纳木措不同水文期水体酵母菌影响因素分析

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Abstract Structure of the culturable yeast community in Nam Co Lake was investigated in August 2020 (wet season) and May 2021 (dry season). As a result, 2411 yeast isolates belonging to 33 genera (70 species) were identified. Bioinformatics and statistical analysis indicated that the total abundance, species composition and community structure of yeasts were significantly different between different periods. Moreover, pH, electrical conductivity, chemical oxygen demand, and total nitrogen in the dry season were significantly higher than those in the wet season. The neutral community model and correlation analysis showed that the yeast community structure was more influenced by deterministic processes, and ammonia nitrogen, total phosphorus and chemical oxygen demand were the remarkable factors that could influence the yeast community structure in Nam Co Lake. Niche measurement indicated that niche breadth and niche overlap value of the dominant species of yeasts in the dry season were lower than those in the wet season. Environmental factors have larger impact on resource utilization pattern and interspecific relationship of the dominant yeast species. Water quality monitoring would contribute to the conservation of yeast resources in Nam Co Lake, especially during the dry season.

Key words： Nam Co Lake yeast wet season dry season niche

Received: 25 August 2022

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X172

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	WANG Yan-hong
	HAO Zhao
	XUE Wen-kai
	MENG Hua-dan-shang
	DE Ji
	GUO Xiao-fang

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WANG Yan-hong,HAO Zhao,XUE Wen-kai等. Environmental factors affecting yeast community structure during different hydrological periods in Nam Co Lake[J]. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(4): 2028-2038.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2023/V43/I4/2028

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