CV

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CURRENT POSITION

2014 – present      Christian Albrechts Universität zu Kiel (Kiel, Germany)

Postdoctoral Research Scientist

&

Columbia University, Department of Earth and Environmental Sciences

adjunct Postdoctoral Research Scientist

 

EDUCATION & EXPERIENCE

2013/14                  Postdoc, Lamont-Doherty Earth Observatory (Columbia University)

2012                        PhD, Marine Geosciences  (Jacobs University) & Biogeosciences (Alfred- Wegener-Institute)

Research adviser: Prof. Jelle Bijma, “The consequences of Ocean Acidification on benthic foraminifera: calcification and potential proxy applications”

2009                        MA, Biological Oceanography (Christian-Albrechts Universität zu Kiel) & GEOMAR

2006                         BA, Biology (Christian-Albrechts Universität zu Kiel)

 

 

PUBLICATIONS

PEER- REVIEWED

2017                       Keul N., Peijnenburg K.T.C.A, Andersen, N., Kitidis V., Goetze, E., Schneider, R., Pteropods are excellent recorders of                                         surface temperature and carbonate ion concentration (accepted at Scientific Reports)

2017                       Manno C., (et al., inkl. Keul N.), Shelled pteropods in peril: Assessing vulnerability in a high CO2 ocean, Ear.-Sci. Rev.,                                      169: 132-145, doi: 10.1016/j.earscirev.2017.04.005.

2016                       Keul N., Langer G., Thoms S., de Nooijer L. J.,  Reichart G.-J, Bijma J., Exploring foraminiferal Sr/Ca as a new                                                        carbonate system proxy, Geochim. Cosmochim. Acta, 202, 374 – 386, doi: 10.1016/j.gca.2016.11.022.

2016                       Langer G., Sadekov A., Thoms S., Keul N., Nehrke G., Mewes A., Greaves M., Misra S., Reichart G.-J., de Nooijer L.,                                 Bijma J., Elderfield H., Sr partitioning in the benthic foraminifera Ammonia aomoriensis and  Amphistegina lessonii,                                         Chemical Geology, 440, 206 – 312, doi:10.1016/j.chemgeo.2016.07.018.

2013                       Nehrke G., Keul N., Langer G., de Nooijer L. J., Bijma J., Meibom A., A new model for biomineralization and                                                        trace-element- signatures of foraminifera tests, Biogeosciences 10, 6759-6767, doi:10.5194/bg-10-6759-2013.

2013                       Keul N., Langer G., de Nooijer L. J., Bijma J., Effect of ocean acidification on the benthic foraminifera Ammonia                                 sp. is caused by a decrease in carbonate ion concentration, Biogeosciences 10, 6185-6198, doi:10.5194/                                                            bg-10-6185-2013.

2013                       Keul N., Langer G., de Nooijer L. J., Nehrke G., Reichart G.-J, Bijma J., Incorporation of uranium in benthic                                                            foraminiferal calcite reflects seawater carbonate ion concentration, Geochem. Geophys. Geosyst., doi:10.1029/                                              2012GC004330.

2012                       Glas, M., Langer, G., Keul, N., Calcification acidifies the microenvironment of a benthic foraminifer (Ammonia sp.),                                 Journal Mar. Biol. Ecol., 424-425, p53-58.

2010                       Keul, N., Morse, J. W., Wanninkhof, R., Gledhill, D. K., Bianchi, T. S., Carbonate Chemistry Dynamics of Surface Waters in                                 the Northern Gulf of Mexico, Aquatic Geochemistry, Vol 16, Nr 3, p337 –351.

NON REFEREED

2016                        Repschläger J., (et al., inkl. Keul N.), NASGAF: North Atlantic Subtropical Gyre and Azores Front Geometry,                                                        Cruise No. MSM58- September 10 – October 07, 2016 – Reykjavik (Island)- Ponta Delgada (Portugal), Maria S. Merian                                       Berichte, 2016.

2016                        Schneider R., (et al., inkl. Keul N.), LISA: Baltic Sea water budget and sediment transport changes since the                                                        Littorina Transgression and their effects on the ecosystem, Cruise No. MSM51-1 – February 01 – February 09,                                                  2016 – Warnemünde (Germany) – Kiel (Germany), Maria S. Merian Berichte, 2016.

2015                        Schneider R., (et al., inkl. Keul N.), PULSE: Paleoclimate- Understanding Labrador Sea, PULSE, Cruise No. MSM45 –                                          August 02 – August 21, 2015 – Nuuk (Greenlad) – Halifax (Canada), Maria S. Merian Berichte, 2015.

2015                        Keul N., Langer G., de Nooijer L. J., Nehrke G., Reichart G.-J, Bijma J., Schneider R., New Carbonate System Proxies:                                  Foram Culturing and Pteropod Potentials, Nova Acta Leopoldina NF 121 408, 305 – 309.

2007                        Hansen I. S., Keul N., Sørensen J. T., Erichsen A., Andersen J. H., Baltic Sea Oxygen Maps 2000- 2006 Balance Interim                                        Report No. 17.

CURRENTLY IN REVIEW

Langer G., Nehrke G., Keul N., de Nooijer L., Littmann S., Kuypers M., Bijma J., Mg and Sr banding in the symbiont-barren foraminifer Ammonmia aomoriensis as revealed by NanoSIMS analyses.

 

 

GRANTS AND FELLOWSHIPS

2015 – 2016              Daimler Benz Stiftung, Postdoctoral Scholarship, 02/2015 (40 000 EUR ) “Double trouble: Tracing the effect                                                       of Ocean Acidification and Ocean Warming in the shells of pteropods and the potential proxy implications

2014 – 2017            Cluster of Excellence-Future Ocean Research Grant 10/2013 (270 000 EUR ) “Double trouble: Tracing the effect                                                 of Ocean Acidification and Ocean Warming in the shells of Arctic Pteropods and the potential proxy implications

2013                         Columbia University Climate Center, Research Grant (10 000 USD) Pteropods, the new foraminifera?                                                                   Establishing an Oxygen isotope- temperature calibration”

2013                         Columbia University Climate Center, Research Grant (10 000 USD) “Double trouble: Tracing the effect of                                                            Ocean Acidification and Ocean Warming in the shells of Arctic Pteropods”

2009 – 2012             AXA Research Fund Doctoral Fellowship (120 000 EUR)

2011                          BioVisionNxt Scholar 2011 (ca. 1000 EUR)

 

 

TALKS

INVITED TALKS 

2016                           Naturalis (Leiden, The Netherlands), “Pteropods, the new foraminifera? Establishing an Oxygen                                                                            isotope-temperature calibration”

2016                           TU Dresden (Dresden, Germany), “Ocean acidification- The evil twin of climate change”

2015                           Daimler und Benz Stiftung (Ladenburg, Germany), “Ocean Acidification- the other CO2 problem”

2015                           Yale University (New Haven, USA), “Culturing foraminifera- biomineralisation insights and new C-system proxies”

2014                           Woods Hole Oceanographic Institution (Falmouth, USA), “Double trouble: tracing Ocean Acidification and                                                           Ocean Warming in the shells of pteropods”

2014                           Christian-Albrechts Universität zu Kiel, Future Ocean Excellence Cluster (Kiel, Germany), “Double trouble:                                                         Tracing the effect of Ocean Acidification and Ocean Warming in the shells of Arctic Pteropods and the potential proxy                                      implications”

2013                           Christian-Albrechts Universität zu Kiel, Institute of Geosciences, (Kiel, Germany), “Carbonate system proxies-                                                    novel insights from culturing”

2012                           Utrecht University, Department of Earth Sciences (Utrecht, The Netherlands), “Impacts of ocean                                                                           acidification on foraminiferal calcification and (trace) element incorporation”

2012                           Cambridge University, Department of Earth Sciences (Cambridge, United Kingdom), “Vesicle dynamics in                                                           foraminifera”

2011                            GEOMAR, Department of Marine Ecology (Kiel, Germany), “Impacts of ocean acidification on                                                                                foraminiferal calcification”

2010                            Interuniversity Institute for Marine Sciences (Eilat, Israel), “The influences of seawater Mg/Ca on Mg/Ca of                                     foraminiferal calcite as a function of temperature ”

 

DEPARTMENTAL TALKS

2014                            Lamont-Doherty Earth Observatory at Columbia University, (Palisades, USA), “Double trouble:                                                                              tracing Ocean Acidification and Ocean Warming in the shells of pteropods ”

2012                            Alfred-Wegener-Institute, Biogeosciences, (Bremerhaven, Germany), “Impacts of ocean                                                                                          acidification on foraminiferal calcification and (trace) element incorporation”

2012                             Jacobs University, School of Engineering and Sciences, (Bremen, Germany), “U/Ca in benthic                                                                                   foraminifera as a proxy for carbonate ion concentration”

2011                             Alfred-Wegener-Institute, Biogeosciences, (Bremerhaven, Germany), “Vesicle dynamics in foraminifera”

2010                             Alfred-Wegener-Institute, Biogeosciences, (Bremerhaven, Germany), “Sr/Ca incorporation in benthic foraminifera”

2009                             Alfred-Wegener-Institute, Biogeosciences, (Bremerhaven, Germany), “Aragonite saturation state                                                                           in the Greater Caribbean Region”

 

 

CONFERENCE PARTICIPATION

2017                             Goldschmidt 2017, August 13 – 18 2017, “NEW CARBONATE SYSTEM PROXIES:                                                                                                                Sr/Ca and U/Ca in Foraminifera” (Oral Presentation)

2017                             European Geosciences Union General Assembly 2017 (EGU 2017), April 23 – 28 2017,                                                                                              “Exploring foraminiferal Sr/Ca as a new carbonate system proxy” (Poster Presentation)

2016                             12th International Conference on Paleoceanography (ICP12), Utrecht, August 29 – September 3 2016,                                                               “Exploring foraminiferal Sr/Ca as a new carbonate system proxy” (Poster Presentation)

2016                             ICES/ PICES 6th Zooplankton Production Symposium, Bergen, May 9 – 13 2016,                                                                                                    “Pteropod abundance in correlation to sea ice- finally some good news for Southern Ocean                                                                                  pteropods? Results from a 20-year sediment trap study” (Oral Presentation)

2015                             Sustainable Ocean Development Symposium, New York, September 28 – 30 2015,                                                                                                   “Assessing marine biodiversity – pteropods as indicator species for climate change” (Poster Presentation)

2015                             XIX Inqua Congress, Nagoya, July 26 – Aug 2 2015,   “Trace elements in pteropods:                                                                                                     proxy development and paleoceanographic implications” (Oral and Poster Presentation)

2015                             Response of Pteropods to ocean acidification and climate change, Workshop, Cambridge, June 1 – 3 2015,                                                       “Double trouble: tracing Ocean Acidification and Ocean Warming in the shells of pteropods ” (Oral Presentation)

2015                             Planktic gastropods: biology, ecology and paleontology, Annual Meeting Malacological Society London, April 1 2015,                                       “Double trouble: tracing Ocean Acidification and Ocean Warming in the shells of pteropods ” (Oral Presentation)

2015                             Deglacial Changes in Ocean Dynamics and Atmospheric CO2, Leopoldina Symposium, March 18- 21 2015,                                       “New Carbonate System Proxies: Foram Culturing and Pteropod Potentials” (Invited Poster Presentation)

2014                             Ocean Sciences Meeting, February 23- 28 2014, “Double Trouble: Tracing the effect of Ocean                                                                                 Acidification and Ocean Warming in the shells of Arctic pteropods” (Oral Presentation)

2013                             American Geophysical Union Fall Meeting, December 9- 13 2013, “Double Trouble: Tracing the                                                                         effect of Ocean Acidification and Ocean Warming in the shells of Arctic pteropods” (Poster Presentation)

2012                              Japan Geoscience Union Meeting, May 20- 25 2012, “Impacts of ocean acidification on                                                                                           foraminiferal calcification” (Oral Presentation)

2011                              American Geophysical Union Fall Meeting, December 5- 9 2011, “Impacts of ocean acidification                                                                            on foraminiferal calcification” (Poster Presentation)

2011                             Bioacid Meeting, September 26- 30 2011, “Seawater endocytosis not related to chamber                                                                                         formation in foraminifera” (Oral Presentation)

2010                             Bioacid Meeting, September 27- 30 2010, “Vesicle dyanmics in foraminifera” (Poster Presentation)

2010                             FORAMS 2010- International Symposium on Foraminifera, September 5- 10 2010, “Vesicle dynamics                                                                   in foraminifera” (Oral Presentation)

2010                             European Geosciences Union General Assembly, May 2- 7 2010, “Impacts of ocean acidification                                                                             on calcification in the benthic foraminifera Ammonia tepida” (Poster Presentation)