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DOI	10.1111/gcb.15209
	Contrasting mechanisms underlie short- and longer-term soil respiration responses to experimental warming in a dryland ecosystem
	Dacal, Marina; Garcia-Palacios, Pablo; Asensio, Sergio; Cano-Diaz, Concha; Gozalo, Beatriz; Ochoa, Victoria; Maestre, Fernando T.
通讯作者	Dacal, M
来源期刊	GLOBAL CHANGE BIOLOGY
ISSN	1354-1013
EISSN	1365-2486
出版年	2020
卷号	26 期号:9 页码:5254-5266
英文摘要	Soil carbon losses to the atmosphere through soil respiration are expected to rise with ongoing temperature increases, but available evidence from mesic biomes suggests that such response disappears after a few years of experimental warming. However, there is lack of empirical basis for these temporal dynamics in soil respiration responses, and for the mechanisms underlying them, in drylands, which collectively form the largest biome on Earth and store 32% of the global soil organic carbon pool. We coupled data from a 10 year warming experiment in a biocrust-dominated dryland ecosystem with laboratory incubations to confront 0-2 years (short-term hereafter) versus 8-10 years (longer-term hereafter) soil respiration responses to warming. Our results showed that increased soil respiration rates with short-term warming observed in areas with high biocrust cover returned to control levels in the longer-term. Warming-induced increases in soil temperature were the main drivers of the short-term soil respiration responses, whereas longer-term soil respiration responses to warming were primarily driven by thermal acclimation and warming-induced reductions in biocrust cover. Our results highlight the importance of evaluating short- and longer-term soil respiration responses to warming as a mean to reduce the uncertainty in predicting the soil carbon-climate feedback in drylands.
英文关键词	biocrusts dryland microbial thermal acclimation short-term versus longer-term warming soil moisture soil respiration soil temperature
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000545580200001
WOS关键词	CLIMATE-CHANGE ; MICROBIAL RESPIRATION ; THERMAL ADAPTATION ; TEMPERATURE-DEPENDENCE ; BIOCRUSTS MODULATE ; CO2 EFFLUX ; CARBON ; DESERT ; CRUSTS ; PRECIPITATION
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324931
作者单位	[Dacal, Marina; Cano-Diaz, Concha] Univ Rey Juan Carlos, Dept Biol & Geol Fis & Quim Inorgan, Mostoles, Spain; [Dacal, Marina; Asensio, Sergio; Gozalo, Beatriz; Ochoa, Victoria; Maestre, Fernando T.] Univ Alicante, Inst Multidisciplinar Estudio Medio Ramon Margale, Alicante, Spain; [Garcia-Palacios, Pablo] CSIC, Inst Ciencias Agr, Madrid, Spain; [Maestre, Fernando T.] Univ Alicante, Dept Ecol, Alicante, Spain
推荐引用方式 GB/T 7714	Dacal, Marina,Garcia-Palacios, Pablo,Asensio, Sergio,et al. Contrasting mechanisms underlie short- and longer-term soil respiration responses to experimental warming in a dryland ecosystem[J],2020,26(9):5254-5266.
APA	Dacal, Marina.,Garcia-Palacios, Pablo.,Asensio, Sergio.,Cano-Diaz, Concha.,Gozalo, Beatriz.,...&Maestre, Fernando T..(2020).Contrasting mechanisms underlie short- and longer-term soil respiration responses to experimental warming in a dryland ecosystem.GLOBAL CHANGE BIOLOGY,26(9),5254-5266.
MLA	Dacal, Marina,et al."Contrasting mechanisms underlie short- and longer-term soil respiration responses to experimental warming in a dryland ecosystem".GLOBAL CHANGE BIOLOGY 26.9(2020):5254-5266.