Divergence of Arctic shrub growth associated with sea ice decline per Buchwal, A, Sullivan, PF, Macias-Fauria, M, Post, E, Myers-Smith, IH, Stroeve, JC, Blok, D, Tape, KD, Forbes, BC, Ropars, P, Lévesque, E, Elberling, B, Angers-Blondin, S, Boyle, JS, Boudreau, S, Boulanger-Lapointe, N, Gamm, C, Hallinger, M, Rachlewicz, G, Young, A, Zetterberg, P, Welker, JM