Spatial variability of biogenic elements and organic carbon content in the tributaries of Lake BaikalEkaterina Sharapova, Ludmila Efimova, Irina Denisova, Aida Ermekova, Mikhail Lychagin and Sergey ChalovE3S Web Conf., 163 (2020) 05012DOI: https://doi.org/10.1051/e3sconf/202016305012