Species richness of scaled Chrysophytes in arctic waters in the Tiksi Region (Yakutia, Russia) ...

• Main Authors: Bessudova, Anna, Gabyshev, Viktor, Bukin, Yurij, Gabysheva, Olga, Likhoshway, Elena
• Format: Article in Journal/Newspaper
• Language: English
• Published: Zenodo 2022
• Subjects: Chrysophyceae; Arctic; scaled chrysophytes; Tiksi; Climate change; Yakutia
• Online Access: https://dx.doi.org/10.5281/zenodo.7710355; https://zenodo.org/record/7710355

Searching for regularities in the species composition and diversity of scaled chrysophytes is crucial for monitoring Arctic waters within the concept of global climate change since these organisms are good indicators of environmental changes. Transmission electron microscopy allowed us to investigate the species diversity of scaled chrysophytes in 14 Arctic water bodies near the town of Tiksi (Yakutia) relative to hydrochemical gradients. We described a high species richness of scaled chrysophytes, 65 species from 6 genera: Chrysosphaerella (2), Paraphysomonas (8), Lepidochromonas (3), Spiniferomonas (10), Mallomonas (23), Synura (19). The water bodies we studied had a significantly different species composition. The composition of the species in the study area was confirmed to be affected by concentrations of water dissolved oxygen (O2), ion nitrate (NO3-) and copper ion (Cu2+) as well as by indicators of biological and chemical oxygen demand (BOD and COD). The species richness (α richness) is proved to be ... : This study was performed using the facilities of the Instrumentation Center for Electron Microscopy at the Integrated Center of Ultramicroanalysis (Limnological Institute, Siberian Branch, Russian Academy of Sciences. The study was supported by the projects No. 0279-2021-0008 (Limnological Institute) and No. 0297-2021-0023 (Institute for Biological Problems of Cryolithozone). ...