Naslov
Seasonal changes in density and biomass of ciliated protozoa in the eutrophicated part of Kaštela Bay (Middle Adriatic)

Autori
Bojanić, Natalia

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Program and abstracts / Cavallaro, G. ; Luporini, P. - San Benedetto del Tronto, 2003, 115-115

Skup
The 4th European congress of protistology and the 10th European conference on ciliate biology

Mjesto i datum
San Benedetto del Tronto, Italija, 31.08.2003. - 05.09.2003

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
ciliated protozoa; biomass; Adriatic Sea

Sažetak
Seasonal distribution of the ciliated protozoa was studied in the eastern part of the Kaštela Bay from May 1998 until November 1999. Besides the abundance, we calculated biovolume of ciliates applying geometrical method and transformed those values into carbon biomass. These are the first data for annual variability of non-loricate ciliates and tintinnines in eutrophicated area of the Kaštela Bay. The biomass data are the first for the middle Adriatic and one of very few for the whole Adriatic Sea. The ciliates showed peaks in spring and autumn, what was primarily influenced by seasonal distribution of tintinnines. This group participated in total ciliate number and biomass with 40.48% and 60.02%, respectively. Quantitatively dominant tintinnine species were Helicostomella subulata and Codonellopsis schabi, that could have importance in microbial food web in coastal ecosystems. The highest tintinnine density was 4278 ind.l-1, while their average biomass oscillated from 0.611 to 26.557 μ gC l-1. Annual variability of the non-loricate density was influenced by changes in numbers of the second (103-104 μ m3) and the third (104-105 μ m3) size categories and the biomass variability with the organisms >104 μ m3. Maximal average density and biomass of non-loricates were 1430 ind.l-1 and 3.925 mgC l-1, respectively. High abundance and biomass values of investigated zooplankton groups point the importance of these organisms in the secondary production in the Bay, indicating that they could act as crucial factor in control of populations of nano and pico phytoplankton and heterotrophic nanoflagellates as well as a prey for larger micrometazoans.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA