HNA and LNA bacteria in relation to the activity of heterotrophic bacteria (CROSBI ID 185301)
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Podaci o odgovornosti
Šantić, Danijela ; Krstulović, Nada ; Šolić, Mladen ; Kušpilić, Grozdan
engleski
HNA and LNA bacteria in relation to the activity of heterotrophic bacteria
One-year survey of HNA and LNA heterotrophic bacteria abundance and its relation to bacterial production was conducted in the middle and southern Adriatic. The average abundance of heterotrophic bacteria in the central and southern coastal areas of the eastern coast of the Adriatic Sea ranged from 0.24 × 106 to 2.39 × 106 cells ml-1 and in the open sea area it ranged from 0.23 × 106 to 0.63 × 106 cells ml-1. Elevated average abundances were found in the coastal area of Šibenik and in Kaštela Bay. The average monthly percnetage of HNA bacteria in the central and southern coastal areas investigated ranged from 21.48 to 93.18%, while in the open sea HNA ranged from 28.62 to 65.62%. The seasonal distribution at the coastal areas mostly showed simultaneously the prevalence of LNA bacteria in the bacterial community and the high values of bacterial production, rescpetivelly during spring and summer. The prevalence of the HNA group in the bacterial community was found during colder seasons together with low values of bacterial production. Exceptions are identified in the areas influenced by rivers with the highest bacterial production, where HNA bacteria were dominant in the microbial community during all four seasons. On the open sea during the highest values of bacterial production looking seasonally, and vertically water column was dominated by LNA bacteria, indicating the importance of both groups of bacteria in the marine ecosystems of the waters studied.
heterotrophic bacteria ; HNA ; LNA ; bacterial production ; Adriatic Sea
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