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Diatoms (marine plankton) use elements from seawater to construct their silica-based cell wall.  This presentation will provide a context for modern observations of change by using diatom ecology and the chemistry of the cell wall to investigate past variations in meltwater input to the Antarctic coastal regions.



7 pm 25th January 2017

Large Chemistry Lecture Theatre
Cardiff University

Cardiff University


Dr Jenny Pike

Tiny Fossils, Big Questions: Investigating Past Glacial Melting Around Antarctica

 Colour contours show silicic acid concentration at the 2000 m depth contour (Schlitzer, 2000), illustrating the low silicic acid concentrations in modern northern component waters compared to the silicic acid-rich southern component waters. Map produced using Ocean Data View.