Naslov
Seasonal changes of microbial community in Plitvice Lakes

Autori
Čačković, Andrea ; Kajan, Katarina ; Mitrović, Maja ; Selak, Lorena ; Brozinčević, Andrijana ; Orlić, Sandi

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
6. simpozij studenata doktorskih studija PMF-a : knjiga sažetaka = 6th Faculty of Science PhD student symposium : book of abstracts / Schneider, Petra - Zagreb, 2022, 256-257

ISBN
978-953-6076-93-2

Skup
6. Simpozij studenata doktorskih studija PMF-a = 6th Faculty of Science PhD Student Symposium

Mjesto i datum
Zagreb, Hrvatska, 23.04.2022. - 24.04.2022

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
16S rDNA ; seasonality ; aquatic ecosystem

Sažetak
Plitvice Lakes are the largest, best known and most visited national park in Croatia. The most prominent attraction of the park, the cascading lakes, are formed by the constant biodynamic process of formation and growth of tufa barriers. The National Park's biodiverse aquatic ecosystem also includes a large number of streams that supply water to the lakes. The microbial community plays an important role in the process of tufa formation [1]. Due to the high anthropogenic pressure in the National Park, but also due to climate change, the microbial community of aquatic habitats is prone to change. Changes in the microbial community along the watercourse can jeopardize the tufa formation process and the appearance of the lakes themselves. The aim of this study was to establish the structure and diversity changes of the microbial community in the aquatic ecosystems of the Plitvice Lakes National Park. For this reason, we conducted research within the Plitvice Lakes catchment area at two different times of the year. Water samples were collected in May and September 2019 from 24 sites on streams connecting the lakes and from all surface waters in the Plitvice Lakes catchment area. The Korana River was also sampled, as it represents the main outflow of the entire lake basin. A multisensor probe (EXO2, YSI, USA) was used for in situ measurement of environmental parameters. The pair-end sequencing method of 16S rDNA was used for taxonomic determination of the microbial community. All statistical analyses were performed in the R environment. The most abundant bacterial communities in the study area in both seasons belonged to phyla Actinobacteriota, Bacteroidota, Cyanobacteria, Proteobacteria and Verrucomicrobiota. In streams connecting the lakes phylum Actinobacteria was more abundant, with higher abundance in September. In other surface streams, not so common phyla Bdellovibrionota, with higher abundance in May, and Patescibacteria in September, were found. Phyla Bacteroidota and Cyanobacteria had higher abundance in May and the phylum Verrucomicrobiota in September, in all samples. In particular, the samples from the streams connecting the lakes had a different microbial community and the Korana River community was similar to these very samples.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

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