F. Isbell, Calcagno, V., Hector, A., Connolly, J., W Harpole, S., Reich, P. B., Scherer-Lorenzen, M., Schmid, B., Tilman, D., and van Ruijven, J.,
“High plant diversity is needed to maintain ecosystem services”,
Nature, vol. 477, no. 7363, pp. 199-202, 2011.