基于环境DNA宏条形码技术研究黄河三角洲典型潮沟系统鱼类多样性及其对水文连通性的响应

董志远, 陈琳琳, 张乃鹏, 陈莉, 孙德斌, 倪艳梅, 李宝泉

Response of fish diversity to hydrological connectivity of typical tidal creek system in the Yellow River Delta based on environmental DNA metabarcoding

Zhiyuan Dong, Linlin Chen, Naipeng Zhang, Li Chen, Debin Sun, Yanmei Ni, Baoquan Li

表5 黄河口潮沟鱼类物种序列丰度冗余分析(RDA)

Table 5 Redundancy analysis (RDA) of dominant fish species in the tidal creek waters of Yellow River Estuary

排序轴 Axes 1 2 3 4 特征值 Eigenvalues 0.62 0.251 0.046 0.028 相关系数 Species-environment correlations 0.969 0.992 0.986 0.947 物种数据累积百分比方差 Cumulative percentage variance of species data (%) 62 87.2 91.8 94.7 物种-环境关系累积百分比方差 Cumulative percentage variance of species-environment relation (%) 65.3 91.7 96.6 99.6 总特征值 Sum of all eigenvalues 1 总典范特征值 Sum of all canonical eigenvalues 0.951