Articles | Volume 16, issue 6
Research article
30 Nov 2020
Research article |  | 30 Nov 2020

Evaluation of oxygen isotopes and trace elements in planktonic foraminifera from the Mediterranean Sea as recorders of seawater oxygen isotopes and salinity

Linda K. Dämmer, Lennart de Nooijer, Erik van Sebille, Jan G. Haak, and Gert-Jan Reichart

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Cited articles

Allen, K. A., Hönisch, B., Eggins, S. M., Haynes, L. L., Rosenthal, Y., and Yu, J.: Trace element proxies for surface ocean conditions: A synthesis of culture calibrations with planktic foraminifera, Geochim. Cosmochim. Ac., 193, 197–221,, 2016. 
Allison, N., Austin, H., Austin, W., and Paterson, D. M.: Effects of seawater pH and calcification rate on test Mg  Ca and Sr  Ca in cultured individuals of the benthic, calcitic foraminifera Elphidium williamsoni, Chem. Geol., 289, 171–178,, 2011. 
Anand, P., Elderfield, H., and Conte, M. H.: Calibration of Mg  Ca thermometry in planktonic foraminifera from a sediment trap time series, Paleoceanography, 18, 1050,, 2003. 
Aurahs, R., Treis, Y., Darling, K., and Kucera, M.: A revised taxonomic and phylogenetic concept for the planktonic foraminifer species Globigerinoides ruber based on molecular and morphometric evidence, Mar. Micropaleontol., 79, 1–14,, 2011. 
Avnaim-Katav, S., Herut, B., Rahav, E., Katz, T., Weinstein, Y., Alkalay, R., Berman-Frank, I., Zlatkin, O., and Almogi-Labin, A.: Sediment trap and deep sea coretop sediments as tracers of recent changes in planktonic foraminifera assemblages in the southeastern ultra-oligotrophic Levantine Basin, Deep-Sea Res. Pt. II, 171, 104669,, 2020. 
Short summary
The compositions of foraminifera shells often vary with environmental parameters such as temperature or salinity; thus, they can be used as proxies for these environmental variables. Often a single proxy is influenced by more than one parameter. Here, we show that while salinity impacts shell Na / Ca, temperature has no effect. We also show that the combination of different proxies (Mg / Ca and δ18O) to reconstruct salinity does not seem to work as previously thought.