Fig 3. Benthic reef assemblages of the Fernando de Noronha Archipelago.

(A) Multivariate Regression Tree (MVRT) for benthic assemblages of the Fernando de Noronha Archipelago, off NE Brazil. Environmental drivers for each split are given in the upper portion, while organisms responsible for the split and the relative contribution of the split to total model variation explained are given in the lower portion. (B) Principal Component Analysis (PCA) plot showing separation between the five distinct assemblages identified by the MVRT. (C) Spatial distribution of the five typical assemblages according to depth strata and sampling sites. Codes for sampling stations as in Fig 1.