Catherine Ribeiro, Adriana Lopes dos Santos, Dominique, Marie, Frederico Brandini, Daniel Vaulot Station Biologique de Roscoff, UPMC et CNRS, France Universidade de São Paulo, Brasil Symbiosis between nitrogen-fixing bacteria and eukaryotes on the continental shelf of Brazil
Conclusion On the shelf off Brazil • Two major types photosynthetic eukaryotic communities : – Braarudosphaeraceae – Ostreococcus + Bathycoccus • Nitrogen fixers – UCYN-A is dominant nitrogen fixer : A1, A2, A3, A4 • Network analysis – Recover A1 and A2 associations – A4 could have same host than A2 (Braarudosphaera) – A3 ?