Publikationen

Publikationen

Publikationen und Präsentationen

Publikationen

2016

Ehlert, C., A. Reckhardt, J. Greskowiak, B. T. P. Liguori, P. Böning, R. Paffrath, H.-J. Brumsack & K. Pahnke (2016). Transformation of silicon in a sandy beach ecosystem: insights from stable silicon isotopes from fresh and saline groundwaters. Chemical Geology, 440, 207-218. doi:10.1016/j.chemgeo.2016.07.015

Doering, K., Z. Erdem, C. Ehlert, S. Fleury, M. Frank & R. Schneider (2016). Changes in diatom productivity and upwelling intensity off Peru since the Last Glacial Maximum: Response to basin-scale atmospheric and oceanic forcing. Paleoceanography 31. doi: 10.1002/2016PA002936.

Grasse, P., M. Brzezinski, D. Cardinal, G. F. de Souza, P. Andersson, I. Closset, Z. Cao, M. Dai, C. Ehlert, N. Estrade, R. Francois, M. Frank, G. Jiang, J. L. Jones, E. Kooijman, Q. Liu, D. Lu, K. Pahnke, E. Ponzevera, M. Schmitt, X. Sun, J. Sutton, F. Thil, D. Weis, F. Wetzel, A. Zhang & Z. Zhang (2016). GEOTRACES Intercalibration of the Stable Silicon Isotope Composition of Dissolved Silicic Acid in Seawater. Journal of Analytical Atomic Spectrometry. doi: 10.1039/c6ja00302h.

Böning, P., C. Ehlert, J. Niggemann, B. Schnetger & K. Pahnke (2016). Thallium Dynamics in the Weser Estuary (NW Germany), Estuarine, Coastal and Shelf Science, 187, 146–51. Doi: 10.1016/j.ecss.2016.12.004.

Grasse P., Ryabenko E., Ehlert C., Altabet M. A. and Frank M. (2016) Silicon and nitrogen cycling in the upwelling area off Peru: A dual isotope approach. Limnol. Oceanogr. doi: 10.1002/lno.10324

Ehlert C., Doering K., Wallmann K., Scholz F., Sommer S., Grasse P., Geilert S. and Frank M. (2016) Stable silicon isotope signatures of marine pore waters – biogenic opal dissolution versus authigenic clay mineral formation. Geochim. Cosmochim. Acta 191, 102–117. doi: 10.1016/j.gca.2016.07.022

Doering, K., C. Ehlert, P. Grasse, X. Crosta, S. Fleury, M. Frank & R. Schneider (2016). Differences between mono-generic and mixed diatom silicon isotope composi- tions trace present and past nutrient utilisation off Peru. Geochimica et Cosmochimica Acta, 177, 30–47. doi:10.1016/j.gca.2015.12.029

2015

Ehlert, C., P. Grasse, D. Gutiérrez, R. Salvatteci & M. Frank (2015). Nutrient Utilisation and Weathering Inputs in the Peruvian Upwelling since the Little Ice Age. Climate of the Past, 11, 187-202, doi:10.5194/cp-11-187-2015.

2013

Grasse, P., C. Ehlert & M. Frank (2013). The influence of water mass mixing on the dissolved silicon isotope composition of the Eastern Equatorial Pacific. Accepted for publication in Earth and Planetary Science Letters.

Ehlert, C., P. Grasse & M. Frank (2013). Changes in Silicate Utilisation and Upwelling Intensity off Peru Since the Last Glacial Maximum - Insights from Silicon and Neodymium Isotopes. Quaternary Science Reviews, 72, 18-35.doi: 10.1016/j.quascirev.2013.04.013.

2012

Ehlert, C., P. Grasse, E. Mollier-Vogel, T. Böschen, J. Franz, G. F. de Souza, B. Reynolds, L. Stramma & M. Frank (2012). Factors controlling the silicon isotope distribution in waters and surface sediments of the Peruvian coastal upwelling. Geochimica et Cosmochimica Acta, 99, 128-145. doi: 10.1016/j.gca.2012.09.038.

Cao, Z., M. Frank, M. Dai, P. Grasse, & C. Ehlert (2012). Silicon isotope constraints on sources and utilization of silicic acid in the northern South China Sea. Geochimica et Cosmochimica Acta, 97, 88–104. doi:10.1016/j.gca.2012.08.039.

Etourneau, J., C. Ehlert, M. Frank, P. Martinez, & R. Schneider (2012). Contribution of changes in opal productivity and nutrient distribution in the coastal upwelling systems to late Pliocene/early Pleistocene climate cooling. Climate of the Past, 8, 1435–1445. doi:10.5194/cp-8-1435-2012.

2011

Ehlert, C., M. Frank, B. A. Haley, U. Böniger, P. De Deckker & F. X. Gingele (2011). Current transport versus continental inputs in the eastern Indian Ocean: Radiogenic isotope signatures of clay size sediments. Geochemistry Geophysics Geosystems, 12, Q06017(6), 1-17. doi:10.1029/2011GC003544.

Kindler, P., F. Godefroid, M. Chiaradia, C. Ehlert, A. Eisenhauer, M. Frank, C.-A. Hasler & E. Samankassou (2011). Discovery of Miocene to early Pleistocene deposits on Mayaguana, Bahamas: Evidence for recent active tectonism on the North American margin. Geology, 39(6), 523-526. doi:10.1130/G32011.1.

Konferenzbeiträge

Ehlert, C., R. Paffrath, A. Reckhardt & K. Pahnke: Transformation of silicon in a sandy beach ecosystem: insights from stable silicon isotopes in ground- and pore waters. Isotopes in Biogenic Silica (IBiS) Meeting, London, UK (05.-07.05.2015, Talk)

Ehlert, C., R. Paffrath, A. Reckhardt & K. Pahnke: Transformation of silicon in a sandy beach ecosystem: insights from stable silicon isotopes in ground- and pore waters. AGU Fall Meeting, San Francisco, USA (14.-19.12.2014, Poster)

Ehlert, C., K. Doering, K. Wallmann, P. Grasse & M. Frank: Stable silicon isotopes in porewaters off Peru – diatom dissolution versus authigenic clay mineral formation. Goldschmidt Conference, Florence, Italy (26.-30.08.2013, Poster)

Ehlert, C., K. Doering, K. Wallmann, P. Grasse & M. Frank: Stable silicon isotopes in porewaters off Peru – diatom dissolution versus authigenic clay mineral formation processes. EnvironMetal Isotopes (EMI) Converence, Ascona, Switzerland (18.-23.08.2013, Poster)

Ehlert, C., K. Doering, K. Wallmann, P. Grasse & M. Frank: Stable silicon isotopes in porewaters off Peru – diatom dissolution versus authigenic clay mineral formation processes. Isotopes in Biogenic Silica (IBiS) Meeting, Helsinki, Finnland (03.-05.06. 2013, Talk)

Ehlert, C., P. Grasse, D. Gutiérrez, R. Salvatteci & M. Frank: Evolution of Nutrient Utilisation in the Peruvian Upwelling Region since the Little ICe Age. Isotopes in Biogenic Silica (IBiS) Meeting, Hamburg, Germany (28.-30.05.2012, Poster)

Ehlert, C., P. Grasse & M. Frank: Changes in silicate utilization and upwelling intensity off Peru since the LGM – Insights from silicon and neodymium isotopes. Goldschmidt Conference, Prague, Czech Republic (15.-19.08.2011, Talk)

Ehlert, C., P. Grasse & M. Frank: Changes in silicate utilization and upwelling intensity off Peru since the LGM – insights from silicon isotopes. EGU General Assembly, Vienna, Austria, (03.-08.04.2011, Talk)

Ehlert, C., P. Grasse, M. Frank & L. Stramma: Silicon isotope distribution in the Peruvian coastal upwelling area. 10th International Conference on Paleoceanography, San Diego, USA (29.08.-03.09.2010, Poster)

Ehlert, C., M. Frank, B.A. Haley, F. Gingele & P. de Deckker: Radiogenic isotope signatures of clay-size sediments in the Eastern Indian Ocean: Weathering inputs and current regimes during the latest quaternary, Goldschmidt Conference, Davos, Switzerland (21.-26.06.2009, Poster)