Journal Article10.1111/J.1461-0248.2004.00579.X
Carbon input to soil may decrease soil carbon content
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TL;DR: In this article, a negative relationship between primary production and soil carbon (C) content is found, and the authors conclude that energy available to soil microbes and microbial competition are important determinants of soil C decomposition.
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Abstract: It is commonly predicted that the intensity of primary production and soil carbon (C) content are positively linked. Paradoxically, many long-term field observations show that although plant litter is incorporated to soil in large quantities, soil C content does not necessarily increase. These results suggest that a negative relationship between C input and soil C conservation exists. Here, we demonstrate in controlled conditions that the supply of fresh C may accelerate the decomposition of soil C and induce a negative C balance. We show that soil C losses increase when soil microbes are nutrient limited. Results highlight the need for a better understanding of microbial mechanisms involved in the complex relationship between C input and soil C sequestration. We conclude that energy available to soil microbes and microbial competition are important determinants of soil C decomposition.
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Citations
Earthworm burrows: Kinetics and spatial distribution of enzymes of C-, N- and P- cycles
TL;DR: It is concluded that earthworm burrows are microbial hotspots with much higher and denser distribution of enzyme activities than reference soil.
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Universality of priming effect: An analysis using thirty five soils with contrasted properties sampled from five continents
Nazia Perveen,Nazia Perveen,Sébastien Barot,Vincent Maire,M. Francesca Cotrufo,Tanvir Shahzad,Evgenia Blagodatskaya,Catherine E. Stewart,Weixin Ding,Muhammad Rashid Siddiq,Bassem Dimassi,Bruno Mary,Sébastien Fontaine +12 more
TL;DR: In this article, the priming effect (PE) across varying land use and soil types has not been established so far, particularly on a large geographical scale, and the impacts of soil properties and soil organic matter distribution among physical fractions on the magnitude of PE are still unclear.
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Priming and microbial nutrient limitation in lowland tropical forest soils of contrasting fertility
Andrew T. Nottingham,Andrew T. Nottingham,Benjamin L. Turner,Paul M. Chamberlain,Andrew W. Stott,Edmund V. J. Tanner +5 more
TL;DR: This first study of priming mechanisms in Tropical forest soils indicates that input of labile carbon can result in priming by microbial mineralization of organic nutrients, which has important implications for understanding the fate of organic carbon in tropical forest soils.
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Bacterial rather than fungal community composition is associated with microbial activities and nutrient-use efficiencies in a paddy soil with short-term organic amendments
Junjie Guo,Wenbo Liu,Chen Zhu,Gongwen Luo,Yali Kong,Ning Ling,Min Wang,Jingyu Dai,Qirong Shen,Shiwei Guo +9 more
TL;DR: Soil microbial activities and nutrient-use efficiencies were dramatically changed along with the alteration of bacterial community composition, and soil organic carbon emerged as the major determinant of theacterial community composition.
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Colimitation of decomposition by substrate and decomposers - a comparison of model formulations
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TL;DR: In this paper, the authors compared different formulations of soil organic matter decomposition and found that different representations of decomposition by substrate and decomposers resulted in qualitatively different long-term behavior.
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