Organic matter consumption by plankton organisms in mesotrophic ecosystem: radioactivity (on membrane filters) of plankton and detritus labeled with carbon (14C)-Reference-Cited by-同舟云学术

Organic matter consumption by plankton organisms in mesotrophic ecosystem: radioactivity (on membrane filters) of plankton and detritus labeled with carbon (14C)

Published:2022-08-10 Issue:4 Volume:2022 Page:45-49
ISSN:0131-6184
Container-title:Fisheries
language:en
Short-container-title:

Author:

Ostroumov Sergei¹,Sadchikov Anatoliy²

Affiliation:

1. Moscow State University named after M.V. Lomonosov

2. Moscow State UMoscow State University named after M.V. Lomonosovniversity named after M.V. Lomonosov

Abstract

To understand the mechanisms of formation of water quality in an aquatic ecosystem, the processes of formation of funds of dissolved organic matter (DOM) and detritus are essential. When the algae die off, the bulk of their contents enter the aquatic environment within one week. Detritus settles at a rate of about one meter per day. In deep water bodies, the destruction of detritus occurs to a significant extent in the water column; in shallow water bodies, it occurs mainly at the bottom. DOM is consumed by bacteria and algae. This article presents the results of an experimental study of the quantitative aspects of DOM transformation and metabolism using natural water samples immediately after they were taken from a mesotrophic freshwater ecosystem. The total heterotrophic activity of various fractions of plankton in natural water was determined. The specific heterotrophic activity (per a unit of biomass) was also determined. It was found that the specific heterotrophic activity of bacteria (per a unit of biomass) in all cases is higher than the activity of phytoplankton. The new results provide a detailed understanding of chemical-biotic interactions in aquatic ecosystems, which is important for the analysis of water self-purification processes.

Publisher

FSBI TSUREN

Subject

General Medicine

Reference23 articles.

1. Садчиков А.П. Продуцирование и трансформация органического вещества размерными группами фито- и бактериопланктона: На примере водоемов Подмосковья: Автореферат дис. ... доктора биологических наук: 03.00.18 // МГУ им. М.В.Ломоносова. – Москва, 1997. – 53 с., Sadchikov A.P. Production and transformation of organic matter by size groups of phyto- and bacterioplankton: On the example of reservoirs of the Moscow region: Abstract of the dissertation. ... Doctors of Biological Sciences: 03.00.18 // Lomonosov Moscow State University. – Moscow, 1997. – 53 p.

2. Cole J.J., Likens G.E, Hobbie J.E. Decomposition of planktonic algae in an oligotrophic lake. //Oikos, 1984. Vol 42. N 3. – Pp. 257-266., Cole J.J., Likens G.E., Hobby J.E. Decomposition of planktonic algae in an oligotrophic lake. //Oikos, 1984. Volume 42. – N 3. – Pp. 257-266.

3. Садчиков А.П., Остроумов С.А. Методические аспекты изучения продукционно-деструкционных процессов в водных экосистемах / А.П. Садчиков, С.А. Остроумов // Ecological Studies, Hazards, Solutions. 2018. Vol. 25. – Pp.139-146., Sadchikov A.P., Ostroumov S.A. Methodological aspects of the study of productive and destructive processes in aquatic ecosystems / A.P. Sadchikov, S.A. Ostroumov // Environmental Studies, Hazards, Solutions. 2018. Volume 25. – Pp.139-146.

4. Садчиков А.П., Остроумов С.А. Потребление низкомолекулярного органического вещества водорослями и бактериями (на примере мезотрофной экосистемы) / А.П. Садчиков, С.А. Остроумов // Ecological Studies, Hazards, Solutions. 2018. Vol.25. – Pp.146-153., Sadchikov A.P., Ostroumov S.A. Consumption of low-molecular organic matter by algae and bacteria (on the example of a mesotrophic ecosystem) / A.P. Sadchikov, S.A. Ostroumov // Environmental Studies, Hazards, Solutions. 2018. Volume 25. – Pp.146-153.

5. Садчиков А.П., Остроумов С.А. Совершенствование методологии при изучении гетеротрофной активности водорослей и бактерий / А.П. Садчиков, С.А. Остроумов // Ecological Studies, Hazards, Solutions. 2018. Vol.25. – Pp.153-160., Sadchikov A.P., Ostroumov S.A. Improving methodology in the study of heterotrophic activity of algae and bacteria / A.P. Sadchikov, S.A. Ostroumov // Environmental Studies, Hazards, Solutions. 2018. Volume 25. – Pp.153-160.