Supplement to: Doering, Kristin; Ehlert, Claudia; Martinez, Philippe; Frank, Martin; Schneider, Ralph R (2018): Latitudinal variations of δ30Si and δ15N signatures along the Peruvian shelf: quantifying the effects of nutrient utilization versus denitrification over the past 600 years. Biogeosciences Discussions, 16, 1-23, https://doi.org/10.5194/bg-16-2163-2019