Long chain alkyl diols distribution in costal seas ...

• Main Authors: Lattaud, Julie, Kim, Jung-Hyun, De Jonge, Cindy, Zell, Claudia, Sinninghe Damsté, Jaap S, Schouten, Stefan
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2017
• Subjects: Kara Sea
• Online Access: https://dx.doi.org/10.1594/pangaea.870476; https://doi.pangaea.de/10.1594/PANGAEA.870476

Long chain alkyl diols are lipids that occur ubiquitously in marine sediments and are used as a proxy for sea surface temperature (SST), using the Long chain Diol Index (LDI), and for upwelling intensity/high nutrient conditions. The distribution of 1,13- and 1,15-diols has been documented in open marine and lacustrine sediments and suspended particulate matter, but rarely in coastal seas receiving a significant riverine, and thus continental organic matter, input. Here we studied the distribution of diols in four shelf seas with major river outflows: the Gulf of Lion, the Kara Sea, the Amazon shelf and the Berau delta, covering a wide range of climate conditions. The relative abundance of the C32 1,15-diol is consistently higher close to the river mouth and particularly in the suspended particulate matter of the rivers suggesting a terrigenous source. This is supported by statistical analysis which points out a significant positive correlation between the C32 1,15-diol and the Branched and Isoprenoid ... : Supplement to: Lattaud, Julie; Kim, Jung-Hyun; De Jonge, Cindy; Zell, Claudia; Sinninghe Damsté, Jaap S; Schouten, Stefan (2017): The C32 alkane-1,15-diol as a tracer for riverine input in coastal seas. Geochimica et Cosmochimica Acta, 202, 146-158 ...