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Reconstructing past planktic foraminiferal habitats using stable isotope data: a case history for Mediterranean sapropel S5

Rohling, E.J., Sprovieri, M., Cane, T., Casford, J.S.L., Cooke, S., Bouloubassi, I., Emeis, K.C., Schiebel, R., Rogerson, M., Hayes, A., Jorissen, F.J. and Kroon, D. (2004) Reconstructing past planktic foraminiferal habitats using stable isotope data: a case history for Mediterranean sapropel S5 Marine Micropaleontology, 50, (1-2), pp. 89-123. (doi:10.1016/S0377-8398(03)00068-9).

Record type: Article


A high-resolution stable O and C isotope study is undertaken on all planktic foraminiferal species that are reasonably continuous through an Eemian sapropel S5 from the western side of the eastern Mediterranean. The data are considered within a context of high-resolution isotope records for two further S5 sapropels from the central and easternmost sectors of the basin, alkenone-based sea surface temperature records for all three sapropels, and planktic foraminiferal abundance records for the same sample sets through all three sapropels. Results are compared with similar data for Holocene sapropel S1. The adopted approach allows distinction between species that are most suitable to assess overall changes in the climatic/hydrographic state of the basin, including depth-related differentiations and the main seasonal developments, and species that are most affected by variable biological controls or local/regional and transient physico-chemical forcings. It is found that a-priori assumptions about certain species' palaeohabitats, based on modern habitat observations, may become biased when non-analogue conditions develop. In the case of Mediterranean sapropel S5, these consisted of enhanced freshwater dilution, elevated productivity, shoaling of the pycnocline between intermediate and surface waters, and stagnation of the subsurface circulation. Under these conditions, some species are found to 'shift' into habitat settings that differ considerably from those occupied today. The present multiple-species approach can identify such 'anomalous responses', and thus offers a sound background for further shell-chemistry investigations and quantitative interpretation of the isotopic profiles. We capitalise on the latter potential, and offer the first quantitative estimates of monsoon flooding into the Mediterranean during the deposition of Eemian sapropel S5

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Published date: 2004
Keywords: planktonic foraminifera, isotopes, mediterranean, sapropel, palaeohabitats


Local EPrints ID: 1353
ISSN: 0377-8398
PURE UUID: 9e4355fc-7de1-44c1-8f67-44e55c6e4ab1
ORCID for E.J. Rohling: ORCID iD

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Date deposited: 20 Apr 2004
Last modified: 17 Jul 2017 17:16

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Author: E.J. Rohling ORCID iD
Author: M. Sprovieri
Author: T. Cane
Author: J.S.L. Casford
Author: S. Cooke
Author: I. Bouloubassi
Author: K.C. Emeis
Author: R. Schiebel
Author: M. Rogerson
Author: A. Hayes
Author: F.J. Jorissen
Author: D. Kroon

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