Figure S1 - Particulate Organic Matter Distribution along the Lower Amazon River: Addressing Aquatic Ecology Concepts Using Fatty Acids

Diagram showing step-by-step statistical methodology (see Material and Methods). In a) for the PCNM, dij is the distance between sites i and j; max, maximum distance between two successive sites; PCoA, principal coordinate analysis, FS, forward selection allowing the selection of significant eigenvectors and PC axes and PCA, principal components analysis. (DOC)