FIGURE 1.

The boundary of a Nothofagus cliffortioides remnant forest in the Motatapu Valley, southern New Zealand. These boundaries tend to be stable over decadal time scales. Extensive areas of Nothofagus forest have been converted into grassland across New Zealand and a lack of ectomycorrhizal symbionts in grassland soils may be limiting natural forest recovery. This study investigates whether trophic facilitation using dual‐mycorrhizal shrubs, such as Leptospermum, could help establish an effective ectomycorrhizal community and promote remnant forest expansion.