Species richness values for all sample sites across river basin sections.

  
  Part of: Vieira LO, Campos DS, Oliveira RF, South J, Coelho MSP, Paiva MJS, Bragança PHN, Guimarães EC, Katz AM, Brito PS, Santos JP, Ottoni FP (2023) Checklist of the fish fauna of the Munim River Basin, Maranhão, north-eastern Brazil. Biodiversity Data Journal 11: e98632. https://doi.org/10.3897/BDJ.11.e98632