Author/Authors :
Toyofuku، نويسنده , , Takashi and Suzuki، نويسنده , , Masayuki and Suga، نويسنده , , Hisami and Sakai، نويسنده , , Saburo and Suzuki، نويسنده , , Atsushi and Ishikawa، نويسنده , , Tsuyoshi and de Nooijer، نويسنده , , Lennart Jan and Schiebel، نويسنده , , Ralf and Kawahata، نويسنده , , Hodaka and Kitazato، نويسنده , , Hiroshi، نويسنده ,
Abstract :
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.
Keywords :
benthic foraminifera , Mg/Ca , Culture experiment , Salinity , ?18O , Temperature , Shallow water environment , Brackish water
