PhD research
Working title: New Tools for (really) Old Marine Habitats: Designing a Multi-Disciplinary Framework for Maerl Research and Restoration
Maerl beds, formed by free-living coralline algae, are among the most structurally and ecologically valuable marine habitats in UK and European waters. They provide three-dimensional nursery grounds for fish and shellfish of commercial importance and contribute to carbon sequestration, yet remain poorly understood despite their designation as priority habitats under UK and EU legislation. While previous research has focused on mapping and broad ecological descriptions, less is known about the biological resilience of Maerl-forming species and the biodiversity they support under increasing environmental pressure.
My PhD takes a multi-scale approach to address this gap. Through controlled aquarium experiments, I am testing the impacts of key anthropogenic stressors (e.g. temperature change, nutrient loading, and sedimentation) on living Maerl, assessing physiological and ecological responses. These experiments are paired with field surveys using environmental DNA (eDNA) and RNA (eRNA) to characterise associated biodiversity in situ, providing insights into both community structure and the dynamics of active biological processes. By combining lab and field methods, my work aims to link mechanistic stressor responses with real-world biodiversity patterns.
In addition, particle tracking models will be implemented to explore dispersal and connectivity between maërl habitats, helping to understand recruitment and recovery potential. Together, these approaches will generate novel insights into Maerl ecosystem functioning, biodiversity support, and resilience. The ultimate goal is to provide evidence-based recommendations for my project partners to inform conservation policy, management strategies, and restoration initiatives across UK Maerl sites.