Effects of iron on the elemental stoichiometry during EIFEX and in the diatoms Fragilariopsis kerguelensis and Chaetoceros dichaeta L. J. Hoffmann, I. Peeken, and K. Lochte Leibniz Institute of Marine Science at the University of Kiel, Duesternbrooker Weg 20, 24105 Kiel, Germany Received: 15 January 2007 – Accepted: 22 January 2007 – Published: 31 January 2007 Correspondence to: L. J. Hoffmann ...