Composición y estructura de las comunidades de algas bentónicas de ambientes portuarios: El puerto de Blanes

The species composition and the estructure of the harbour communities of Enteromorpha compressa, Corallina elongate and the internal communities in Blanes harbour (Girona, Espana), have been studied by means of descriptive and analytical data. All the quantitative parameters studied show a decrease of diversity in the more superficial stations of the mouth of the harbour, and also an increasing diversity and a drastic decreasing of the reproduction indices at the more poluted stations.