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题名: Assessing Level of Development and Successional Stages in Biological Soil Crusts with Biological Indicators
作者: Lan, Shubin1; Wu, Li1; Zhang, Delu2; Hu, Chunxiang1
通讯作者: Hu, CX (reprint author), Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China.
关键词: ALGAL CRUSTS ; CYANOBACTERIAL CRUSTS ; NITROGEN-FIXATION ; COLORADO PLATEAU ; CO2 EXCHANGE ; DESERT SOIL ; DIVERSITY ; SURFACE ; WATER ; MICROSTRUCTURE
刊名: MICROBIAL ECOLOGY
发表日期: 2013-08-01
DOI: 10.1007/s00248-013-0191-6
卷: 66, 期:2, 页:394-403
收录类别: SCI
文章类型: Article
部门归属: [Lan, Shubin ; Wu, Li ; Hu, Chunxiang] Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China ; [Zhang, Delu] Wuhan Univ Technol, Dept Biol Sci & Biotechnol, Wuhan 430070, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National Natural Science Foundation of China [31170464]
类目[WOS]: Ecology ; Marine & Freshwater Biology ; Microbiology
研究领域[WOS]: Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Microbiology
摘要: Biological soil crusts (BSCs) perform vital ecosystem services, but the difference in biological components or developmental level still affects the rate and type of these services. In order to differentiate crust successional stages in quantity and analyze the relationship between crust developmental level and successional stages, this work determined several biological indicators in a series of different developmental BSCs in the Shapotou region of China. The results showed that crust developmental level (level of development index) can be well indicated by crust biological indicators. Photosynthetic biomass was the most appropriate to differentiate crust successional stages, although both photosynthetic biomass and respiration intensity increased with the development and succession of BSCs. Based on of the different biological compositions, BSCs were quantificationally categorized into different successional stages including cyanobacterial crusts (lichen and moss coverages < 20 %), lichen crusts (lichen coverage > 20 % but moss coverage < 20 %), semi-moss crusts (moss coverage > 20 % but < 75 %), and moss crusts (moss coverage > 75 %). In addition, it was found that cyanobacterial and microalgal biomass first increased as cyanobacterial crusts formed, then decreased when lots of mosses emerged on the crust surface; however nitrogen-fixing cyanobacteria and heterotrophic microbes increased in the later developmental BSCs. The structural adjustment of biological components in the different developmental BSCs may reflect the requirement of crust survival and material transition.
英文摘要: Biological soil crusts (BSCs) perform vital ecosystem services, but the difference in biological components or developmental level still affects the rate and type of these services. In order to differentiate crust successional stages in quantity and analyze the relationship between crust developmental level and successional stages, this work determined several biological indicators in a series of different developmental BSCs in the Shapotou region of China. The results showed that crust developmental level (level of development index) can be well indicated by crust biological indicators. Photosynthetic biomass was the most appropriate to differentiate crust successional stages, although both photosynthetic biomass and respiration intensity increased with the development and succession of BSCs. Based on of the different biological compositions, BSCs were quantificationally categorized into different successional stages including cyanobacterial crusts (lichen and moss coverages < 20 %), lichen crusts (lichen coverage > 20 % but moss coverage < 20 %), semi-moss crusts (moss coverage > 20 % but < 75 %), and moss crusts (moss coverage > 75 %). In addition, it was found that cyanobacterial and microalgal biomass first increased as cyanobacterial crusts formed, then decreased when lots of mosses emerged on the crust surface; however nitrogen-fixing cyanobacteria and heterotrophic microbes increased in the later developmental BSCs. The structural adjustment of biological components in the different developmental BSCs may reflect the requirement of crust survival and material transition.
关键词[WOS]: ALGAL CRUSTS ; CYANOBACTERIAL CRUSTS ; NITROGEN-FIXATION ; COLORADO PLATEAU ; CO2 EXCHANGE ; DESERT SOIL ; DIVERSITY ; SURFACE ; WATER ; MICROSTRUCTURE
语种: 英语
WOS记录号: WOS:000321668900014
ISSN号: 0095-3628
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/19631
Appears in Collections:藻类生物学及应用研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China
2.Wuhan Univ Technol, Dept Biol Sci & Biotechnol, Wuhan 430070, Peoples R China

Recommended Citation:
Lan, Shubin; Wu, Li; Zhang, Delu; Hu, Chunxiang.Assessing Level of Development and Successional Stages in Biological Soil Crusts with Biological Indicators,MICROBIAL ECOLOGY,2013,66(2):394-403
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