Extended Data Fig. 8: Ordination plots showing the correlations between MP mass and northern fulmar versus Cory’s shearwater GIT microbial beta diversity.
From: Current levels of microplastic pollution impact wild seabird gut microbiomes

PCoA plots with a,b weighted UniFrac distances, c,d unweighted UniFrac distances, and e,f PCA plots with Euclidean distances (Aitchison’s approach) illustrate the effects of MP mass on GIT microbial beta diversity in northern fulmars (a,c,e; n = 27) versus Cory’s shearwaters (b,d,f; n = 58). Each dot represents a microbiome sample colored on a continuous scale by the proportion of MP mass (MP mass /individual bird mass) and magenta arrows show the direction of the MP effects.