Fig. 1

Total relative abundance (%) of the marine Roseobacter group (2222 unique 16S rRNA sequences) at the seven NRS between Jan′ 15 and Aug′ 17 at Darwin Harbour (DAR, Red), Yongala (YON, Orange), North Stradbroke Island (NSI, Yellow), Port Hacking Basin (PHB, Aqua), Maria Island (MAI, Dark Blue), Kangaroo Island (KAI, Cornflower Blue) and Rottnest Island (ROT, Green).