1. Leibniz Centre for Tropical Marine Ecology - ZMT; Fahrenheitstraße 6 28359 Bremen Germany
2. Institute of Ecology; Universität Bremen; Bibliothekstraße 1 28359 Bremen Germany
3. School of Marine Science & Technology; Newcastle University; Ridley Building Claremont Road Newcastle Upon Tyne Tyne and Wear NE1 7RU UK
4. Institute of Marine Sciences; University of Dar es Salaam; P.O. Box 668 Zanzibar Tanzania
5. Institute for Marine Resources - imare GmbH; Bussestr. 27 Bremerhaven 27570 Germany