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Xpedition TAYMY Tion KOLYMA 1995 of the Ushchino Olshiyanov and Ans erman Cooperation: xpedition TAYMY tion KOLYMA 1995 of the ushchino olshiyanov and ans-W Hubberten with contributions of the participants Ber. Polarforsch, 21 1 (1996) ISSN 0176 - 5027 CONTENTS The Expedition Taymyr 1995. by D.Yu. Bolshianov and H.-W. Hubberten 1 INTRODUCTION......................................................................... 2 SUMMARY AND EXPEDITION ITINERARY.......................... 2.1 Time frame. regions and scope of work ................................. 2.2 Transport and radio communication....................................... 2.3 Nature protection measures..................................................... 3 PALEOGEOGRAPHICAL AND GEOMORPHICAL STUDIES .................................................................................... 3.1 The relief and quaternary deposits of the Verkhnyaya Taymyra - Logata area .............................................................. 3.2 Levinson Lessing Lake area .................................................... 4 GEOCRYOLOGICAL AND PALEOGEOGRAPHICAL STUDIES IN THE LABAZ LAKE AREA .................................. 4.1 Introduction ................................................................................ 4.2 Paleogeographical studies On permafrost sequences ....... 4.3 Climatic influence On geocryological and sedimentary processes ................................................................................... 4.4 Ground temperature measurements ..................................... 4.5 Investigation of ground ice ...................................................... 4.6 Mapping of permafrost landscape at Labaz Lake ............... CHARACTERIZATION OF THE ORGANIC MATTER IN PERMAFROST SOILS AND SEDIMENTS OF THE TAYMYR PENINSULAISIBERIA AND SEVERNAYA ZEMLYAIARCTIC REGION ...................................................... Labaz Lake ................................................................................ Materials and methods............................................................. Soils of Lake Labaz region ..................................................... Carbon dynamics ...................................................................... Levinson Lessing Lake............................................................ Materials and methods............................................................ Investigation area..................................................................... Soils of Levinson Lessing Lake region................................ Carbon dynamics ..................................................................... Soil organic matter in different permafrost-affected sites of the Severnaya Zemlya Islands IArctic region ................ Objectives .................................................................................. Materials and methods............................................................ Short characterization of Severnaya Zemlya region ........ First results ................................................................................ Soils of Severnaya Zemlya Islands ..................................... Carbon and nitrogen contents .............................................. Planned research in 1995196 ............................................... SOM and isotope analysis .................................................... Terrestrial biomarkers ............................................................ Co-ordination with other working groups ........................... MICROBIOLOGICAL AND BIOTOPICAL STUDIES ......... Introduction .............................................................................. Labaz Lake............................................................................... Objective ................................................................................... Methods .................................................................................... Results ....................................................................................... Climatic and microclimatic conditions ................................. C02 flux measurements ......................................................... Harvests .................................................................................... Soil microbiology .................................................................... Taymyr pensinsula .................................................................. Severnaya Zemlya .................................................................. Geobotanical studies .............................................................. Geobotanical studies .............................................................. Localities ................................................................................... Material and methods ............................................................. Lichonological studies ............................................................ Soil micromycetes ................................................................... HYDROLOGICAL STUDIES ................................................. Processes in the water column of Levinson-Lessing Lake ........................................................................................... Introduction ............................................................................... Field work .................................................................................. First results ................................................................................ Hydrological Investigations at the Krasnaya river .............. Methods ...................................................................................... Measurements of water discharge ......................................... Measurements of electric conductivity, temperature and pH-values ................................................................................... Suspended sediment sampling ............................................. Preliminary results .................................................................... Water level, water velocity, discharge ................................... Electric conductivity, pH-values and water temperature .... Suspended sediment concentration ..................................... Active layer hydrology .............................................................. Hydrological observations at the Upper Taymyra and Logata rivers .............................................................................. Soil nutrition distribution in active layer during freezeback, Taymyr, Siberia ......................................................................... 109 Introduction ................................................................................ 109 Objective .................................................................................... 109 Methods ..................................................................................... 109 Analyses .................................................................................... 110 LACUSTRINE GEOLOGICAL STUDIES ............................. 111 Lake sediment sampling on Taymyr peninsula ................. 111 Objectives .................................................................................. 111 Itinerary ...................................................................................... 111 Climate and geography .......................................................... 114 Methods of Sampling .............................................................. 114 Sediments ................................................................................. 115 8.2 Pilot study of lakes on the Severnaya Zemlya Archipelago .............................................................................. 122 9 ENVIRONMENT STUDIES ................................................... 125 9.1 Snow cover studies ................................................................ 125 9.2.1 Ecological and ecological-hygienic studies ...................... 128 9.2.2 Radioecological studies ........................................................ 128 9.3 The ITEX site ............................................................................ 131 10 REFERENCES ........................................................................ 133 ANNEX ...................................................................................... 138 List of samples and stations .................................................. 138 Samples for isotope analysis from Labaz Lake area ....... 139 Samples for analysis of water from Labaz Lake area ...... 145 Samples for C-14 datings from Labaz Lake area ............. 147 Main site characteristics of Severnaya Zemlya Islands ... 148 Plant and soil samples for biomarkers ................................ 152 Microbiological samples of Taymyrlsevernaya Zemlya .. 153 List of water samples collected in Levinson Lessing Lake area ........................................................................................... 154 Lake sediment samples of Taymyr ...................................... 168 Ecological samples ................................................................ 170 Raioecological samples ........................................................ 172 11.2 Tables with first results ........................................................... 174 11 . 2.1 List of plant species ................................................................ 175 11 . 2.2 Birds observed during the expedition ................................. 184 11.3 Characterization
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