Fauna access outweighs litter mixture effect during leaf litter decomposition

doi:10.1016/j.scitotenv.2022.160190

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	Fauna access outweighs litter mixture effect during leaf litter decomposition
	Njoroge,Denis Mburu; Dossa,Gbadamassi G. O.; Ye,Luping; Lin,Xiaoyuan; Schaefer,Douglas; Tomlinson,Kyle; Zuo,Juan; Cornelissen,Johannes H. C.
	2023
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	1879-1026
卷号	860 页码:160190
摘要	Decomposition rates of litter mixtures reflect the combined effects of litter species diversity, litter quality, decom-posers, their interactions with each other and with the environment. The outcomes of those interactions remain am-biguous and past studies have reported conflicting results (e.g., litter mixture richness effects). To date, how litter diversity and soil fauna interactions shape litter mixture decomposition remains poorly understood. Through a sixteen month long common garden litter decomposition experiment, we tested these interaction effects using litterbags of three mesh sizes (micromesh, mesomesh, and macromesh) to disentangle the contributions of different fauna groups categorized by their size at Wuhan botanical garden (subtropical climate). We examined the decomposition of five single commonly available species litters and their full 26 mixtures combination spanning from 2 to 5 species. In total, 2325 litterbags were incubated at the setup of the experiment and partly harvested after 1, 3, 6, 9, and 16 months after exposure to evaluate the mass loss and the combined effects of soil fauna and litter diversity. We predicted that litter mixture effects should increase with increased litter quality dissimilarity, and soil fauna should enhance litter (both single species litter and litter mixtures) decomposition rate. Litter mass loss ranged from 26.9 % to 87.3 %. Soil fauna access to litterbags accelerated mass loss by 29.8 % on average. The contribution of soil mesofauna did not differ from that of soil meso-and macrofauna. Incubation duration and its interactions with litter quality dissimilarities together with soil fauna determined the litter mixture effect. Furthermore, the litter mixture effect weakened as the decomposition progresses. Faunal contribution was broadly additive to the positive mixture effect irrespective of litter species richness or litter dissimilarity. This implies that combining the dissimilarity of mixture species and contribu-tions of different soil fauna provides a more comprehensive understanding of mixed litter decomposition.
关键词	Biodiversity effects Decomposers Ecosystem function Functional diversity Functional traits Litter quality PLANT DIVERSITY SOIL FAUNA QUALITY BIODIVERSITY TRAITS CLIMATE RATES CONSEQUENCES COMMUNITIES CARBON
学科领域	Environmental Sciences & Ecology
DOI	10.1016/j.scitotenv.2022.160190
收录类别	SCI
WOS记录号	WOS:000926945000001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/75408
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Njoroge,Denis Mburu,Dossa,Gbadamassi G. O.,Ye,Luping,et al. Fauna access outweighs litter mixture effect during leaf litter decomposition[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2023,860:160190.
APA	Njoroge,Denis Mburu.,Dossa,Gbadamassi G. O..,Ye,Luping.,Lin,Xiaoyuan.,Schaefer,Douglas.,...&Cornelissen,Johannes H. C..(2023).Fauna access outweighs litter mixture effect during leaf litter decomposition.SCIENCE OF THE TOTAL ENVIRONMENT,860,160190.
MLA	Njoroge,Denis Mburu,et al."Fauna access outweighs litter mixture effect during leaf litter decomposition".SCIENCE OF THE TOTAL ENVIRONMENT 860(2023):160190.

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