Revegetation of Mining-Disturbed Lands in Ontario Using Arbuscular Mycorrhizal Fungi

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Rapai, Sean
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University of Guelph

This study identified a target post-mine plant community for the Detour Lake mine site through the establishment, sampling and analysis of data from vegetation plots on the mine property. This study also examined techniques in the application of arbuscular mycorrhizal fungi (AMF) soil amendments to improve re-vegetation success in mine overburden under greenhouse conditions. Selected boreal understory plant species had significantly greater above ground biomass and percent root colonization rates following soil amendment with AMF, and AMF in combination with peat soil amendments. In a second trial, Elymus trachycaulus had significantly increased hyphal and vesicular, but not arbuscular, root colonization in response to inoculation with a commercial strain of AMF (Rhizophagus irregularis). Although above ground biomass was not increased. The re-introduction of AMF during the reclamation of boreal forest ecosystems should be explored under field conditions, as the community examined in this greenhouse study responded positively.

Arbuscular Mycorrhizal Fungi, Commercial Inoculation, Boreal, Mine Restoration