[MIS06-P03] Planktic foraminiferal assemblage in the Indian sector of the Southern Ocean since the last glacial
Keywords:Southern Ocean, Planktic foraminifera
Here we performed planktic foraminifera census counts to reconstruct the position of polar front since the last glacial. Sediment samples are collected from DCR-1PC (46°S, 44°E, 2632 m water depth) located on the Del Caño Rise in the Indian sector of the Southern Ocean.
Planktic foraminifera were abundant during the Marine Isotope Stage (MIS) 1 compared to the MIS2. High latitude species such as Globigerina bulloides, Globorotalia inflata, Groborotalia truncatulinoides, Neogloboquadrina pachyderma comprised assemblages during the MIS1, and G. bulloides and N. pachyderma dominated during the MIS2. We show the reconstructed sea surface temperature based on foraminifera census data. The relative abundance of foraminifera species indicative of the Agglus current variation (Peeters et al., 2004) is also investigated. In addition, we examine foraminifera size distribution in relation to the environmental changes since the last glacial.