The study of past sedimentary records from coastal margins allows us to reconstruct variations in terrestrial input into the marine realm and to gain insight into continental climatic variability. There are numerous organic proxies for tracing terrestrial input into marine environments but none that strictly reflect the input of river-produced organic matter. Here, we test the fractional abundance of the C32 alkane 1,15-diol relative to all 1,13- and 1,15-long-chain diols (FC32 1, 15) as a tracer of input of river-produced organic matter in the marine realm in surface and Quaternary (0-45 ka) sediments on the shelf off the Zambezi and nearby smaller rivers in the Mozambique Channel (western Indian Ocean). A Quaternary (0-22 ka) sediment record off the Nile River mouth in the eastern Mediterranean was also studied for long-chain diols. For the Mozambique Channel, surface sediments of sites most proximal to Mozambique rivers showed the highest F1, 15 - C32 (up to 10 k%). The sedimentary record shows high ... : Supplement to: Lattaud, Julie; Dorhout, Denise J C; Schulz, Hartmut; Castañeda, Isla S; Schefuß, Enno; Sinninghe Damsté, Jaap S; Schouten, Stefan (2017): The C32 alkane-1,15-diol as a proxy of late Quaternary riverine input in coastal margins. Climate of the Past, 13(8), 1049-1061 ...