1. Institute of Geosciences; University of Tübingen; Tübingen Germany
2. Europole Mer, European Institute for Marine Studies; Technopole Brest-Iroise; Plouzane France
3. Laboratoire des Bio-Indicateurs Actuels et Fossiles; UFR Sciences; Angers France
4. National Oceanography Centre; University of Southampton; Southampton UK
5. Department of Marine Organic Biogeochemistry; Royal Netherlands Institute for Sea Research; Den Burg Netherlands