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Jeroen Groeneveld


+49 421 218-65455


+49 421 218-65454



Geo 5540

Jeroen Groeneveld

Faculty of Geosciences
Bremen University
Klagenfurter Straße 2-4
Room 5540 Geo-Building
D-28359 Bremen
Tel.: ++49-421-218 65455
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Academic Career:
7/2015-....: Postdoc MARUM (Bremen) in the PALIO project
3/2015-6/2015: BECC Guest researcher Quaternary Sciences, Dept. of Geology, Lund University, Sweden
8/2014-3/2015: Postdoc ECUS (AWI Potsdam) and MARUM (Bremen)
11/2013-1/2014: Postdoc MARUM (Bremen) and IODP Germany (BGR Hannover)
11/2011-10/2013: Postdoc Faculty of Geosciences, Bremen University, Bremen
2009-10/2011: Postdoc Excellence Cluster (Marum), Alfred Wegener Institute, Bremerhaven.
2006-2008: Postdoc (RCOM Fellowship) at Center for Marine Environmental Sciences (Marum), University of Bremen, Germany.
8/2005-12/2005: Postdoc at IFM-Geomar, Leibniz Institute of Marine Sciences, Kiel, Germany, DFG-Research Unit „Ocean Gateways“
11/2001-7/2005:PhD at IFM-Geomar, Leibniz Institute of Marine Sciences, Kiel, Germany,
DFG-Research Unit „Ocean Gateways“ (http://e-diss.uni-kiel.de/diss_1516/):
“Effect of the Pliocene closure of the Panamanian Gateway on Caribbean
and east Pacific sea surface temperatures and salinities by applying combined
Mg/Ca and 18O measurements (5.6-2.2 Ma)“ (Magna cum Laude)
Supervision: PD Dr. D. Nürnberg, Prof. Dr. R. Tiedemann
Autumn 2001: Mammoet Company, Project Lifting Kursk, Utrecht, Netherlands
2000-2001: Backpacking Australia
1994-2000: Geology Studies Institute of Earth Sciences, University of Utrecht,
Netherlands. Master thesis: „A high resolution record of the Arabian
monsoon variability and the Oxygen Minimum Zone from the Pakistan
Margin“ Supervision: Dr. W.J. Zachariasse, Dr. G.J. Reichart
1988-1994: Gymnasium Camphusianum, Gorinchem, Netherlands

Research Interests and current projects:
- Reconstruction of past changes in the Walker circulation over the Indian Ocean using sea surface and thermocline temperatures off Tanzania and Indonesia to reconstruct regional and cross-basin gradients (PALIO Project).

- Reconstructing Pliocene changes in climate and oceanography in the Atlantic, Caribbean and Pacific, including the closure of the Isthmus of Panama, the intensification of the Northern Hemisphere Glaciation, permanent El Niño like climate, and the development of upwelling intensity in the Atlantic and Pacific (IODP Exp. 356; IDEAL project).

- Ongoing development of Mg/Ca (paleo-thermometry) and other trace metal/Ca ratios (e.g. Mn/Ca, Ba/Ca, B/Ca) as proxies to reconstruct past changes in water column/bottom conditions (e.g. temperature, salinity, oxygen content) on (planktonic and benthic) foraminifera including geochemical signatures in single foraminifera (ECUS project).

- Development and application of trace metal/Ca proxies in benthic foraminifera in shallow marine/coastal environments like the Baltic Sea Basin and fjord-like areas in Scandinavia and Scotland (CONTEMPORARY, DISCO, and IODP Exp. 347 projects).

Research Expeditions:
2016: FS Meteor M133 (Cape Town - Port Stanley)
2015: Joides Resolution - IODP Exp. 356 Indonesian Throughflow (Perth - Darwin)
2013: Greatship Manisha - IODP MSP Exp. 347 Baltic Sea (Kiel - Kiel)
2013: RV Sonne 228 (Kaoshiung - Jayapura)
2013: RV Calanus (Oban - Oban)
2012: RV Skagerak (Varberg - Simrishamn)
2008: FS Meteor 75/2 (Dar es Salaam - Dar es Salaam)
2002: RV Marion Dufresne MD127/PAGE (Cancun - Tampa - Belem)

- Ezat, M.M., T.L. Rasmussen, B. Hönisch, J. Groeneveld, P. DeMenocal. Episodic release of CO2 from the high latitude North Atlantic during the last 135 kyr. Nature Communications 8:14498, doi10.1038/ncomms14498

- Ezat, M.M., T.L. Rasmussen, D.J.R. Thornally, J. Olsen, L.C. Skinner, B. Hönisch, J. Groeneveld. Ventilation history of Nordic seas overflows during the last glacial period revealed by species-specific benthic foraminiferal 14C dates. Paleoceanography 32, doi:10.1002/2016PA003053

- Gallagher, S.J., C.S. Fulthorpe, K. Bogus, Exp. 356 Scientists. Expedition 356 Summary. Proceedings of the International Ocean Discovery Program 356       
- Groeneveld, J., J. Henderiks, W. Renema, C.M. McHugh, D. De Vleeschouwer, B.A. Christensen, C.S. Fulthorpe, L. Reuning, S.J. Gallagher, K. Bogus, G. Auer, T. Ishiwa, and Expedition 356 Scientists. Australian shelf sediments reveal shifts in Miocene Southern Hemisphere Westerlies. Science Advances 3, e1602567

- Hennissen, J., M.J. Head, S. De Schepper, J. Groeneveld. Assessing dinoflagellate cyst palaeoecology during the Pliocene-Pleistocene climatic transition in the North Atlantic. Palaeo-3 470. 81-108

- Karas, C., D. Nürnberg, A. Bahr, J. Groeneveld, J. O. Herrle, R. Tiedemann, P. B. deMenocal. Pliocene oceanic seaways and global climate. Scientific Reports 7: 39842

- Munz, P. S. Steinke, A. Böll, A. Lückge, J. Groeneveld, M. Kucera, H. Schulz. Decadal resolution record of Oman margin upwelling indicates persistent solar forcing of the Indian summer monsoon after the early Holocene summer insolation maximum. Accepted Climate of the Past

- Ezat, M.M., T.L. Rasmussen, J. Groeneveld. Reconstruction of hydrographic changes in the southern Norwegian Sea during the past 135 kyr and the impact of different foraminiferal Mg/Ca cleaning protocols. Geochem. Geophys. Geosyst., 17, doi:10.1002/2016GC006325.

- Fraile, I., H. Arrizabalaga, J. Groeneveld, M. Kölling, S. Deguara, M. N. Santos, D. Macías, P. Addis, S. Karakulak, D. L. Dettman, J. R. Rooker. The imprint of anthropogenic CO2 emissions on Atlantic bluefin tuna otoliths. J. Marine Systems 158, 26-33.

- Fulthorpe, C., S. Gallagher, K. Bogus, B. Christensen, J. Groeneveld, Exp. 356 Scientists. Expedition 356 tracks the Indonesian Throughflow and Australian climate history. Ocean Discovery, Spring 2016, 6-9.

- Morard, R., M. Reinelt, C.M. Chiessi, J. Groeneveld, M. Kucera. Tracing shifts of oceanic fronts using the cryptic diversity of the planktonic foraminifera Globorotalia inflata. Paleoceanography, 31, doi:10.1002/2016PA002977.

- Andrén, T., Jørgensen, B.B., and Cotterill, C., and Expedition 347 Scientists. Proc. IODP, 347: College Station, TX (Integrated Ocean Drilling Program). doi:10.2204/iodp.proc.347.2015

- Andrén, T., Jørgensen, B.B., Cotterill, C., Green, S., and Expedition 347 Scientists. IODP expedition 347: Baltic Sea basin paleoenvironment and biosphere. Scientific Drilling 3, 1-12.

- Chiessi, C.M., S. Mulitza, G. Mollenhauer, J.B. Silva, J. Groeneveld, M. Prange. Thermal evolution of the western South Atlantic and the adjacent continent during Termination 1. Climate of the Past 11, 915-929, doi:10.5194/cp-11-915-2015

- Hennissen, J., M.J. Head, S. De Schepper, J. Groeneveld. Increased seasonality during the intensification of Northern Hemisphere glaciation at the Pliocene-Pleistocene transition ~2.6 Ma. Quaternary Science Reviews 129. 321-332

- Matos, L., F. Mienis, C. Wienberg, N. Frank, C. Kwiatkowski, J. Groeneveld, F. Thil, F. Abrantes, M.R. Cunha, D. Hebbeln. Interglacial occurrence of col-water corals off Cape Lookout (NW Atlantic): first evidence of the Gulf Stream influence. Deep-Sea Research I, 105. 158-170

- McKay, C.L., J. Groeneveld, H.L. Filipsson, D. Gallego-Torres, M. Whitehouse, T. Toyofuku, O.E. Romero. A comparison of benthic foraminiferal Mn/Ca and sedimentary Mn/Al as proxies of relative bottom water oxygenation in the low latitude NE Atlantic upwelling system. Biogeosciences 12, 5415-5428.

- Setiawan, R. M. Mohtadi, J. Southon, J. Groeneveld, S. Steinke, D. Hebbeln. The Sunda Strait opening and its effect on the hydrography of the eastern tropical Indian Ocean. Paleoceanography 30, doi:10.1002/2015PA002802

- Voigt, I., C.M. Chiessi, M. Prange, S. Mulitza, J. Groeneveld, V. Varma, R. Henrich. Holocene shifts of the Southern Westerlies across the South Atlantic. Paleoceanography, doi:10.1002/2014PA002677

- Bornemann, A., R.D. Norris, J.A. Lyman, S. D'haenens, J. Groeneveld, U. Röhl, K.A. Farley, R.P. Speijer. Persistent environmental change after the Paleocene-Eocene Thermal Maximum in the eastern North Atlantic. Earth Plan. Sci. Letters 394, 70-81

- Ezat, M., T. Rasmussen, J. Groeneveld. Persistent intermediate water warming during cold stadials in the SE Nordic seas during the last 65 kyr. Geology, doi:10.1130/G35579.1

- Groeneveld, J., E.C. Hathorne, S. Steinke, H. DeBey, A. Mackensen, R. Tiedemann. Glacial induced closure of the Panamanian Gateway during Marine Isotope Stages (MIS) 96-101 (2.5 Ma). Earth Plan. Sci. Lett., 404, doi:10.1016/j.epsl.2014.08.007

- Hennissen, J.A.I., M.J. Head, S. De Schepper, J. Groeneveld. Palynological evidence for a southward shift of the North Atlantic Current at ~2.6 Ma during the intensification of late Cenozoic Northern Hemisphere glaciations. Paleoceanography 28, doi:10.1002/2013PA002543.

- Osborne, A., D. Newkirk, J. Groeneveld, E.E. Martin, R. Tiedemann, M. Frank. The neodymium and lead isotope record of the final stages of Central America. Paleoceanography 29, doi:10.1002/2014PA002676.

- Romahn, S., A. Mackensen, J. Groeneveld, J. Pätzold. Deglacial Intermediate Water organization: new evidence from the Indian Ocean. Climate of the Past 10, 293-303, doi:10.5194/cp-10-293/2014/

- Steinke, S., M. Prange, C. Feist, J. Groeneveld, M. Mohtadi. Upwelling variability off southern Indonesia over the past two millennia. Geophys. Res. Letters., doi:10.1002/2014GL061450

- Bouimetarhan, I., J. Groeneveld, L. Dupont, K. Zonneveld. Low- to high-productivity pattern within Heinrich stadial 1: Inferences from dinoflagellate cyst records off Senegal. Global and Planetary Change 106, 64–76

- Chiessi, C., S. Mulitza, J. Groeneveld, J.B. Silva, M.C. Campos, M.H. Gurgel. Variability of the Brazil Current during the late Holocene. Accepted in Palaeogeography, Palaeoclimatology, Palaeoecology

- De Schepper, S., J. Groeneveld, B.D.A. Naafs, C. Van Renterghem, J. Hennissen, M.J. Head, S. Louwye. Northern Hemisphere glaciation during the globally warm Late Pliocene. PLoS One, doi: 10.1371/journal.pone.0081508

- Groeneveld, J., H.L. Filipsson. Trace metal/Ca ratios in benthic foraminifera: The potential to reconstruct past variations in temperature and hypoxia in shelf regions. Biogeosciences, 10, doi:10.5194/bg-10-5125-2013

- Anjar, J., L. Adrielsson, O. Bennike, S. Björck, H.L. Filipsson, J. Groeneveld, K.L. Knudsen, N.K. Larsen, P. Möller. Palaeoenvironmental history of the Baltic Sea basin during Marine Isotope Stage 3. Quaternary Science Reviews 34, 81-92

- Huang, E., S. Mulitza, A. Paul, J. Groeneveld, S. Steinke, M. Schulz. Response of the eastern tropical Atlantic central waters to thermohaline circulation changes during the Last Glacial Maximum and Heinrich Stadial 1. Paleoceanography 27, PA3229, doi:10.1029/2012PA002294

- Groeneveld, J., and C.M. Chiessi. Mg/Ca of Globorotalia inflata as a recorder of permanent thermocline temperatures in the South Atlantic. Paleoceanography 26, PA2203, doi:10.1029/2010PA001940

- Haarmann, T., E.C. Hathorne, M. Mohtadi, J. Groeneveld, M. Kölling, T. Bickert. Mg/Ca ratios of single planktonic foraminifer shells and the potential to reconstruct the
thermal seasonality of the water column. Paleoceanography 26, PA3218, doi:10.1029/2010PA002091

- Hessler, I., S. Steinke , J. Groeneveld , L. Dupont , G. Wefer. Impact of abrupt climate change in the tropical southeast Atlantic during Marine Isotope Stage (MIS) 3. Paleoceanography 26, PA4209, doi:10.1029/2011PA002118

- Mohtadi, M., D.W. Oppo, A. Lückge, R. De Pol-Holz, S. Steinke, J. Groeneveld, N. Hemme, D. Hebbeln. Reconstructing thermal structure of the upper ocean: insights from planktic foraminifera shell chemistry and alkenones in modern sediments of the tropical eastern Indian Ocean. Paleoceanography 26, PA3219, doi:10.1029/2011PA002132

- Raden, U. von, J. Groeneveld, M. Raitzsch, M. Kucera. Mg/Ca in the planktonic foraminifera Globorotalia inflata and Globigerinoides bulloides from Western Mediterranean plankton town and core top samples. Mar. Micropaleontology 78. 101-112

- Rackebrandt, N., H. Kuhnert, J. Groeneveld, T. Bickert. Persisting maximum Agulhas leakage indicated by subtropical South Atlantic massive Ethmodiscus oozes (MIS 14). Paleoceanography 26, PA3202, doi:10.1029/2010PA001990

- Raitzsch, M., E. Hathorne, H. Kuhnert, J. Groeneveld, T. Bickert. Modern and Late Pleistocene B/Ca ratios of the benthic foraminifer Planulina wuellerstorfi determined with laser ablation ICP-MS. Geology 39-11, 1039?1042, doi:10.1130/G32009.1

- Raitzsch, M., H. Kuhnert, E.C. Hathorne, J. Groeneveld, T. Bickert. U/Ca in benthic foraminifers: A proxy for the deep-sea carbonate system. G-cubed, 12-6, Q06019, doi:10.1029GC003344

- Schepper, S.de, E. Fischer, J. Groeneveld, M. Head, J. Matthiesen. Deciphering the palaeoecology of Late Pliocene and Early Pleistocene dinoflagellate cysts. Paleo-cubed 309 (2011) 17–32

- Steinke, S., C. Glatz, M. Mohtadi, J. Groeneveld, Q. Li, Z. Jian. Past dynamics of the East Asian monsoon: No inverse behaviour between the summer and winter monsoon during the Holocene. Global Planetary Change 78. 170-177

- Zarries, M., H. Johnstone, M. Prange, S. Steph, J. Groeneveld, S. Mulitza, A. Mackensen. Bipolar seesaw in the northeastern tropical Atlantic during Heinrich stadials. Geophysical Research Letters 38, L04706, doi:10.1029/2010GL046070

- Fink, C., K.-H. Baumann, J. Groeneveld, S. Steinke. Sr/Ca and stable isotopes in coccolith carbonate of different grain-size fractions in South Atlantic. Geobios 43. 151-164

- Mohtadi, M., S. Steinke, A. Lückge, J. Groeneveld, E.C. Hathorne. Glacial to Holocene surface hydrography of the tropical estern Indian Ocean. Earth Planetary Science Letters 292. 89-97

- Mohtadi, M., A. Lückge, S. Steinke, J. Groeneveld, D. Hebbeln, N. Westphal. Late Pleistocene surface and thermocline conditions of the eastern tropical Indian Ocean. Quaternary Science Reviews 29, 887-896

- Steinke, S., J. Groeneveld, H. Johnstone, R. Rendle-Bühring. East Asian summer monsoon weakening after 7.5 Ma: Evidence from combined planktonic foraminifera Mg/Ca and d18O (ODP Site 1146; northern SCS). Palaeogeography, Palaeoclimatology, Palaeoecology 289, 33-43

- Steinke, S., J. Groeneveld, M. Mohtadi, L.-C. Lin, L. Löwemark, M.-T. Chen, R.Rendle Bühring. Reconstructing the southern South China Sea upper water-column structure over the last 22 ka: Implications for the East Asian winter monsoon development. Paleoceanography, 25, PA2219, doi:10.1029/2009PA001850

- Steph, S., R.Tiedemann, M. Prange, J. Groeneveld, M. Schulz, A. Timmermann, D.Nürnberg, C. Saukel, G.H.Haug. Early Pliocene increase in thermohaline overturning preconditioned the development of the modern equatorial Pacific cold tongue. Paleoceanography 25, doi:10.1029/2008PA001645

- Schepper, S.de, M.J. Head, J. Groeneveld. Sea surface conditions in the eastern North Atlantic spanning Marine Isotope Stage M2 (Middle Pliocene, ca.3.30 Ma). Paleoceanography, 24, PA4206, doi:10.1029/2008PA001725

- Mohtadi, M., S. Steinke, J. Groeneveld, H.G. Fink, T. Rixen, D. Hebbeln, B. Donner, B. Herunadi. Low-latitude control on seasonal and interannual changes in planktonic foraminiferal flux and shell geochemistry off south Java: a sediment trap study. Paleoceanography, 24, PA1201,

- Chiessi, C.M., S. Mulitza, A. Paul, J. Pätzold, J. Groeneveld, G. Wefer. South Atlantic interocean exchange as the trigger for the Bolling warm event. Geology 36-12, 919-922, doi:10.1130/G24979A.1

- Greaves, M., N. Caillon, Mg/Ca-Intercalibration Team. Interlaboratory comparison study of calibration standards for foraminiferal Mg/Ca thermometry. Geochemistry, Geophysics, Geosystems 9-8, doi:10.1029/2008GC001974

- Raitzsch, M., H. Kuhnert, J. Groeneveld, T. Bickert. Benthic foraminifer Mg/Ca anomalies in South Atlantic core top sediments and their implications for paleothermometry. Geochemistry, Geophysics, Geosystems, 9-5, doi:10.1029/2007GC001788

- Steinke, S., M. Kienast, J. Groeneveld, M.-T. Chen, R. Rendle-Bühring. Proxy dependence of the timing of deglacial warming in the tropical South China Sea: Resolving seasonality. Quaternary Science Reviews 27, 688-700

- Groeneveld, J., D. Nürnberg, S. Steph, R. Tiedemann, G.J. Reichart, D. Crudeli, L. Reuning. Foraminiferal Mg/Ca increase in the Caribbean during the Pliocene: Western Atlantic Warm Pool formation, salinity influence, or diagenetic overprint? Geochem., Geophys., Geosys. 9, Q01P23, doi:10.1029/2006GC001564

- Groeneveld, J., S. Steph, R. Tiedemann, D. Garbe-Schönberg, D. Nürnberg, A. Sturm. Pliocene development of east-Pacific hydrology as revealed by Mg/Ca analyses on the planktic foraminifer Globigerinoides sacculifer. ODP Scientific Results, Leg 202. Chapter 209

- Nürnberg, D., and J. Groeneveld. Pleistocene variability of the Subtropical Convergence at East Tasman Plateau: Evidence from planktonic foraminiferal Mg/Ca (ODP Site 1172A). Geochemistry, Geophysics, Geosystems, 7-4, Q04P11, doi:10.1029/2005GC000984

- Regenberg, M., D. Nürnberg, S. Steph, J. Groeneveld, W.-Chr. Dullo, D. Garbe-Schönberg, R. Tiedemann. Assessing the dissolution effect on planktonic foraminiferal Mg/Ca: Evidence from Caribbean core-tops. Geochemistry, Geophysics, Geosystems 7

- Steph, S., R. Tiedemann, J. Groeneveld, A. Sturm, D. Nürnberg. Pliocene changes in tropical east Pacific upper ocean stratification: Response to tropical gateways? ODP Scientific Results, Leg 202.

- Steph, S., R. Tiedemann, M. Prange, J. Groeneveld, D. Nürnberg, L. Reuning, M. Schulz, G.H. Haug. Changes in Caribbean surface hydrography during the Pliocene shoaling of the Central American Seaway. Paleoceanography 21, PA4221, doi:10.1029/2004PA001092

- Schmittner, A., M. Sarnthein, H. Kinkel, G. Bartoli, T. Bickert, M. Crucifix, D. Crudeli, J. Groeneveld, F. Kösters, U. Mikolajewicz, C. Millo, J. Reijmer, P. Schäfer, D. Schmidt, B. Schneider, M. Schulz, S. Steph, R. Tiedemann, M. Weinelt, M. Zuvela. Global impact of the Panamanian Seaway Closure. Eos 85-49: 526

- Groeneveld, J.. Effect of the Pliocene closure of the Panamanian Gateway on Caribbean and east Pacific sea surface temperatures and salinities by applying combined Mg/Ca and 18O measurements (5.6-2.2 Ma). PhD-thesis. IFM-Geomar, University of Kiel, Germany. 161 pp

- Christensen, B.A., W. Renema, J. Henderiks, D. De Vleeschouwer, G. Auer, L. Reuning, J. Groeneveld, I. Castaneda, T. Ishiwa, K. Bogus, C.M. McHugh, S.J. Gallagher, C.S. Fulthorpe, and Exp. 356 Scientists. Indonesian Throughflow drove Australian climate from humid Pliocene to arid Pleistocene.

- Kotthoff, U., J. Groeneveld, J.L. Ash, A.S. Fanget, N.Q. Krupinski, O. Peyron, A. Stepanova, J. Warnock, N.A.G.M. van Helmond, B.H. Passey, O.R. Clausen, O. Bennike, E. Andren, W. Granoszewski, T. Andren, H.L. Filipsson, M.S. Seidenkrantz, C.P. Slomp, T. Bauersachs. Reconstructing Holocene temperature and salinity variations in the western Baltic Sea region: multi-proxy comparison from the Little Belt (IODP Expedition 347, Site M0059). Biogeosciences Discussions

- Tangunan, D., K.-H. Baumann, J. Pätzold, R. Henrich, M. Kucera, R. De Pol-Holz, J. Groeneveld. Insolation forcing of coccolithophore productivity in the western tropical Indian Ocean over the last two glacial-interglacial cycles.

* Uni Beni Mellal, Morocco, Apr 2017
Groeneveld, J., et al. Foraminifera: microscopic organisms with many stories to tell (Invited).

* Bjerknes/Uni Bergen, Norway, Aug 2016
Groeneveld, J., et al. and IODP Exp. 356 Scientists. Recent IODP Expedition 356: the Indonesian Throughflow and the Late Cenozoic southern Hadley cell (Invited).

* Bjerknes/Uni Bergen, Norway, Aug 2016
Groeneveld, J., et al. Recent developments in geochemical proxies based on foraminifera (Invited).

* TMS Meeting, Angers, France, June 2016
Groeneveld, J., et al. Recent developments in geochemical proxies based on calcareous microfossils (Keynote)

* Geology Seminar, Lund University, Sweden, June 2015
Groeneveld, J., et al. The final phase of the closure of the Panamanian Gateway (Pliocene, 5-2.5 Ma)

* IODP/ICDP Kolloquium Erlangen, Germany, March 2014
Groeneveld, J., et al., IODP Expedition 347 Baltic Sea Paleoenvironment.

* Pages Open Science Meeting 2013, Goa
Groeneveld, J., S. De Schepper, B. D. A. Naafs, M. J. Head, J. Hennissen, C. Van Renterghem, S. Louwye. Pliocene Marine Isotope Stage (MIS) M2: caused by a hiccup in the closure of the Panamanian Gateway.

* Institute of Geosciences, Sao Paulo, Brazil, April 2012
Groeneveld, J. The final phase of the closure of the Panamanian Gateway during the Pliocene (invited)

* Institute of Oceanography, Sao Paulo, Brazil, April 2012
Groeneveld, J. Reconstructing paleo-sea water temperatures: Mg/Ca in foraminifera (invited)

* Goldschmidt 2011, Prague
Groeneveld, J., C.M. Chiessi, A. Mackensen, R. Tiedemann. Reconstruction of permanent thermocline temperatures in the Atlantic during the Deglaciation.

* Geology Seminar, University of Lund, Nov. 2010
Groeneveld, J.. Trace metals in foraminifera: Routine methods vs new developments (invited)

* Workshop on Pliocene Climate, Bordeaux, Oct. 2009
Groeneveld, J. et al. Marine Isotope Stages (MIS) 100-101: The first modern glacial-interglacial cycle?

* Images Workshop on Evaporative Basins, Tübingen, June 2009
Groeneveld, J. et al. The influence of salinity on foraminiferal Mg/Ca: A case study from the Red Sea (invited)

* IODP/ICDP Kolloquium Potsdam, March 2009
Groeneveld, J., H. DeBey, E.C. Hathorne, S. Steinke. Marine Isotope Stages (MIS) 100-101: The first modern glacial-interglacial cycle?

* TMS Joint Spring Meeting, Tübingen, May 2008
Groeneveld, J. et al. The influence of salinity on foraminiferal Mg/Ca: A case study from the Red Sea (invited)

* Goldschmidt, Vancouver, July 2008
Groeneveld, J. et al. The influence of salinity on foraminiferal Mg/Ca: A case study from the Red Sea