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Protist Biodiversity and Biogeography in Lakes From Four Brazilian River–Floodplain Systems

Guillaume Lentendu,P. R. B. Buosi,A. Cabral,Bianca Trevizan Segovia,Bianca Ramos Meira,F. Lansac‐Tôha,L. Velho,C. Ritter,Micah Dunthorn

Published 2019 in Journal of Eukaryotic Microbiology

ABSTRACT

The biodiversity and biogeography of protists inhabiting many ecosystems have been intensely studied using different sequencing approaches, but tropical ecosystems are relatively under‐studied. Here, we sampled planktonic waters from 32 lakes associated with four different river–floodplains systems in Brazil, and sequenced the DNA using a metabarcoding approach with general eukaryotic primers. The lakes were dominated by the largely free‐living Discoba (mostly the Euglenida), Ciliophora, and Ochrophyta. There was low community similarity between lakes even within the same river–floodplain. The protists inhabiting these floodplain systems comprise part of the large and relatively undiscovered diversity in the tropics.

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