Aquatic invasive species pose a growing threat to biodiversity, fisheries, and ecosystem health. My PhD focuses on two high-impact invaders at different stages of invasion: zebra mussels in Northern Ireland’s freshwater systems, and invasive lionfish in the Caribbean, which are expected to expand into UK waters as sea temperatures rise.
In Northern Ireland, zebra mussels have already disrupted fisheries, aquaculture, and water infrastructure, leading to fish stocking suspensions and major economic losses. In contrast, lionfish have not yet reached UK waters, but their rapid spread elsewhere makes them a serious future biosecurity risk. By studying lionfish in Honduras, where they are already well established, this project provides a valuable opportunity to prepare for potential invasion before it occurs.
My research combines environmental DNA (eDNA), dietary analysis, and spatial modelling to develop practical, site-specific management tools. In Honduras, this will help prioritise reef areas where lionfish removal can support coral recovery. In Northern Ireland, it will support evidence-based decisions on fish stocking and biosecurity.
By linking tropical and temperate systems, this project aims to improve early detection, targeted intervention, and long-term invasive species management under climate change.
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