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Scoop.it!
La pollinisation des plantes par les insectes est un service écologique gratuit et indispensable qui contribue au maintien de la biodiversité. Elle joue un rôle économique important pour la société en étant un acteur actif dans la production de nourriture. Cependant, la pollution de l'air en milieu rural ou urbain semble réduire ce processus naturel. Pourquoi ? Via Hubert MESSMER 
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Scoop.it!
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. (...) Here we present global, high-resolution maps of vegetation biomass distribution by dominant mycorrhizal associations.(...) 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.
DocBiodiv's insight:
"A study in @NatureComms shows that human impacts have greatly reduced plant-fungus symbioses, which play a key role in sequestering carbon in soils. Restoring these ecosystems could be one strategy to slow climate change."
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Scoop.it!
Invisibles, longtemps négligés, ces réseaux souterrains indispensables à la vie des plantes passent désormais sous la loupe des chercheurs. L’objectif : permettre une agriculture respectueuse de l’environnement, en misant sur des systèmes racinaires capables de mieux exploiter les ressources naturelles du sol.
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A propos de l'article des chercheurs de l'Université de Reading, UK Centre for Ecology & Hydrology et de l'Université de Birmingham parue ds Environmental Pollution