Global mycorrhizal plant distribution linked to terrestrial carbon stocks

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 hind...

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Detalles Bibliográficos
Autores: Soudzilovskaia, Nadejda A.|||0000-0003-4659-2585, van Bodegom, Peter|||0000-0003-0771-4500, Terrer, César|||0000-0002-5479-3486, Zelfde, Maarten van't, McCallum, Ian, Luke McCormack, M.|||0000-0002-8300-5215, Fisher, Joshua B.|||0000-0003-4734-9085, Brundrett, Mark C.|||0000-0002-2501-9037, de Sá, Nuno César|||0000-0001-7035-5913, Tedersoo, Leho|||0000-0002-1635-1249
Tipo de recurso: artículo
Fecha de publicación:2019
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:223319
Acceso en línea:https://ddd.uab.cat/record/223319
https://dx.doi.org/urn:doi:10.1038/s41467-019-13019-2
Access Level:acceso abierto
Palabra clave:Biogeochemistry
Biogeography
Carbon cycle
Ecosystem ecology
Descripción
Sumario: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.

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