General destabilizing effects of eutrophication on grassland productivity at multiple spatial scales by Hautier, Y, Zhang, P, Loreau, M, Wilcox, KR, Seabloom, EW, Borer, ET, Byrnes, JEK, Koerner, SE, Komatsu, KJ, Lefcheck, JS, Hector, A, Adler, PB, Alberti, J, Arnillas, CA, Bakker, JD, Brudvig, LA, Bugalho, MN, Cadotte, M, Caldeira, MC, Carroll, O, Crawley, M, Collins, SL, Daleo, P, Dee, LE, Eisenhauer, N, Eskelinen, A, Fay, PA, Gilbert, B, Hansar, A, Isbell, F, Knops, JMH, MacDougall, AS, McCulley, RL, Moore, JL, Morgan, JW, Mori, AS, Peri, PL, Pos, ET, Power, SA, Price, JN, Reich, PB, Risch, AC, Roscher, C, Sankaran, M, Schütz, M, Smith, M, Stevens, C, Tognetti, PM, Virtanen, R, Wardle, GM