Articles | Volume 12, issue 6
Biogeosciences, 12, 1733–1752, 2015
Biogeosciences, 12, 1733–1752, 2015
Research article
17 Mar 2015
Research article | 17 Mar 2015

Oxygen and carbon isotope composition of modern planktic foraminifera and near-surface waters in the Fram Strait (Arctic Ocean) – a case study

T. Pados et al.

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Cited articles

Alexander, V.: Interrelationships between the seasonal sea ice and biological regimes, Cold Reg. Sci. Technol., 2, 157–178, 1980.
Bauch, D., Carsens, J., and Wefer, G.: Oxygen isotope composition of living Neogloboquadrina pachyderma (sin.) in the Arctic Ocean, Earth Planet. Sc. Lett., 146, 47–58, 1997.
Bauch, D., Carstens, J., Wefer, G., and Thiede, J.: The imprint of anthropogenic CO2 in the Arctic Ocean: evidence from planktic δ13C data from water column and sediment surfaces, Deep-Sea Res. Pt. II., 47, 1791–1808, 2000.
Bauch, D., Erlenkeuser, H., Winckler, G., Pavlova, G., and Thiede, J.: Carbon isotopes and habitat of polar planktic foraminifera in the Okhotsk Sea: the 'carbonate ion effect' under natural conditions, Mar. Micropaleontol., 45, 83–99, 2002.
Bemis, B. E., Spero, H. J., Bijma, J., and Lea, D. W.: Reevaluation of the oxygen isotopic composition of planktonic foraminifera: Experimental results and revised paleotemperature equations, Paleoceanography, 13, 150–160, 1998.
Short summary
Fossil planktic foraminifera and their geochemical composition are commonly used proxies in palaeoceanography. Our study with living specimens revealed that in the Fram Strait both Neogloboquadrina pachyderma and Turborotalita quinqueloba from the water column have lower δ18O and δ13C values than inorganically precipitated calcite/fossil tests from the sediment surface. These offsets indicate biological influence during calcification and a change of water column properties in the recent past.
Final-revised paper