Hydrometric levels represented by means of thirteen days before the samplings (Thomaz et al. 2004), between March/93 to February/94 in the Ivinhema River.

 
 
  Part of: Serafim-Júnior M, Perbiche-Neves G, Lansac-Toha F (2019) Environments and macrophytes as main variables controlling rotifers in a river/lake system before Porto Primavera Reservoir construction. Zoologia 36: 1-8. https://doi.org/10.3897/zoologia.36.e24191