Project background
Scientific Background
The polar regions are unique environments, regulating global climate whilst experiencing the fastest rate of climate change on Earth. Consequently ‘geoengineering tools’, such as artificial sea ice thickening, are being actively researched to buy time for global decarbonisation.
However, as yet there are no standardised ways to determine how these tools may impact the environment. ECO-ICE is a multidisciplinary project aimed to address this knowledge gap in polar regions, using ice thickening as an example to create a framework for assessing the ecological risk of geoengineering tools.
Research Methodology
Ice is artificially thickened by pumping seawater onto the surface, however this new frozen layer is often highly reflective and blue in colour, potentially filtering out a blue light, key wavelength for photosynthesisers underneath the sea ice. This research experience placement will use highly controlled chemostats to conduct mesocosm experiments exploring the impact of a changing light field on the physiology of under-ice phytoplankton. It will contribute to the main goal of ECO-ICE, helping provide a comprehensive impact assessment of geoengineering proposals in polar marine environments. By exploring the impacts filtering out different wavelengths of light on phytoplankton, this work will provide key information on any potential harm to the base of the Arctic marine food web, whilst providing essential observational data to feed into larger scale modelling.