Naslov
Global warming and oligotrophication synergy leads to greater phytoplankton lipid production

Autori
Novak, Tihana ; Godrijan, Jelena ; Marić Pfannkuchen, Daniela ; Djakovac, Tamara ; Medić, Nikola ; Ivančić, Ingrid ; Mlakar, Marina ; Gašparović, Blaženka

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

Izvornik
Keynote and Oral Papers / Ljubešić, Zrinka ; Bosak, Sunčica - Zagreb : European Journal of Phycology, 2019, 31-117

Skup
7th European Phycological Congress

Mjesto i datum
Zagreb, Hrvatska, 25.08.2019. - 30.08.2019

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Chaetoceros pseudocurvisetus ; marine lipids ; temperature ; nutrients ; diatoms

Sažetak
Earth temperature is rising and oligotrophication is becoming apparent even in coastal seas. In a highly changing environment, phytoplankton use carbon and nutrients to form important biomolecules, including lipids. However, the link between lipid production and changing environment is still unexplored. In order to investigate phytoplankton lipid production under different temperature, salinity and nutrient regimes we conducted batch cultures and in situ experiments. The diatom Chaetoceros pseudocurvisetus cultures were grown under controlled temperatures ranging from 10 to 30 °C and nutrient regimes mimicking oligotrophic and eutrophic conditions. Results were compared to plankton community’s lipid production in the northern Adriatic at two stations considered as oligotrophic and mesotrophic during an annual monthly sampling. In order to gain detailed information on the investigated system, we supplemented lipid data with chlorophyll a concentrations, phytoplankton taxonomy, cell abundances and nutrient concentration along with hydrographic parameters. We found enhanced particulate lipid production at higher temperatures, and substantially higher lipid production in oligotrophic conditions. Lipid remodeling, including change in the ratio of phospholipids and glycolipids, is more affected by the nutrient status, than the temperature increase. Triacylglycerol accumulation was observed under starvation.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Biologija, Interdisciplinarne prirodne znanosti

POVEZANOST RADA