Abstract

Abstract An analysis of the Fucus vesiculosus Linnaeus community has been carried out in polluted and unpolluted sites on the Galician coast (Northwestern Spain). Biological monitors of the community structure parameters such as diversity and biomass, as well as life-forms and functional forms of species, were studied. Pollution affects the dominant species, allowing pioneering and opportunistic algae to grow in the community in polluted locations. In these sites, the latter are the dominant group, and Chlorophyceae is the most important group. In addition, there are common thin sheet-like or finely-branched forms, and ephemerophyceae biological types. A heavy growth of epiphytes, along with low size and low biomass in F. vesiculosus specimens, results in greater specific richness in these locations. There is greater diversity and uniformity in the community of the polluted sites. Structural change brings about changes in the typical composition of the Fucus vesiculosus community. Our study provides evide...

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