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
Microbial biodiversity and ecosystem functioning under controlled conditions and in the wild
Thomas Bell,Mark O. Gessner,Mark O. Gessner,Robert I. Griffiths,Jennie R. McLaren,Peter J. Morin,Marcel G. A. van der Heijden,Wim H. van der Putten +7 more
- 30 Jul 2009
TL;DR: A glimpse of the considerable advances in microbial ecology is given, how microbial biodiversity affects the functioning of ecosystems in what is a rapidly expanding field of study is outlined, and the results reported primarily in microbiological journals with those of ecologists who use microbes as model systems are contrasted.
44
Grass invasion effects on forest soil carbon depend on landscape-level land use patterns
TL;DR: The findings suggest that, although this invader may accelerate carbon cycling in forest soils, its effects on soil carbon storage largely depend on nitrogen availability and invader biomass, which can be altered by landscape-level patterns of land use.
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Disentangling the effects of nitrogen availability and soil acidification on microbial taxa and soil carbon dynamics in natural grasslands
TL;DR: In this paper, the effects of increased nitrogen availability and soil acidification on relative abundance of bacterial and fungal taxa under mild (soil incubation for 28 days) and strong microbial C limitation conditions in natural ecosystems are disentangled.
43
Long-term Effect of a Single Application of Organic Refuse on Carbon Sequestration and Soil Physical Properties
Juan Albaladejo,Juan Antonio López,Carolina Boix-Fayos,Gonzalo G. Barberá,María Martínez-Mena +4 more
TL;DR: Evaluated long-term effects of a single addition of organic refuse to the degraded soils to increase the potential for C sequestration was effective and higher saturated hydraulic conductivity, aggregate stability, and available water content values and lower bulk density values were measured in the restored plots.
43
Responses of two nonlinear microbial models to warming and increased carbon input
Ying-Ping Wang,Jiang Jiang,Benito M. Chen-Charpentier,Folashade B. Agusto,Alan Hastings,Forrest M. Hoffman,Martin Rasmussen,Matthew J. Smith,Katherine Todd-Brown,Katherine Todd-Brown,Ying Wang,Xia Xu,Yiqi Luo +12 more
TL;DR: In this paper, the authors compare two nonlinear microbial models of soil carbon decomposition: one based on reverse Michaelis-Menten kinetics (model A) and the other based on regular Michaelis -menten kinematics (model B) using analytic approximations and numerical solutions.
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