EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Photosynthesis - Solar Induced Fluorescence relationships in polar ecosystems

Kadmiel Maseyk1, Holly Croft2, Cheryl Rogers3, Terenzio Zenone4, Walter Oechel5, and Donnatella Zona5
Kadmiel Maseyk et al.
  • 1School of Environment, Earth and Ecosystem Sciences, The Open University, Milton Keynes, United Kingdom (
  • 2Department of Plant and Animal Sciences, The University of Sheffield, Sheffield, United Kingdom
  • 3Department of Geography, University of Toronto, Toronto, Canada
  • 4College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom
  • 5Center for Climate and Sustainability Studies, San Diego State University, San Diego, USA

The rapid warming of polar regions is having a demonstrable impact on ecosystem composition and there is a pressing need to understand the carbon cycle implications of these changes. A promising approach for investigating photosynthesis at ecosystem and regional scales involves the remote sensing of Solar Induced Fluorescence (SIF). However, ground-validation of SIF and its association with carbon assimilation and other ecophysiological parameters is largely missing from the polar regions. We will present results of measurements of ground-level SIF and hyperspectral reflectance that were coupled with CO2 exchange measurements in three contrasting polar regions: shrub and bog ecosystems in northern Sweden, wet coastal tundra in Alaska and moss turf in Antarctica. We show good agreement between SIF and photosynthesis across scales, from leaf-level to surface fluxes, but with variable relationships between ecosystem types. Our results show strong potential for using SIF to help understand the impact of change in these regions.

How to cite: Maseyk, K., Croft, H., Rogers, C., Zenone, T., Oechel, W., and Zona, D.: Photosynthesis - Solar Induced Fluorescence relationships in polar ecosystems, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-7284,, 2020


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