“…In Brazil, a country recognized as having one of the highest biodiversity of the planet (Myers et al, 2000), most of the studies about microcrustaceans and rotifers biodiversity is from São Paulo, Minas Gerais and Paraná states (Brandorff, 1976;Matsumura-Tundisi, 2005, 2011;Souza-Soares et al, 2011;Silva and Perbiche-Neves, 2017). Meanwhile, although the number of studies about freshwater ecosystems in the Brazilian Northeast have increased in recent years (Diniz et al, 2020), many of them are still difficult to find and access, being found in grey literature as particular libraries and collections (de Melo J unior et al, 2007a;Paranhos et al, 2013). The Brazilian Northeast region has a significant number of lakes (Rosenberg et al, 2000;Lazzaro et al, 2003;Moss, 2009) with different geomorphological origins, human uses and it is subjected to an unique climatic and environmental variations that can act as active ecological filters to zooplankton species selection (Crossetti et al, 2008;Arthaud et al, 2012).…”