Physicochemical Characterization and Microbial Diversity of Calcareous Water in Huanglong Ravine, China—A World’s Heritage Site

Researchers have uncovered significant insights into the microbial diversity and physicochemical characteristics of Huanglong Ravine, a UNESCO World Heritage Site renowned for its calcareous sinter landscape. The study found that water samples from the ravine exhibited moderate eutrophication, with total phosphorus (TP) ranging from 0.2 to 0.3 mg/L and total nitrogen (TN) from 0.46 to 2.09 mg/L. Notably, microorganisms such as Acinetobacter, Pseudomonas, and Brevundimonas were prevalent, with their abundance showing a positive correlation with TP and TN levels. This discovery sheds light on the potential causes of algal blooms in the ravine and provides a scientific foundation for the conservation of its unique calcareous landscape. The study utilized high-throughput sequencing to analyze microbial diversity, offering valuable data for understanding the ecological dynamics of this heritage site.

Xinze Liu, Zhang, J., Gao, W., Li, Q., Tian, C., Lei, N., Qin, B., Zhao, X., Li, Q., & Zhang, W. (2023). Physicochemical Characterization and Microbial Diversity of Calcareous Water in Huanglong Ravine, China—A World’s Heritage Site. Biology Bulletin, 50(4), 696–706. https://doi.org/10.1134/s1062359023600605