EFFECTS OF UV‐B IRRADIATION ON PHOTOMOVEMENT IN THE DESMID, Cosmarium cucumis

@article{Hder1987EFFECTSOU,
  title={EFFECTS OF UV‐B IRRADIATION ON PHOTOMOVEMENT IN THE DESMID, Cosmarium cucumis},
  author={Donat-P. H{\"a}der},
  journal={Photochemistry and Photobiology},
  year={1987},
  volume={46}
}
  • D. Häder
  • Published 1 July 1987
  • Chemistry
  • Photochemistry and Photobiology
Abstract Monochromatic UV‐B irradiation affects neither the absorption nor the fluorescence of the bulk pigments in the desmid Cosmarium cucumis but it impairs photomovement of these organisms at fluence rates which are not higher than the ambient level of solar UV‐B irradiation. Photoaccumula‐tions and phototaxis are strongly inhibited especially at wavelengths ≤ 300 nm while photodispersal at higher white light fluence rates is hardly affected by supplementary UV‐B. This effect has important… 
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