Outdoor studies on the effects of solar UV-B on bryophytes: Overview and methodology

P. Boelen, M.K. de Boer, N. de Bakker, Jelte Rozema

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32 Citations (Scopus)

Abstract

In this review all recent field studies on the effects of UV-B radiation on bryophytes are discussed. In most of the studies fluorescent UV-B tubes are used to expose the vegetation to enhanced levels of UV-B radiation to simulate stratospheric ozone depletion. Other studies use screens to filter the UV-B part of the solar spectrum, thereby comparing ambient levels of UV-B with reduced UV-B levels, or analyse effects of natural variations in UV-B arising from stratospheric ozone depletion. Nearly all studies show that mosses are well adapted to ambient levels of UV-B radiation since UV-B hardly affects growth parameters. In contrast with outdoor studies on higher plants, soluble UV-B absorbing compounds in bryophytes are typically not induced by enhanced levels of UV-B radiation. A few studies have demonstrated that UV-B radiation can influence plant morphology, photosynthetic capacity, photosynthetic pigments or levels of DNA damage. However, there is only a limited number of outdoor studies presented in the literature. More additional, especially long-term, experiments are needed to provide better data for statistical meta-analyses. A mini UV-B supplementation system is described, especially designed to study effects of UV-B radiation at remote field locations under harsh conditions, and which is therefore suited to perform long-term studies in the Arctic or Antarctic. The first results are presented from a long-term UV-B supplementation experiment at Signy Island in the Maritime Antarctic.

Original languageEnglish
Pages (from-to)137-152
Number of pages16
JournalPlant ecology
Volume182
Issue number1
DOIs
Publication statusPublished - Jan-2006

Keywords

  • Antarctic
  • Arctic
  • bryophytes
  • Chorisodontium aciplyllum
  • cyclobutane Pyrimidine dimers
  • DNA damage
  • mosses
  • ozone depletion
  • Polytrichum strictum
  • Sanionia uncinata
  • terrestrial polar ecosystems
  • ultraviolet-B radiation
  • UV-B exposure systems
  • UVBR
  • Warnstorfia sarmentosa
  • STRATOSPHERIC OZONE DEPLETION
  • TIERRA-DEL-FUEGO
  • SUB-ARCTIC HEATH
  • SIMULATED CLIMATE-CHANGE
  • UNCINATA HEDW. LOESKE
  • ULTRAVIOLET-RADIATION
  • HIGHER-PLANTS
  • TERRESTRIAL ECOSYSTEMS
  • OXIDATIVE STRESS
  • GLOBAL CHANGE

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