A five-year study of solar ultraviolet radiation in southern Chile (39 degrees S): potential impact on physiology of coastal marine algae?

Photochemistry and Photobiology
Pirjo HuovinenCharlotte Lovengreen

Abstract

This study reports 5 years of (1998-2003) data on continuous solar-irradiation measurements from a scanning spectroradiometer (SUV-100) in Valdivia, Chile (39 degrees S), accompanied by evaluation of the impact of ultraviolet radiation (UVR) on marine macroalgae of this site. UVR conditions showed a strong seasonal variation, which was less pronounced toward longer wavelengths. Daily maximum dose rates (clear days) averaged in winter-summer: UV-B(290-315 nm) 0.30-2.1, UV-B(290-320 nm) 0.70-3.7, UV-A(315-400 nm) 20.6-62.1, UV-A(320-400 nm) 20.2-60.5 W m(-2), and photosynthetically active radiation (PAR) 969-2423 micromol m(-2) s(-1). The corresponding daily doses (all the days) ranged: UV-B(290-315 nm) 2.6-40.7, UV-B(290-320 nm) 6.7-78.5, UV-A(315-400 nm) 228-1539, UV-A(320-400 nm) 224-1501, and PAR 2008-13308 kJ m(-2) d(-1). Taking into consideration action spectra of a biological interest, the risk of UV exposure could be up to 37 times higher in summer than in winter. The photosynthetic activity (as maximum quantum yield of chlorophyll fluorescence, F(v)/F(m)) of the brown alga Lessonia nigrescens from the infralittoral zone was markedly more sensitive to UVR than of the green alga Enteromorpha intestinalis from the upper mid...Continue Reading

References

Sep 1, 1974·Proceedings of the National Academy of Sciences of the United States of America·R B Setlow
Jan 23, 1999·Journal of Photochemistry and Photobiology. B, Biology·S MadronichM M Caldwell
Sep 16, 2000·Photochemistry and Photobiology·P S HuovinenG N Cherr
Feb 19, 2002·Journal of Photochemistry and Photobiology. B, Biology·Michael LebertDonat Peter Häder
Mar 27, 2003·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Donat P HäderE Walter Helbling
Jan 21, 2004·Journal of Photochemistry and Photobiology. B, Biology·Donat-P HäderE Walter Helbling
Jul 13, 2004·Journal of Photochemistry and Photobiology. B, Biology·E Walter HelblingDonat-P Häder
Jan 1, 1994·Photosynthesis Research·Y Shen

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Citations

Oct 1, 2013·Journal of Phycology·Daniel W PritchardChristopher D Hepburn
Oct 21, 2015·Frontiers in Plant Science·Gustavo A Lobos, James F Hancock
Oct 28, 2014·Frontiers in Plant Science·Laura ZorattiLaura Jaakola
Jun 28, 2016·Plant Physiology and Biochemistry : PPB·Claudio Inostroza-BlancheteauMarjorie Reyes-Díaz
Mar 8, 2007·FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology·Tal OfferJune E Ayling
May 6, 2016·PloS One·Pirjo HuovinenIván Gómez
Jan 1, 2016·Tellus. Series B, Chemical and Physical Meteorology·L GallardoP Velásquez

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