Effects of UV-B Radiation on Terrestrial and Aquatic ... - Annual Reviews [PDF]

Aug 14, 2002 - conducted during ozone depletion events when solar UV-B is naturally enhanced. (e.g., Antarctica). Regard

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Home (/) / Annual Review of Ecology and Systematics (/journal/ecolsys.1) / Volume 33, 2002 (/toc/ecolsys.1/33/1) / Day, pp 371-396

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Effects of UV-B Radiation on Terrestrial and Aquatic Primary * Producers Annual Review of Ecology and Systematics Vol. 33:371-396 (Volume publication date November 2002) First published online as a Review in Advance on August 14, 2002 https://doi.org/10.1146/annurev.ecolsys.33.010802.150434 (https://doi.org/10.1146/annurev.ecolsys.33.010802.150434)

Thomas A. Day1 and Patrick J. Neale2 Full Text HTML (/doi/full/10.1146/annurev.ecolsys.33.010802.150434#article-denial) Download PDF (/doi/pdf/10.1146/annurev.ecolsys.33.010802.150434#article-denial) Article Metrics (/doi/citedby/10.1146/annurev.ecolsys.33.010802.150434)



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AbstractOzone depletion by anthropogenic gases has increased the KEY WORDS atmospheric transmission of solar ultraviolet-B radiation (UV-B, 280–315 nm). Our understanding of the consequencences of enhanced UV-B levels on INTRODUCTION (/DOI/FULL/10.1146/ANNUREV.ECOLSYS.33.010802.150434#_I3) primary producers has grown dramatically over the past 20 years, but it has been hampered by how realistically experimental UV-B exposures mimic EXPERIMENTAL ozone-depletion scenarios. Overcoming these shortcomings will require PROTOCOLS sophisticated and creative approaches. Biological weighting functions and (/DOI/FULL/10.1146/ANNUREV.ECOLSYS.33.010802.150434#_I4) solar spectral irradiance estimates are critical in evaluating effects and require RESPONSES TO UV-B more attention. Whereas UV screening compounds in terrestrial and aquatic (/DOI/FULL/10.1146/ANNUREV.ECOLSYS.33.010802.150434#_I11) producers commonly increase with UV-B exposure, the implications, while CONCLUSIONS potentially far reaching, are unclear. Photosynthesis is more sensitive to UV-B (/DOI/FULL/10.1146/ANNUREV.ECOLSYS.33.010802.150434#_I17) in phytoplankton than in terrestrial plants, probably owing to less effective ACKNOWLEDGMENTS screening in phytoplankton. Productivity of terrestrial plants is usually (/DOI/FULL/10.1146/ANNUREV.ECOLSYS.33.010802.150434#_I18) unaffected by enhanced UV-B, although reduced growth has been observed LITERATURE CITED and may increase in magnitude over successive years. Aquatic productivity is (/DOI/FULL/10.1146/ANNUREV.ECOLSYS.33.010802.150434#_I19) often compromised by short-term exposures to enhanced UV-B, and long-term assessments are complicated by the dynamic nature of aquatic systems and by nonlinear responses. Recent work examining UV-B effects on multiple trophic levels suggests that outcomes will be diverse and difficult to predict. Such effects may lead to feedbacks on primary producers.

Keywords biological weighting functions (/keyword/Biological+Weighting+Functions); ozone depletion (/keyword/Ozone+Depletion); photosynthesis (/keyword/Photosynthesis); phytoplankton (/keyword/Phytoplankton); UV screening (/keyword/UV+Screening).

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