Fig. 5: Compound-specific isotope analyses on sponge PLFAs.
From: Giant sponge grounds of Central Arctic seamounts are associated with extinct seep life
Compound-specific δ13C (‰) on PLFA on the three sponge species analyzed: G. parva (GP) G. hentscheli (GH), and S. rhaphidiophora (SR). Different biomarkers were color code: palmitic acid (C16:0, white), bacteria-specific (gray), algae-specific (green), and sponge-specific (blue) markers. The lower and upper hinges of the boxes correspond to the 25th and 75th percentiles and the whiskers represent the 1.5x inter-quartile range (IQR) extending from the hinges. The median is indicated in the box plot as a solid line. The number in the plot indicates biological independent specimen. Source data are provided as a Source Data file. PUFA polyunsaturated fatty acids (FA), SFA straight-chain saturated FA, i/ai-BFA iso/anteiso branched C15-C17 FA, MBFA mid-methyl-branched FA, MUFA monounsaturated FA, Cy-SFA cyclopropyl-saturated FA, MBUFA mid-methyl-branched-unsaturated FA, LC_PUFA long-chain polyunsaturated FA.
