气候变化领域集成服务门户(CCPortal): Shrub and precipitation interactions shape functional diversity of nematode communities on the Qinghai-Tibet Plateau

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DOI	10.1111/gcb.16638
	Shrub and precipitation interactions shape functional diversity of nematode communities on the Qinghai-Tibet Plateau
	Zhang, Anning; Chen, Shuyan; Chen, Jingwei; Cui, Hanwen; Jiang, Xiaoxuan; Xiao, Sa; Wang, Jiajia; Gao, Haining; An, Lizhe; Cardoso, Pedro
发表日期	2023
ISSN	1354-1013
EISSN	1365-2486
起始页码	2746
结束页码	2758
卷号	29 期号:10
英文摘要	Land use and climate change alter biodiversity patterns and ecosystem functioning worldwide. Land abandonment with consequent shrub encroachment and changes in precipitation gradients are known factors in global change. Yet, the consequences of interactions between these factors on the functional diversity of belowground communities remain insufficiently explored. Here, we investigated the dominant shrub effects on the functional diversity of soil nematode communities along a precipitation gradient on the Qinghai-Tibet Plateau. We collected three functional traits (life-history C-P value, body mass, and diet) and calculated the functional alpha and beta diversity of nematode communities using kernel density n-dimensional hypervolumes. We found that shrubs did not significantly alter the functional richness and dispersion, but significantly decreased the functional beta diversity of nematode communities in a pattern of functional homogenization. Shrubs benefited nematodes with longer life-history, larger body mass, and higher trophic levels. Moreover, the shrub effects on the functional diversity of nematodes depended strongly on precipitation. Increasing precipitation reversed the effects shrubs have on the functional richness and dispersion from negative to positive but amplified the negative effects shrubs have on functional beta diversity of nematodes. Benefactor shrubs had stronger effects on the functional alpha and beta diversity of nematodes than allelopathic shrubs along a precipitation gradient. A piecewise structural equation model showed that shrubs and its interactions with precipitation indirectly increased the functional richness and dispersion through plant biomass and soil total nitrogen, whereas it directly decreased the functional beta diversity. Our study reveals the expected changes in soil nematode functional diversity following shrub encroachment and precipitation, advancing our understanding of global climate change on nematode communities on the Qinghai-Tibet Plateau.
关键词	beta diversity functional diversity functional homogenization hypervolumes precipitation gradient soil nematodes
英文关键词	PLANT-PLANT INTERACTIONS; BIOTIC HOMOGENIZATION; BETA DIVERSITY; SOIL; BIODIVERSITY; GRASSLAND; ENCROACHMENT; PATTERNS; GRADIENT; ROLES
WOS研究方向	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS记录号	WOS:000941093900001
来源期刊	GLOBAL CHANGE BIOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283043
作者单位	Lanzhou University; Lanzhou University; Hexi University; Lanzhou University
推荐引用方式 GB/T 7714	Zhang, Anning,Chen, Shuyan,Chen, Jingwei,et al. Shrub and precipitation interactions shape functional diversity of nematode communities on the Qinghai-Tibet Plateau[J],2023,29(10).
APA	Zhang, Anning.,Chen, Shuyan.,Chen, Jingwei.,Cui, Hanwen.,Jiang, Xiaoxuan.,...&Cardoso, Pedro.(2023).Shrub and precipitation interactions shape functional diversity of nematode communities on the Qinghai-Tibet Plateau.GLOBAL CHANGE BIOLOGY,29(10).
MLA	Zhang, Anning,et al."Shrub and precipitation interactions shape functional diversity of nematode communities on the Qinghai-Tibet Plateau".GLOBAL CHANGE BIOLOGY 29.10(2023).