caa a22 4500 46321613X CHVBK 20180405153157.0 cr unu---uuuuu 170326e20070201xx s 000 0 eng 10.1007/s00367-006-0049-8 doi (NATIONALLICENCE)springer-10.1007/s00367-006-0049-8 Biomarker records, organic carbon accumulation, and river discharge in the Holocene southern Kara Sea (Arctic Ocean) [Elektronische Daten] [K. Fahl, R. Stein] Within the Russian-German research project on "Siberian River Run-off (SIRRO)” dealing with freshwater discharge and its influence on biological, geochemical, and geological processes in the Kara Sea, sedimentological and organic-geochemical investigations were carried out on two well-dated sediment cores from the Yenisei Estuary area. The main goal of this study was to quantify terrigenous organic carbon accumulation based on biomarker and bulk accumulation rate data, and its relationship to Yenisei river discharge and climate change through Holocene times. The biomarker data in both cores clearly indicate the predominance of terrigenous organic matter, reaching 70-100 and 50-80% of total organic carbon within and directly north of the estuary, respectively. During the last ca. 9cal ka b.p. represented in the studied sediment section, siliciclastic sediment and (terrigenous) organic carbon input was strongly influenced by postglacial sea-level rise and climate-related changes in river discharge. The mid-Holocene Climatic Optimum is documented by maximum river discharge between 8.2 and 7.3cal ka b.p. During the last 2,000years, river discharge probably decreased, and accumulation of both terrigenous and marine organic carbon increased due to enhanced coagulation of fine-grained material. Springer-Verlag, 2007 Fahl K. Alfred Wegener Institute for Polar and Marine Research, 27568, Bremerhaven, Germany aut Stein R. Alfred Wegener Institute for Polar and Marine Research, 27568, Bremerhaven, Germany aut Geo-Marine Letters Springer-Verlag 27/1(2007-02-01), 13-25 0276-0460 27:1<13 2007 27 367 https://doi.org/10.1007/s00367-006-0049-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00367-006-0049-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Fahl K. Alfred Wegener Institute for Polar and Marine Research, 27568, Bremerhaven, Germany aut NATIONALLICENCE 700 1- Stein R. Alfred Wegener Institute for Polar and Marine Research, 27568, Bremerhaven, Germany aut NATIONALLICENCE 773 0- Geo-Marine Letters Springer-Verlag 27/1(2007-02-01), 13-25 0276-0460 27:1<13 2007 27 367 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer