Rontani, Jean-François; Smik, Lukas; Belt, Simon T.; Vaultier, Frédéric; Armbrecht, Linda; Leventer, Amy; Armand, Leanne
In some previous studies, the ratio between a di-unsaturated highly branched isoprenoid (HBI) lipid termed IPSO25 and a structurally related tri-unsaturated counterpart (HBI III) (viz. IPSO25/HBI III) has been used as a proxy measure of variable sea ice cover in the Antarctic owing to their production by certain sea ice algae and open water diatoms, respectively. To investigate this further, we quantified selected lipids and their photo- and autoxidation products in samples of suspended...[Show more]
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