Structural and functional characteristics of algal flora in water bodies of the natural monuments in Orenburg forest steppe Trans Volga region (Russia)Marina E. Ignatenko, Tatyana N. Yatsenko-Stepanova and Olga G. KalmykovaBIO Web Conf., 24 (2020) 00027DOI: https://doi.org/10.1051/bioconf/20202400027