干旱区生态环境知识资源中心(Arid): Snowpack shifts cyanobacterial community in biological soil crusts

Arid

	Snowpack shifts cyanobacterial community in biological soil crusts
	Zhang Bingchang; Zhang Yongqing; Zhou Xiaobing; Li Xiangzhen; Zhang Yuanming
来源期刊	干旱区科学
ISSN	1674-6767
出版年	2021
卷号	13 期号:3 页码:1674-6767
英文摘要	Winter snowpack is an important source of moisture that influences the development of biological soil crusts (BSCs) in desert ecosystems. Cyanobacteria are important photosynthetic organisms in BSCs. However, the responses of the cyanobacterial community in BSCs to snowpack, snow depth and melting snow are still unknown. In this study, we investigated the cyanobacterial community composition and diversity in BSCs under different snow treatments (doubled snow, ambient snow and removed snow) and three snow stages (stage 1, snowpack; stage 2, melting snow; and stage 3, melted snow) in the Gurbantunggut Desert in China. In stages 1 and 2, Cyanobacteria were the dominant phylum in the bacterial community in the removed snow treatment, whereas Proteobacteria and Bacteroidetes were abundant in the bacterial communities in the ambient snow and doubled snow treatments. The relative abundances of Proteobacteria and Bacteroidetes increased with increasing snow depth. The relative abundances of Cyanobacteria and other bacterial taxa were affected mainly by soil temperature and irradiance. In stages 2 and 3, the relative abundance of Cyanobacteria increased quickly due to the suitable soil moisture and irradiance conditions. Oscillatoriales, Chroococcales, Nostocales, Synechococcales and unclassified Cyanobacteria were detected in all the snow treatments, and the most dominant taxa were Oscillatoriales and Chroococcales. Various cyanobacterial taxa showed different responses to snowpack. Soil moisture and irradiance were the two critical factors shaping the cyanobacterial community structure. The snowpack depth and duration altered the soil surface irradiance, soil moisture and other soil properties, which consequently were selected for different cyanobacterial communities. Thus, local microenvironmental filtering (niche selection) caused by snow conditions may be a dominant process driving shifts in the cyanobacterial community in BSCs.
英文关键词	cyanobacterial diversity community structure biological soil crusts snowpack niche selection
类型	Article
语种	英语
国家	中国
收录类别	CSCD
WOS类目	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:6955762
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/365037
作者单位	Zhang Bingchang, Geographical Science College, Shanxi Normal University;;Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, ;;State Key Laboratory of Desert and Oasis Ecology, Linfen;;Urumqi, ;; 041004;;830011.; Zhang Yongqing, Geographical Science College, Shanxi Normal University, Linfen, Shanxi 041004, China.; Zhou Xiaobing, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, State Key Laboratory of Desert and Oasis Ecology, Urumqi, Xinjiang 830011, China.; Zhang Yuanming, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, State Key Laboratory of Desert and Oasis Ecology, Urumqi, Xinjiang 830011, China.; Li Xiangzhen, College of Resources and Environment, Fujian Agriculture and Forestry University, Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, Fuzhou, Fujian 350002, China.
推荐引用方式 GB/T 7714	Zhang Bingchang,Zhang Yongqing,Zhou Xiaobing,et al. Snowpack shifts cyanobacterial community in biological soil crusts[J],2021,13(3):1674-6767.
APA	Zhang Bingchang,Zhang Yongqing,Zhou Xiaobing,Li Xiangzhen,&Zhang Yuanming.(2021).Snowpack shifts cyanobacterial community in biological soil crusts.干旱区科学,13(3),1674-6767.
MLA	Zhang Bingchang,et al."Snowpack shifts cyanobacterial community in biological soil crusts".干旱区科学 13.3(2021):1674-6767.