Phytoplankton characteristics of Tvertsa river and its tributaries

The results of the investigation of the algal flora of the plankton in Tvertsa River River and its tributaries - Logovezh, Malitsa and Kava rivers - are presented. The hydrochemical characteristics of the investigated rivers are given. 423 algal taxa are identified. The taxonomic structure of the flora and its ecological and geographical characteristics are given. A cluster analysis was performed on the parameters of the hydrochemical composition of water and the taxonomic diversity of the algoflora. We established that the dendrological differences of the taxonomic composition and hydrochemical indicators are identical to each other.