A1 Journal article (refereed)
Bacterial Diversity in a Dynamic and Extreme Sub-Arctic Watercourse (Pasvik River, Norwegian Arctic) (2020)

Papale, M., Rappazzo, A. C., Mikkonen, A., Rizzo, C., Moscheo, F., Conte, A., Michaud, L., & Lo Giudice, A. (2020). Bacterial Diversity in a Dynamic and Extreme Sub-Arctic Watercourse (Pasvik River, Norwegian Arctic). Water, 12(11), Article 3098. https://doi.org/10.3390/w12113098

JYU authors or editors

Publication details

All authors or editors: Papale, Maria; Rappazzo, Alessandro Ciro; Mikkonen, Anu; Rizzo, Carmen; Moscheo, Federica; Conte, Antonella; Michaud, Luigi; Lo Giudice, Angelina

Journal or series: Water

eISSN: 2073-4441

Publication year: 2020

Volume: 12

Issue number: 11

Article number: 3098

Publisher: MDPI AG

Publication country: Switzerland

Publication language: English

DOI: https://doi.org/10.3390/w12113098

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/73010

Publication is parallel published: http://hdl.handle.net/10138/321443


Microbial communities promptly respond to the environmental perturbations, especially in the Arctic and sub-Arctic systems that are highly impacted by climate change, and fluctuations in the diversity level of microbial assemblages could give insights on their expected response. 16S rRNA gene amplicon sequencing was applied to describe the bacterial community composition in water and sediment through the sub-Arctic Pasvik River. Our results showed that river water and sediment harbored distinct communities in terms of diversity and composition at genus level. The distribution of the bacterial communities was mainly affected by both salinity and temperature in sediment samples, and by oxygen in water samples. Glacial meltwaters and runoff waters from melting ice probably influenced the composition of the bacterial community at upper and middle river sites. Interestingly, marine-derived bacteria consistently accounted for a small proportion of the total sequences and were also more prominent in the inner part of the river. Results evidenced that particular conditions occurring at sampling sites (such as algal blooms, heavy metal contamination and anaerobiosis) may select species at local scale from a shared bacterial pool, thus favoring certain bacterial taxa. Conversely, the few phylotypes specifically detected in some sites are probably due to localized external inputs introducing allochthonous microbial groups.

Keywords: microbial ecology; aquatic ecosystems; microbiome; bacteria; flowing waters; rivers; sediments; arctic region

Free keywords: bacterial diversity; NGS; river sediment and water; sub-Arctic system

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2020

JUFO rating: 1

Last updated on 2021-07-07 at 21:31