Figure 1.
Sampling sites located along the Negro River hydrographical basin, the Brazilian Amazon for (A) phytoplankton samples (n = 114), including tributaries (1–8) and the main channel; and for (B) periphyton samples collected on tributaries (1–9) (n = 129).
Geomorphological reaches (I to V) are presented according to Latrubesse and Franzinelli [24].
Figure 2.
Turnover and nestedness components of beta diversity for the different diatom groups.
Figure 3.
Bray-Curtis similarity of phytoplankton and periphyton samples plotted against geographical distance between sites.
Figure 4.
Bray-Curtis similarity of phytoplanktonic (A-B) and periphytic diatom communities (C-D) plotted against geographical distances between sites. A.
True planktonic species (TP); B. mobile planktonic species (MP); C. Loosely attached mobile taxa (MB); D. Firmly attached species (true benthic TB).