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Marine Biology

, Volume 131, Issue 4, pp 597–605 | Cite as

UV-radiation can affect depth-zonation of Antarctic macroalgae

  • K. Bischof
  • D. Hanelt
  • C. Wiencke
Article

Abstract

Due to depletion of stratospheric ozone over polar regions of the Northern and Southern Hemispheres UV-B-radiation has increased at the surface of the earth. Measurements of variable chlorophyll fluorescence were conducted to document UV-induced photoinhibition of photosystem II in cultivated macroalgae with different depth distributions in Antarctica. The reactions during artificial UV-exposure were observed on a short time scale (hours) and in light–dark cycles over several days. The nine species of investigated macroalgae show great differences in UV-tolerance of the photosynthetic process. Photosynthesis of the studied green algae was inhibited to a minor degree, while the brown algae showed an intermediate inhibition of photosynthesis. The response of the studied red algae varied with species. The differences in the degree of inhibition and recovery of photosynthetic efficiency and capacity indicate that UV-radiation is one important factor affecting the vertical distribution of macroalgae in nature.

Keywords

Chlorophyll Ozone Photosynthesis Green Alga Southern Hemisphere 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • K. Bischof
    • 1
  • D. Hanelt
    • 1
  • C. Wiencke
    • 1
  1. 1.Alfred Wegener Institute for Polar and Marine Research, D-27515 Bremerhaven, GermanyDE

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