藻类消亡过程中伴生细菌群落功能多样性分析

In this study, the associated bacterial community functional diversity during degradation of the algae was determined, and using the method of substrate utilization profiling (BIOLOG), meanwhile, the number and species of algae were examined using the microscope. The results indicated that Euglenophyta decreased for 58.33% from 0 d to 38 d, while, the smallest degradation of Bacillariophyta for 20.19%. AWCD values increased during the static periods from 0 d to 38 d (P＜0.05). There were significant differences in the pattern and level of carbon sources utilized by the algal associated bacteria. The principal component analysis (PCA) showed that there were differences in the algal associated bacterial community functional diversity during different static stages, and the differentiation of the carbon source was mainly sugar, followed by the amino acid and polymer classes. The Simpson's index (D) was in accordance with Shannon's diversity (H) and species richness (S), it was measured that 18d﹥38d﹥5d﹥0d.