Temporal and spatial variation of rocky shores intertidal benthic communities in Southeast Brazil

Iheringia. Série Zoologia

Gabriela C. Zamprogno²  Flavio C. Fernandes¹  Luiz L. Fernandes¹ 

[1] ,Universidade Federal do Espírito Santo Programa de Pós-Graduação em Ciências Biológicas Vitória ES ,Brazil

关键词: Midlittoral;    wave exposure;    benthos;    Espírito Santo;    Médio litoral;    exposição às ondas;    bentos;    Espírito Santo;   

DOI  :  10.1590/S0073-47212012000400003

来源: SciELO

【 摘 要 】

The relationships between environmental factors and temporal and spatial variations of benthic communities of three rocky shores of the state of Espírito Santo, Southeast Brazil, were studied. Sampling was conducted every three months, from August 2006 to May 2007, using intersection points. Chthamalus bisinuatus (Pilsbry, 1916) (Crustacea) and Brachidontes spp. (Mollusca) were the most abundant taxa, occupying the upper level of the intertidal zone of the rocky shore. The species richness was higher at the lower levels. The invasive species Isognomon bicolor (C. B. Adams, 1845) (Mollusca) occurred at low densities in the studied areas. The clustering analysis dendrogram indicated a separation of communities based on exposed and sheltered areas. According to the variance analyses, the communities were significantly different among the studied areas and seasons. The extent of wave exposure and shore slope influenced the species variability. The Setibão site showed the highest diversity and richness, most likely due to greater wave exposure. The communities showed greater variation in the lower levels where environmental conditions were less severe, relative to the other levels.

【 授权许可】

CC BY   
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