Naslov
Distribution and calcification index of coccolithophore Emiliania huxleyi with the respect to seasonal variations

Autori
Arapov, Jasna ; Bužančić, Mia ; Skejić, Sanda ; Bakrač, Ana ; Straka, Maja ; Ninčević Gladan, Živana

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

Izvornik
6th Croatian Botanical Symposium 2019. Book of Abstracts / - , 2019, 37-37

Skup
6th Croatian Botanical Symposium 2019.

Mjesto i datum
Zagreb, Hrvatska, 30.09.2019. - 01.10.2019

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
coccolithophores, Emiliania huxleyi, morphology, calcification index, Adriatic Sea

Sažetak
Vertical distribution and morphology of coccolithophore Emiliania huxleyi was investigated in open waters of Central Adriatic Sea throughout one year period, using Scanning Electron Microscopy. Emiliania huxleyi is generally the most spread coccolithophore in the world oceans and also in the Adriatic. Abundance of E. huxleyi was higher during the winter season reaching up to 2, 5 x 104 cells L-1. Regarding the contribution of this species to coccolithophore assemblage, it was dominant in period from November till March at all sampled depths. In warmer months it contributes more at depth of 50m and below. Degree of E. huxleyi coccoliths calcification was measured for two opposite seasons: winter and summer (January and July). The results showed higher calcification index in January which was supported with negative Spearman rank correlation with temperature. Also, the abundance and ratio of E. huxleyi was negatively correlated with temperature. In this study, beside the dominant morphotype E. huxleyi type A, several cells of E. huxleyi type O have been recorded. The morphotype O was observed for the first time in the Adriatic Sea.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA