 550001,China;Guizhou International Cooperative Research Base-International Joint Research Center for Water Ecology,Guiyang 550001,China;Guizhou Plateau Reservoir Water Environmental Protection and Ecological Restoration Engineering Technology Research Center,Guiyang 550001,China)

机构地区：[1]贵州师范大学,贵州省山地环境信息系统和生态环境保护重点实验室,贵阳550001 [2]贵州省国际合作研究基地水生态国际联合研究中心,贵阳550001 [3]贵州省高原水库水环境保护与生态修复工程技术研究中心,贵阳550001

出　　处：《生态学杂志》2025年第1期164-174,共11页Chinese Journal of Ecology

基　　金：科技部基础资源调查项目(2019FY101900);贵州省科技厅项目(黔科合平台人才[2020]6009号、黔科合支撑[2023]213号)资助。

摘　　要：为揭示贵州高原不同营养状态水库的轮虫生物多样性特征及其对环境因子变化的响应,采用综合营养状态指数(TLI)、非度量多维尺度分析(NMDS)、冗余分析(RDA)等研究方法,于2020年10月、2021年4月、6月和8月对海龙水库、烂沟水库、构皮滩水库、万峰水库4座水库的轮虫群落结构及水体理化指标进行调查。结果表明:4座水库共检出轮虫37种,其中海龙水库25种、烂沟水库25种、构皮滩水库30种、万峰水库22种;优势种为螺形龟甲轮虫(Keratella cochlearis)、剪形臂尾轮虫(Brachionus forficula)、广布多肢轮虫(Polyarthra vnlgaris)等16种;海龙、烂沟、构皮滩和万峰4座水库的轮虫平均丰度分别为212、568、137和102 ind·L^(-1),平均生物量分别为43.23、41.19、13.93和8.89μg·L^(-1);海龙、烂沟、构皮滩和万峰4座水库Shannon多样性指数均值分别为1.09、1.09、0.92和0.83,Margalef丰富度指数均值分别为1.30、1.45、1.12和0.94,Pielou均匀度指数均值分别为0.62、0.58、0.60和0.55;NMDS结果表明,轻度富营养化水库与中营养水库轮虫群落结构在2020年10月和2021年4月存在显著差异(P<0.01);RDA结果表明,叶绿素a、总磷和水温是影响海龙水库轮虫群落变化的主要环境因子,铵氮、叶绿素a和总磷是影响烂沟水库轮虫群落变化的主要环境因子,水温和透明度是影响构皮滩和万峰水库轮虫群落变化的最主要环境因子。To understand the biodiversity characteristics of rotifers in reservoirs with different nutritional status in Guizhou Plateau and their responses to changes in environmental factors, we investigated the physicochemical parameters of water, and community structure of rotifers in Hailong Reservoir, Langou Reservoir, Gupitan Reservoir and Wanfeng Reservoir in October 2020, April, June and August 2021. Data were analyzed using the methods of trophic level index(TLI), non-metric multidimensional scaling(NMDS) and redundancy analysis(RDA). The results showed that 37 rotifer species were detected in the four reservoirs, with 25, 25, 30, and 22 species in Hailong Reservoir, Langou Reservoir, Goupitan reservoir, and Wanfeng Reservoir, respectively. There were 16 dominant rotifer species, including Keratella cochlearis, Brachionus forficula, Polyarthra vnlgaris. The average abundance of rotifers in Hailong, Langou, Goupitan and Wanfeng reservoirs was 212, 568, 137 and 102 ind·L^(-1), and the average biomass was 43.23, 41.19, 13.93 and 8.89 μg·L^(-1), respectively. The average value of Shannon diversity index in Hailong, Langou, Goupitan and Wanfeng reservoirs was 1.09, 1.09, 0.92 and 0.83, and the average value of Margalef richness index was 1.30, 1.45, 1.12 and 0.94, respectively. The average values of Pielou evenness index was 0.62, 0.58, 0.60 and 0.55, respectively. The results of NMDS showed that the community structure of rotifers in mildly eutrophicated reservoir was significantly different from that in mesotrophic reservoirs in October 2020 and April 2021(P<0.01). The results of RDA showed that chlorophyll a, total phosphorus, and water temperature were the main environmental factors affecting the changes of rotifer community in Hailong Reservoir, ammonium nitrogen, chlorophyll a and total phosphorus were the main environmental factors affecting the compositional changes of rotifer community in Langou Reservoir, and water temperature and transparency were the main environmental factors affecting the compositional

关 键 词：贵州水库 轮虫 营养状态 生物多样性 环境因子 

分 类 号：X524[环境科学与工程—环境工程] Q958.8[生物学—动物学]