干旱区生态环境知识资源中心(Arid): Surface Stability in Drylands Is Influenced by Dispersal Strategy of Soil Bacteria

Arid

DOI	10.1029/2018JG004932
	Surface Stability in Drylands Is Influenced by Dispersal Strategy of Soil Bacteria
	Elliott, David R.1; Thomas, Andrew D.2; Strong, Craig L.3; Bullard, Joanna 4
通讯作者	Elliott, David R.
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
ISSN	2169-8953
EISSN	2169-8961
出版年	2019
卷号	124 期号:11 页码:3403-3418
英文摘要	Microbial adaptations for survival and dispersal may directly influence landscape stability and potential for dust emission in drylands where biological soil crusts (biocrusts) protect mineral soil surfaces from wind erosion. In the Lake Eyre basin of central Australia we operated a wind tunnel on sandy soils and collected the liberated material, which was subjected to DNA sequencing to identify the microbial community composition. Microbial composition of entrained dust was compared with that of the source sand dune soil in addition to nearby claypan and nebkha soils and water channels that together form a recycling sediment transport system. Wind was found to preferentially liberate 359 identified taxa from sand dunes, whereas 137 identified taxa were found to resist wind erosion. Water channel communities included many taxa in common with the soil samples. We hypothesize that the ease with which soil microbes become airborne is often linked to whether the organism is adapted for dispersal by wind or vegetative growth and that biocrust organisms found in water channels may sometimes use a fluvial dispersal strategy, which exploits rare flooding events to rapidly colonize vast pans that are common in drylands. We explain likely geomorphic implications of microbial dispersal strategies which are a consequence of organisms engineering the environment to provide their particular needs. By identifying microbes fitting expectations for these dispersal strategies based on differential abundance analyses, we provide a new perspective for understanding the role of microbiota in landscape stability.
英文关键词	biocrust soil microbiome dryland dust air
类型	Article
语种	英语
国家	England ; Wales ; Australia
开放获取类型	Green Submitted, hybrid, Green Published
收录类别	SCI-E
WOS记录号	WOS:000496621500001
WOS关键词	BIOLOGICAL CRUSTS ; WIND EROSION ; DESERT SOIL ; SAND DUNES ; SP NOV. ; DIVERSITY ; SEDIMENTS ; MICROBIOLOGY ; COMMUNITIES ; RESISTANCE
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary
WOS研究方向	Environmental Sciences & Ecology ; Geology
EI主题词	2019-11-15
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310856
作者单位	1.Univ Derby, Environm Sustainabil Res Ctr, Derby, England; 2.Aberystwyth Univ, Dept Geog & Earth Sci, Aberystwyth, Dyfed, Wales; 3.Australian Natl Univ, ANU Coll Sci, Fenner Sch Environm & Soc, Canberra, ACT, Australia; 4.Loughborough Univ, Sch Social Polit & Geog Sci, Dept Geog, Loughborough, Leics, England
推荐引用方式 GB/T 7714	Elliott, David R.,Thomas, Andrew D.,Strong, Craig L.,et al. Surface Stability in Drylands Is Influenced by Dispersal Strategy of Soil Bacteria[J],2019,124(11):3403-3418.
APA	Elliott, David R.,Thomas, Andrew D.,Strong, Craig L.,&Bullard, Joanna.(2019).Surface Stability in Drylands Is Influenced by Dispersal Strategy of Soil Bacteria.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,124(11),3403-3418.
MLA	Elliott, David R.,et al."Surface Stability in Drylands Is Influenced by Dispersal Strategy of Soil Bacteria".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 124.11(2019):3403-3418.