Global mycorrhizal plant distribution linked to terrestrial carbon stocks
Soudzilovskaia, Nadejda A. (Leiden University. Institute of Environmental Sciences)
van Bodegom, Peter (Leiden University. Institute of Environmental Sciences)
Terrer, César (Universitat Autònoma de Barcelona. Institut de Ciència i Tecnologia Ambientals)
Zelfde, Maarten van't (Leiden University. Institute of Environmental Sciences)
McCallum, Ian (International Institute for Applied Systems Analysis (Àustria). Ecosystem Services and Management)
Luke McCormack, M. (Center for Tree Science. The Morton Arboretum)
Fisher, Joshua B. (University of California. Joint Institute for Regional Earth System Science and Engineering)
Brundrett, Mark C. (University of Western Australia. School of Biological Sciences)
de Sá, Nuno César (Leiden University. Institute of Environmental Sciences)
Tedersoo, Leho (University of Tartu. Natural History Museum and Institute of Ecology and Earth Sciences)

Fecha:	2019
Resumen:	Vegetation impacts on ecosystem functioning are mediated by mycorrhizas, plant-fungal associations formed by most plant species. Ecosystems dominated by distinct mycorrhizal types differ strongly in their biogeochemistry. Quantitative analyses of mycorrhizal impacts on ecosystem functioning are hindered by the scarcity of information on mycorrhizal distributions. Here we present global, high-resolution maps of vegetation biomass distribution by dominant mycorrhizal associations. Arbuscular, ectomycorrhizal, and ericoid mycorrhizal vegetation store, respectively, 241 ± 15, 100 ± 17, and 7 ± 1. 8 GT carbon in aboveground biomass, whereas non-mycorrhizal vegetation stores 29 ± 5. 5 GT carbon. Soil carbon stocks in both topsoil and subsoil are positively related to the community-level biomass fraction of ectomycorrhizal plants, though the strength of this relationship varies across biomes. We show that human-induced transformations of Earth's ecosystems have reduced ectomycorrhizal vegetation, with potential ramifications to terrestrial carbon stocks. Our work provides a benchmark for spatially explicit and globally quantitative assessments of mycorrhizal impacts on ecosystem functioning and biogeochemical cycling.
Ayudas:	European Commission 689443 European Commission 727698
Nota:	Unidad de excelencia María de Maeztu MdM-2015-0552
Derechos:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió publicada
Materia:	Biogeochemistry ; Biogeography ; Carbon cycle ; Ecosystem ecology
Publicado en:	Nature communications, Vol. 10 (November 2019) , art. 5077, ISSN 2041-1723

DOI: 10.1038/s41467-019-13019-2
PMID: 31700000

10 p, 5.0 MB

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