 Bacterial strains, media and batch cultures We used the wildtype strain Vibrio natriegens ATCC 14048 and Alteromonas macleodii sp. 4B03 non-clumping variant isolated from marine particles 8. Strains were cultured in Marine Broth MB, Difco 2216 and grown overnight at 25 C. In total, 1 ml of cell culture was centrifuged 13,000 rpm for 2 min in a 1.5 ml ... Changes in interactions over ecological time scales influence... 