Open AccessPRODUCTION AND DESTRUCTION PROCESSES IN THE PLANKTON COMMUNITIES OF THE RIVER DON DOWNSTREAM IN 2020 IN CONDITIONS OF ABNORMAL LOW WATER
Author(s) -
V.V. Sayapin
Publication year - 2021
Publication title -
èkologiâ. èkonomika. informatika. tom 1: sistemnyj analiz i modelirovanie èkonomičeskih i èkologičeskih sistem
Language(s) - English
Resource type - Journals
ISSN - 2500-395X
DOI - 10.23885/2500-395x-2021-1-6-161-166
Subject(s) - downstream (manufacturing) , plankton , environmental science , production (economics) , hydrology (agriculture) , water resource management , ecology , geology , biology , engineering , operations management , economics , geotechnical engineering , macroeconomics
The results of an investigation of production and destruction processes in the plankton community of the lower Don in August, September and October 2020 are presented. The quantitative indicators of primary production and destruction at various stations in this area are presented. A high intensity of production and destruction processes at the lower Don stations was shown in comparison with the station located above the Severskiy Donets river. The absence of a strict relationship between the exposure horizon and the intensity of production and destruction processes was noted. The dominance of production processes over destruction processes was revealed in most experiments, during the research period. It was shown that abnormal low water content did not lead to suppression of production and destruction processes in the plankton communities of the studied water bodies. A comparison of the data obtained at the same points in May 2018, during the flood period and in September 2019, and summer-autumn period 2020 was carried out, and it was noted that in the high-water season, the intensity of production and destruction processes was higher. At the same time, the level of primary production was higher in 2020. Thus, it is shown that in this area, during the study period, increased water content had a favorable effect on production activity, but it was not a determining factor