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Microbial community structure of two anchialine caves on Mljet Island (Adriatic Sea) (CROSBI ID 614323)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija

Krstulović, Nada ; Šolić, Mladen ; Šantić, Danijela ; Maršić-Lučić, Jasna ; Ordulj, Marin ; Šestanović, Stefanija Microbial community structure of two anchialine caves on Mljet Island (Adriatic Sea) // A variety of interactions in the marine environment. Abstracts Volume From 49th European Marine Biology Symposium. Sankt Peterburg: Zoological Institute Russian Academy of Sciences, 2014. str. 71-72

Podaci o odgovornosti

Krstulović, Nada ; Šolić, Mladen ; Šantić, Danijela ; Maršić-Lučić, Jasna ; Ordulj, Marin ; Šestanović, Stefanija

engleski

Microbial community structure of two anchialine caves on Mljet Island (Adriatic Sea)

The microbial abundances, including bacteria, viruses, and heterotrophic nanoflagellates, was determined for two anchialine caves located on the Island of Mljet (Adriatic Sea): Bjejajka Cave and Lenga Pit. Both caves are situated approximately 100 m from the coast with extensive subterranean connections to the sea, resulting in noticeable marine and terrestrial, influences. Because of the shallow settings of the studied caves, they represent habitats with a minimal light or complete darkness where photosynthesis is minimal or not possible. Thus, during the surveys there was no evidence of cyanobacterial cells in either caves, but the presence of bacteria, viruses and heterotrophic nanoflagellates (HNF) was established. Further, bacterial abundance was higher in caves in comparison to surrounding open seawater. In the surrounding seawater the predominance of the LNA group over HNA is determined, which also indicates the differences in relation to the studied caves. In fact, the dominance of HNA group of bacteria in caves together with higher total bacterial abundance indicates that the caves are of higher trophic level than the surrounding seawater. With regard to bacterial diversity, both caves had a unique makeup of bacterial populations and low diversity, with the chemolithoautotrophic Epsilonproteobacteria representing the most abundant taxonomic group. To examine the mechanisms regulating bacterial abundance in these habitats, we observed the relationship between bacteria and heterotrophic nanoflagellates (HNF) and between bacteria and viruses. The importance of predation in controlling bacteria (top down control) and, consequently, the domination of bottom up control of HNF were observed in both caves.

Anchialine caves ; Cyanobacteria ; Bacteria ; Viruses ; Heterotrophic nanoflagellates

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Podaci o prilogu

71-72.

2014.

objavljeno

Podaci o matičnoj publikaciji

A variety of interactions in the marine environment. Abstracts Volume From 49th European Marine Biology Symposium

Sankt Peterburg: Zoological Institute Russian Academy of Sciences

Podaci o skupu

49th European Marine Biology Symposium

poster

08.09.2014-12.09.2014

Sankt Peterburg, Ruska Federacija

Povezanost rada

Biologija

Poveznice