Spatial distribution of aquatic Oligochaeta in Ilha Grande National Park, Brazil

A preserved aquatic ecosystem in Ilha Grande National Park, Brazil, supports a higher richness of Oligochaeta (Annelida) species compared to long-term studies with more frequent sampling. The study recorded 13 species from two families (Naididae and Tubificidae) across five floodplain lakes, revealing distinct spatial patterns linked to abiotic variables such as granulometric texture. These findings underscore the park's role in preserving benthic invertebrates, offering insights into the ecological dynamics of freshwater environments within UNESCO-listed sites.

Ragonha, F. H., Chiaramonte, J. B., Fontes Junior, H. M., Cunha, E. R. d., Benedito, E., & Takeda, A. M. (2013). Spatial distribution of aquatic Oligochaeta in Ilha Grande National Park, Brazil. Acta Scientiarum. Biological Sciences, 35(1). https://doi.org/10.4025/actascibiolsci.v35i1.10768