Helge Ro-Poulsen

Research output

Research output per year 1989 2006 2008 2011 2017

• 43 Journal article
• 10 Conference abstract for conference
• 7 Book chapter
• 6 Report chapter
• 15 More
  • 5 Conference abstract in journal
  • 3 Book
  • 3 Report
  • 2 Conference abstract in proceedings
  • 1 Anthology
  • 1 Letter

Research output per year

Research output per year

Search results

• 2005

  Ambient UV-radiation decreases photosynthetic performance on High Arctic plants

  Albert, K., Ro-Poulsen, H. & N. Mikkelsen, T., 2005.

  Research output: Contribution to conference › Conference abstract for conference › Research

  297 Downloads (Pure)

• Effects of ambient versus reduced UV-B radiation on high arctic Salix arctica assessed by measurements and calculations of chlorophyll a fluorescence parameters from fluorescence transients

  Albert, K., Mikkelsen, T. N. & Ro-Poulsen, H., 2005, In: Physiologia Plantarum : An International Journal for Plant Biology. 124, 2, p. 208-226

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

  • Salix 100%
  • Arctica (Arcticidae) 83%
  • Arctic region 62%
  • Ultraviolet Rays 60%
  • ultraviolet radiation 52%
  47 Citations (Scopus)

• Effects of Reducing the Ambient UV-B Radiation in the High Arctic on Salix arctica and Vaccinium uliginosum.

  Albert, K., Ro-Poulsen, H., Mikkelsen, T. N., Bredahl, L. & Haakansson, K. B., 2005, In: Phyton. 45, 4, p. 41-49

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

  • Salix 100%
  • Vaccinium uliginosum 94%
  • Blueberry Plants 91%
  • Arctica (Arcticidae) 83%
  • Arctic region 62%
  4 Citations (Scopus)

  470 Downloads (Pure)

• Monitoring effects of UV-B radiation on high arctic vegetation

  Albert, K. R., Ro-Poulsen, H., Mikkelsen, T. N., Håkansson, K. B., Bredahl, L. & Rinnan, R., 2005, Zackenberg Ecological Research Operations, 10th Annual Report, 2004. Copenhagen K: Danish Polar Center, p. 68-70

  Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Communication
• 2004

  Effects of UV-B radiation on vegetation in Zackenberg: In Rasch, M. and Caning, K. (eds.) Zackenberg Ecological Research Operations, 9th Annual Report, 2003. - Copenhagen, Danish Polar Center, Ministry of Science, Technology and Innovation

  Ro-Poulsen, H., N. Mikkelsen, T., Bredahl, L., Albert, K., B. Håkansson, K. & Rinnan, R., 2004

  Research output: Book/Report › Report › Communication

  583 Downloads (Pure)

• Five-year measurements of ozone fluxes to a Danish Norway spruce canopy

  Mikkelsen, T. N., Ro-Poulsen, H., Hovmand, M. F., Jensen, N. O., Pilegaard, K. & Egeløv, A. H., 2004, In: Atmospheric Environment. 38, 15, p. 2361-2371 11 p.

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

  58 Citations (Scopus)

• Growing-season carbon dioxide flux in a dry subarctic heath: Responses to long-term manipulations

  Illeris, L., Kønig, S. M., Grogan, P., Jonasson, S. E., Michelsen, A. & Ro-Poulsen, H., 2004, In: Arctic, Antarctic, and Alpine Research. 36, p. 456-463

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

  34 Citations (Scopus)

• Monitering af UV-belastningen af vegetationen i Zackenberg. Tre års undersøgelser af UV-B effekter på højarktisk vegetation i NØ-Grøndland, Zackenberg. Opsummerende rapport til Miljøstyrelsen vedr. DANCEA-bevilling J.nr.M 123/000-0212

  Ro-Poulsen, H., Albert, K. & N. Mikkelsen, T., 2004, 12 p.

  Research output: Book/Report › Report › Communication

• Reduction of the Ambient UV-B Radiation in the High Arctic Increases Fv/Fm in Salix arctica and Vaccinium uliginosum and Reduces Stomatal Conductance and Internal CO₂ Concentration in Salix arctica

  Bredahl, L., Ro-Poulsen, H. & Mikkelsen, T. N., 2004, In: Arctic, Antarctic, and Alpine Research. 36, p. 363-368

  Research output: Contribution to journal › Journal article › Research › peer-review
• 2003

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

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

  Research output: Book/Report › Report › Communication

  394 Downloads (Pure)

• Field measurements of atmosphere-biosphere interactions in a Danish beech forest

  Pilegaard, K., Mikkelsen, TN., Beier, C., Jensen, NO., Ambus, P. L. & Ro-Poulsen, H., 10 Dec 2003, In: Boreal Environment Research. 8, 4, p. 315-333 19 p.

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

  77 Citations (Scopus)

• Field measurements of atmosphere-surface interactions in a Danish beech forest

  Pilegaard, K., Mikkelsen, T. N., Beier, C., Jensen, N. O., Ambus, P. L. & Ro-Poulsen, H., 2003, In: Boreal Environmental Research. 8, p. 315-333

  Research output: Contribution to journal › Journal article › Research › peer-review
• 2002

  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 othersVergne, P., 2002, In: Environmental Science and Pollution Research. 9, p. 199-203

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

  39 Citations (Scopus)

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

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

  Research output: Contribution to journal › Journal article › Research › peer-review
• 2001

  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, M. F., Jensen, N. O., Laurila, T., Pilegaard, K. & Ro-Poulsen, H., 2001, In: Water, Air & Soil Pollution: Focus. 1, 5, p. 263-274 12 p.

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

  • Birch Reduction 100%
  • Ozone 94%
  • Fluxes 60%
  • ozone 58%
  • Europe 51%
• 2000

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

  Mikkelsen, T. N., Ro-Poulsen, H., Pilegaard, K., Hovmand, M. F., 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

  • Ozone 100%
  • Fluxes 64%
  • Terpenes 47%
  • Surface reactions 37%
  • Nitric oxide 36%
  46 Citations (Scopus)
• 1998

  Impacts of ozone on forests: A European perspective

  Skärby, L., Ro-Poulsen, H., 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

  179 Citations (Scopus)

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

  Ro-Poulsen, H., Mikkelsen, T. N., Hovmand, M. F., 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

  11 Citations (Scopus)
• 1997

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

  Mikkelsen, T. N., Ro-Poulsen, H., 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

• 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, H. & 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

  45 Citations (Scopus)
• 1996

  Carbon and water balance for a mixed forest stand in relation to ozone uptake

  Mikkelsen, T. N., Ro-Poulsen, H., Hovmand, M. F., Hummelshøj, P. & Jensen, N. O., 1996, Critical levels for Ozone-Experiments with crops, wild plants and forest tree species in the Nordic countries. København: Nordic Council of Ministers, p. 80-85

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

• Critical levels of ozone for wood production of European beech (Fagus Sylvatica L.)

  Mortensen, L., Bastrup-Birk, A. & Ro-Poulsen, H., 1996, In: Water, Air and Soil Pollution. 85, p. 1349-1354

  Research output: Contribution to journal › Journal article › Research

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

  Mikkelsen, T. N. & Ro-Poulsen, H., 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
• 1995

  Long term in situ measurements of gas exchange in a Norway spruce canopy at ambient and elevated ozone levels using a light weight chamber system - chamber design and preliminary results

  Mikkelsen, T. N. & Ro-Poulsen, H., 1995, In: Water, Air and Soil Pollution. 85 (3), p. 1413-1418

  Research output: Contribution to journal › Journal article › Research › peer-review
• 1994

  Atmosfærens stoftilførsel til danske skovøkosystemer

  Hovmand, M. F., Andersen, H. V., Bille-Hansen, J. & Ro-Poulsen, H., 1994, In: Danmarks Miljoeundersoegelser. Faglig Rapport. 98, p. 59

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

• Critical levels for tropospheric ozone

  Mikkelsen, T. N., Ro-Poulsen, H. & et al, 1994, København: Nordic Council of Ministers. 63 p.

  Research output: Book/Report › Book › Research

• Exposure of Norway spruce to ozone increases the sensitivity of current years needles to photoinhibition and desiccation

  Mikkelsen, T. N. & Ro-Poulsen, H., 1994, In: New Phytologist. 128, p. 153-163

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

  30 Citations (Scopus)
• 1993

  Modelling the effect of fluxes of pollution to forest by coordinated measurements of permanent plot ecosystems, 92.60DK.DK003.0 and 93.60.DK003.0 (Fællesrapport til CEC fra FLS, DMU, Risø og KU)

  Ro-Poulsen, H., 1993, København.

  Research output: Book/Report › Book › Research

• Physiology of the Norway spruce trees growing on the danish EXMAN site

  Mikkelsen, T. N. & Ro-Poulsen, H., 1993, Experimental Manipulations of biota and biogeochemical cycling in Ecosystems. Ecosystems Research Report 4. Brussels, p. 244-246

  Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
• 1991

  Miljø og restprodukter. Gasformige luftforureningers effekter på danske plantesamfund

  Johnson, I., Ro-Poulsen, H., Søchting, U. & Mortensen, L., 1991, Danmark: Energiministeriets Forskningsudvalg.

  Research output: Book/Report › Book › Research
• 1989

  A delayed effect of ozone fumigation on photosynthesis of Norway spruce

  Eamus, D., Barnes, J. D., Mortensen, L., Ro-Poulsen, H. & Davison, A. W., 1989, In: Annals of Forest Science. 46 (suppl.), p. 568-572

  Research output: Contribution to journal › Journal article › Research