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Article
Manno, C. , Bednarsek, N. , Tarling, G. A. , Peck, L. , Comeau, S. , Adhikari, D. , Bakker, D. C. E. , Bauerfeind, E. , Bergan, A. J. , Berning, M. I. , Buitenhuis, E. , Burridge, A. K. , Chierici, M. , Flöter, S. , Fransson, A. , Gardner, J. , Howes, E. , Keul, N. , Kimoto, K. , Kohnert, P. , Lawson, G. L. , Lischka, S. , Maas, A. E. , Mekkes, L. , Oakes, R. L. , Pebody, C. , Peijnenburg, K. , Seifert, M. ![]() Shelled pteropods in peril: Assessing vulnerability in a high CO2 ocean ,
Earth-Science Reviews
.
doi:https://doi.org/10.1016/j.earscirev.2017.04.005
, hdl:10013/epic.50773
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Article
Langer, G. , Sadekov, A. , Thoms, S. , Keul, N. , Nehrke, G. ![]() ![]() Sr partitioning in the benthic foraminifera Ammonia aomoriensis and Amphistegina lessonii ,
Chemical Geology,
440
,
pp. 306-312
.
doi:https://doi.org/10.1016/j.chemgeo.2016.07.018
, hdl:10013/epic.48604
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Article
Keul, N. , Langer, G. , Thoms, S. , de Nooijer, L. , Reichart, G. J. and Bijma, J. ![]() Exploring foraminiferal Sr/Ca as a new carbonate system proxy ,
Geochimica et Cosmochimica Acta
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doi:https://doi.org/10.1016/j.gca.2016.11.022
, hdl:10013/epic.49181
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Article
Keul, N. , Langer, G. , de Nooijer, L. J. , Nehrke, G. ![]() ![]() New Carbonate System Proxies: Foram Culturing and Pteropod Potentials ,
Nova Acta Leopoldina NF,
121
(408),
pp. 305-309
.
hdl:10013/epic.45664
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Article
Nehrke, G. ![]() ![]() A new model for biomineralization and trace-element signatures of Foraminifera tests ,
Biogeosciences,
10
,
pp. 6759-6767
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doi:https://doi.org/10.5194/bg-10-6759-2013
, hdl:10013/epic.42554
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Article
Keul, N. , Langer, G. , de Nooijer, L. J. , Nehrke, G. ![]() ![]() Incorporation of uranium in benthic foraminiferal calcite reflects seawater carbonate ion concentration ,
Geochemistry, Geophysics, Geosystems,
14
(1),
pp. 102-111
.
doi:https://doi.org/10.1029/2012GC004330
, hdl:10013/epic.41341
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Article
Keul, N. , Langer, G. , de Nooijer, L. and Bijma, J. ![]() Effect of ocean acidification on the benthic foraminifera Ammonia sp. is caused by a decrease in carbonate ion concentration ,
Biogeosciences,
10
,
pp. 6185-6198
.
doi:https://doi.org/10.5194/bg-10-6185-2013
, hdl:10013/epic.42461
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Article
Glas, M. , Langer, G. and Keul, N.
(2012)
Calcification acidifies the microenvironment of a benthic foraminifer (Ammonia sp.) ,
Journal of Experimental Marine Biology and Ecology,
424-42
,
pp. 53-58
.
doi:https://doi.org/10.1016/j.jembe.2012.05.006
, hdl:10013/epic.39925
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Thesis
-PhD
Keul, N.
(2012)
The consequences of ocean acidification on benthic foraminifera: calcification and potential proxy applications
PhD thesis,
Jacobs University.
hdl:10013/epic.40873
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Conference
-Poster
Keul, N. , Langer, G. , Thoms, S. , de Nooijer, L. J. , Reichart, G. J. and Bijma, J. ![]() Exploring foraminiferal Sr/Ca as a new carbonate system proxy ,
European Geosciences Union General Assembly,
Vienna, Austria,
23 April 2017 - 28 April 2017
.
hdl:10013/epic.4ad2d51b-074b-41fd-8c30-df4eafe9770d
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Conference
-Talk
Keul, N. , Langer, G. , de Nooijer, L. J. , Thoms, S. , Nehrke, G. ![]() ![]() NEW CARBONATE SYSTEM PROXIES: Sr/Ca and U/Ca in Foraminifera ,
Goldschmidt,
Paris, France,
13 August 2017 - 18 August 2017
.
hdl:10013/epic.1541bef7-3b2e-4a0a-b9ea-e0ce38a145c3
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Conference
-Talk
Funcke, A. , de Nooijer, L. , Keul, N. , Langer, G. , Bijma, J. ![]() Impact of Mg2+ and Ca2+ concentrations on calcification in the benthic foraminifer Ammonia tepida ,
Darwin Days,
De Werelt, Lunteren, The Netherlands,
7 February 2011 - 8 February 2011
.
hdl:10013/epic.40706
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Conference
-Poster
Funcke, A. , de Nooijer, L. , Keul, N. and Bijma, J. ![]() Impact of Mg/Ca ratios on calcification in the benthic foraminifer Ammonia tepida ,
DGM Netzwerktreffen "Junge Meeresforschung",
ZMAW Hamburg,
12 June 2010 - 12 June 2010
.
hdl:10013/epic.40709
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PANGAEA Documentation
Keul, N. , Langer, G. , de Nooijer, L. , Nehrke, G. ![]() ![]() Incorporation of uranium in benthic foraminiferal calcite re!ects seawater carbonate ion concentration - Table 1. Carbonate System Parameters, U/Ca, and DU (Calculated Partition Coeffcient) ,
Bremerhaven,
PANGAEA
.
hdl:10013/epic.42535
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