Cao, Z., Rao, X., Li, Y., Hong, Q., Wei, L., Yu, Y., Ehlert, C., Liu, B., Siebert, C., Hathorne, E. C., Zhang, Z., Scholz, F., Kasten, S., & Frank, M. (2023). Stable Barium Isotope Fractionation in Pore Waters of Estuarine Sediments. Geochemistry, Geophysics, Geosystems, 24(6). https://doi.org/10.1029/2023GC010907

Liguori, B. T. P., Ehlert, C., Nöthig, E., Ooijen, J. C., & Pahnke, K. (2021). The Transpolar Drift Influence on the Arctic Ocean Silicon Cycle. Journal of Geophysical Research: Oceans, 126(e2021JC017352). https://doi.org/10.1029/2021jc017352

*Doering, K., Ehlert, C., Pahnke, K., Frank, M., Schneider, R., & Grasse, P. (2021). Silicon Isotope Signatures of Radiolaria Reveal Taxon-Specific Differences in Isotope Fractionation. Frontiers in Marine Science, 8(666896). https://doi.org/10.3389/fmars.2021.666896

*Tréguer, P. J., Sutton, J. N., Brzezinski, M., Charette, M. A., Devries, T., Dutkiewicz, S., Ehlert, C., Hawkings, J., Leynaert, A., Liu, S. M., Llopis Monferrer, N., López-Acosta, M., Maldonado, M., Rahman, S., Ran, L., & Rouxel, O. (2021). Reviews and syntheses: The biogeochemical cycle of silicon in the modern ocean. Biogeosciences, 18(4), 1269–1289. https://doi.org/10.5194/bg-18-1269-2021

*Geilert, S., Grasse, P., Doering, K., Wallmann, K., Ehlert, C., Scholz, F., Frank, M., Schmidt, M., & Hensen, C. (2020). Impact of ambient conditions on the Si isotope fractionation in marine pore fluids during early diagenesis. Biogeosciences, 17, 1745–1763. https://doi.org/10.5194/bg-17-1745-2020

*Liguori, B. T. P., Ehlert, C., & Pahnke, K. (2020). The Influence of Water Mass Mixing and Particle Dissolution on the Silicon Cycle in the Central Arctic Ocean. Frontiers in Marine Science, 7(202). https://doi.org/10.3389/fmars.2020.00202

*Paffrath, R., Pahnke, K., Behrens, M. K., Reckhardt, A., Ehlert, C., Schnetger, B., & Brumsack, H.-J. (2020). Rare Earth Element Behavior in a Sandy Subterranean Estuary of the Southern North Sea. Frontiers in Marine Science, 7(424). https://doi.org/10.3389/fmars.2020.00424

*Waska, H., Greskowiak, J., Ahrens, J., Beck, M., Ahmerkamp, S., Böning, P., Brumsack, H.-J., Degenhardt, J., Ehlert, C., Engelen, B., Grünenbaum, N., Holtappels, M., Pahnke, K., Marchant, H. K., Massmann, G., Meier, D., Schnetger, B., Schwalfenberg, K., Simon, H., … Dittmar, T. (2019). Spatial and Temporal Patterns of Pore Water Chemistry in the Inter-Tidal Zone of a High Energy Beach. Frontiers in Marine Science, 6, 154. https://doi.org/10.3389/fmars.2019.00154

*Doering, K., Ehlert, C., Martinez, P., Frank, M., & Schneider, R. (2019). Latitudinal variations of δ30Si and δ15N signatures along the Peruvian shelf: quantifying the effects of nutrient utilization versus denitrification over the past 600 years. Biogeosciences, 16, 2163–2180. https://doi.org/10.5194/bg-16-2163-2019

*Sutton, J. N., André, L., Cardinal, D., Conley, D. J., de Souza, G. F., Dean, J., Dodd, J. P., Ehlert, C., Ellwood, M. J., Frings, P. J., Grasse, P., Hendry, K. R., Leng, M. J., Michalopoulos, P., Panizzo, V. N., & Swann, G. E. A. (2018). A Review of the Stable Isotope Bio-geochemistry of the Global Silicon Cycle and Its Associated Trace Elements. Frontiers in Earth Science. https://doi.org/10.3389/feart.2017.00112

Böning, P., Ehlert, C., Niggemann, J., Schnetger, B., & Pahnke, K. (2017). Thallium dynamics in the Weser estuary (NW Germany). Estuarine, Coastal and Shelf Science, 187, 146–151. https://doi.org/10.1016/j.ecss.2016.12.004

Grasse, P., Brzezinski, M. A., Cardinal, D., de Souza, G. F., Andersson, P. S., Closset, I., Cao, Z., Dai, M., Ehlert, C., Estrade, N., Francois, R., Frank, M., Jiang, G., Jones, J. L., Kooijman, E., Liu, Q., Lu, D., Pahnke, K., Ponzevera, E., … Zhang, Z. (2017). GEOTRACES Intercalibration of the Stable Silicon Isotope Composition of Dissolved Silicic Acid in Seawater. Journal of Analytical Atomic Spectrometry. https://doi.org/10.1039/c6ja00302h

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

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

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

Grasse, P., Ryabenko, E., Ehlert, C., Altabet, M. A., & Frank, M. (2016). Silicon and nitrogen cycling in the upwelling area off Peru: A dual isotope approach. Limnology and Oceanography, 61, 1661–1676. https://doi.org/10.1002/lno.10324

Doering, K., Erdem, Z., Ehlert, C., Fleury, S., Frank, M., & Schneider, R. R. (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. https://doi.org/10.1002/2016PA002936

*Ehlert, C., Grasse, P., Gutiérrez, D., Salvatteci, R., & Frank, M. (2015). Nutrient utilisation and weathering inputs in the Peruvian upwelling region since the Little Ice Age. Climate of the Past, 11, 187–202. https://doi.org/10.5194/cp-11-187-2015

Ehlert, C., Grasse, P., & Frank, M. (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. https://doi.org/10.1016/j.quascirev.2013.04.013

Grasse, P., Ehlert, C., & Frank, M. (2013). The influence of water mass mixing on the dissolved Si isotope composition in the Eastern Equatorial Pacific. Earth and Planetary Science Letters, 380, 60–71. https://doi.org/10.1016/j.epsl.2013.07.033

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

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

*Etourneau, J., Ehlert, C., Frank, M., Martinez, P., & Schneider, R. R. (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. https://doi.org/10.5194/cp-8-1435-2012

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

Kindler, P., Godefroid, F., Chiaradia, M., Ehlert, C., Eisenhauer, A., Hasler, C.-A., Samankassou, E., Frank, M., & Hasler, A. (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. https://doi.org/10.1130/G32011.1

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Ferdelman, T. G., & Party, S. S. (2016). RV SONNE SO245 Cruise Report / Fahrtbericht (p. 104). SONNE-Berichte. https://doi.org/0.2312/cr_so245