University of Stirling In partnership with Centre for Ecology & Hydrology
From catchment to sea: Changes in particles characteristics using novel in situ and space technologies
Supervision: E. Spyrakos, A. Tyler, P. Hunter, M. Bowes, G. Old
This studentship provides an exceptional opportunity for an applicant to join a team with internationally recognised expertise in (optical) aquatic biogeochemistry and Earth observation. The candidate will primarily be based at Stirling, but will collaborate and spend periods of time working with scientists from the Centre for Ecology and Hydrology (CEH).
Background and tasks: The Earth's surface waters are a fundamental resource and encompass a broad range of ecosystems that are core to global biogeochemical cycling and food and energy production. River-sea systems comprise river catchments, estuaries, lagoons and near-shore marine environments and are important interfaces between continents and seas. Processes in these systems influence the flux of particulate and dissolved materials from the catchment to the sea. Nevertheless, rivers and seas have been modified progressively over the years with environmental consequences, which are cumulative and pervasive and can lead to extreme impactful events including drought and flood.
Knowledge of particle size distributions and composition in these highly complex systems is crucial for understanding many facets of ecosystem structure, variability and change, such as sediment fluxes, phytoplankton dynamics, that incluence the underwater light climate and biogeochemical cycling in addition to geomorphological change.
Recent developments in sensor technology (in-situ and space-borne) enable a more detailed characterisation of aquatic systems at high temporal frequency and large scales. For example, laser-diffraction based sensors now allow the in-situ determination of particle size and concentration in aquatic systems, while electron microscopy coupled with energy dispersive capabilities can adequately characterise submicron particle populations in the lab. Flow cytometry is able to rapidly characterise and quantify phytoplankton / bacterioplankton communities. In parallel, Earth observation (EO) satellite missions such as ESA Sentinel-2, -3 offer a great opportunity of basin-scale monitoring of water properties over the surface water continuum. In order to enable the use of the abovementioned technologies for characterising suspended particles in river-sea systems, methodologies need to be tested, refined and/or advanced.
The main aim of this PhD is twofold: 1) to understand sediment sources and their conveyance through river-sea systems; and 2) to establish functional relationships between optical properties and sediment characteristics in these systems.
This PhD will focus on two contrasting UK river-sea systems:
The methodology will mainly include:
The studentship: The student will have access to state-of-the-art instrumentation and facilities and will receive specialist training through IAPETUS2 training package, Stirling Graduate Research School and other targeted courses.
This is a competition funded PhD studentship as part of the NERC Doctoral Training Partnership IAPETUS2 (http://www.iapetus.ac.uk/aboutstudentships/). A first class undergraduate degree (or equivalent, typically >70 % or >8 for different grade points systems) and/or MSc with distinction is recommended. Publication of articles, participation in academic conferences and other similar activities will be an advantage. For the successful candidate, the studentship will cover tuition fees and provide a stipend for UK students only (please see NERC funding rules for EU citizens). International candidates are not eligible to be considered and where an candidate from another EU country has not been resident in the UK for 3 years or more prior to the commencement of their studies with IAPETUS2, they will only be eligible for a fees-only studentship.
To Apply: The deadline for applications is Jan 18th 2019 at 16:00. However, serious applicants are strongly advised to get in touch well in advance with Dr Spyrakos: email@example.com to discuss their application. Informal enquiries are welcome. By this deadline applicants must have submitted a formal application through the Stirling University online application system: https://www.stir.ac.uk/research/research-degrees/how-to-apply-for-our-research-degrees/ - Programme Biological and Environmental Sciences.
Related Subjects: Aquatic Sciences; Environmental Science; Geophysics; Biology; Geography; Remote Sensing; Marine Sciences; Limnology; Geo informatics