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Studies on the effects of UV-B radiation on phytoplankton of Sub-Antarctic lakes and ponds
Department of Plant Physiology, University of Lund.
1992 (English)In: Polar Biology, ISSN 0722-4060, Vol. 12, 533-537 p.Article in journal (Refereed) Published
Abstract [en]

Experiments were performed to determine the effects of UV-B (ultraviolet, 280–320 nm) radiation on motility and growth of phytoplankton from lakes and ponds in South Georgia. After 4 h of solar radiation and 4h artificial radiation (UV-BBE 11.6 kJ m-2 day-1, UV-B lamps) the swimming velocity of Cryptomonas sp. decreased. The growth rate of Botryococcus, Lyngbya sp. and Stauraslrum sp. did not show any significant variations between the different light conditions. The UV-B component was reduced by filtering solar radiation through glass bottles und cellulose acetate. Cloudy days had only 30% of the radiation of clear days in both the PAR (photosynthetic active radiation) and UV-B regions. The ponds contained large amounts of humic substances, which are responsible for the absorbance in the UV region.

Place, publisher, year, edition, pages
1992. Vol. 12, 533-537 p.
Keyword [en]
ultraviolet radiation
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:miun:diva-7542DOI: 10.1007/BF00238193OAI: oai:DiVA.org:miun-7542DiVA: diva2:127690
Available from: 2008-12-10 Created: 2008-12-09 Last updated: 2009-11-06Bibliographically approved

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Ekelund, Nils
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