Jiaogen Zhou*, Yang Wang and Qiuliang Lei Pages 1178 - 1186 ( 9 )
Background: In rural China, many natural water bodies and farmlands have been converted into fish farming ponds as an economic developmental strategy. There is still a limited understanding of how the diversity and structure of microbial communities change in nature and become managed fish pond ecosystems.
Objective: We aimed to identify the changes of the diversity and structure of microbial community and driving mechanism in pond ecosystems.
Methods: The datasets of 16S rRNA amplicon sequencing and the concentrations of N and P fractions were achieved in water samples of pond ecosystems. Bioinformatics analysis was used to analyze the diversity and structure of the microbial communities.
Results: Our results indicated that the diversity and structure of the microbial communities in the natural ponds were significantly different from ones in managed fish ponds. The nutrients of N and P and water environmental factors were responsible for 46.3% and 19.5% of the changes in the structure and diversity of the microbial community, respectively.
Conclusion: The N and P fractions and water environmental factors influenced the microbial community structure and diversity in pond ecosystems. Fish farming indirectly affected the microbial community by altering the contents of N and P fractions in water bodies of ponds, when a natural pond was converted into a managed fish pond.
Functional diversity, microbial community, N and P fractions, OUT annotation, pond ecosystems, 16S rRNA amplicon sequencing, water quality.
School of Urban and Environmental Science, Huaiyin Normal University, Jiangsu 223300, School of Urban and Environmental Science, Huaiyin Normal University, Jiangsu 223300, Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081