Naslov
Seasonal switching between relative importance of bottom-up and top-down control of bacterial and heterotrophic nanoflagellate abundance

Autori
Šolić, Mladen ; Krstulović, Nada ; Bojanić, Natalia ; Marasović, Ivona ; Ninčević, Živana

Izvornik
Journal of the Marine Biological Association of the United Kingdom (0025-3154) 78 (1998); 755-766

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

Ključne riječi
Bottom-up; Top-down; Bacteria; Heterotrophic nanoflagellates; Adriatic Sea

Sažetak
Seasonal dynamics of bacterial and heterotrophic nanoflagellate (HNF) species assemblages were analysed in Kaštela Bay (middle Adriatic Sea). Dominant patterns identified were: (1) during summer and autumn bacterial abundance was mainly controlled by HNF grazing (top-down), whereas HNF abundance was controlled by bacterial abundance (bottom-up); (2) during winter and spring the coupling between bacteria and HNF was very weak, and bacterial abundance was mainly controlled by zooplankton grazimg (top-down); (3) throughout the year, both bacterial and HNF species assemblages alternated with two periods of stable abundance, first with high and second with low values; (4) top-down effect was dominant in bacterial switching from stable abundance with high values to stable abundance with low values, whereas bottom-up model dominated in inverese process; and vice versa for HNF.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA