干旱区生态环境知识资源中心(Arid): Effects of Biological Soil Crusts on Enzyme Activities and Microbial Community in Soils of an Arid Ecosystem

Arid

DOI	10.1007/s00248-018-1219-8
	Effects of Biological Soil Crusts on Enzyme Activities and Microbial Community in Soils of an Arid Ecosystem
	Ghiloufi, Wahida 1; Seo, Juyoung 2; Kim, Jinhyun 2; Chaieb, Mohamed 1; Kang, Hojeong 2
通讯作者	Kang, Hojeong
来源期刊	MICROBIAL ECOLOGY
ISSN	0095-3628
EISSN	1432-184X
出版年	2019
卷号	77 期号:1 页码:201-216
英文摘要	Arid ecosystems constitute 41% of land's surface and play an important role in global carbon cycle. In particular, biological soil crusts (BSC) are known to be a hotspot of carbon fixation as well as mineralization in arid ecosystems. However, little information is available on carbon decomposition and microbes in BSC and key controlling variables for microbial activities in arid ecosystems. The current study, carried out in South Mediterranean arid ecosystem, aimed to evaluate the effects of intact and removed cyanobacteria/lichen crusts on soil properties, soil enzyme activities, and microbial abundances (bacteria and fungi). We compared five different treatments (bare soil, soil with intact cyanobacteria, soil with cyanobacteria removed, soil with intact lichens, and soil with lichens removed) in four different soil layers (0-5, 5-10, 10-15, and 15-20cm). Regardless of soil treatments, activities of hydrolases and water content increased with increasing soil depth. The presence of lichens increased significantly hydrolase activities, which appeared to be associated with greater organic matter, nitrogen, and water contents. However, phenol oxidase was mainly controlled by pH and oxygen availability. Neither fungal nor bacterial abundance exhibited a significant correlation with enzyme activities suggesting that soil enzyme activities are mainly controlled by edaphic and environmental conditions rather than source microbes. Interestingly, the presence of lichens reduced the abundance of bacteria of which mechanism is still to be investigated.
英文关键词	Biological soil crusts Desert Soil properties Enzyme activities Microbial community Soil depth
类型	Article
语种	英语
国家	Tunisia ; South Korea
收录类别	SCI-E
WOS记录号	WOS:000454921500016
WOS关键词	TENGGER DESERT ; SUCCESSIONAL STAGES ; ORGANIC-CARBON ; BACTERIAL DIVERSITY ; DUNE STABILIZATION ; COLORADO PLATEAU ; ABIOTIC FACTORS ; LOESS PLATEAU ; FOREST SOILS ; NITROGEN
WOS类目	Ecology ; Marine & Freshwater Biology ; Microbiology
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Microbiology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217594
作者单位	1.Univ Sfax, Unit Res Plant Biodivers & Ecosyst Arid Environm, Sfax, Tunisia; 2.Yonsei Univ, Sch Civil & Environm Engn, Seoul 03722, South Korea
推荐引用方式 GB/T 7714	Ghiloufi, Wahida,Seo, Juyoung,Kim, Jinhyun,et al. Effects of Biological Soil Crusts on Enzyme Activities and Microbial Community in Soils of an Arid Ecosystem[J],2019,77(1):201-216.
APA	Ghiloufi, Wahida,Seo, Juyoung,Kim, Jinhyun,Chaieb, Mohamed,&Kang, Hojeong.(2019).Effects of Biological Soil Crusts on Enzyme Activities and Microbial Community in Soils of an Arid Ecosystem.MICROBIAL ECOLOGY,77(1),201-216.
MLA	Ghiloufi, Wahida,et al."Effects of Biological Soil Crusts on Enzyme Activities and Microbial Community in Soils of an Arid Ecosystem".MICROBIAL ECOLOGY 77.1(2019):201-216.