Lake regionalization and diatom metacommunity structuring in tropical South America.

If diatom guilds are analyzed individually, varied effects of environmental and spatial components emerged across lake clusters: (a) for the high‐profile and low‐profile guilds (“weak dispersers”), the spatial component overrode the effect of environmental factors in most lake clusters and showed a decreasing trend of the explained variability with latitude (Figure 5 ); (b) for the motile and planktic guilds (“strong dispersers”), the environmental and spatial components were equally significantly associated with diatom metacommunity structuring in certain lake clusters (Bolivian‐Brazilian lowlands, Peruvian Andes and Bolivian Andes; Figure 5 ).

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