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PhD Studentship: Seagrass as a Natural Defence: Microbiomes, Pathogens and Coastal Water Quality in the Face of Environmental Change University of Exeter in United Kingdom
Degree Level
PhD
Field of study
Environmental Science
Funding
Available
Deadline
Jan 7, 2027
Country
United Kingdom
University
University of Exeter
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About this position
This PhD studentship investigates whether seagrass meadows can act as a natural defence against waterborne bacterial pathogens in coastal environments. The project asks whether Zostera marina can reduce pathogen abundance or persistence, whether its associated microbiome helps produce that effect, and how these relationships change under environmental change and episodic pollution.
The research combines field observations with mechanistic experiments under controlled conditions. The student will optimise seagrass cultivation in bespoke recirculating mesocosms inside Exeter’s Containment Level 2 Global Meteorological Simulator, enabling tightly controlled manipulation of aquatic conditions and environmentally relevant pathogens. Experiments will compare pathogen persistence with and without seagrass and test responses to gradual changes and acute water-quality perturbations.
A major part of the project will use quantitative microbiology and profiling of the leaf, root and rhizosphere microbiomes to investigate possible mechanisms. The project also includes field studies across contrasting seagrass environments to test laboratory findings under natural conditions and generate new hypotheses for later experiments.
The studentship sits within a broader interdisciplinary partnership spanning pathogen ecology and controlled-environment experimentation at Exeter-Streatham, seagrass field ecology and water quality at Exeter-Penryn, and expertise in seagrass conservation, cultivation and restoration through the Ocean Conservation Trust, alongside marine pollution and biogeochemistry expertise from PML. The student will gain training across seagrass cultivation, field ecology, pathogen microbiology, microbial community analysis, mesocosm experimentation, experimental design, data analysis and scientific writing.
Overall, this is a field-to-laboratory PhD focused on uncovering how seagrass, its microbiome and coastal environmental change interact to shape water quality.
Funding details
Available
How to apply
Apply through the University of Exeter funding page using the application link provided. Review the studentship details and submit the required application before the deadline.
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