Abstract
This paper examines the influence of dune morphological evolution on plant species diversity and composition on the Magheramore dune system, Donegal, north-west Ireland. It aims to demonstrate the need for understanding of local geomorphological factors and their affect on ecological processes for the enhanced conservation management of coastal dunes. Vegetation surveys and cluster analysis of species associations, in combination with GIS analysis focused on two prograding dune sites within the Magheramore system. Contrasting geomorphic evolution over similar timescales has imposed site-specific environmental conditions that have had a direct impact on the range of plant species communities present. Cluster analysis revealed 5 main species community types that defined specific dune habitats, the organisation of which is strongly influenced by geomorphic evolution. This study demonstrates the importance of geomorphic evolution and morphological heterogeneity in habitat and species diversity.
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