Pregled bibliografske jedinice broj: 472359
Structure of microbial community in respect to hypoxia in meromictic lake.
Structure of microbial community in respect to hypoxia in meromictic lake. // The 11th Symposium on Aquatic Microbial Ecology, August 30 - September 04 2009, Piran, Slovenia. / Valentina Turk & Samo Turk (ur.).
Piran: Lotos d.o.o. Postojna, 2009. str. 147-147 (poster, međunarodna recenzija, sažetak, znanstveni)
CROSBI ID: 472359 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Structure of microbial community in respect to hypoxia in meromictic lake.
Autori
Šestanović, Stefanija ; Šantić, Danijela
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
The 11th Symposium on Aquatic Microbial Ecology, August 30 - September 04 2009, Piran, Slovenia.
/ Valentina Turk & Samo Turk - Piran : Lotos d.o.o. Postojna, 2009, 147-147
ISBN
978-961-92543-1-8
Skup
11th Symposium on Aquatic Microbial Ecology
Mjesto i datum
Piran, Slovenija, 30.08.2009. - 04.09.2009
Vrsta sudjelovanja
Poster
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
heterotrophic bacteria; HNF; meromictic; hypoxia; volume
Sažetak
Bacterial abundance, biomass, volume and bacterial activity were studied in water column samples collected from small meromictic saline lake during the holomictic period (Rogoznica Lake, Croatia). Special attention was paid to the impact of water column hypoxia on investigated parameters. The abundances of heterotrophic (HNF) and autotrophic (ANF) nanoflagellates were also investigated in order to determine their relevance in regulation of bacterial population density and activity. Bacterial abundances did not exhibit considerable changes in respect to water column hypoxia ranging from 3.10 to 3.73 x 106 cells ml-1. During hypoxia bacterial biomass ranged from 9.14 to 19.64 mg C ml-1 and was two times greater than the values recorded after hypoxic event. Bacterial cell specific volume ranged from 0.009 to 0.296 m3 and was always higher during hypoxia. Bacteria with low DNA content dominated the bacterial community in hypoxic environment accounting from 76 to 80% of total number of bacteria. The abundances of HNF and ANF decreased 5-7 times in the presence of low O2 concentrations implying their strong relation to the oxygen concentrations in water. HNF exerted strong influence on bacterial population in oxic environment as revealed by high coefficient of determination (R= -0.65 n=14, p< 0.05).
Izvorni jezik
Engleski
Znanstvena područja
Biologija
POVEZANOST RADA
Projekti:
001-0013077-0845 - Uloga planktonskih zajednica u protoku energije i kruženju tvari u Jadranu (Krstulović, Nada, MZOS ) ( CroRIS)
Ustanove:
Institut za oceanografiju i ribarstvo, Split
