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FP5

ALIENS Report Summary

Project ID: EVK3-CT-2001-00062
Funded under: FP5-EESD
Country: Spain

Impact of Sargassum muticum on recipient communities

Changes in the structure of a low intertidal macroalgal assemblage after the arrival of Sargassum muticum have been studied on the North coast of Spain. Those localities invaded at the end of the 80’s by Sargassum muticum showed changes in the abundance of dominant species as well as an increase in species richness and diversity. Localities not invaded remain unaltered.

The results suggest that the arrival of Sargassum muticum has had a negative effect on the native red alga Gelidium spinosum. Indirect benefitial effect on many other species such as Bifurcaria bifurcata and turf species have been observed.

Reported by

Universidad de Oviedo
Catedrático Rodrigo Uría s/n
33701 Oviedo
Spain
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