Drivers of the diversity of diatoms in an oligotrophic Andean stream Jhon Charles Donato-R, Hooz A. Mendivelso, Edna L. Pedraza-Garzón and Sergi Sabater Int. J. Lim., 58 (2022) 2 Published online: 20 April 2022 DOI: 10.1051/limn/2022003