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Loss of sea ice alters light spectra for aquatic photosynthesis

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Listed:
  • Monika Soja-Woźniak

    (University of Amsterdam)

  • Tadzio Holtrop

    (University of Amsterdam
    VU University Amsterdam)

  • Sander Woutersen

    (University of Amsterdam)

  • Hendrik Jan Woerd

    (VU University Amsterdam)

  • Lars Chresten Lund-Hansen

    (Aarhus University)

  • Jef Huisman

    (University of Amsterdam)

Abstract

The dramatic loss of sea ice due to global warming is changing light conditions for marine primary production, but exactly how is not well understood. Previous studies revealed that small peaks in the absorption spectrum of liquid water, due to molecular vibrations of H2O, delineate a series of spectral niches for aquatic photosynthesis. Ice, however, has a smoother absorption spectrum and scatters light much more strongly than liquid water. Here, we show with a radiative transfer model that the loss of sea ice causes a pronounced blue shift, narrowing light spectra in the euphotic zone to shorter wavelengths. Furthermore, ice cover yields a smooth continuum of light spectra, whereas open water creates distinct spectral niches selecting for phytoplankton species with different photosynthetic pigments. These results indicate that the loss of sea ice will cause major changes in both the pigment and species composition of primary producers in polar ecosystems.

Suggested Citation

  • Monika Soja-Woźniak & Tadzio Holtrop & Sander Woutersen & Hendrik Jan Woerd & Lars Chresten Lund-Hansen & Jef Huisman, 2025. "Loss of sea ice alters light spectra for aquatic photosynthesis," Nature Communications, Nature, vol. 16(1), pages 1-12, December.
  • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-59386-x
    DOI: 10.1038/s41467-025-59386-x
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    References listed on IDEAS

    as
    1. Chad W. Thackeray & Alex Hall, 2019. "An emergent constraint on future Arctic sea-ice albedo feedback," Nature Climate Change, Nature, vol. 9(12), pages 972-978, December.
    2. Mathieu Ardyna & Kevin Robert Arrigo, 2020. "Phytoplankton dynamics in a changing Arctic Ocean," Nature Climate Change, Nature, vol. 10(10), pages 892-903, October.
    3. Maayke Stomp & Jef Huisman & Floris de Jongh & Annelies J. Veraart & Daan Gerla & Machteld Rijkeboer & Bas W. Ibelings & Ute I. A. Wollenzien & Lucas J. Stal, 2004. "Adaptive divergence in pigment composition promotes phytoplankton biodiversity," Nature, Nature, vol. 432(7013), pages 104-107, November.
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