Features of measuring dynamic biochemical parameters in the middle Ob

[摘要] Indicators that reflect metabolic processes of living organisms in the water of the middle course of the Ob River were measured in different seasons of 2016 and 2017. In the winter period, the processes of catabolism predominate. They intensify in mid-February. At this time a sharp decrease in dissolved oxygen (O2) in the water is observed, which results in fish kills. The most intense catabolic processes occur in March, before the river ice breakup. In summertime there is no difference between the day and night periods. It is probable that the internal heterogeneity of water flows has a more significant effect on dynamic indices than the processes of photosynthesis.

[发布机构] Laboratory of Biodiversity and Ecology, Tomsk State University, Tomsk, Russia^1;Géosciences Environnement Toulouse, UMR5563, IRD UR 234, Université Paul Sabatier, 14 Avenue Edouard Belin, Toulouse, France^2

[效力级别] 生物科学 [学科分类] 生物科学（综合）

[关键词] Biochemical parameters;Catabolic process;Fish kills;Living organisms;Metabolic process;Ob rivers;ON dynamics;Water flows