Data/hora: 16/06/2024 09:17:41

Provedor de dados: | Zoologia
País: | Brazil
Título: | Spatial distribution of mollusks in the intertidal zone of sheltered beaches in southeastern of Brazil
Autores: | Arruda,Eliane P. de; Amaral,A. Cecilia Z.
Data: | 2003-06-01
Ano: | 2003
Palavras-chave: | Caraguatatuba Bay; Intertidal zone; Mollusk; São Sebastião Channel; Sheltered beach; Spatial distribution.
Resumo: | The spatial distribution of mollusks in the intertidal zone was examined monthly from August 1995 through July 1997, in Enseada, Barra Velha and Araçá beaches in southeastern of Brazil. One study sector was selected in Enseada and Barra Velha, and two sectors in Araçá (Araçá I and Araçá II). The sectors were 10 m wide and equivalent in length to the width of the intertidal zone. Each sector was divided into three horizontal levels: lower, middle and upper, where the samples were taken with a cylinder corer with a base area of 0.16 m². In order to characterize the intertidal environment in these areas, some environmental variables were analyzed. In general, the mollusks were distributed in the sectors as follows: Enseada - Olivella minuta (Link, 1807) in the lower level and Tagelus plebeius (Lightfoot, 1786) in the upper level; Araçá I - O. minuta in the lower level, Tellina lineata Turton, 1819 and Anomalocardia brasiliana (Gmelin, 1791) in the middle levels; Araçá II - Cerithium atratum (Born, 1778) in the lower level, O. minuta in the lower and middle levels, and A. brasiliana and Corbula caribaea Orbigny, 1842 in the middle level; Barra Velha - Tagelus divisus (Spengler, 1794), Lucina pectinata (Gmelin, 1791) and Tellina versicolor De Kay, 1843 in the lower level, and A. brasiliana and Macoma constricta (Brugüìere, 1792) in the upper level. The intertidal zone of the study sectors could be divided into two biological zones: the upper zone, where T. plebeius, A. brasiliana and M. constricta were more abundant; and the lower zone, where O. minuta, C. atratum, T. lineata, T. versicolor, C. caribaea, T. divisus and L. pectinata were abundant.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000200020
Editor: | Sociedade Brasileira de Zoologia
Relação: | 10.1590/S0101-81752003000200020
Formato: | text/html
Fonte: | Revista Brasileira de Zoologia  v.20 n.2 2003
Fonte: | info:eu-repo/semantics/openAccess