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  • 1
    Call number: ZS-090(466) ; ZSP-168-466
    In: Berichte zur Polar- und Meeresforschung
    Type of Medium: Series available for loan
    Pages: iv, 341 S.
    ISSN: 1618-3193
    Series Statement: Berichte zur Polar- und Meeresforschung 466
    Classification:
    Oceanology
    Language: English
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  • 2
    Series available for loan
    Series available for loan
    Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung
    Associated volumes
    Call number: ZSP-168-539 ; ZS-090(539)
    In: Berichte zur Polar- und Meeresforschung
    Type of Medium: Series available for loan
    Pages: 123 S. : Ill., graph. Darst., Kt.
    ISSN: 1618-3193
    Series Statement: Berichte zur Polar- und Meeresforschung 539
    Language: English
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  • 3
    Call number: AWI G3-08-0003
    Type of Medium: Monograph available for loan
    Pages: 246 S. : graph. Darst., Ill.
    Language: English
    Note: Potsdam, Univ., Habil.-Schr., 2007
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  • 4
    Call number: ZS-090(550) ; ZSP-168-550
    In: Berichte zur Polar- und Meeresforschung, 550
    Type of Medium: Series available for loan
    Pages: II, 289 Seiten , Illustrationen
    ISSN: 1618-3193
    Series Statement: Berichte zur Polar- und Meeresforschung 550
    Language: English
    Note: Enthaltener Beitrag: Russian-German Cooperation SYSTEM LAPTEV SEA: The Expedition COAST I / edited by Paul Overduin , Enthaltener Beitrag: The Expedition Lena 2005 / edited by Lutz Schirrmeister, Dirk Wagner, Mikhail N. Grigoriev and Dimitry Yu. Bolshiyanov , Enthaltener Beitrag: Russian-German cooperation Yakutsk - Potsdam: the expedition CENTRAL YAKUTIA 2005 / edited by Bernhard Diekmann, Sebastian Wetterich and Frank Kienast , Contents for "Russian-German Cooperation SYSTEM LAPTEV SEA: The Expedition COAST I" The Expedition COAST I 1. Background and Objectives 2. Logistics and Itinerary 3. Field Methods and Sample Recovery 3.1 Coring 3.2 Pore water analyses 3.3 Temperature profiles 4. Sample lists , Contents for "The Expedition Lena 2005" The Expedition Lena 2005 1. Introduction 2. Expedition itinerary and general logistics 3. Microbiological processes, trace gas fluxes and hydrobiology in permafrost ecosystems of the Lena Delta 3.1 Introduction 3.2 Dynamic of methane oxidising communities in permafrost soils 3.2.1 Introduction 3.2.2 Sampling procedure and field parameters 3.2.3 Pore water methane concentration 3.2.4 Sample processing and analyses 3.3 Microbial studies on nitrification from permafrost environments 3.3.1 Introduction 3.3.2 Field experiments: Impact of polygonal soil parameter on nitrification 3.4 Closed chamber measurements of carbon exchange between Arctic tundra and the atmosphere 3.5 Micrometeorological measurements of energy, water, and carbon exchange between Arctic tundra and the atmosphere 3.6 Energy and water budget of permafrost soils – long time meteorology and soil survey station on Samoylov Island 3.7 Isotopic Studies on the 13C-fractionation during CH4-production in polygonal and thermokarst lakes of the Lena Delta 3.7.1 Introduction and methods 3.7.2 Preliminary results and further plans 3.8 Hydrobiological investigations on Samoylov Island 3.8.1 Objectives 3.8.2 Research tasks 3.8.3 Material and methods 3.8.4 Preliminary results 3.9 References 4. Studies of periglacial landscape dynamics and surface characteristics studies in the western Lena Delta 4.1. Scientific background and objectives 4.2. Geological and geographical characteristics 4.3. Studies of oriented lakes and thermokarst depressions 4.3.1 Background 4.3.2 Study area 4.3.3 Topographical and geomorphological settings 4.3.3.1 Depressions 1, 2 and 3 4.3.3.2 Depression 4 4.3.3.3 Depression 5 4.3.4 Bathymetrical surveys 4.3.5 Field sampling 4.4. Characteristics and spectral properties of periglacial landforms 4.4.1 Introduction 4.4.2 Methods 4.4.3 First results 4.5. Studies of permafrost sequences for paleo-environmental reconstruction 4.5.1 The “Arga-Sands” on Turakh Island 4.5.1.1 Exposure Tur-1 4.5.1.2 Core Tur-2 4.5.1.3 Exposure T021 4.5.2 Sand sequences of Ebe Basyn Sise Island 4.5.2.1 Exposure Ebe-4 4.5.2.2 Exposure Ebe-2 4.5.2.3 Exposure Ebe-3 4.5.2.4 Exposure Ebe-5 4.5.3 Sand and Ice Complex sequences of Khardang Island 4.5.3.1 The sand deposits in the exposure Kha-1 4.5.3.2 The sequence Kha-2 4.5.3.3 Exposure Kha-3: large ice wedge and surrounding sediments 4.6 Subsurficial and bathymetrical Ground Penetrating Radar (GPR) Investigations 4.6.1 Subsurface mapping of the Arga sands stratigraphical unit 4.6.1.1 GPR survey configuration 4.6.1.2 Transects at exposure Ebe-4 4.6.1.3 Transects at exposure/borehole Tur-1/Tur-2 4.6.2 Arynskaya Channel bathymetry 4.7 Measuring of local weather and soil conditions by soil probe and weather station 4.8 Palaeontological collection of the “Mammoth” fauna from the museum of the Lena Delta Reserve 4.9 References 4.10 Appendices chapter 4 Appendix 4-1: Field spectrometry – description of measuring points and profiles (see chapter 4.4) Appendix 4-2: List of sediment samples (see chapter 4.5) Appendix 4-3: Modern soil profiles and surface samples Appendix 4-4: List of ground ice and surface water samples Appendix 4-5. Bone collection of the expedition LENA 2005 Appendix 4-6: Bone collection of Lena Delta Reserve Tiksi (see chapter 4.8) 5. Holocene ice wedges of the 1st Lena terrace 5.1 Introduction 5.2 Outcrops 5.2.1 Outcrop 1 5.2.2 Outcrop 2 5.2.3 Geocryolithology on Samoylov Island: General impressions 5.2.4 Outcrop 3 5.2.5 Outcrop 4 5.2.6 Outcrop 5 5.2.7 Outcrop 6 5.2.8 Outcrop 7 5.2.9 Outcrop 8 5.2.10 Outcrop 9 5.2.11 Outcrop 10 5.2.12 Pingo at Olenyekskaya Channel 5.2.13 Summary 5.3 Studies on recent cryogenesis on Samoylov Island 5.4 References 5.5 Appendices chapter 5 Appendix 5-1: Ice sample list Appendix 5-2: List of sediment samples and ice content measurement Appendix 5-3: List of water samples 6. Report of the hydrological work in the Lena River Delta in August 2005 6.1 Introduction 6.2 Methods 6.3 Preliminary results 6.4 Conclusion , Contents for "Russian-German cooperation Yakutsk - Potsdam: the expedition CENTRAL YAKUTIA 2005" Central Yakutia 2005 1. Expedition ‘Verkhoyansk 2005’ • Limnogeological studies at Lake Billyakh, Verkhoyansk Mountains, Yakutia 1.1 Introduction 1.2 Regional Setting of Lake Billyakh 1.3 Itinerary 1.4 Methods 1.4.1 Bathymetric measurements 1.4.2 Water sampling and measurements 1.4.3 Sediment coring 1.5 Results 1.5.1 Bathymetry 1.5.2 Water profiles 1.5.3 Sediment cores 1.6 Outlook 1.7 References 2 Limnological studies in Central and North-east Yakutia in summer 2005 2.1 Introduction 2.2 Study sites and lake types 2.3 Material and methods 2.4 Preliminary results 2.5 Outlook 2.6 References 2.7 Appendices Appendix 2-1: General characteristics and geographical position of the studied lakes in Central and North-east Yakutia Appendix 2-2: Some properties of the studied lakes in Central and North-east Yakutia, obtained during the fieldwork (unfilled table cells imply no data or information) Appendix 2-3: Sample list for further analyses on sediments, hydro-chemistry, water isotopes and aquatic organisms Appendix 2-4: Occurrence of zoobenthos organisms in the sampled Central-Yakutian lakes in July 2005 3. Vegetation studies in extremely continental regions of Yakutia 3.1 Introduction 3.2 Study areas and investigated vegetation types 3.3 Material and methods 3.4 Preliminary results 3.5 Appendix 3-1: Metadata of studied vegetation records
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  • 5
    Monograph available for loan
    Monograph available for loan
    Berlin [u.a.] : Walter de Gruyter
    Call number: 20-2/M 14.0104
    Description / Table of Contents: Over the last two decades, exploration of the deep subsurface biosphere has developed into a major research area. New findings constantly challenge our concepts of global biogeochemical cycles and the ultimate limits to life.In order to explain our observations from deep subsurface ecosystems it is necessary to develop truly interdisciplinary approaches, ranging from microbiology and geochemistry to physics and modeling.This book aims to bring together a wide variety of topics, covering the broad range of issues that are associated with deep biosphere exploration. Not only does the book present case studies of selected projects, but also treats questions arising from our current knowledge. Despite nearly two decades of research, there are still many boundaries to exploration caused by technical limitations and one section of the book is devoted to these technical challenges and the latest developments in this field. This volume will be of high interest to biologists, chemists and earth scientists all working on the deep biosphere.
    Type of Medium: Monograph available for loan
    Pages: xvii, 325 S. : farb. Ill+ graph. Darst.
    ISBN: 9783110300093
    Series Statement: Life in extreme environments 1
    Classification:
    D.8.
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  • 6
    Call number: ZSP-168-716
    In: Berichte zur Polar- und Meeresforschung, 716
    Type of Medium: Series available for loan
    Pages: 211 Seiten , Illustrationen
    ISSN: 1866-3192
    Series Statement: Berichte zur Polar- und Meeresforschung 716
    Language: English
    Note: Contents Characterization of soil organic matter of Arctic and Antarctic by 13- C NMR and electron spin resonance spectroscopy / Evgeny Abakumov Development of phosphorus forms in soil chronosequence of the Nordenskioldbreen glacier (Svalbard) / Adel Allaberdina, Václav Tejnecký Vertical snow structures from in-situ and remote sensing measurements / Stefanie Arndt, Nicolas Stoll, Stephan Paul, Christian Haas Phenology of Calanus glacialis – comparison between Arctic and Atlantic domains and its implications for reproductive success of little auks / Kaja Balazy, Emilia Trudnowska, Katarzyna Blachowiak-Samolyk Response of southern tundra ecosystem components on aerial pollution from gas pre-treatment centers in West Siberia / Pavel A. Barsukov Soil-ecological excursions to permafrost-affected areas in West Siberia for European scientists and students / Pavel A. Barsukov, S. Platonova, S. Gizhitskaya, E. Smolentseva, N. Lashchinskiy, A. Babenko, I. Lyubechanskiy, O. Saprykin, O.Rusalimova Christian Siewert Freezing and hungry? Hydrocarbon degrading microbial communities in Barents Sea sediments around Svalbard / Bartholomäus Sven, Nontje Straaten, Daniela Zoch, Martin Krüger Biological soil crust algae in the polar regions – biodiversity, genetic diversity and ecosystem resilience under global change scenarios / Burkhard Becker, Burkhard Büdel and Ulf Karsten UDASH - Unified Database for Arctic and Subarctic Hydrography / Axel Behrendt, Hiroshi Sumata, Benjamin Rabe, Torsten Kanzow and Ursula Schauer Compound-specific radiocarbon constraints on Antarctic sediment chronologies / Sonja Berg, Sandra Jivcov, Janet Rethemeyer Environmental conditions in terrestrial East Antarctica during the last glacial - new evidence from mumiyo deposits / Sonja Berg, Martin Melles, Wolf-Dieter Hermichen, Janet Rethemeyer, Gerhard Kuhn Collection-based diatom research: collection imaging to biogeography and microevolution in the Southern Ocean / Bánk Beszteri, Stefan Pinkernell, Michael Kloster, Ute Postel, Gerhard Kauer, Uwe John, Klaus Valentin, Gernot Glöckner In vivo observations of OWA induced pH changes in the brain of polar cod Boreogadus saida / Christian Bock, Felizitas C. Wermter, Bastian Maus, Hans-O. Pörtner, Wolfgang Dreher A journey into the Triassic polar forests of Antarctica / Benjamin Bomfleur Long-term time-series of Arctic BrO derived from UV-VIS satellite remote sensing / lias Bougoudis, Anne-Marlene Blechschmidt, Andreas Richter, Sora Seo, John P. Burrows The effect of climate change on the carbon balance in microalgae / Deborah Bozzato, Torsten Jakob, Christian Wilhelm Species composition and abundance of the shallow water fish community of Kongsfjorden, Svalbard / Markus Brand, Philipp Fischer Decadal changes in a breeding population of southern giant petrels on King George Island, Antarctic, in response to human activities / Christina Braun, Jan Esefeld, Hans-Ulrich Peter Geodetic GNSS measurements to investigate the recent crustal deformation at the Antarctic Peninsula and in the Amundsen Sea Embayment, West Antarctica / Peter Busch, Mirko Scheinert, Christoph Knöfel, Lutz Eberlein, Martin Horwath, Ludwig Schröder, Andreas Groh Parameterization of snow BRDF measurements in Antarctica / T. Carlsen, G. Birnbaum, A. Ehrlich, M. Schäfer, and M. Wendisch Airborne and in situ ground-based measurements of surface albedo, bidirectional reflectivity, and snow properties on the Antarctic plateau / T. Carlsen, M. Belke Brea, G. Birnbaum, A. Ehrlich, J. Freitag, G. Heygster, L. Istomina, S. Kipfstuhl, A. Orsi, M. Schäfer, and M. Wendisch Retreats of ice sheet and ice shelf driven by warm water incursions in the Ross Sea since the Last Glacial Maximum / Zhihua Chen, Mengshan Ju, Shulan Ge, Zheng Tang, Yuanhui Huang, Renjie Zhao, Ralf Tiedemann, Lester Lembke-Jene Influence of breeze circulation on local wind climatology in Svalbard fjords / Małgorzata Cisek, Przemysław Makuch, Tomasz Petelski, Jacek Piskozub Life strategies on photobiology and metabolite profile of genetic indentical photobionts of two different lichen species / Nadine Determeyer-Wiedmann, Sieglinde Ott Land-Ocean Interactions in the late glacial Bering Sea / B. Diekmann, R. Wang, H. Kühn, R. Gersonde, R. Tiedemann, G. Kuhn Does environmental change affect polar microbial communities? / Daniel R. Dietrich Rapid glacial isostatic uplift in Patagonia: Interplay of enhanced ice mass loss and slab window tectonics / R. Dietrich, A. Richter, E. Ivins, H. Lange, L. Mendoza, L. Schröder, J.L. Hormaechea, G. Casassa, E. Marderwald, M. Fritsche, R. Perdomo, M. Horwath Phylogenomics of the longitarsal Colossendeidae: the evolution of a diverse Antarctic sea spider radiation / Lars Dietz, Jana S. Dömel, Christoph Mayer, Florian Leese Revealing the evolutionary history of Southern Ocean sea spiders using genome-wide SNP data / Jana S. Dömel, Till-Hendrik Macher, Lars Dietz, Christoph Mayer, Roland R. Melzer and Florian Leese Geothermal heat flux derived from airborne magnetic grids and measured temperature gradients in the Amundsen Sea sector of West Antarctica / Ricarda Dziadek, Karsten Gohl, Fausto Ferraccioli, Norbert Kaul, Cornelia Spiegel Sea spray aerosol fluxes in the area of the Spitsbergen Shelf and the Greenland Sea / K. Dziembor, T. Petelski, P. Markuszewski, T. Zieliński, P. Makuch, I. Wróbel More than two decades of geodetic GNSS measurements in Antarctica, Greenland and Patagonia – a technology review / Lutz Eberlein, Mirko Scheinert, Peter Busch, Christoph Knöfel, Andreas Richter Analysing the flow velocity of major outlet glaciers in North Greenland using Landsat data / Benjamin Ebermann, Ralf Rosenau, Mirko Scheinert, Martin Horwath Partitioning growing season net ecosystem exchange of CO2 into photosynthesis, autotrophic and heterotrophic respiration in the Siberian tundra / Tim Eckhardt, Christian Knoblauch, Lars Kutzbach, Gillian Simpson, Eva-Maria Pfeiffer Meteorological collaboration in the Arctic / Johanna Ekman Meteorological aspects of S.A. Andrée’s attempt to reach the North Pole by balloon in 1897 / Dieter Etling Geodetic mass balance on South Georgia glaciers / David Farias-Barahona, Christian Sommer, Thorsten Seehaus, Philipp Malz, Gino Casassa, Matthias H. Braun Frozen-Ground Cartoons: An international collaboration between artists and permafrost scientists / Michael Fritz, Frédéric Bouchard, Bethany Deshpande, Julie Malenfant-Lepage, Alexandre Nieuwendam, Michel Paquette, Ashley Rudy, Matthias Siewert, Audrey Veillette, Stefanie Weege, Jon Harbor, Otto Habeck, Ylva Sjöberg The Akademii Nauk ice core and solar activity / Diedrich Fritzsche, Luisa von Albedyll, Silke Merchel, Thomas Opel, Georg Rugel, Andreas Scharf Walther Bruns, Gründer der „Aeroarctic“ – ein vergessener Pionier der Deutschen Polarforschung / Diedrich Fritzsche Warming and reduction of precipitations affect the microbiome of recently deglaciated soils in the Swiss Alps / Aline Frossard, Johanna Donhauser, Pascal Niklaus, Thomas Rime, Beat Frey The ice-free topography of Svalbard / Johannes J. Fürst, Francisco Navarro, Fabien Gillet-Chaulet, Geir Moholdt, Xavier Fettweis, Charlotte Lang, Thorsten Seehaus, Matthias H. Braun, Douglas I. Benn, Toby J. Benham, Julian A. Dowdeswell, Mariusz Grabiec, Jack Kohler, Katrin Lindbäck, Rickard Pettersson, Heidi Sevestre Scientific Drilling in Antarctica? Coming to a new drilling proposal / Christoph Gaedicke, Gerhard Kuhn, Olaf Eisen, Andreas Läufer, Emma Smith, Nikola Koglin, Boris Biskaborn, Dieter Franke, Ralf Tiedemann German permanent research facilities in Antarctica - a 40 years record / Hartwig Gernandt Pre-glacial and glacial shelf evolution from seismic and seabed drill records of the Amundsen Sea, West Antarctica / Karsten Gohl, Gabriele Uenzelmann-Neben, Robert Larter, Johann Klages, Claus-Dieter Hillenbrand, Torsten Bickert, Steve Bohaty, Ulrich Salzmann, Thomas Frederichs, Catalina Gebhardt, Katharina Hochmuth and Expedition PS104 Science Party The Turnove
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  • 7
    Call number: ZS-090(489) ; ZSP-168-489
    In: Berichte zur Polar- und Meeresforschung, 489
    Type of Medium: Series available for loan
    Pages: 231 Seiten , Illustrationen
    ISSN: 1618-3193
    Series Statement: Berichte zur Polar- und Meeresforschung 489
    Language: English
    Note: Enthaltener Beitrag: Russian-German cooperation System Laptev Sea : the expedition Lena-Anabar 2003 / edited by Lutz Schirrmeister, Mikhail N. Grigoriev, Lars Kutzbach, Dirk Wagner and Dmitry Yu. Bolshiyanov , Enthaltener Beitrag: The Russian-German TRANSDRIFT IX Expedition of RV "Ivan Kireyev" 2003 / edited by Carolyn Wegner, Jens Hölemann and Vladimir Churun , Contents for "Russian-German cooperation System Laptev Sea : the expedition Lena-Anabar 2003" 1 Introduction 2 Expedition itinerary and general logistics 3 Ecological studies on permafrost soils and landscapes of the central Lena Delta6 3.1 Aims and study area 3.2 Energy and water budget of permafrost soils – long time soil survey station on Samoylov Island 3.3 Micrometeorological measurements of energy, water, and carbon exchange between Arctic tundra and the atmosphere 3.3.1 Introduction 3.3.2 Experimental set-up 3.3.3 The observation period 2003 3.3.3.1 Wind characteristics 3.3.3.2 Meteorological conditions 3.3.3.3 Turbulent fluxes 3.4 Microbial process studies on methane fluxes from permafrost environments 3.4.1 Introduction 3.4.2 Methane emission and microbial methane production 3.4.2.1 Methods and field experiments 3.4.2.2 Preliminary results 3.4.3 Process studies on methane oxidation 3.4.3.1 Introduction and objectives 3.4.3.2 Methods and field experiments 3.4.3.3 Preliminary results 3.4.4 Further investigations 3.5 Studies on recent cryogenesis 3.6 Seasonal progression of active-layer thickness dependent on microrelief 3.6.1 Introduction 3.6.2 Methods 3.6.3 First results 3.7 Air photography and surface classification of Samoylov Island 3.8 Hydrobiological investigations in the Lena Delta in summer 2003 3.8.1 Objectives 3.8.2 Research tasks 3.8.3 Material and methods 3.8.4 Preliminary results 3.9 Appendices Appendix 3-1 Collected variables determined by direct measurements within the micrometeorological campaign Samoylov, 2003 Appendix 3-2 Variables derived from calculations within the micrometeorological campaign Samoylov, 2003 Appendix 3-3 Constants required in calculations Appendix 3-4 List of samples for methane emission and microbial methane production studies Appendix 3-5 List of soil samples for methane oxidation studies 3.10 References 4 Periglacial studies around Cape Mamontov Klyk 4.1 Introduction 4.2 Geological and geographical background 4.3 Geomorphologic route along the Urasalakh River 4.3.1 Structure of Quaternary deposits along the Urasalakh River valley 4.3.2 Geomorphologic structure of the valley 4.3.3 Studies of lakes 4.4 Multi-sensor optical remote sensing of periglacial tundra landscapes 4.4.1 Research aim 4.4.2 Satellite data 4.4.3 General geomorphology in the Lena-Anabar interfluve 4.4.4 Geomorphology in the investigation area near Cape Mamontov Klyk 4.4.5 Field data 4.4.6 Tachymetric survey of periglacial surface features 4.4.7 Characterisation in situ surface properties with a soil probe at a typical elevated Edoma plain 4.5 Methane-related studies on recent tundra soils 4.5.1 Introduction and objectives 4.5.2 Methods 4.5.3 First results 4.6 The coastal section of Cape Mamontov Klyk 4.6.1 General profile 4.6.2 Cryolithological studies of permafrost deposits 4.6.2.1 The first composite profile 4.6.2.2 The second composite profile 4.6.2.3 Additional sampled subprofiles 4.6.3 Ice wedges of Cape Mamontov Klyk 4.6.3.1 Introduction 4.6.3.2 The ice wedges in the lower sands (Unit A) and in the sand-peat-complex (Unit B) 4.6.3.3 Ice wedges of the Late Pleistocene Ice Complex (Unit C) and of Holocene deposits (Unit D) 4.6.3.4 Ground ice of unknown origin 4.6.3.5 Ice wedge section west of the Nuchcha Dzhiele River mouth 4.6.3.6 General interpretation of the sampled profile 4.6.4 Geomicrobiological studies 4.6.4.1Introduction and objectives 4.6.4.2 Methods 4.6.4.3 First results: Methane content of permafrost samples 4.6.5 Paleontological studies 4.7 Studies of coastal dynamics and sub sea permafrost 4.7.1 Preliminary results of sub-sea permafrost drilling in the near-shore zone (spring 2003) 4.7.1.1 Introduction and background 4.7.1.2 Methods and preliminary results 4.7.1.3 Further investigations 4.7.2 Measurements of the coast relief in the area of Cape Mamontov Klyk and ice and sediment sampling 4.7.2.1 Introduction 4.7.2.2 Methods 4.7.2.3 Preliminary results 4.7.2.4 Further investigations 4.7.3 Shore face profiles in the area of Cape Mamontov Klyk: echo sounding, seawater and sea bottom deposits sampling 4.7.3.1 Introduction 4.7.3.2 Methods 4.7.3.3 Preliminary results 4.7.3.4 Further investigations 4.8 References 4.9 Appendices Appendix 4-1. Surface parameters for the studied geolocated sites around Cape Mamontov Klyk Appendix 4-2. Active layer data of the geo-located sites Appendix 4-3. List of soil samples (active layer); collected in the coastal lowland Appendix 4-4. List of permafrost sediment and paleosol samples for microbiological, molecular biological and biochemical analyses Appendix 4-5. List of sediment samples Appendix 4-6. List of ice and water samples Appendix 4-7. Collection of bone samples , Content for "The Russian-German TRANSDRIFT IX Expedition of RV "Ivan Kireyev" 2003" 1. Process Studies on Permafrost Dynamics in the Laptev Sea – An Introduction 2. The TRANSDRIFT IX Expedition: Process studies on submarine permafrost dynamics in the Laptev Sea 3. Motivation: Deployment of two seafloor observatories 4. Recent stability factors of submarine permafrost 4.1 Working program 4.2 Preliminary results 5. Hydrochemical structure of the water column 5.1 Working program 6. Diversity of nitrifying bacteria in submarine permafrost 6.1 Working program 6.2 Preliminary Results 7. Appendix: Station list of the TRANSDRIFT IX (IK03) expedition 8. References
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  • 8
    Call number: AWI G3-18-91503
    In: Hamburger bodenkundliche Arbeiten, Band 40
    Type of Medium: Series available for loan
    Pages: XVIII, 153 S , Ill., graph. Darst , 21 cm
    ISSN: 0724-6382
    Series Statement: Hamburger bodenkundliche Arbeiten 40
    Language: German
    Note: Zugl.: Hamburg, Univ., FB Geowiss., Diss., 1998 , Inhaltsverzeichnis: I Zusammenfassung. - II Summary. - III Abbildungsverzeichnis. - IV Tabellenverzeichnis. - V Abkürzungsverzeichnis. - VI Glossar. - 1 Einleitung und Fragestellung. - 2 Grundlagen. - 2.1 Methan in der Natur. - 2.2 Methan als klimarelevantes Spurengas. - 2.3 Der Methankreislauf. - 2.4 Methanogene Bakterien. - 2.5 Anaerober Abbau organischer Substanz. - 2.6 Isotopieeffekte beim mikrobiellen anaeroben Abbau organischer Substanz. - 2.7 Bedeutung terrestrischer Ökosysteme für die Methanfreisetzung. - 3 Charakterisierung der Untersuchungsgebiete. - 3.1 Asseler Sand (Assel, Norddeutschland). - 3.1.1 Lage und naturräumliche Gliederung. - 3.1.2 Landschaftsgenese. - 3.1.3 Klima. - 3.1.4 Hydrologie. - 3.1.5 Vegetation und Nutzung. - 3.1.6 Böden des Untersuchungsgebietes. - 3.2 Tai-Hu-Tiefland (Suzhou, Ostchina). - 3.2.1 Lage. - 3.2.2 Landschaftsgenese. - 3.2.3 Klima. - 3.2.4 Vegetation und Nutzung. - 3.2.5 Böden des Untersuchungsgebietes. - 4 Material und Methoden. - 4.1 Bodenprofilaufnahme und Probenentnahme. - 4.2 Behandlung und Aufarbeitung des Probenmaterials. - 4.3 Bodenphysikalische Analysen. - 4.3.1 Bestimmung der Porengrößenverteilung. - 4.3.2 Bestimmung der Korngrößenverteilung. - 4.4 Bodenchemische Analysen. - 4.4.1 Kohlenstoff- und Stickstoff-Analytik. - 4.4.2 δ13C-Bestimmung. - 4.4.3 pH-Wert- und Redoxpotential-Messung. - 4.5 Bestimmung von Methanbildungsraten. - 4.5.1 Aktuelle Methanbildungsaktivität. - 4.5.2 Potentielle Methanbildungsaktivität. - 4.5.3 Temperaturoptimum der Methanbildung. - 4.5.4 Methanbildungsaktivität in Gegenwart von Sauerstoff. - 4.5.5 Methanbildungsaktivität in Abhängigkeit vom Wassergehalt. - 4.5.6 Gasanalytik (CH4, O2). - 4.6 Mikrobiologische Untersuchungen. - 4.6.1 Nährmedien. - 4.6.2 Zellzahlbestimmung. - 4.6.2.1 MPN-Methode. - 4.6.2.2 Koch'sches Plattengußverfahren. - 4.6.3 Isolierung von methanogenen Bakterien. - 4.6.3.1 Anreicherungskultur. - 4.6.3.2 Agar-Verdünnungsreihe. - 4.6.3.3 Reinheitstest. - 4.6.3.4 Kulturführung. - 4.6.4 Charakterisierung der Isolate. - 4.6.4.1 Transmissionselektronenmikroskopie. - 4.6.4.2 Substratspektrum. - 4.6.4.3 Temperaturoptimum. - 4.6.4.4 Salz- und pH-Optimum. - 4.6.4.5 16S-rRNA-Sequenzierung. - 4.7 Fraktionierung der organischen Bodensubstanz. - 4.7.1 DOC-Extraktion. - 4.7.2 Dichtefraktionierung. - 4.8 Statistische Analysen. - 5 Ergebnisse. - 5.1 Bodenmikrobiologische Standortcharakterisierung. - 5.1.1 Marschboden (Asseler Sand). - 5.1.2 Reisboden (Suzhou). - 5.2 Temperaturcharakteristika der methanogenen Flora. - 5.2.1 Temperaturoptimum. - 5.2.2 Zellzahlen methanogener Bakterien in Abhängigkeit von Temperatur und Substrat. - 5.2.3 Einfluß verschiedener Substrate auf die Methanbildung. - 5.3 Isolierung und Charakterisierung von methanogenen Bakterien. - 5.3.1 Grundlagen. - 5.3.2 Morphologische Merkmale. - 5.3.3 Physiologische Merkmale. - 5.3.4 Phylogenetische Auswertung der 16S-rRNA-Sequenzen methanogener Bakterien. - 5.4 Methanbildung in Gegenwart von Sauerstoff. - 5.4.1 Hemmung der Methanoxidation durch Acetylen. - 5.4.2 Einfluß der Begleitflora. - 5.4.3 Einfluß der Bodenart. - 5.4.4 Methanbildung bei definierten Wassergehalten. - 5.5 Charakterisierung der organischen Bodensubstanz in Hinblick auf die CH4-Bildung. - 5.5.1 Marschboden (Asseler Sand). - 5.5.1.1 Kohlenstoff- und Stickstoff-Parameter. - 5.5.1.2 Isotopenanalytische Untersuchung der organischen Bodensubstanz. - 5.5.1.3 Charakterisierung der organischen Substanz mittels Dichtefraktionierung. - 5.5.2 Reisboden (Suzhou). - 5.5.2.1 Kohlenstoff- und Stickstoff-Parameter. - 5.5.2.2 Isotopenanalytische Untersuchungen der organischen Bodensubstanz. - 5.5.2.3 Charakterisierung der organischen Substanz mittels Dichtefraktionierung. - 5.5.2.4 Methanbildungspotentiale der Dichtefraktionen. - 6 Diskussion. - 6.1 Einfluß der Temperatur auf die Methanbildung. - 6.2 Einfluß von Sauerstoff auf die Aktivität methanogener Bakterien. - 6.3 Bedeutung der organischen Bodensubstanz für die Methanogenese. - 6.4 Wechselwirkungen der untersuchten Faktoren in hydromorphen Böden und ihre Bedeutung in Hinblick auf globale Klimaveränderungen. - 7 Literaturverzeichnis. - 8 Anhang. - Danksagung.
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  • 9
    Call number: AWI Bio-22-94766
    Description / Table of Contents: The arctic-boreal treeline is a transition zone from taiga to tundra covering a vast area in Siberia. It often features large environmental gradients and reacts sensitively to changes in the environment. For example, the expansion of shrubs and a northward movement of the treeline are observable in Siberia as a response to the warming climate. The changes in vegetation across the treeline are known to influence the water chemistry in the lakes. This causes further alteration to the composition and diversity of sensitive aquatic organisms such as diatoms and macrophytes. Despite the rising awareness of the complex climate-feedback mechanisms of terrestrial plants, the understanding of their assembly rules and about responses of aquatic biomes in the surrounding treeline lakes is still limited. The goal of this thesis is to examine the previous and present biodiversity of terrestrial and freshwater biomes from the Siberian treeline ecotone, as well as their reactions to environmental changes. In particular, this thesis attempts to ...
    Type of Medium: Dissertations
    Pages: 132 Blätter , Illustrationen, Diagramme, Karten
    Language: English
    Note: Dissertation, Universität Potsdam, 2021 , Contents List of abbreviations Acknowledgements Summary Zusammenfassung 1 Scientific background 1.1 Motivation 1.2 The arctic-boreal ecotone in time and space 1.2.1 Terrestrial plants composition and biodiversity 1.2.2. Lake macrophytes and diatoms 1.3 Sedimentary DNA metabarcoding as an ecologicalproxy 1.4 Study area 1.5 Objectives of the thesis 1.6 Methods 1.7 Thesis organizations 1.7.1 Manuscripts and chapters 1.7.2 Non-finalized research 1.7.2 Author contributions 2 Manuscript I: Genetic and morphological diatom composition in surface sediments from glacial and thermokarst lakes in the Siberian Arctic 2.1 Abstract 2.2 Introduction 2.3 Materials and methods 2.3.1 Sampling and collection of environmental data 2.3.2 Diatom genetic assessment 2.3.3 Raw sequence processing and taxonomic assignment 2.3.4 Morphological diatom identification 2.3.5 Statistical analyses 2.4 Results 2.4.1 Genetic-based diatom composition, diversityand diatom-environment relationship 2.4.2 Morphological-based diatom composition, diversity and diatom-environment relationship 2.4.3 Comparison of spatial diatom patterns obtained from the genetic and morphological approaches 2.5 Discussion 2.5.1 Genetic and morphological diatom composition and diversity 2.5.2 Diatom composition is affected by lake type and lake water parameters 2.6 Conclusions 2.7 Acknowledgments 3 Manuscript II: Plant sedimentary ancient DNA from Far East Russia covering the last 28 ka reveals different assembly rules in cold and warm climates 3.1 Abstract 3.2 Introduction 3.3 Methods 3.3.1 Study area 3.3.2 Sampling and dating 3.3.3 Genetic laboratory works 3.3.4 Processing the sequence data 3.3.5 Statistical analyses 3.4 Results 3.4.1 Overview of the sequencing data and taxonomic composition 3.4.2 Taxonomic alpha and beta diversity 3.4.3 Phylogenetic alpha and beta diversity 3.4.4 Relationship between taxonomic composition and phylogenetic diversity 3.5 Discussion 3.5.1 Vegetation history revealed by sedaDNA 3.5.2 Patterns oftaxonomic alpha diversity and their relationship to community composition 3.5.3 Relationship between richness and phylogenetic alpha and beta diversity 4 Manuscript III: Sedimentary DNA identifies modem and past macrophyte diversity and its environmental drivers in high latitude and altitude lakes in Siberia and China 4.1 Abstract 4.2 Introduction 4.3 Materialsand Methods 4.3.1 Field sampling of surface and core samples 4.3.2 Environmental data 4.3.3 Molecular genetic laboratory work 4.3.4 Bioinformatic analyses 4.3.5 Statistical analyses 4.4 Results 4.4.1 Macrophyte diversity in surface sediments inferred from sedDNA 4.4.2 Relationship of modem macrophyte richness and environmental variables 4.4.3 The relationship between modem macrophyte community and environmental variables 4.4.4 Past macrophyte richness and composition inferred from sedaDNA 4.4.5 Past macrophyte compositional changes and its environmental drivers 4.5 Discussion 4.5.1 Retrieval of aquatic plant diversity using the tmL P6 loop plant DNA metabarcode 4.5.2 Modem macrophyte diversity and its relation to environmental factors 4.5.3 Temporal macrophyte diversity as an indicator for past environmental change 4.6 Conclusion 5 Synopsis 5.1 Potential and limitations of sedimentary DNA in the applied study 5.1.1 Sedimentary DNA is a powerful proxy 5.1.2 Limitations in sedimentary DNA 5.2 Spatial patterns of vegetation, macrophytes and diatoms 5.2.1 Composition and diversity of vegetation 5.2.2 Composition and diversity of macrophytes 5.2.3 Composition and diversity of diatoms 5.3 Temporal patterns of vegetation, macrophytes and diatoms 5.3.1 Composition and diversity of vegetation 5.3.2 Composition and diversity of macrophytes 5.3.3 Composition and diversity of diatoms 5.4 Outlooks and conclusions Appendices Appendix 1 for Manuscript I Appendix 2 for Manuscript II Appendix 3 for Manuscript III References
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  • 10
    Call number: AWI Bio-20-93990
    Description / Table of Contents: Assumed comparable environmental conditions of early Mars and early Earth in 3.7 Ga ago – at a time when first fossil records of life on Earth could be found – suggest the possibility of life emerging on both planets in parallel. As conditions changed, the hypothetical life on Mars either became extinct or was able to adapt and might still exist in biological niches. The controversial discussed detection of methane on Mars led to the assumption, that it must have a recent origin – either abiotic through active volcanism or chemical processes, or through biogenic production. Spatial and seasonal variations in the detected methane concentrations and correlations between the presence of water vapor and geological features such as subsurface hydrogen, which are occurring together with locally increased detected concentrations of methane, gave fuel to the hypothesis of a possible biological source of the methane on Mars. Therefore the phylogenetically old methanogenic archaea, which have evolved under early Earth conditions, are often used as model-organisms in astrobiological studies to investigate the potential of life to exist in possible extraterrestrial habitats on our neighboring planet. In this thesis methanogenic archaea originating from two extreme environments on Earth were investigated to test their ability to be active under simulated Mars analog conditions. These extreme environments – the Siberian permafrost-affected soil and the chemoautotrophically based terrestrial ecosystem of Movile cave, Romania – are regarded as analogs for possible Martian (subsurface) habitats. Two novel species of methanogenic archaea isolated from these environments were described within the frame of this thesis. It could be shown that concentrations up to 1 wt% of Mars regolith analogs added to the growth media had a positive influence on the methane production rates of the tested methanogenic archaea, whereas higher concentrations resulted in decreasing rates. Nevertheless it was possible for the organisms to metabolize when incubated on water-saturated soil matrixes made of Mars regolith analogs without any additional nutrients. Long-term desiccation resistance of more than 400 days was proven with reincubation and indirect counting of viable cells through a combined treatment with propidium monoazide (to inactivate DNA of destroyed cells) and quantitative PCR. Phyllosilicate rich regolith analogs seem to be the best soil mixtures for the tested methanogenic archaea to be active under Mars analog conditions. Furthermore, in a simulation chamber experiment the activity of the permafrost methanogen strain Methanosarcina soligelidi SMA-21 under Mars subsurface analog conditions could be proven. Through real-time wavelength modulation spectroscopy measurements the increase in the methane concentration at temperatures down to -5 °C could be detected. The results presented in this thesis contribute to the understanding of the activity potential of methanogenic archaea under Mars analog conditions and therefore provide insights to the possible habitability of present-day Mars (near) subsurface environments. Thus, it contributes also to the data interpretation of future life detection missions on that planet. For example the ExoMars mission of the European Space Agency (ESA) and Roscosmos which is planned to be launched in 2018 and is aiming to drill in the Martian subsurface
    Type of Medium: Dissertations
    Pages: VI, 108 Blätter , Illustrationen
    Language: English
    Note: Dissertation, Universität Potsdam, 2015 , Table of contents Preface Table of contents Summary Zusammenfassung 1. Introduction 1.1. Environmental conditions on past and present Mars 1.2. Detection of methane on Mars 1.3. Methanogenic archaea 1.4. Description of study sites 1.5. Aims and approaches 1.6. Overview of the publications 2. Publication I: Methanosarcina soligelidi sp. nov., a desiccationandfreeze-thaw-resistant methanogenic archaeon from a Siberianpermafrost-affected soil 3. Publication II: Methanobacterium movilense sp. nov.,ahydrogenotrophic, secondary-alcohol-utilizing methanogen fromthe anoxic sediment of a subsurface lake 4. Publication III: Influence of Martian Regolith Analogs on the activityand growth of methanogenic archaea,with special regard to long-term desiccation 5. Publication IV: Laser spectroscopic real time measurements ofmethanogenic activity under simulated Martian subsurface conditions 6. Synthesis and Conclusion 6.1. Synthesis 6.2. Conclusion and future perspectives 7. References 8. Acknowledgments
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