干旱区生态环境知识资源中心(Arid): Interactions of Microhabitat and Time Control Grassland Bacterial and Fungal Composition

Arid

DOI	10.3389/fevo.2019.00367
	Interactions of Microhabitat and Time Control Grassland Bacterial and Fungal Composition
	Albright, Michaeline B. N.1; Mueller, Rebecca C.1,2; Gallegos-Graves, La Verne 1; Belnap, Jayne3 ; Reed, Sasha C.3; Kuske, Cheryl R.1
通讯作者	Albright, Michaeline B. N. ; Kuske, Cheryl R.
来源期刊	FRONTIERS IN ECOLOGY AND EVOLUTION
ISSN	2296-701X
出版年	2019
卷号	7
英文摘要	Dryland grasslands are vast and globally important and, as in all terrestrial ecosystems, soil microbial communities play fundamental roles in regulating dryland ecosystem function. A typical characteristic of drylands is the spatial mosaic of vascular plant cover surrounded by interspace soils, where biological soil crusts (biocrusts)-a complex community of organisms including bacteria, fungi, algae, mosses, and lichens-are common. The implications of this heterogeneity, where plants and biocrust cover co-occur, are often explored in the context of soil fertility and hydrology, but rarely has the impact of these multiple microhabitat types been simultaneously explored to determine the influence on bacterial and fungal communities, key biological players in these ecosystems. Further, our understanding of the temporal dynamics of bacterial and fungal communities in grasslands, and of how these dynamics depend on the microhabitat within the ecosystem, is notably poor. Here we used a temporally and spatially explicit approach to assess bacterial and fungal communities in a grassland on the Colorado Plateau, and to link variation in these communities to edaphic characteristics. We found that microhabitat (e.g., vascular plant rhizosphere, biocrust, and below biocrust) was the strongest driver of differences in bacterial and fungal community richness, diversity, and composition. Microhabitat type also significantly mediated the impact of temporal change in shaping community composition. Taken together, 29% of the variation in bacterial community composition could be explained by microhabitat, date, and microhabitat-by-date interactions, while only 11% of the variation in fungal community composition could be explained by the same factors, suggesting important differences in community assembly processes. Soil microbial communities dictate myriad critical ecosystem functions, thus understanding the factors that control their compostition is crucial to considering and forecasting how terrestrial ecosystems work. Overall, this case study provides insights for future studies on the spatial and temporal dynamics of bacterial and fungal communities in dryland grasslands.
英文关键词	biological soil crusts diversity temporal dynamics fungi bacteria
类型	Article
语种	英语
国家	USA
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000496948100001
WOS关键词	BIOLOGICAL SOIL CRUSTS ; MICROBIAL COMMUNITY STRUCTURE ; TEMPORAL VARIATION ; COLORADO PLATEAU ; COOL DESERT ; DIVERSITY ; PATTERNS ; CYANOBACTERIA ; DISTURBANCE ; CHEATGRASS
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
EI主题词	2019-10-09
来源机构	United States Geological Survey
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310266
作者单位	1.Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA; 2.Montana State Univ, Ctr Biofilm Engn, Bozeman, MT 59717 USA; 3.US Geol Survey, Southwest Biol Sci Ctr, Moab, UT USA
推荐引用方式 GB/T 7714	Albright, Michaeline B. N.,Mueller, Rebecca C.,Gallegos-Graves, La Verne,et al. Interactions of Microhabitat and Time Control Grassland Bacterial and Fungal Composition[J]. United States Geological Survey,2019,7.
APA	Albright, Michaeline B. N.,Mueller, Rebecca C.,Gallegos-Graves, La Verne,Belnap, Jayne,Reed, Sasha C.,&Kuske, Cheryl R..(2019).Interactions of Microhabitat and Time Control Grassland Bacterial and Fungal Composition.FRONTIERS IN ECOLOGY AND EVOLUTION,7.
MLA	Albright, Michaeline B. N.,et al."Interactions of Microhabitat and Time Control Grassland Bacterial and Fungal Composition".FRONTIERS IN ECOLOGY AND EVOLUTION 7(2019).