Modelling marine ecosystems as a discipline in Earth Science

Faced with the imperatives of sustainable development, Earth Science must open to the study of ecosystems and their interactions with a multiscale geophysical environment. The indispensable development of interdisciplinary Earth Science models requires that the crafts and skills of physicists, chemists and biologists merge and cross-fertilize, with often a long way to go for each discipline to win over the others. This paper contains the reflections, queries and suggestions of a marine hydrodynamicist trying to develop coupled physical, chemical and biological marine models and negotiating admittance in the Biogeochemistry Club.