Geochemical composition of Baltic benthic foraminifera collected and cultured over a large salinity gradient.

Filipsson, Helena L.Lund University,Lunds universitet,Kvartärgeologi,Geologiska institutionen,Naturvetenskapliga fakulteten,Quaternary Sciences,Department of Geology,Faculty of Science (author)

Some of the most significant challenges in paleoclimate research arise from the need to both understand and reduce the uncertainty associated with proxies for climate reconstructions. These challenges were further highlighted in connection with the IODP Exp.347 Baltic Sea Paleoenvironment. We have investigated temperature and salinity proxies through a combination of field-and culture-based benthic foraminiferal samplesfrom the Baltic(sal. 14)-Kattegat(sal. 32), together with genetic characterization. Two long-term experiments at twotemperatures and three salinities were performed. We present foraminiferal assemblage,trace element (Mg/Ca, Ba/Ca, Mn/Ca),and stable O and C isotope results from these locations, including LA-ICP-MS data from cultured specimens. Furthermore, specimens of Elphidium and Ammonia were genetically characterized; the results indicate that the same genetic type of Elphidiumis found in both salinity regimes, but that the Ammoniagenetic types differ depending on the prevailing salinity regime.

Groeneveld, JeroenUniversity of Bremen(Swepub:lu)geol-jgl (author)
Austin, William E NUniversity of St Andrews,Scottish Association for Marine Science (author)
Darling, Kate F.University of St Andrews,University of Edinburgh (author)
Quintana Krupinski, Nadine BLund University,Lunds universitet,Kvartärgeologi,Geologiska institutionen,Naturvetenskapliga fakulteten,Quaternary Sciences,Department of Geology,Faculty of Science(Swepub:lu)geol-nkp (author)
Bird, ClareUniversity of Edinburgh,University of Stirling (author)
McCarthy, DavidUniversity of St Andrews (author)
Hathorne, EdwardGEOMAR Helmholtz Centre for Ocean Research Kiel (author)
Schweizer, MagaliAngers University,University of Edinburgh (author)
KvartärgeologiGeologiska institutionen (creator_code:org_t)

By the author/editor: Filipsson, Helen ...; Groeneveld, Jero ...; Austin, William ...; Darling, Kate F.; Quintana Krupins ...; Bird, Clare; show more...; McCarthy, David; Hathorne, Edward; Schweizer, Magal ...; show less...

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