Towards improved estimates of sea-ice algal biomass: experimental assessment of hyperspectral imaging cameras for under-ice studies.
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Meiners, Klaus M.
Lund-Hansen, Lars Chresten
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Ice algae are a key component in polar marine food webs and have an active role in large-scale biogeochemical cycles. They remain extremely under-sampled due to the coarse nature of traditional point sampling methods compounded by the general logistical limitations of surveying in polar regions. This study provides a first assessment of hyperspectral imaging as an under-ice remote-sensing method to capture sea-ice algae biomass spatial variability at the ice/water interface. Ice-algal cultures were inoculated in a unique inverted sea-ice simulation tank at increasing concentrations over designated cylinder enclosures and sparsely across the ice/water interface. Hyperspectral images of the sea ice were acquired with a pushbroom sensor attaining 0.9 mm square pixel spatial resolution for three different spectral resolutions (1.7, 3.4, 6.7 nm). Image analysis revealed biomass distribution matching the inoculated chlorophyll a concentrations within each cylinder. While spectral resolutions.....
JournalAnnals Of Glaciology
Sustainable Development Goals (SDG)14.a
Maturity LevelPilot or Demonstrated
Spatial CoveragePolar Region
CitationCimoli, E., Lucieer, A., Meiners, K. M., Lund-Hansen, L. C., Kennedy, F., Martin, A., McMinn, A. and Lucieer, V. (2017) Towards improved estimates of sea-ice algal biomass: Experimental assessment of hyperspectral imaging cameras for under-ice studies. Annals of Glaciology, 58, pp.68–77. DOI: https://doi.org/10.1017/aog.2017.6
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