Spatiotemporal variation of the crustacean fauna in a Halodule wrightii meadow of northeastern Brazil

Kcrishna Vilanova de Souza Barros, Jesser Fidelis de Souza-Filho, Ricardo José Paiva, Catarina de Lurdes Silva, Alexandre Oliveira de Almeida, Cristina de Almeida Rocha-Barreira

Resumo


The high abundance and frequency of crustaceans in seagrass meadows make them important tools to understand the dynamics of this ecosystem. The aim of this paper is to characterise the spatiotemporal distribution of the crustacean fauna in a meadow of Halodule wrightii Ascherson. From April 2006 to July 2007, we performed fifteen samplings, each with five sectioned replicates in belowground and aboveground. Cumaceans and the amphipod Hyale media had a higher frequency, density, and dominance than the other species, in both strata. A gradual change in the crustacean community was observed according to seasonality, occurring first in the aboveground stratum, where the seasonal variation was also greater. A clear vertical distribution of the species was not observed, which could be related to the local hydrodynamics and the thin layer of the sediment used in this study.



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