Total organic carbon in surface sediments of the Ob and Yenisei estuaries and adjacent coastal areas, appendix 1, supplement to: Boucsein, Bettina; Fahl, Kirsten; Siebold, Martina; Stein, Ruediger (1999): Quantity and quality of organic carbon in surface sediments of the Ob and Yenisei estuaries and adjacent coastal areas: marine productivity vs. terrigenous input. In: Matthiessen, J; Stepanets, O V; Stein, R; Fütterer, D K & Galimov, E M (eds.), The Kara Sea Expedition of RV Akademik Boris Petrov 1997: First Results of a Joint Russian-German Pilot Study, Reports on Polar Research, Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, 300, 116-126

Bettina Boucsein, Kirsten Fahl, Martina Siebold & Ruediger Stein
Two main mechanisms are controlling the accumulation of organic matter in the sediments of the Kara Sea. The large rivers Ob and Yenisei supply significant quantities of freshwater onto the shelf (Lisitsyn and Vinogradov, 1995; Bobrovitskaya et al., 1996; Johnson et al., 1997) and deliver terrigenous organie matter and aquatic algae. Additionally, marine organic matter is produced in the water column.In order to distinguish between the different sources of the organic material maceral analysis, organic-geochemical...
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