<abstract xmlns="http://www.w3.org/1999/xhtml">Microbial communities are known to be sensitive indicators for water pollution and biomonitoring assessment. In this study, we aimed at observation of microbial abundance and community composition in the mountain river Morávka. The results showed temporal and spatial changes in total cell abundance (TCA). TCA reached 105–106 cells/ml, increasing values were detected towards the mouth with maxima in summer and autumn months. Out of <italic>Eubacteria</italic> Betaproteobacteria and Cytophaga-Flavobacterium were found to predominate, while <italic>Archaea</italic> represented only 4.8 % of TCA. Along the flow three distinct patterns of phylogenetic groups' share were revealed related to increasing pollution. Microbial community composition was found to be most significantly dependent on the elevation and the sampling date. Moreover, environmental variables like O2 saturation, water temperature, trophic potential and pH influenced microbial community as well. Statistical analyses showed significant seasonal (23.5 %) and spatial (4.7 %) changes in microbial community composition.</abstract>

Microbial communities are known to be sensitive indicators for water pollution and biomonitoring assessment. In this study, we aimed at observation of microbial abundance and community composition in the mountain river Morávka. The results showed temporal and spatial changes in total cell abundance (TCA). TCA reached 105–106 cells/ml, increasing values were detected towards the mouth with maxima in summer and autumn months. Out of Eubacteria Betaproteobacteria and Cytophaga-Flavobacterium were found to predominate, while Archaea represented only 4.8 % of TCA. Along the flow three distinct patterns of phylogenetic groups' share were revealed related to increasing pollution. Microbial community composition was found to be most significantly dependent on the elevation and the sampling date. Moreover, environmental variables like O2 saturation, water temperature, trophic potential and pH influenced microbial community as well. Statistical analyses showed significant seasonal (23.5 %) and spatial (4.7 %) changes in microbial community composition.

The influence of environmental factors on microbial community composition in a mountain river

Acta Musei Silesiae, Scientiae Naturales

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Microbial communities are known to be sensitive indicators for water pollution and biomonitoring assessment. In this study, we aimed at observation of...

The influence of environmental factors on microbial community composition in a mountain river

Published Online: Oct 11, 2020

Page range: 75 - 88

DOI: https://doi.org/10.2478/cszma-2020-0006

Keywords
FISH, microbial abundance, microbial community composition, mountain river, spatial changes, temporal changes

© 2020 Kateřina Sovová et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

The influence of environmental factors on microbial community composition in a mountain river

Published Online: Oct 11, 2020

Page range: 75 - 88

DOI: https://doi.org/10.2478/cszma-2020-0006

KeywordsFISH, microbial abundance, microbial community composition, mountain river, spatial changes, temporal changes

© 2020 Kateřina Sovová et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
FISH, microbial abundance, microbial community composition, mountain river, spatial changes, temporal changes