MOESM1 of Fire-severity effects on plant–fungal interactions after a novel tundra wildfire disturbance: implications for arctic shrub and tree migration Rebecca Hewitt Teresa Hollingsworth F. Stuart Chapin III D. Lee Taylor 10.6084/m9.figshare.c.3640112_D1.v1 https://springernature.figshare.com/articles/dataset/MOESM1_of_Fire-severity_effects_on_plant_fungal_interactions_after_a_novel_tundra_wildfire_disturbance_implications_for_arctic_shrub_and_tree_migration/4454198 Additional file 1. Site descriptions for eight sampling sites grouped by fire-severity categories within the Anaktuvuk River Fire burn scar. We classified vegetation communities using the Viereck (1992) vegetation classification: 2C2A = open low scrub mixed shrub-sedge tussock tundra, 2C2H = open low scrub willow-sedge shrub tundra, 3A21 = mesic graminoid herbaceous sedge-birch tundra, 3A2D = mesic graminoid herbaceous tussock tundra, and 3A3 = wet graminoid herbaceous tundra. Fire-severity categories were assigned based on composite burn index and field descriptions. 2016-05-11 05:00:00 Alnus viridis Arctic tundra ARISA Climate change Fire severity Fungal internal transcribed spacer (ITS) Picea mariana Shrub expansion Treeline