PhD research: Quantifying ecological impacts and changes to ecosystem services as a result of seaweed aquaculture
Seaweed aquaculture is a rapidly growing industry, currently accounting for 20% of global aquaculture biomass. It holds vast potential for innovation and sustainability within various sectors, including: pharmaceuticals, cosmetics, agriculture, and food production. In the UK, the industry is in its infancy. The primary challenge facing the expansion of UK seaweed aquaculture is a lack of understanding of its potential ecological and socioeconomic benefits and impacts. This project aims to address this lack of understanding by collecting data from multiple UK-based seaweed farms, employing diverse methodologies such as:
- Deployment of remote sampling gear (e.g. underwater video) and undertaking of stakeholder surveys to assess the farms’ impacts on local biodiversity, focusing on key fisheries species.
- eDNA sequencing to assess how farm presence affects local microbial assemblages, with a focus on human health and fishery contamination.
- Photorespirometry chamber experiments and sediment core collection to assess seaweed aquaculture’s potential contribution to carbon capture and sequestration.
Additionally, project data, existing literature, and stakeholder insights will be collated and synthesised to create an ecosystem services model. The project’s overall aim is to generate information needed to inform policy and development decisions, facilitating the sustainable expansion of the seaweed industry in the UK.