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Email the author (Login required) Biogeography and biodiversity of gastropod molluscs from the eastern Brazilian continental shelf and slope
DOI: https://doi.org/10.3856/vol37-issue2-fulltext-3
Abstract
Biogeographic distributional patterns of gastropods are proposed based on the species’ geographic and bathymetric distribution. Samples were collected along the Brazilian continental margin between 18° S and 23° S, at 37 stations with depths from 20 m to 1,330 m. The analysis of the biogeographic distribution patterns confirmed the existence of a transitional zone from tropical to subtropical waters in the area of both the continental shelf and slope, suggesting a relationship with water mass circulation. We observed a high species turnover rate between the shelf and slope. The analysis of gastropod species distribution revealed a similar pattern on the shelf and slope and a large difference between shallow and deep-water faunas.
