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Effects of solar ultraviolet radiation on terrestrial ecosystems. Patterns, mechanisms, and interactions with climate change

Journal Article


Abstract


  • Ultraviolet radiation (UV) is a minor fraction of the solar spectrum reaching the ground surface. In this

    assessment we summarize the results of previous work on the effects of the UV-B component

    (280–315 nm) on terrestrial ecosystems, and draw attention to important knowledge gaps in our

    understanding of the interactive effects of UV radiation and climate change. We highlight the following

    points: (i) The effects of UV-B on the growth of terrestrial plants are relatively small and, because the

    Montreal Protocol has been successful in limiting ozone depletion, the reduction in plant growth

    caused by increased UV-B radiation in areas affected by ozone decline since 1980 is unlikely to have

    exceeded 6%. (ii) Solar UV-B radiation has large direct and indirect (plant-mediated) effects on canopy

    arthropods and microorganisms. Therefore, trophic interactions (herbivory, decomposition) in

    terrestrial ecosystems appear to be sensitive to variations in UV-B irradiance. (iii) Future variations in

    UV radiation resulting from changes in climate and land-use may have more important consequences

    on terrestrial ecosystems than the changes in UV caused by ozone depletion. This is because the

    resulting changes in UV radiation may affect a greater range of ecosystems, and will not be restricted

    solely to the UV-B component. (iv) Several ecosystem processes that are not particularly sensitive to

    UV-B radiation can be strongly affected by UV-A (315–400 nm) radiation. One example is the physical

    degradation of plant litter. Increased photodegradation (in response to reduced cloudiness or canopy

    cover) will lead to increased carbon release to the atmosphere via direct and indirect mechanisms.

Authors


  •   Ballare, Carlos L. (external author)
  •   Caldwell, Martyn M. (external author)
  •   Flint, S D. (external author)
  •   Robinson, Sharon
  •   Bornman, Janet F. (external author)

Publication Date


  • 2011

Citation


  • Ballare, C., Caldwell, M., Flint, S., Robinson, S. A. & Bornman, J. F. (2011). Effects of solar ultraviolet radiation on terrestrial ecosystems. Patterns, mechanisms, and interactions with climate change. Photochemical and Photobiological Sciences, 10 (2), 226-241.

Scopus Eid


  • 2-s2.0-79751500343

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/5250

Has Global Citation Frequency


Number Of Pages


  • 15

Start Page


  • 226

End Page


  • 241

Volume


  • 10

Issue


  • 2

Abstract


  • Ultraviolet radiation (UV) is a minor fraction of the solar spectrum reaching the ground surface. In this

    assessment we summarize the results of previous work on the effects of the UV-B component

    (280–315 nm) on terrestrial ecosystems, and draw attention to important knowledge gaps in our

    understanding of the interactive effects of UV radiation and climate change. We highlight the following

    points: (i) The effects of UV-B on the growth of terrestrial plants are relatively small and, because the

    Montreal Protocol has been successful in limiting ozone depletion, the reduction in plant growth

    caused by increased UV-B radiation in areas affected by ozone decline since 1980 is unlikely to have

    exceeded 6%. (ii) Solar UV-B radiation has large direct and indirect (plant-mediated) effects on canopy

    arthropods and microorganisms. Therefore, trophic interactions (herbivory, decomposition) in

    terrestrial ecosystems appear to be sensitive to variations in UV-B irradiance. (iii) Future variations in

    UV radiation resulting from changes in climate and land-use may have more important consequences

    on terrestrial ecosystems than the changes in UV caused by ozone depletion. This is because the

    resulting changes in UV radiation may affect a greater range of ecosystems, and will not be restricted

    solely to the UV-B component. (iv) Several ecosystem processes that are not particularly sensitive to

    UV-B radiation can be strongly affected by UV-A (315–400 nm) radiation. One example is the physical

    degradation of plant litter. Increased photodegradation (in response to reduced cloudiness or canopy

    cover) will lead to increased carbon release to the atmosphere via direct and indirect mechanisms.

Authors


  •   Ballare, Carlos L. (external author)
  •   Caldwell, Martyn M. (external author)
  •   Flint, S D. (external author)
  •   Robinson, Sharon
  •   Bornman, Janet F. (external author)

Publication Date


  • 2011

Citation


  • Ballare, C., Caldwell, M., Flint, S., Robinson, S. A. & Bornman, J. F. (2011). Effects of solar ultraviolet radiation on terrestrial ecosystems. Patterns, mechanisms, and interactions with climate change. Photochemical and Photobiological Sciences, 10 (2), 226-241.

Scopus Eid


  • 2-s2.0-79751500343

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/5250

Has Global Citation Frequency


Number Of Pages


  • 15

Start Page


  • 226

End Page


  • 241

Volume


  • 10

Issue


  • 2