Naslov
Role of predation in controlling bacterial and heterotrophic nanoflagellates standing stocks in the coastal Adriatic Sea: Seasonal patterns

Autori
Šolić, Mladen ; Krstulović, Nada

Izvornik
Marine Ecology Progress Series (0171-8630) 114 (1994), 3; 219-235

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Bacteria; Carbon flux; Ciliates; Heterotrophic nanoflagellates; Microbial loop

Sažetak
The role of bacteria and heterotrophic nanoflagellates (HNF) in the microbial food web was studied over 1992/93 in Kaštela Bay (Adriatic Sea). The average production of bacteria (12.3 ug C d-1) and HNF (4.8 ug C d-1) suggests that these organisms fix a significant amount of organic carbon. Small HBF (<8 um) were the most important bacterial grazers, accounting, on average, for 80% of the total grazing on bacteria, whereas abundance and production of HNF were controlled by ciliate grazing. Bacteriovorous protozoa stimulated bacterial growth and contributed to an enhanced turnover of bacterial biomass.About 20% of annual bacterial production was channeled through the microbial loop. However, bacterial carbon flux through the microbial loop showed marked seasonal oscillations with considerably higher values recorded during the warmer part of the year (June to November). Thus, in that period the microbial loop could be an important link between primary production and higher trophic lecels.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

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