Prof. Dr. Bernd Zolitschka

Position: Professor/in
Forschungsbereich: Geomorphologie und Polarforschung
Raum: FVG M2120
Telefon: 0421-218 67150
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Gremien

  • Koordinator des M.Sc.-Programms "Physical Geography: Environmental History" (seit 2015)
  • Dekan des Fachbereichs 08 (2013-2017)
  • Prodekan des Fachbereichs 08 (2009-2013)
  • Vorsitzender des Promotionsausschusses Dr. rer. nat. im Fachbereich 8 (seit 2003)
  • Sprecher des Instituts für Geographie (2001-2009)
  • Vorsitzender der Studienkommission Geographie (2001-2009)
  • Mitglied des Fachbereichsrates 08 (XI: 2001-2003)

Vita

  • seit 2000: Professor für Physische Geographie mit dem Schwerpunkt Geomorphologie und Polarforschung an der Universität Bremen
  • 1997: Habilitation an der Universität Potsdam mit dem Thema „Paläoklimatische Bedeutung laminierter Seesedimente“
  • 1994–2000: Wissenschaftlicher Mitarbeiter am GeoForschungsZentrum Potsdam
  • 1992–1994: Wissenschaftlicher Mitarbeiter an der Universität Trier
  • 1991–1992: Visiting Professor am Climate Systems Research Center, Department of Geosciences, University of Massachusetts, Amherst, USA
  • 1990–1991: Wissenschaftlicher Mitarbeiter an der Universität Trier
  • 1990: Promotion zum Dr. rer. nat. an der Universität Trier mit dem Thema "Spätquartäre jahreszeitlich geschichtete Seesedimente ausgewählter Eifelmaare"
  • 1986-1990: Wissenschaftlicher Mitarbeiter und Stipendiat an der Universität Trier
  • 1980-1986: Diplomstudium der Angewandten Physischen Geographie mit den Fächern Geologie, Bodenkunde und Geobotanik an der Universität Trier

Forschungsschwerpunkte

  • Natürliche und anthropogene Kontrollmechanismen von geomorphologischen und sedimentologischen Prozessen
  • Quartäre Paläoklimatologie
  • Potenzial von jahreszeitlich geschichteten Seesedimenten zur Datierung und hoch auflösenden Paläo-Umweltrekonstruktion

Aktuelle und ehemalige Doktorandinnen und Doktoranden als Erstbetreuer

  • Torsten Haberzettl
  • Dirk Enters
  • Britta Lüder
  • Philipp Bluszcz
  • Stephanie Kastner
  • Annette Hahn
  • Henrike Baumgarten
  • Jörn Profe

Mitgliedschaften

Forschungsprojekte

Aktuelle Forschungsprojekte

Aktuelle Publikationen (2016-2018)

    Submitted

    • Hockun, K., Sachse, D., Mollenhauer, G., Hefter, J., Hahn, A., Ohlendorf, C., Zolitschka, B., Mayr, C., Schefuß, E.: Major ecosystem changes in Laguna Potrok Aike during the past 51ka recorded by compound-specific δD and δ13C of n-alkane lipids. Quaternary Research (under revision).
    • Kinder, M., Tylmann, W., Bubak, I., Fiłoc, M., Gąsiorowski, M., Kupryjanowicz, M., Mayr, C., Sauer, L., Voellering, U., Zolitschka, B.: Human impact during the past 8,200 years: multi-proxy record of annually laminated sediments from Lake Szurpiły, northeastern Poland. The Holocene (submitted).
    • Menke, V., Ehrmann, W., Milker, Y., Brzelinski, S., Möbius, J., Mikolajewicz, U., Zolitschka, B., Zonneveld, K., Emeis, K. C., Schmiedl, G.: Combined North Atlantic and anthropogenic forcing of changes in the marine environments in the Gulf of Taranto (Italy) during the last millennium, Climate of the Past Discussion. https://doi.org/10.5194/cp-2017-139 (revised version submitted).
    • Profe, J., Neumann, L., Novothny, Á., Barta, G., Rolf, C., Frechen, M., Ohlendorf, C., Zolitschka, B.: Persistent arid climatic conditions during the last glacial-/interglacial cycle deduced from geochemical data of the loess-paleosol sequence at Süttő (Hungary). Quaternary Science Reviews (revised manuscript submitted)
    • Profe, J., Wacha, L., Frechen, M., Ohlendorf, C., Zolitschka, B.: XRF scanning of discrete samples – a chemostratigraphic approach exemplified for loess-paleosol sequences from the Island of Susak, Croatia. Quaternary International (revised manuscript submitted)
    • Zolitschka, B., Fey, M., Janssen, S., Maidana, N.I., Mayr, C., Wulf, S., Haberzettl, T., Corbella, H., Lücke, A., Ohlendorf, C., Schäbitz, F.: Southern Hemispheric Westerlies control sedimentary processes of Laguna Azul (south-eastern Patagonia, Argentina). The Holocene (submitted).

    Published

    • Eichhorn, L., Pirrung, M., Büchel, G., Zolitschka, B., 2017. Pleniglacial sedimentation process reconstruction on laminated lacustrine sediments from lava-dammed Paleolake Alf, West Eifel Volcanic Field (Germany). Quaternary Science Reviews 172: 83-95. https://doi.org/10.1016/j.quascirev.2017.07.009
    • Kliem, P., Baumgarten, H., C. Gebhardt, A. Hahn, C. Ohlendorf, B. Zolitschka, 2017. Periodic 1.5 ka climate variations during MIS 2 in the belt of Southern Hemispheric Westerlies. Quaternary Research 88: 110-120. https://doi.org/10.1017/qua.2017.13
    • Mayr, C., Matzke-Karasz, R., Stojakowits, P., Lowick, S.E., Zolitschka, B., Heigl, T., Mollath, R., Theuerkauf, M., Weckend, M.-O., Bäumler, R., Gregor, H.-J., 2017. Palaeoenvironments during MIS 3 and MIS 2 inferred from lacustrine intercalations in the loess-palaeosol sequence at Bobingen (southern Germany). E&G Quaternary Science Journal 66: 73-89. https://doi.org/10.5194/egqsj-66-73-2017
    • Smidt, C., Wolters, S., Zolitschka, B., 2017. Pingo-Ruinen: Nachweis und flächenhafte Verbreitung periglazialer Relikte südlich von Friedeburg (Ostfriesland). Nachrichten des Marschenrates zur Förderung der Forschung im Küstengebiet der Nordsee 54: 39-50.
    • Hockun, K., G. Mollenhauer, S.L. Ho, J. Hefter, C. Ohlendorf, B. Zolitschka, C. Mayr, A. Lücke, E. Schefuß, 2016. Using distributions and compound-specific isotopes of n-alkanes to disentangle organic matter contributions to sediments of Laguna Potrok Aike, Argentina. Organic Geochemistry 102: 110-119. http://dx.doi.org/10.1016/j.orggeochem.2016.10.001
    • Jenny, J.-P., A. Normandeau, P. Francus, Z.E. Taranu, I. Gregory-Eaves, F. Lapointe, J. Jautzy, A.E.K. Ojala, J.-M. Dorioz, A. Schimmelmann, B. Zolitschka, 2016. Urban point sources of nutrients were the leading cause for the historical spread of hypoxia across European lakes. Proceedings of the National Academy of Sciences (PNAS) 113: 12655-12660. http://dx.doi.org/10.1073/pnas.1605480113
    • Jenny, J.-P., P. Francus, A. Normandeau, F. Lapointe, M.-E. Perga, A.E.K. Ojala, A. Schimmelmann, B. Zolitschka, 2016. Global spread of hypoxia in freshwater ecosystems during the last three centuries is caused by rising local human pressure. Global Change Biology 22: 1481-1489. http://dx.doi.org/10.1111/gcb.13193
    • Profe, J., Zolitschka, B., Schirmer, W., Frechen, M., Ohlendorf, C., 2016. Geochemistry unravels MIS 3/2 paleoenvironmental dynamics at the loess–paleosol sequence Schwalbenberg II, Germany. Palaeogeography, Palaeoclimatology, Palaeoecology 459: 537-551. doi:10.1016/j.palaeo.2016.07.022
    • Schimmelmann, A., Lange, C.B., Schieber, J., Francus, P., Ojala, A.E.K., Zolitschka, B., 2016. Varves in marine sediments: A review. Earth-Science Reviews 159: 215-246. http://dx.doi.org/10.1016/j.earscirev.2016.04.009

      Meist zitierte Publikationen (seit 1996: kommentiert)

      • Allen, J.R.M., U. Brandt, A. Brauer, H. Hubberten, B. Huntley, J. Keller, M. Kraml, J. Mingram, J.F.W. Negendank, N.R. Nowaczyk, H. Oberhänsli, W.A. Watts, S. Wulf & B. Zolitschka (1999): Rapid last glacial environmental fluctuations: new evidence from southern Europe. Nature, 400: 740-743. First long continental record providing the temporal resolution and environmental sensitivity to reveal the extent and effects of environmental fluctuations on the continents well-known from North Atlantic marine sediment cores and Greenland ice cores. – In this study a varve and sedimentation rate-based chronology supported by radiometric dating and tephrochronology is presented for the last glacial together with high-resolution geochemical, physical and pollen data from lake sediments in Italy. http://dx.doi.org/10.1038/23432
      • Haberzettl, T., Fey, M., Lücke, A., Maidana, N., Mayr, C., Ohlendorf, C., Schäbitz, F., Schleser, G.H., Wille, M. & B. Zolitschka (2005). Climatically induced lake level changes during the last two millennia as reflected in sediments of Laguna Potrok Aike, southern Patagonia (Santa Cruz, Argentina). Journal of Paleolimnology 33: 283-302. Well-dated record of hydrological variability during the last millennium for southern mid-latitudes. – We applied a multi-proxy approach to detect a continuous and high-resolution climatic record with rapid climatic changes for the last millennium at the maar lake of Laguna Potrok Aike. Total inorganic carbon was identified as a sensitive lake level indicator pointing to medieval droughts with low lake levels, while for the “Little Ice Age” the lake level rose considerably. Subsequently, the lake level lowered again in the course of the 20th century global warming.
      • Zolitschka, B., K.-E. Behre & J. Schneider (2003). Human and climatic impact on the environment as derived from colluvial, fluvial and lacustrine archives – Examples from the Bronze Age to the Migration period, Germany. Quaternary Science Reviews 22: 81-100. Multiarchive and multiproxy regional study in Germany with the aim to distinguish climatic from human forcing. – Investigation of well-dated colluvial, fluvial and lacustrine sediment archives from 12 sites in Germany for the last 5000 years document a synchronous development of the cultural landscape. To a certain degree there is climatic influence. However, human impact strongly increased with time and became the dominant factor more and more veiling the climatic influence. There are indications that human activities may have been triggered by climatic changes as the pattern of habitation was in general dependent on the environment offered by nature. Nevertheless, also political and socio-economic factors have been involved. http://dx.doi.org/10.1016/S0277-3791(02)00182-8
      • Zolitschka, B. (1998): A 14,000 year sediment yield record from western Germany based on annually-laminated lake sediments. Geomorphology, 22: 1-17. High-resolution reconstruction of sediment yield data based on a varved sediment record for the last 13.8 ka. – Reconstruction of sediment yield data for the catchment of Holzmaar, Germany is based on high resolution geochemical and physical analyses of a varve-dated sediment record. We provide flux rates of allochthonous minerogenic deposition for the last 13,840 years. The Pleistocene/Holocene transition is characterized by instable soils and vegetation caused by adjustment to interglacial climatic conditions. This caused elevated mean sediment yields of 16 t km−2 yr−1 until 9800 cal. BP. During most of the Holocene erosive processes are insignificant and sediment yields dropped to 1.5 t km−2 yr−1. Since humans cleared forests the environment was disturbed and sediment yields increased to mean values of 14 t km−2 yr−1 during the last 2750 years. http://dx.doi.org/10.1016/S0169-555X(97)00051-2
      • Mayr, C., M. Wille, T. Haberzettl, M. Fey, S. Janssen, A. Lücke, C. Ohlendorf, G. Oliva, F. Schäbitz, G.-H. Schleser, B. Zolitschka (2007). Holocene variability of the Southern Hemisphere Westerlies in Argentinean Patagonia (52°S). Quaternary Science Reviews, 26: 579-584. Linkage between hydrological variability and Southern Hemisphere Westerlies (SHW) for Extra-Andean Patagonia. – High-resolution analyses of allochthonous pollen input into maar-lake sediments of Laguna Potrok Aike, Patagonia reflect the variability of zonal wind intensities during the Holocene at 52°S. These indicators for the strength of SHW vary on centennial timescales in concert with carbon/nitrogen ratios and titanium contents, interpreted as differential organic matter sources and minerogenic input to the sediment, respectively. A shift to generally more intense SHW suggests intensification towards modern wind conditions at that latitude since 9.2 ka cal BP.  http://dx.doi.org/10.1016/j.quascirev.2006.11.013
      • Hardy, D.R., Bradley, R.S. & Zolitschka, B. (1996): The climatic signal in varved sediments from Lake C2, northern Ellesmere Island. Journal of Paleolimnology, 16: 227-238. First calibrated and varve-based climate record produced from Arctic lake sediments. – We demonstrate that annually laminated clastic sediments preserve a high-resolution climate record in response to meteorological forcing of sediment transfer from the watershed at Lake C2 (83°N) on Ellesmere Island, Canada. A calibration process using the most recent 40 years of the varve record, three years of field measurements and meteorological data for 1951-92 from a nearby weather station was carried out. Weather-station data from 1990 and 1992 were pooled to predict the daily sediment discharge into Lake C2. Although low-frequency fluctuations of the varve record, based on eight sediment cores recovered from the centre of the lake, and predicted sediment discharge agree, slight tuning of the varve record optimizes their correlation. The adjusted chronology is both better correlated and contains a more precise climate signal (r = 0.54 for July mean).
      • Zolitschka, B. & Negendank, J.F.W. (1996): Sedimentology, dating and palaeoclimatic interpretation of a 76.3 kyr record from Lago Grande di Monticchio, southern Italy. Quaternary Sience Reviews, 15: 101-112. First application of varve-derived sedimentation-rate chronology for a long lacustrine record. – Sedimentological and microstratigraphical investigations of lacustrine sediments provide a time scale based on sedimentation rates obtained from annual laminations and cover the last 76.3 ka. This chronology agrees with radiocarbon ages and Ar/Ar dates on tephra layers. Occurrence of varves in combination with physical and geochemical sediment properties are related to environmental variations of the lake controlled by climatic conditions. Shallow water depths with dominating bioturbation are characteristic for most of the Weichselian. Increased precipitation and runoff characterise the Last Glacial Maximum (LGM) when clastic varves were deposited. A change towards nutrient rich conditions occurred at the Pleistocene-to- Holocene transition causing the formation of organic varves for most of the Holocene. In addition, two periods with higher organic productivity were also recognised prior to the LGM and interpreted as interstadial conditions. http://dx.doi.org/10.1016/0277-3791(95)00022-4
      • Zolitschka, B., A. Brauer, H. Stockhausen, A. Lang & J.F.W. Negendank (2000): Annually dated late Weichselian continental palaeoclimate record from the Eifel, Germany. Geology, 28: 783-786. The multiple-dated and multiproxy sediment record obtained from varved Lake Holzmaar extends back to 23,220 cal BP. This is the longest varve record for Central Europe and allows reconstructing variations in eolian activities as well as the precise dating of the last termination. This record complements ice-core data with a continental perspective. http://dx.doi.org/10.1130/0091-7613(2000)282.0.CO;2
      • Zolitschka, B., Schäbitz, F., Lücke, A., Clifton, G., Corbella, H., Ercolano, B., Haberzettl, T., Maidana, N., Mayr, C., Ohlendorf, C., Oliva, G., Paez, M.M., Schleser, G.H., Soto, J., Tiberi, P., Wille, M. (2006). Crater lakes of the Pali Aike Volcanic Field as key sites of paleoclimatic and paleoecological reconstructions in southern Patagonia, Argentina. Journal of South American Earth Sciences 21: 294-309. A limnogeological survey performed in south-eastern Patagonia determined two deep crater lakes for environmental reconstruction. Laguna Azul is a Holocene freshwater lake while Laguna Potrok Aike is a much older subsaline lake. Both comprise records of lake level fluctuations triggered by hydrological changes and potentially provide a detailed terrestrial record of past environmental and climatic variability for southern mid-latitudes. http://dx.doi.org/10.1016/j.jsames.2006.04.001
      • Ojala, A.E.K., Francus, P., Zolitschka, B., Besonen, M. and Lamoureux, S.F. (2012).The chronological characteristics of sedimentary varves – a review. Quaternary Science Reviews 43: 45-60. The worldwide distribution of 108 varved sediment records and the fidelity of their varve chronologies were analysed. These records are typically 200–500 cm long and cover a period of 1000–2000 years. Chronological errors associated with counting of varves are 1-3% but are available only for 57% of all published records. Almost 90% of published varve chronologies have been cross-checked with independent dating methods applying radiometric techniques or using historical events as time markers to achieve a very precise age–depth control. http://dx.doi.org/10.1016/j.quascirev.2012.04.006
      • Zolitschka, B., P. Francus, A.E.K. Ojala, A. Schimmelmann, 2015. Varves in lake sediments – a review. Quaternary Science Reviews 117: 1-41. This up-to-date review deals comprehensively with the global distribution, composition, formation and preservation of varved lacustrine sediments. Moreover, it highlights their applications, specifically dealing with other science that has been enabled. It is superbly illustrated (34 figures), thoroughly researched (>320 references) and represents an ideal starting point for anyone unfamiliar with this field of research. http://dx.doi.org/10.1016/j.quascirev.2015.03.019

      Organisierte Workshops

      • ICDP-Workshop PASADO, March 2006 in Rio Gallegos, Argentina
      • 1st PAGES Varve Working Group workshop “Advances in Varved Sediment Studies since the last 10 years”, Palmse Manor House (ca 80 km east of Tallinn), Estonia (March 2010), together with Pierre Francus, Antti Ojala, Rick Behl and Martin Grosjean
      • 2nd PAGES Varve Working Group workshop “Learning from Other Communities—Towards More Robust Varve Chronologies”, Corpus Christi, Texas, USA (March 2011), together with Mark Besonen, Pierre Francus, Antti Ojala and Rick Behl
      • 3rd PAGES Varve Working Group workshop “Proxy calibration and validation”, Manderscheid, Germany (March 2012), together with Pierre Francus and Antti Ojala

      Convener auf wissenschaftlichen Konferenzen

      • "The Late-Quaternary of South-America - biological and sedimentological archives for palaeoenvironmental reconstructions", DEUQUA 2004 in Nijmegen (August/September 2004), together with Daniel Ariztegui
      • "Quaternary climate evolution", GEO Leipzig (September/October 2004), together with Michael Pirrung
      • "Lacustrine records across Latin-America: High-Resolution Archives of Environmental Variability", AGU Fall Meeting in San Francisco (December 2004), together with Daniel Ariztegui and Mark Abbott
      • „New directions in maar palaeoclimate research“, INQUA 2007 in Cairns, Australia (July/August 2007), together with Paul Augustinus and Phil Shane
      • „Global Lake Drilling in the 21st Century: The Emergence of Long Continental Paleoenvironmental Records”, AGU Fall Meeting 2009 in San Francisco, USA (December 2009), together with Daniel Ariztegui and Julie Brigham-Grette
      • “Environmental and climatic changes on a human time scale – Varves and other high-resolution sedimentary records with up to decadal resolution”, AGU Fall Meeting 2013 in San Francisco, USA (December 2013), together with Pierre Francus and Antti Ojala
      • “What’s up with varves?”, 19th International Sedimentological Congress Geneva, Switzerland (August 2014), together with P. Francus, A. Ojala, and A. Schimmelmann
      • “Natural and man-made environmental perturbations recorded in sediment archives with high resolution”, XIX INQUA Congress, Nagoya, Japan (July-Aug. 2015), together with A. Ojala, H. Kitagawa, P. Francus, M. Okuno, A. Schimmelmann, K. Yamada and Y. Yasuda


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      Schimmelmann, A., Lange, C.B., Schieber, J., Francus, P., Ojala, A.E.K., Zolitschka, B., 2016. Varves in marine sediments: A review. Earth-Science Reviews 159: 215-246. http://dx.doi.org/10.1016/j.earscirev.2016.04.009

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