Intensive moose browsing appears to have led to a large reduction in woody plant abundance and diversity in Gros Morne National Park mature forests.This measure assess the biodiversity of native shrubs and tree saplings in the understory of mature balsam fir forest stands. Stems are being enumerated by species in 1x20 m strip transects, 6 of which are sampled at each of 15 sites in forests throughout the 3 ecoregions in GMNP (90 strip transects total). Sampling is carried out every second year, during the months of July to September.