Journal ArticleDOI
Organic nutrient uptake by mycorrhizal fungi enhances ecosystem carbon storage: a model-based assessment
TLDR
It is shown that organic nutrient uptake can significantly increase soil C storage, and that it has a greater effect under nutrient-limited conditions.Abstract:
Understanding the factors that drive soil carbon (C) accumulation is of fundamental importance given their potential to mitigate climate change. Much research has focused on the relationship between plant traits and C sequestration, but no studies to date have quantitatively considered traits of their mycorrhizal symbionts. Here, we use a modelling approach to assess the contribution of an important mycorrhizal fungal trait, organic nutrient uptake, to soil C accumulation. We show that organic nutrient uptake can significantly increase soil C storage, and that it has a greater effect under nutrient-limited conditions. The main mechanism behind this was an increase in plant C fixation and subsequent increased C inputs to soil through mycorrhizal fungi. Reduced decomposition due to increased nutrient limitation of saprotrophs also played a role. Our results indicate that direct uptake of nutrients from organic pools by mycorrhizal fungi could have a significant effect on ecosystem C cycling and storage.read more
Citations
More filters
Journal ArticleDOI
The world‐wide ‘fast–slow’ plant economics spectrum: a traits manifesto
Peter B. Reich,Peter B. Reich +1 more
TL;DR: A single ‘fast–slow’ plant economics spectrum that integrates across leaves, stems and roots is a key feature of the plant universe and helps to explain individual ecological strategies, community assembly processes and the functioning of ecosystems.
Journal ArticleDOI
Redefining fine roots improves understanding of below-ground contributions to terrestrial biosphere processes
M. Luke McCormack,Ian A. Dickie,David M. Eissenstat,Timothy J. Fahey,Christopher W. Fernandez,Dali Guo,Heljä-Sisko Helmisaari,Erik A. Hobbie,Colleen M. Iversen,Robert B. Jackson,Jaana Leppälammi-Kujansuu,Richard J. Norby,Richard P. Phillips,Kurt S. Pregitzer,Seth G. Pritchard,Boris Rewald,Marcin Zadworny +16 more
TL;DR: It is demonstrated how order-based and functional classification frameworks improve the understanding of dynamic root processes in ecosystems dominated by perennial plants.
Journal ArticleDOI
Mycorrhiza-mediated competition between plants and decomposers drives soil carbon storage
TL;DR: This finding links the functional traits of mycorrhizal fungi to carbon storage at ecosystem-to-global scales, suggesting that plant–decomposer competition for nutrients exerts a fundamental control over the terrestrial carbon cycle.
Journal ArticleDOI
Ectomycorrhizal fungi – potential organic matter decomposers, yet not saprotrophs
Björn D. Lindahl,Anders Tunlid +1 more
TL;DR: It is proposed that ectomycorrhizal fungi benefit from organic matter decomposition primarily through increased nitrogen mobilization rather than through release of metabolic C and questioned is the view that they may act as facultative saprotrophs.
Journal ArticleDOI
The Ecology of Soil Carbon: Pools, Vulnerabilities, and Biotic and Abiotic Controls
TL;DR: This analysis suggests root inputs are approximately five times more likely than an equivalent mass of aboveground litter to be stabilized as SOM, and that fungi and bacteria, and soil faunal food webs, and mineral associations drive stabilization at depths greater than ∼30 cm.
References
More filters
Book
Ecological Stoichiometry: The Biology of Elements from Molecules to the Biosphere
Robert W. Sterner,James J. Elser +1 more
TL;DR: Thank you very much for reading ecological stoichiometry the biology of elements from molecules to the biosphere, and maybe you have knowledge that, people have look hundreds of times for their chosen readings, but end up in infectious downloads.
Journal ArticleDOI
Analysis of factors controlling soil organic matter levels in Great Plains grasslands
TL;DR: In this article, a model of soil organic matter (SOM) quantity and composition was used to simulate steady-state organic matter levels for 24 grassland locations in the U.S. Great Plains.
Journal ArticleDOI
Total carbon and nitrogen in the soils of the world
TL;DR: In this article, a discrepancy of approximately 350 × 1015 g (or Pg) of C in two recent estimates of soil carbon reserves worldwide is evaluated using the geo-referenced database developed for the World Inventory of Soil Emission Potentials (WISE) project.
Journal ArticleDOI
Mycorrhizas and nutrient cycling in ecosystems – a journey towards relevance?
David Read,Jesús Pérez-Moreno +1 more
TL;DR: The results support the hypothesis that selection has favoured ericoid and ectomycorrhizal systems with well developed saprotrophic capabilities in those ecosystems characterized by retention of N and P as organic complexes in the soil.
Journal ArticleDOI
A global budget for fine root biomass, surface area, and nutrient contents
TL;DR: This analysis provides global distributions for fine root biomass, length, and surface area with depth in the soil, and global estimates of nutrient pools in fine roots.
Related Papers (5)
Mycorrhiza-mediated competition between plants and decomposers drives soil carbon storage
Mycorrhizas and nutrient cycling in ecosystems – a journey towards relevance?
David Read,Jesús Pérez-Moreno +1 more