Abundance of introduced species at home predicts abundance away in herbaceous communities - Firn, Jennifer; Moore, Joslin; MacDougall, Andrew; Borer, Elizabeth; Seabloom, Eric; HilleRisLambers, Janneke; Harpole, W. Stanley; Cleland, Elsa E.; Brown, Cynthia; Knops, Johannes; Prober, Suzanne; Pyke, David; et al. (Ecology Letters, 2011)