Observations of heterotrophic activity on photoassimilated organic matter

1977 ◽  
Vol 40 (2) ◽  
pp. 101-108 ◽  
Author(s):  
R. Iturriaga ◽  
H. -G. Hoppe
Keyword(s):  
Organic Matter ◽  
Heterotrophic Activity

IMPROVEMENT OF THE METHOD FOR ASSESSMENT OF THE HETEROTROPHIC ACTIVITY OF FRESHWATER BACTERIA BY STUDYING HOW BACTERIAL COMMUNITY CONSUMES THE ORGANIC MATTER EXCRETED BY ALGAE: ISSUES OF WATER QUALITY

Fisheries ◽  
2020 ◽  
Vol 2020 (2) ◽  
pp. 61-66 ◽  
Author(s):  
Anatoly Sadchikov
Keyword(s):  
Water Quality ◽  
Organic Matter ◽  
Aquatic Ecosystems ◽  
Aquatic Organisms ◽  
Freshwater Ecosystems ◽  
Trophic Levels ◽  
Organic Substances ◽  
Heterotrophic Activity ◽  
Freshwater Bacteria ◽  
Methods And Techniques

The article describes an improved and approved methodology for assessing the heterotrophic activity of freshwater bacteria using a specific example. Namely, the example of studying the bacterial consumption of organic matter excreted by algae. Utilization of organic substances in water bodies by microorganisms and their oxidation are an important part of the functioning of aquatic ecosystems and water self-purification. This article details innovative modifications to the method based on the use of 14C-labeled organic matter by aquatic organisms. All these methods and techniques have been tested in the study of production and destruction processes in freshwater ecosystems of different trophic levels including mesotrophic, eutrophic and hypertrophic surface ecosystems.

Microplastics: New substrates for heterotrophic activity contribute to altering organic matter cycles in aquatic ecosystems

2018 ◽  
Vol 635 ◽  
pp. 1152-1159 ◽  
Author(s):  
Maria Arias-Andres ◽  
Marie Therese Kettner ◽  
Takeshi Miki ◽  
Hans-Peter Grossart
Keyword(s):  
Organic Matter ◽  
Aquatic Ecosystems ◽  
Heterotrophic Activity
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