Effects of UV radiation on seaweeds

Link:
Autor/in:
Beteiligte Personen:
  • Ørbæk, Jon Børre
  • Kallenborn, Roland
  • Tombre, Ingunn
  • Hegseth, Else N.
  • Falk-Petersen, Stig
  • Hoel, Alf H.
Verlag/Körperschaft:
Springer-Verlag Berlin Heidelberg
Erscheinungsjahr:
2007
Medientyp:
Text
Schlagworte:
  • Animals
  • Cells/radiation effects
  • DNA/radiation effects
  • Humans
  • Mutation
  • Photochemistry
  • Skin/radiation effects
  • Ultraviolet Rays
Beschreibung:
  • Organisms living in the littoral ecosystem have to a certain extent developed the capability to adapt to an increasing stress factor, e.g. the increasing UV radiation. From the studies conducted so far, it can be concluded that the presently measured UV levels are not likely to seriously affect the macroalgal communities in Arctic coastal ecosystems. Although photosynthesis and growth were shown to be sensitive to UV exposure when algae were sampled or transplanted from their original location, all species studied exhibited sufficient acclimation potential to the respective variations in radiation conditions at their specific growth site. However, in combination with other stress factors, e.g. global warming, increased storm frequencies or pollution the impact on the plant will increase or may even become exponential so that the organism is strongly harmed and the species might become endangered. As a result, this will affect not only the plant community but also the grazers and carnivores which adopt a higher position in the respective biotic pyramid. In future, more attention has to be directed to the small developmental stages of the macroalgae. Zonation pattern depends mostly on this life history stage with the highest susceptibility to UV. Due to the tiny size or the delicate structure of the early developmental stages, UV penetrates easily and can produce strong damage to the young organisms. Due to the central role of macroalgae as primary producers at the Arctic coast line these investigations will provide important information on the function of this unique ecosystem. © 2007 Springer-Verlag Berlin Heidelberg.
Lizenz:
  • info:eu-repo/semantics/closedAccess
Quellsystem:
Forschungsinformationssystem der UHH
Interne Metadaten
Quelldatensatz
oai:www.edit.fis.uni-hamburg.de:publications/70c19d24-b6af-40bc-b229-549385e0bfbd