INCREASES IN THE ABUNDANCE OF THE INVASIVE BARNACLE ELMINIUS MODESTUS DARWIN IN IRELAND

Abstract:The Australasian barnacle Elminius modestus Darwin was assessed on 89 shores around the Irish coast using abundance scale (ACFOR) methodology. In 2003, E. modestus was present on 43 shores (48%), with a rating of abundant on two shores, and a rating of common on seven shores. Elminius modestus was significantly more abundant on sheltered shores than on moderately exposed or exposed shores. There has been a statistically significant increase in E. modestus since surveys carried out in 1958 and 1995.

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