AMBIO

, Volume 41, Supplement 3, pp 256–268 | Cite as

Enhanced UV-B and Elevated CO2 Impacts Sub-Arctic Shrub Berry Abundance, Quality and Seed Germination

  • Dylan Gwynn-Jones
  • Alan G. Jones
  • Alice Waterhouse
  • Ana Winters
  • David Comont
  • John Scullion
  • Rosie Gardias
  • Bente J. Graee
  • John A. Lee
  • Terry V. Callaghan
Article

Abstract

This study investigated the effects of long-term-enhanced UV-B, and combined UV-B with elevated CO2 on dwarf shrub berry characteristics in a sub-arctic heath community. Germination of Vaccinium myrtillus was enhanced in seeds produced at elevated UV-B, but seed numbers and berry size were unaffected. Elevated UV-B and CO2 stimulated the abundance of V. myrtillus berries, whilst UV-B alone stimulated the berry abundance of V. vitis-idaea and Empetrum hermaphroditum. Enhanced UV-B reduced concentrations of several polyphenolics in V. myrtillus berries, whilst elevated CO2 increased quercetin glycosides in V. myrtillus, and syringetin glycosides and anthocyanins in E. hermaphroditum berries. UV-B × CO2 interactions were found for total anthocyanins, delphinidin-3-hexoside and peonidin-3-pentosidein in V. myrtillus berries but not E. hermaphroditum. Results suggest positive impacts of UV-B on the germination of V. myrtillus and species-specific impacts of UV-B × elevated CO2 on berry abundance and quality. The findings have relevance and implications for human and animal consumers plus seed dispersal and seedling establishment.

Keywords

CO2 Elevated UV-B Enhanced Arctic Reproduction Berry Abundance Secondary metabolites 

Notes

Acknowledgments

The authors are grateful to the UK Natural Environmental Research Council for supporting this research (grant NE/H023690/1). We also thank the UV4Growth cost network for supporting the study. Finally, we thank all staff at Abisko Naturvetenskpliga station and the Swedish Royal Academy of Sciences for making this study possible via their unswerving support over the past two decades.

Supplementary material

13280_2012_311_MOESM1_ESM.doc (122 kb)
Supplementary material 1 (DOC 122 kb)
13280_2012_311_MOESM2_ESM.tif (517 kb)
Supplementary material 2 (TIFF 516 kb)

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Copyright information

© Royal Swedish Academy of Sciences 2012

Authors and Affiliations

  • Dylan Gwynn-Jones
    • 1
  • Alan G. Jones
    • 1
  • Alice Waterhouse
    • 1
  • Ana Winters
    • 1
  • David Comont
    • 1
  • John Scullion
    • 1
  • Rosie Gardias
    • 1
  • Bente J. Graee
    • 2
  • John A. Lee
    • 3
  • Terry V. Callaghan
    • 4
  1. 1.Institute of Biological Environmental and Rural SciencesAberystwyth UniversityWalesUK
  2. 2.Department of BiologyNorwegian University of Science and TechnologyTrondheimNorway
  3. 3.Department of Animal and Plant SciencesUniversity of SheffieldSheffieldUK
  4. 4.Royal Swedish Academy of SciencesStockholmSweden

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