Contents Blümel, Wolf Dieter, THieDe, Jörn, and NarmaNN, ruth: Preface . . . . . . . . . . . . . . . . . 9 acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 THieDe, Jörn: aims of the leopoldina Symposium on russian-German cooperation in the Scientific exploration of Northeastern eurasia: a Personal and eclectic View . . . . . . 15 kroPacHeV, Nikolay m.: Welcome Speech . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 kрoпaчeв, Николаи m.: приветственное Слово . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Blümel, Wolf Dieter: Welcome address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Leopoldina Lecture THieDe, Jörn: From lomonosov to modern Times: eclectic History of russian-German cooperation in the Scientific exploration of High Northern latitudes . . . . . . . . . . . . 27 Extended Contributions Research infrastructure in Northern Sibiria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 HEiMANN, Martin, ScHULzE, Ernst-Detlef, WiNDERLicH, Jan, ANDREAE, Meinrat O., cHi, Xuguang, GERBiG, christoph, kOLLE, Olaf, küBLER, karl, LAVRic, Jost, MikHAiLOV, Eugene, PANOV, Alexey, PARk, Sungbin, RöDENBEck, christian, and SkOROcHOD, Andrej: The zotino Tall Tower Observatory (zOTTO): Quantifying Large Scale Biogeochemical changes in central Siberia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 HuBBerTeN, Hans-Wolfgang, and GriGorieV, mikhael N.: The New arctic research Station “Samoylov island” in the lena Delta: Prospects of Joint russian-German Studies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 kuzNeTSoV, Vladislav, Y.: methods of radiochronology of Quaternary Sediments: modern approaches and results of Studies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 Session I Summary Environmental change in Northern Eurasia in Real Time Session chair: Jörn THieDe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 5 ScHWAMBORN, Georg, RAcHOLD, Volker, GRiGORiEV, Mikhail, and kRBETScHEk, matthias: Sedimentation History in the lena Delta, Northern Siberia . . . . . . . . . . . . . . . . . . . . . 95 FEDOROVA, irina V., cHETVEROVA, Antonina A., BOLSHiyANOV, Dmitry yu., MAkAROV, Aleksandr S., BOikE, Julia, MORGENSTERN, Anne, and HEiM, Birgit: Hydrology of the lena river Delta . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 SEMENOVA, Olga, and LEBEDEVA, Lyudmila S.: Advanced Process-Based Hydrological Modelling as an Effective Tool for Assessment of changes of the Arctic Environment in Different Temporal and Spatial Scales . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 iVANOV, Vladimir V., cHERNyAVSkAyA, Ekaterina V., MASLOV, Pavel, AkSENOV, yevgeny, and cUEVAS, Beverly DE: Shelf-Basin Exchange in the Laptev Sea in the Warming climate: The Joint roles of atmospheric Forcing and Hydrography . . . . . . . . . . . . . . . . 105 SemerYuk, irina, and BaucH, Dorothea: Distribution of Sea ice Derived Brine Signals from the Siberian Shelf area Based on Stable oxygen isotope and Salinity Data . . . . 109 Session II Summary continental Siberia: Dynamics of Permafrost Landscapes and carbon Fluxes Session chair: mikhael N. GriGorieV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115 urBaN, anna a.: Genesis and age of Pingo Structures in the lena Delta, Northeast Siberia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 ANTciBOR, iulia, EScHENBAcH, Annette, kUTzBAcH, Lars, BOLSHiyANOV, Dmitry, and PFEiFFER, Eva-Maria: content and Distribution of Trace Metals in Permafrost-affected Soils of Northern Siberia, russia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121 zUBRzycki, Sebastian, DESyATkiN, Alexey R., kUTzBAcH, Lars, and PFEiFFER, Eva-Maria: carbon Stocks in Permafrost-affected Soils in the lena river Delta . . . . . . . . . . . . . 127 EVGRAFOVA, Svetlana, and WAGNER, Dirk: Microbial Methane Driving Processes in Siberian arctic and Sub-arctic cryosols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129 BARANSkAyA, Alisa V.: The Latest Tectonic Movements in key Areas on the coasts and islands of the laptev Sea . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131 GRiGORiEV, Mikhail N.: Erosion Rates and Terrigenous Sediment Fluxes in the Lena Delta region (east Siberian arctic) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135 SANDERS, Tina, FiENckE, claudia, and PFEiFFER, Eva-Maria: Nitrogen Availability, Turnover and Limitation in Permafrost Affected Soils of Samoylov island in the Lena Delta, Northeast Siberia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139 6 VAkHRAMEEVA, Polina S., BiSkABORN, Boris k., BOLSHiyANOV, Dmitry yu., DiEkMANN, Bernhard, SAVELiEVA, Larissa A., and SUBETTO, Dmitry A.: Sedimentological Studies of High Latitude Lake Sediments Aimed at Palaeoenvironmental Reconstructions: an example from the lena Delta Hinterland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141 cHETVEROVA, Valentina A., DEREVyANkO, Luda G., and GUSEV, Evgeny A.: Palynological characteristics of lower Yenisey Quaternary Deposits . . . . . . . . . . . . . . . . . . . . . . . . 145 Session III Summary The Paleoenvironmental History of Siberian Permafrost Landscapes Session chair: Hans-Wolfgang HuBBerTeN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151 SAVELiEVA, Larissa A., BOLSHiyANOV, Dmitry yu., HERzScHUH, Ulrike, VAkHRAMEEVA, Polina S., BiSkABORN, Boris, and DiEkMANN, Bernhard: Vegetation History of the lower lena river from Pollen records of lake Sediments . . . . . . . . . . . . . . . . . . . . . . . . . . 155 RUDAyA, Natalya A., ANDREEV, Andrei, WETTERicH, Sebastian, and ScHiRRMEiSTER, Lutz: climate and Vegetation of Late Pleistocene in the East Siberian Arctic Based on Pollen Data from Bol’shoy lyakhovsky island . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157 MORGENSTERN, Anne, GüNTHER, Frank, ULRicH, Mathias, FEDOROVA, irina V., RUDAyA, Natalya A., BOikE, Julia, and ScHiRRMEiSTER, Lutz: Evolution of Thermokarst Lakes and alasses in the ice-rich Permafrost of the lena river Delta . . . . . . . . . . . . . . . . . 163 RAScHkE, Elena, ANDREEV, Andrei, FEDOROV, Grigory, ScHWAMBORN, Georg, and ScHiRRMEiSTER, Lutz: Late Pleistocene and Holocene Vegetation History Deduced from Palynological investigations of the Permafrost Records of the El’gygytgyn impact crater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165 NAzAROVA, Larisa B., TUMANOV, Oleg N., HERzScHUH, Ulrike, FROLOVA, Larisa A., and PESTRyAkOVA, Lyudmila A.: Tracking Environmental change Using invertebrate Bioindicators from the lakes of Yakutia (Siberia, russia) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169 FROLOVA, Larisa A., GAFiATULLiNA, Liliya i., NAzAROVA, Larisa B., and WETTERicH, Sebastian: Palaeoenvironmental investigations and Reconstructions in Northern Russia using Subfossil Cladocera (Branchiopoda, Crustacea) . . . . . . . . . . . . . . . . . . . . . . . . 173 Session IV Summary Siberian Shelf Seas and the Adjacent Arctic Ocean Session chair: Heidemarie kaSSeNS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179 7 JUHLS, Bennet, kiRiLLOV, Sergey A., HöLEMANN, Jens, TiMOkHOV, Leonid A., kASSENS, Heidemarie, HEiM, Birgit, NOVikHiN, Andrey, and JANOUT, Markus: Oceanography of the laptev Sea . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181 WEGNER, carolyn, WiTTBRODT, kerstin, BAUcH, Dorothea, HöLEMANN, Jens A., JANOUT, Markus, NOVikHiN, Andrey, HEiM, Birgit, kiRiLLOV, Sergey, kASSENS, Heidemarie, and TiMOkHOV, Leonid: Summer Sediment Transport Dynamics on the Laptev Sea Shelf (Siberian arctic) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183 POLyAkOVA, yelena, kRyUkOVA, irina, kLyUViTkiNA, Tatiana, NOVicHkOVA, yekatherina, and MANkO, Nataliya: Living and Fossil Microalgae from the Eurasian Arctic Seas as indicators of modern and Past environmental changes . . . . . . . . . . . . . . . . . . . . . . . . 185 TALDENkOVA, Ekaterina, cHiSTyAkOVA, Natalia, BAUcH, Henning A., STEPANOVA, Anna, OVSEPyAN, yaroslav, and SPiELHAGEN, Robert F.: Past Environmental Transformation of the Laptev Sea continental Margin and Water Mass changes since Last Deglacial Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189 BAUcH, Henning A., OVSEPyAN, yaroslav, TALDENkOVA, Ekaterina, STEPANOVA, Anna, and RUDENkO, Olga: A Multiproxy Reconstruction of the Last interglacial Environmental conditions in Northern russia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191 SPiELHAGEN, Robert F., WERNER, kirstin, cHiSTyAkOVA, Natalia, and TALDENkOVA, Ekaterina: Holocene Variability of atlantic Water advection to the arctic ocean . . . . . . . . 195 kRyUkOVA, irina, POLyAkOVA, yelena, ABRAMOVA, Ekaterina, MARTyNOV, Fedor, NOVikHiN, Andrey, kASSENS, Heidemarie, and HöLEMANN, Jens: Ecological and Geographical characteristics of Phytoplankton in the Eastern Laptev Sea (Autumnal Season 2008) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197 8