Artificial light at night (ALAN) causes shifts in soil communities and functions

被引:6
作者
Cesarz, Simone [1 ,2 ]
Eisenhauer, Nico [1 ,2 ]
Bucher, Solveig Franziska [1 ,3 ]
Ciobanu, Marcel [4 ]
Hines, Jes [1 ,2 ]
机构
[1] German Ctr Integrat Biodivers Res iDiv, D-04103 Leipzig, Germany
[2] Univ Leipzig, Inst Biol, D-04109 Leipzig, Germany
[3] Friedrich Schiller Univ Jena, Inst Ecol & Evolut Herbarium Haussknecht & Bot Gar, Dept Plant Biodivers, D-07743 Jena, Germany
[4] Branch Natl Inst Res & Dev Biol Sci, Inst Biol Res, 48 Republicii St, Cluj Napoca 400015, Romania
关键词
light pollution; biodiversity-ecosystem functioning; bioindicator; belowground; PLANT DIVERSITY; MICROBIAL BIOMASS; BIODIVERSITY; NEMATODES; AVAILABILITY; PERFORMANCE; ABUNDANCE; DRIVERS;
D O I
10.1098/rstb.2022.0366
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Artificial light at night (ALAN) is increasing worldwide, but its effects on the soil system have not yet been investigated. We tested the influence of experimental manipulation of ALAN on two taxa of soil communities (microorganisms and soil nematodes) and three aspects of soil functioning (soil basal respiration, soil microbial biomass and carbon use efficiency) over four and a half months in a highly controlled Ecotron facility. We show that during peak plant biomass, increasing ALAN reduced plant biomass and was also associated with decreased soil water content. This further reduced soil respiration under high ALAN at peak plant biomass, but microbial communities maintained stable biomass across different levels of ALAN and times, demonstrating higher microbial carbon use efficiency under high ALAN. While ALAN did not affect microbial community structure, the abundance of plant-feeding nematodes increased and there was homogenization of nematode communities under higher levels of ALAN, indicating that soil communities may be more vulnerable to additional disturbances at high ALAN. In summary, the effects of ALAN reach into the soil system by altering soil communities and ecosystem functions, and these effects are mediated by changes in plant productivity and soil water content at peak plant biomass.This article is part of the theme issue 'Light pollution in complex ecological systems'.
引用
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页数:12
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