Mg/Ca and δ18O in the brackish shallow-water benthic foraminifer Ammonia ‘beccarii’

TitreMg/Ca and δ18O in the brackish shallow-water benthic foraminifer Ammonia ‘beccarii’
Type de publicationArticle de revue
AuteurToyofuku, Takashi, Suzuki, Masayuki, Suga, Hisami, Sakai, Saburo, Suzuki, Atsushi, Ishikawa, Tsuyoshi, de Nooijer, Lennart Jan, Schiebel, Ralf , Kawahata, Hodaka, Kitazato, Hiroshi
TypeArticle scientifique dans une revue à comité de lecture
Pagination113 - 120
Titre de la revueMarine Micropaleontology
Mots-clésBenthic, Foraminifera
Résumé en anglais

Specimens of the benthic foraminifer Ammonia beccarii were cultured in the laboratory in order to determine the relation between temperature and Mg/Ca and oxygen isotope values in their tests. Asexual reproduction in this species provides a large number of juveniles that were allowed to grow into maturity at temperatures ranging from 10 to 27 °C and at salinities ranging from 18 to 33 PSU. The Mg/Ca in a calcite increase exponentially and δ18O decreases linearly with the temperature. Salinity has no significant impact on either Mg/Ca or δ18O. We show how the combination of these two parameters can be used to reconstruct seawater δ18O and temperature in shallow marine habitats.

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