CONCHOLOGICAL SURVEY AT THE BARRA DO UNA, MUNICIPALITY OF PERUÍBE, BRAZIL

Karine Soares de Oliveira, Gabriela Campos Zeineddine, Milena Ramires, Walter Barrela

Abstract


The study aimed to identify the mollusk shells that occur in the intertidal region of Barra do Una beach and which are their most abundant groups. Sampling was performed using a single transect, which was 3 meters wide from the intertidal region and 2 km long. All empty shells with a length above 2 cm were collected. Species richness, diversity and dominance were defined using the Shannon-Wienner and Simpson Diversity Indexes. 797 individuals were sampled to the fullest extent and entire sample was classified into 10 families and distributed into 15 genera, where the highest abundance was observed by individuals of the species Eurytellina punicea, and the lowest abundance was by Iphigenia brasiliana. The diversity index indicating that the beach has a diversity of species, without much interference from rare species. Due to the biotic and abiotic factors presented in Barra do Una beach, the organisms presented a greater diversity, compared to other beaches already studied. In addition, the work presented the first conchological study carried out on Barra do Una beach, located within a Sustainable Development Reserve.


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