气候变化领域集成服务门户(CCPortal): Body size induced changes in metabolic carbon of soil nematodes under N deposition and precipitation regime change in a temperate grassland

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DOI	10.1186/s13717-024-00484-x
	Body size induced changes in metabolic carbon of soil nematodes under N deposition and precipitation regime change in a temperate grassland
	Cui, Shuyan; Mo, Xiaomei; Zheng, Guo
发表日期	2024
EISSN	2192-1709
起始页码	13
结束页码	1
卷号	13 期号:1
英文摘要	Background Global climate change has resulted in precipitation regimes exhibiting an increasing trend in rainfall intensity but a reduction in its frequency. Nitrogen (N) deposition is a crucial component of the global N cycling. Nematode body size is a trait that responds to climate change and is used as a standard trait-based indicator in soil community analysis. Variations in body size influence metabolic carbon (C). We examined the ways by which body size and metabolic C of nematodes respond to changing precipitation regimes and how N deposition regulates these responses by an 8-year manipulative experiment. Methods Nematode body size was indicated by the community-weighted mean (CWM) mass. We quantified C metabolism components of soil nematodes including production C, respiration C, and corresponding C use efficiency (CUE) under different precipitation intensities and N addition in a semi-arid steppe on the Mongolian Plateau. The Mantel test was used to determine the correlations between CWM, CUE and environmental factors. The partial least squares path modeling (PLS-PM) was conducted to quantify direct or indirect contributions among latent variables. Results We found that heavy precipitation intensity increased the CWM mass of total nematodes and omnivores-predators without N addition. N addition decreased CWM mass of bacterivores across all the precipitation intensity treatments. Stronger precipitation intensities might be favorable for nematode production and respiration C. Variations in the nematode CWM mass drove the CUE to change with N addition. Conclusions Our findings provide new insights into the mechanisms underlying nematode body size and C metabolism, and highlight that explorative studies, such as manipulative experiments, are needed to identify traits underlying size-related effects and to investigate how they affect CUE of nematodes. These efforts may increase our understanding of how changes in precipitation regimes and N deposition may alter soil nematode communities in grassland ecosystems.
英文关键词	Community-weighted mean; Metabolic footprint; Nitrogen addition; Precipitation intensity
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology ; Environmental Sciences
WOS记录号	WOS:001154019100001
来源期刊	ECOLOGICAL PROCESSES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/290391
作者单位	Shenyang Normal University
推荐引用方式 GB/T 7714	Cui, Shuyan,Mo, Xiaomei,Zheng, Guo. Body size induced changes in metabolic carbon of soil nematodes under N deposition and precipitation regime change in a temperate grassland[J],2024,13(1).
APA	Cui, Shuyan,Mo, Xiaomei,&Zheng, Guo.(2024).Body size induced changes in metabolic carbon of soil nematodes under N deposition and precipitation regime change in a temperate grassland.ECOLOGICAL PROCESSES,13(1).
MLA	Cui, Shuyan,et al."Body size induced changes in metabolic carbon of soil nematodes under N deposition and precipitation regime change in a temperate grassland".ECOLOGICAL PROCESSES 13.1(2024).