Biogeography of Brazilian prosobranch gastropods and their Atlantic relationships

Research identifies four distinct biogeographical regions along the Brazilian coast based on prosobranch gastropod distributions, revealing gradual latitudinal variation in marine assemblages. The study proposes the Guyanese Province (Amapá), North-eastern Brazil Area (Amazon to Bahia), South-eastern Brazil Area (Bahia to Santa Catarina), and Argentinian Province (Rio Grande do Sul). Coastal regions host richer gastropod diversity than oceanic islands, which exhibit unique species compositions while sharing some with other environments. The analysis used secondary data and collection records, applying Sørensen, Simpson, and Ochiai similarity indices alongside ordination techniques to map faunal relationships across the Western Atlantic.

Barroso, C. X., Lotufo, T. M. d. C., & Matthews‐Cascon, H. (2016). Biogeography of Brazilian prosobranch gastropods and their Atlantic relationships. Journal of Biogeography, 43(12), 2477–2488. Portico. https://doi.org/10.1111/jbi.12821