Copper Pollution Increases the Resistance of Soil Archaeal Community to Changes in Water Regime

被引:10
|
作者
Li, Jing [1 ,2 ,3 ,4 ]
Liu, Yu-Rong [3 ]
Cui, Li-Juan [1 ,4 ]
Hu, Hang-Wei [5 ]
Wang, Jun-Tao [3 ]
He, Ji-Zheng [3 ,5 ]
机构
[1] Chinese Acad Forestry, Inst Wetland Res, Beijing 100091, Peoples R China
[2] Beijing Key Lab Wetland Ecol Funct & Restorat, Beijing, Peoples R China
[3] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China
[4] Beijing Hanshiqiao Natl Wetland Ecosyst Res Stn, Beijing 101399, Peoples R China
[5] Univ Melbourne, Fac Vet & Agr Sci, Parkville, Vic 3010, Australia
关键词
Archaea; Abundance; Resistance; Community composition; Copper pollution; Dry-rewetting disturbance; AMMONIA-OXIDIZING BACTERIA; METHANOGENIC ARCHAEA; MICROBIAL COMMUNITY; DIVERSITY; STRESS; RESILIENCE; SEQUENCES; ABUNDANCE; NITRIFICATION; BIODIVERSITY;
D O I
10.1007/s00248-017-0992-0
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Increasing efforts have been devoted to exploring the impact of environmental stresses on soil bacterial communities, but the work on the archaeal community is seldom. Here, we constructed microcosm experiments to investigate the responses of archaeal communities to the subsequent dry-rewetting (DW) disturbance in two contrasting soils (fluvo-aquic and red soil) after 6 years of copper pollution. Ten DW cycles were exerted on the two soils with different copper levels, followed by a 6-week recovery period. In both soils, archaeal diversity (Shannon index) in the high copper-level treatments increased over the incubation period, and archaeal community structure changed remarkably as revealed by the non-metric multidimensional scaling ordinations. In both soils, copper pollution altered the response of dominant operational taxonomic units (OTUs) to the DW disturbance. Throughout the incubation and recovery period, the resistance of archaeal abundance to the DW disturbance was higher in the copper-polluted soils than soils without pollution. Taken together, copper pollution altered the response of soil archaeal diversity and community composition to the DW disturbance and increased the resistance of the archaeal abundance. These findings have important implications for understanding soil microbial responses to ongoing environmental change.
引用
收藏
页码:877 / 887
页数:11
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