Helge Ro-Poulsen

Helge Ro-Poulsen

Emeritus

Member of:

    ORCID: 0000-0002-6531-118X

    Publication year:
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    11 - 20 out of 82Page size: 10
    1. 1996
    2. Published

      Ozone effects on primary productivity in current year shoots of 35 years old Norway spruce

      Mikkelsen, T. N. & Ro-Poulsen, Helge, 1996, Critical levels for Ozone-Experiments with crops, wild plants and forest tree species in the Nordic countries. København: Nordic Council of Ministers, p. 73-79

      Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

    3. 1997
    4. Published

      Carbon dioxide fluxes above a coniferous/hardwood stand in relation to climate - consecutive measurements from 17 months

      Mikkelsen, T. N., Ro-Poulsen, Helge, Hummelshøj, P. & Jensen, N. O., 1997, Impacts of global change on tree physiology and forest ecosystems, Forestry Sciences, vol. 52. Dordrecht, Holland: Kluwer Academic Publishers, p. 331-336

      Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

    5. Published

      Effects of increased UV-B radiation and elevated levels of tropospheric ozone on physiological processes in European Beech (Fagus sylvatica)

      Zeuthen, J., Mikkelsen, T. N., Ro-Poulsen, Helge & Paludan-Müller, G., 1997, In: Physiologia Plantarum : An International Journal for Plant Biology. 100, p. 281-290

      Research output: Contribution to journal › Journal article › Research › peer-review

    6. 1998
    7. Published

      Impacts of ozone on forests: A European perspective

      Skärby, L., Ro-Poulsen, Helge, Wellburn, F. A. M. & Sheppard, L. J., 1998, In: New Phytologist. 139, p. 109-122

      Research output: Contribution to journal › Journal article › Research › peer-review

    8. Published

      Ozone deposition in relation to canopy physiology in a mixed conifer forest in Denmark

      Ro-Poulsen, Helge, Mikkelsen, T. N., Hovmand, Mads Frederik, Hummelshøj, P. & Jensen, N. O., 1998, In: Chemosphere. 36, 4-5, p. 669-674 6 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    9. 2000
    10. Published

      Ozone uptake by an evergreen forest canopy: temporal variation and possible mechanisms

      Mikkelsen, T. N., Ro-Poulsen, Helge, Pilegaard, K., Hovmand, Mads Frederik, Jensen, N. O., Christensen, C. S. & Hummelshoej, P., 2000, In: Environmental Pollution. 109, 3, p. 423-429 6 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    11. 2001
    12. Published

      Comparisons of measured and modelled ozone deposition to forests in northern Europe

      Touvinen, J. P., Simpson, D., Mikkelsen, T. N., Emberson, L. D., Ashmore, M. R., Aurela, M., Cambridge, H. M., Hovmand, Mads Frederik, Jensen, N. O., Laurila, T., Pilegaard, K. & Ro-Poulsen, Helge, 2001, In: Water, Air & Soil Pollution: Focus. 1, 5, p. 263-274 12 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    13. 2002
    14. Published

      In situ Autumn ozone fumigation of mature Norway Spruce - Effects on Net Photosynthesis

      Mikkelsen, T. N. & Ro-Poulsen, Helge, 2002, In: Phyton (Austria). 42, p. 97-104

      Research output: Contribution to journal › Journal article › Research › peer-review

    15. Published

      EuroBionet: A Pan-European biomonotoring network for urban air quality assessment

      Klumpp, A., Ansel, W., Klumpp, G., Belluzzo, N., Calatayud, V., Chaplin, N., Garrec, J. P., Gutsche, H-J., Hayes, M., Hentze, H-W., Kambezidis, H., Laurent, O., Penuelas, J., Rasmussen, S., Ribas, A., Ro-Poulsen, H., Rossi, S., Sanz, M. J., Shang, H., Sifakis, N. & 1 others, Vergne, P., 2002, In: Environmental Science and Pollution Research. 9, p. 199-203

      Research output: Contribution to journal › Journal article › Research › peer-review

    16. 2003
    17. Published

      Effects of UV-B radiation on vegetation in Zackenberg: In Rasch, M. and Caning, K. (eds.) Zackenberg Ecological Research Operations, 8th Annual Report, 2002. - Copenhagen, Danish Polar Center, Ministry of Science, Technology and Innovation, 2003.

      N. Mikkelsen, T., Ro-Poulsen, Helge, Bredahl, L. & Albert, K., 2003

      Research output: Book/Report › Report › Communication

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    ID: 7631