globalchange  > 气候变化与战略
DOI: 10.1002/ldr.3453
论文题名:
Increases in aridity lead to drastic shifts in the assembly of dryland complex microbial networks
作者: Delgado-Baquerizo M.; Doulcier G.; Eldridge D.J.; Stouffer D.B.; Maestre F.T.; Wang J.; Powell J.R.; Jeffries T.C.; Singh B.K.
刊名: Land Degradation and Development
ISSN: 10853278
出版年: 2020
卷: 31, 期:3
语种: 英语
英文关键词: bacteria ; climate change ; ecological networks ; fungi ; global change ecology ; plant–soil interactions ; soil functions
Scopus关键词: Bacteria ; Ecology ; Fungi ; Soils ; Ecological networks ; Environmental gradient ; Fungal community compositions ; Global change ; Soil function ; Soil interaction ; Soil microbial community ; Structural equation modeling ; Climate change ; aridity ; climate change ; community composition ; dryland farming ; fungal disease ; global change ; microbial community ; relative abundance ; Bacteria (microorganisms) ; Fungi
英文摘要: We have little information on how and why soil microbial community assembly will respond to predicted increases in aridity by the end of this century. Here, we used correlation networks and structural equation modeling to assess the changes in the abundance of the ecological clusters including potential winner and loser microbial taxa associated with predicted increases in aridity. To do this, we conducted a field survey in an environmental gradient from eastern Australia and obtained information on bacterial and fungal community composition for 120 soil samples and multiple abiotic and biotic factors. Overall, our structural equation model explained 83% of the variance in the two mesic modules. Increases in aridity led to marked shifts in the abundance of the two major microbial modules found in our network, which accounted for >99% of all phylotypes. In particular, the relative abundance of one of these modules, the Mesic Module #1, which was positively related to multiple soil properties and plant productivity, declined strongly with aridity. Conversely, the relative abundance of a second dominant module (Xeric Module #2) was positively correlated with increases in aridity. Our study provides evidence that network analysis is a useful tool to identify microbial taxa that are either winners or losers under increasing aridity and therefore potentially under changing climates. Our work further suggests that climate change, and associated land degradation, could potentially lead to extensive microbial phylotypes exchange and local extinctions, as demonstrated by the reductions of up to 97% in the relative abundance of microbial taxa within Mesic Module #1. © 2019 John Wiley & Sons, Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159273
Appears in Collections:气候变化与战略

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作者单位: Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia; Institut de Biologie de l'École Normale Supérieure, École Normale Supérieure, PSL Research University, Paris, 75005, France; Centre for Integrative Ecology, School of Biological Sciences, University of Canterbury, Christchurch, New Zealand; Centre for Ecosystem Science, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW, Australia; Departamento de Biología, Geología, Física y Química Inorgánica, Escuela Superior de Ciencias Experimentales y Tecnología, Universidad Rey Juan Carlos, Móstoles, Spain; Global Centre for Land-Based Innovation, Western Sydney University, Penrith South DC, NSW, Australia

Recommended Citation:
Delgado-Baquerizo M.,Doulcier G.,Eldridge D.J.,et al. Increases in aridity lead to drastic shifts in the assembly of dryland complex microbial networks[J]. Land Degradation and Development,2020-01-01,31(3)
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