Journal
APPLIED SOIL ECOLOGY
Volume 141, Issue -, Pages 79-83Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsoil.2019.05.012
Keywords
Warming; Nitrogen addition; Diel variation; Microarthropods; Temperate grassland
Categories
Funding
- National Basic Research Program of China [2016YFA0602303-1]
- National Natural Science Foundation of China [41430857, 31200331, 31500345, 41671259]
- Program of Introducing Talents of Discipline to Universities [B16011]
- open project program of Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University [130028825]
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Both climate warming and nitrogen addition have the potential to affect soil fauna. The effect of these changes on the diel variation of soil microarthropods motility remains unknown. In northeastern China, in temperate grasslands with limited moisture and nutrients, epigeic microarthropods were captured by pitfall traps and activity-density and species richness of epigeic Collembola and Oribatida were calculated after four years of simulated environmental change by warming and/or nitrogen addition both in daytime and nighttime. Warming with or without nitrogen addition reduced the total activity-density of epigeic Collembola. However, this effect was pronounced only in daytime, but not nighttime. Epigeic Oribatida was not impacted by warming treatment. Nitrogen addition had no effect on epigeic Oribatida and Collembola. Our results indicate that warming has a pronounced, adverse effect on epigeic Collembola in water-limited temperate grassland and that the effect was microarthropod taxon-specific. We conclude that warming could limit the activity-density of epigeic micro-arthropods' species that are not resistant to water deficiency and these alterations would not be alleviated by concurrent nitrogen deposition.
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