The effects of climate change on the development of phytoplankton in the Uchinsk Reservoir of the Moscow Canal

Abstract

In the climate of European Russia, there are significant changes: before the year 2010, the tendency of warm period temperature to drop with a simultaneous increase in precipitation was dominated but nowadays it is dominated a reverse trend to increase average and maximum temperatures, decrease in precipitation, and increase in the number of sunny days. This creates the most favourable conditions for the development of phytoplankton and zooplankton consuming it. Our research exemplified by the Uchinsky Reservoir has established that since 2010 the number of phytoplankton has been increasing multiply with the development of blue-green algae at the end of the warm period, and it adversely affects the quality of water, leading to the development of eutrophication processes. The factors limiting the number of phytoplankton are the development of zooplankton and almost total consumption of ammonium nitrogen by phytoplankton. To manage the development of phytoplankton due to the most favourable climate conditions, a set of measures is required to reduce the intake of biogenic elements into the water of the Reservoir.

Phytoplankton and Microzooplankton Community Structure and Assembly Mechanisms in Northwestern Pacific Ocean Estuaries with Environmental Heterogeneity and Geographic Segregation

“…Promotion of microzooplankton can lead to a sustained decrease in phytoplankton, despite high nutrient levels ( 34 – 36 ). Besides, environments with high microzooplankton abundances always had a higher level of ammonia nitrogen due to the limited phytoplankton ( 37 , 38 ), which can consume almost all the ammonia nitrogen when phytoplankton form blooms ( 39 ). This phenomenon was consistent with the higher ammonia concentration and microzooplankton richness in the YLJ estuary compared to the LH samples (Fig.…”