Helge Ro-Poulsen
Emeritus
- Published
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, Helge, 1995, In: Water, Air and Soil Pollution. 85 (3), p. 1413-1418Research output: Contribution to journal › Journal article › Research › peer-review
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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. 331-336Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
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Exposure of Norway spruce to ozone increases the sensitivity of current years needles to photoinhibition and desiccation
Mikkelsen, T. N. & Ro-Poulsen, Helge, 1994, In: New Phytologist. 128, p. 153-163Research output: Contribution to journal › Journal article › Research › peer-review
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Critical levels of ozone for wood production of European beech (Fagus Sylvatica L.)
Mortensen, L., Bastrup-Birk, A. & Ro-Poulsen, Helge, 1996, In: Water, Air and Soil Pollution. 85, p. 1349-1354Research output: Contribution to journal › Journal article › Research
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CLIMAITE - a three factor climate change ecosystem manipulation experiment: Geophysical Research Abstracts, Vol. 10, EGU2008-A-07931, 2008. SRef-ID: 1607-7962/gra/EGU2008-A-07931. EGU General Assembly 13-18 April 2008 in Vienna, Switzerland
N. Mikkelsen, T., Beier, C., Jonasson, S. E., Holmstrup, M., Schmidt, I. K., Ambus, P. L., Pilegaard, K., Michelsen, A., Albert, K., Andresen, L. C., Arndal, M. F., Bruun, N., Christensen, S., Danbæk, S., Gundersen, P., Jørgensen, P., J. Linden, L., Pedersen, J. K., Maraldo, K., Priemé, A. & 11 others, , 2008.Research output: Contribution to conference › Conference abstract for conference › Research
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CLIMAITE – a three factor climate change ecosystem manipulation experiment
N. Mikkelsen, T., Beier, C., Albert, K. & Ro-Poulsen, Helge, 2007, In: Geophysical Research Abstracts. 10Research output: Contribution to journal › Conference abstract in journal › Research
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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., 2003Research output: Book/Report › Report › Communication
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Field measurements of atmosphere-biosphere interactions in a Danish beech forest
Pilegaard, K., Mikkelsen, T., Beier, Claus, Jensen, N., Ambus, Per Lennart & Ro-Poulsen, Helge, 10 Dec 2003, In: Boreal Environment Research. 8, 4, p. 315-333 19 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Field measurements of atmosphere-surface interactions in a Danish beech forest
Pilegaard, K., Mikkelsen, T. N., Beier, C., Jensen, N. O., Ambus, Per Lennart & Ro-Poulsen, Helge, 2003, In: Boreal Environmental Research. 8, p. 315-333Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Ambient ultraviolet radiation in the Arctic reduces root biomass and alters microbial community composition but has no effects on microbial biomass
Rinnan, R., Keinänen, M. M., Kasurinen, A., Asikainen, J., Kekki, T. K., Holopainen, T., Ro-Poulsen, Helge, Mikkelsen, T. N. & Michelsen, Anders, 2005, In: Global Change Biology. 11, 4, p. 564 - 574Research output: Contribution to journal › Journal article › Research › peer-review
ID: 7631
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2121
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Solar Ultraviolet-B radiation at Zackenberg: The impact on higher plants and soil microbial communities: In: High-arctic ecosystem dynamics in a changing climate (eds H. Meltofte, T.R. Christensen, B. Elberling, M. Forchhammer, M. Rasch)
Research output: Book/Report › Anthology › Research › peer-review
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1474
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Ambient UV-B radiation decreases photosynthesis in high arctic Vaccinium uliginosum.
Research output: Contribution to journal › Journal article › Research › peer-review
Published -
939
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The Biological Time Machine - Biological responses to multiple environmental and climatic changes: Environment and Stress, Ph.d. symposium at KVL October 2006
Research output: Contribution to conference › Conference abstract for conference › Research
Published