Fig. 2From: Epiphytic common core bacteria in the microbiomes of co-located green (Ulva), brown (Saccharina) and red (Grateloupia, Gelidium) macroalgaePrincipal coordinate analysis (PCoA) plots of Bray–Curtis similarities of samples and seasons calculated using unweighted UniFrac distances (each point corresponds to an individual sample). a macroalgal samples (n = 60), surrounding seawater (n = 15), and surrounding sediment (n = 17). b only macroalgal samples (n = 60). c only non-core macroalgal samples (n = 60). Details are provided in Additional file 3Back to article page