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Updated: May 12, 2026
08:30
Characterization of Aquatic Biofilms with Flow Cytometry
Published on: June 6, 2018
Pollutant biodegradation profile mediated by multi-trophic microbial dynamics in rivers
Joeselle M Serrana1,2, Run Tian2,3, Francisco J A Nascimento1,4,5
1Stockholm University Center for Circular and Sustainable Systems (SUCCeSS), Stockholm University, Stockholm 106 91, Sweden.
ISME Communications
|May 11, 2026
Summary
Microbial communities in rivers drive pollutant biodegradation, with their structure influenced by seasons and location. Multi-trophic interactions significantly mediate how environmental factors affect this crucial ecosystem function.
Area of Science:
- Environmental microbiology
- Ecosystem ecology
- Bioremediation
Background:
- Microbial communities and environmental conditions are vital for aquatic ecosystem functions, particularly pollutant biodegradation.
- The influence of multi-trophic interactions and their spatiotemporal dynamics on these processes is not well understood.
Purpose of the Study:
- To investigate how seasonal and spatial variations, influenced by trophic interactions in benthic microbial communities, affect community composition, functional capacity, and pollutant degradation potential in rivers.
- To explore the links between community composition and the biodegradation of organic pollutants across seasons in wastewater-receiving rivers.
Main Methods:
- Characterized prokaryotic (archaea, bacteria) and eukaryotic taxa (algae, fungi, protists, metazoans).
- Inferred metabolic pathways to assess functional capacity.
- Employed mediation analysis to quantify the influence of community structure on pollutant biodegradation.
Main Results:
- Multi-trophic community structure significantly mediates the impact of environmental factors on the biodegradation of 96 organic pollutants.
- Prokaryotic communities explained 60% of the total environmental influence on biodegradation.
- Eukaryotic groups (fungi, protists, algae, metazoans) also showed significant indirect mediation effects (56%, 53%, 26%, 38%, respectively).
- Spatial variation accounted for more community composition variance than seasonality.
Conclusions:
- Ecosystem-level insights into the association between multi-trophic microbial community organization and pollutant biodegradation potential in dynamic river environments.
- Findings support the development of predictive frameworks for sustainable water management and bioremediation strategies.
Keywords:
biodegradationenvironmental microbiomemediation analysismicrobial eukaryotesorganic pollutantsprokaryotesspatiotemporal dynamicsMore Related Videos
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