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Dominant forest tree mycorrhizal type mediates understory plant invasions [Ecology Letters]

Keywords : Eastern USA, forest mycorrhizal type, nutrient cycling, plant-soil feedback, temperate forests, understory invasions

par Frédéric Magné - publié le

Forest mycorrhizal type mediates nutrient dynamics, which in turn can influence forest community structure and processes. Using forest inventory data, we explored how dominant forest tree mycorrhizal type affects understory plant invasions with consideration of forest structure and soil properties. We found that arbuscular mycorrhizal (AM) dominant forests, which are characterised by thin forest floors and low soil C : N ratio, were invaded to a greater extent by non-native invasive species than ectomycorrhizal (ECM) dominant forests. Understory native species cover and richness had no strong associations with AM tree dominance.(...)

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