Helge Ro-Poulsen
Emeritus
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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. 97-104Research output: Contribution to journal › Journal article › Research › peer-review
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A delayed effect of ozone fumigation on photosynthesis of Norway spruce
Eamus, D., Barnes, J. D., Mortensen, L., Ro-Poulsen, Helge & Davison, A. W., 1989, In: Annals of Forest Science. 46 (suppl.), p. 568-572Research output: Contribution to journal › Journal article › Research
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Airborne trace element pollution in 11 European cities assessed by exposure of standardised ryegrass cultures
Klumpp, A., Ansel, W., Klumpp, G., Breuer, J., Vergne, P., Sanz, M. J., Rasmussen, S., Ro-Poulsen, Helge, Artola, A. R., Penuelas, J., He, S., Garrec, J. P. & Calatayud, V., 2009, In: Atmospheric Environment. 43, 2, p. 329-339Research output: Contribution to journal › Journal article › Research › peer-review
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Ambient UV-B decreases PSII performance and net photosynthesis under natural irradiance of the high arctic dwarf shrub Salix arctica
Albert, K., Mikkelsen, T. N., Ro-Poulsen, Helge, Arndal, M. F. & Michelsen, Anders, 2008.Research output: Contribution to conference › Conference abstract for conference › Research
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Ambient UV-B radiation decreases photosynthesis in high arctic Vaccinium uliginosum.
Albert, K., Ro-Poulsen, Helge & N. Mikkelsen, T., 2008, In: Physiologia Plantarum : An International Journal for Plant Biology. 133, 2, p. 199-210 11 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Ambient UV-B radiation reduces PSII performance and net photosynthesis in high Arctic Salix arctica
Albert, K. R., Mikkelsen, T. N., Ro-Poulsen, Helge, Arndal, M. F. & Michelsen, Anders, 2011, In: Environmental and Experimental Botany. 73, p. 10-18 9 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Ambient UV-Bradiation reduces PSII performance and net photosynthesis in high Arctic Salix arctica.
Albert, K. R., Mikkelsen, T. N., Ro-Poulsen, Helge, Arndal, M. F. & Michelsen, Anders, 2011, In: Environmental and Experimental Botany. 72, 3, p. 439-447 9 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Ambient UV-radiation decreases photosynthetic performance on High Arctic plants
Albert, K., Ro-Poulsen, Helge & N. Mikkelsen, T., 2005.Research output: Contribution to conference › Conference abstract for conference › Research
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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
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Antagonism between elevated CO2, nighttime warming, and summer drought reduces the robustness of PSII performance to freezing events
Albert, K. R., Boesgaard, K., Ro-Poulsen, Helge, Mikkelsen, T. N., Andersen, S. & Pilegaard, K., 2013, In: Environmental and Experimental Botany. 93, p. 1-12 12 p.Research output: Contribution to journal › Journal article › Research › peer-review
Atmosfærens stoftilførsel til danske skovøkosystemer
Hovmand, Mads Frederik, Andersen, H. V., Bille-Hansen, J. & Ro-Poulsen, Helge, 1994, In: Danmarks Miljoeundersoegelser. Faglig Rapport. 98, p. 59Research output: Contribution to journal › Journal article › Research › peer-review
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Atmospheric composition change: ecosystems-atmosphere interactions
Fowler, D., Pilegaard, K., Sutton, M. A., Ambus, P. L., Raivonen, M., Duyzer, J., Simpson, D., Fagerli, H., Fuzzi, S., Schjørring, J. K., Granier, C., Neftel, A., Isaksen, I. S. A., Laj, P., Maione, M., Monks, P. S., Burkhardt, J., Daemmgen, U., Neirynck, J., Personne, E. & 37 others, , 2009, In: Atmospheric Environment. 43, 33, p. 5193-5267 75 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Biological responses to current UV-B radiation in Arctic regions: Geophysical Research Abstracts, Vol. 10, EGU2008-A-11698, 2008. SRef-ID: 1607-7962/gra/EGU2008-A-11698. EGU General Assembly 13-18 2008 April Vienna, Switzerland
Albert, K., N. Mikkelsen, T. & Ro-Poulsen, Helge, 2008.Research output: Contribution to conference › Conference abstract for conference › Research
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Biological responses to current UV-B radiation in Arctic regions
Albert, K. R., Mikkelsen, T. N. & Ro-Poulsen, Helge, 2008, In: Geophysical Research Abstracts. 10, EGU2008-A-11698Research output: Contribution to journal › Conference abstract in journal › Research
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Biological responses to current UV-B radiation in Arctic regions: 5th SPPS 2008 PhD conference January 24-27 2008 in Haslev, Denmark
Albert, K., N. Mikkelsen, T. & Ro-Poulsen, Helge, 2008.Research output: Contribution to conference › Conference abstract for conference › Research
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Biological responses to current fluxes of ultraviolet radiation in High Arctic
Albert, K., Rinnan, R., N. mikkelsen, T., Ro-Poulsen, Helge, Michelsen, Anders, Arndal, M. F. & M. Schmidt, N., 2008.Research output: Contribution to conference › Conference abstract for conference › Research
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Biomonitoring of toxic compounds of airborne particulate matter in urban and industriel areas
Klumpp, A. & Ro-Poulsen, Helge, 2010, Urban airborne particulate matter: origin, chemistry, fate and health Impacts. Zereini, F. & Wiseman, C. L. S. (eds.). Springer Science+Business Media, p. 467-481 15 p. (Environmental Science and Engineering).Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review
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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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Carbon and water balance for a mixed forest stand in relation to ozone uptake
Mikkelsen, T. N., Ro-Poulsen, Helge, 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. 80-85Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
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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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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
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Critical levels for tropospheric ozone
Mikkelsen, T. N., Ro-Poulsen, Helge & et al, 1994, København: Nordic Council of Ministers. 63 p.Research output: Book/Report › Book › Research
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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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Does warming affect growth rate and biomass production of shrubs in the High Arctic?
Campioli, M., Schmidt, N. M., Albert, K. R., Leblans, N., Ro-Poulsen, Helge & Michelsen, Anders, 2013, In: Plant Ecology. 214, 8, p. 1049-1058 10 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Ecosystem Recovery after Drought Events in Our Future Climate
Selsted, M. B., Albert, K., Ambus, Per Lennart, Michelsen, Anders, Ro-Poulsen, Helge, Mikkelsen, T. N. & Ibrom, A., 2009, In: Institute of Physics Conference Series.Research output: Contribution to journal › Conference abstract in journal › Research
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Effects of Reducing the Ambient UV-B Radiation in the High Arctic on Salix arctica and Vaccinium uliginosum.
Albert, K., Ro-Poulsen, Helge, Mikkelsen, T. N., Bredahl, L. & Haakansson, K. B., 2005, In: Phyton. 45, 4, p. 41-49Research output: Contribution to journal › Journal article › Research › peer-review
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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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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, Helge, N. Mikkelsen, T., Bredahl, L., Albert, K., B. Håkansson, K. & Rinnan, R., 2004Research output: Book/Report › Report › Communication
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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, Helge, 2005, In: Physiologia Plantarum : An International Journal for Plant Biology. 124, 2, p. 208-226Research output: Contribution to journal › Journal article › Research › peer-review
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Effects of climate manipulations on processes and organisms in high arctic terrestrial ecosystems
Michelsen, Anders, Kønig, S. M., Illeris, L., Arndal, M., Albert, K., Tamstorf, M. P. & Ro-Poulsen, Helge, 2006, Zackenberg Ecological Research Operations11th Annual Report, 2005: Copenhagen, Danish Polar Center, Ministry of Science, Technology andInnovation, 2006.. Klitgaard, A. B., Rasch, M. & Caning, K. (eds.). Copenhagen: Danish Polar Center, p. 89-90Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication
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Effects of elevated CO2, warming and drought episodes on plant carbon uptake in a temperate heath ecosystem are controlled by soil water status.
Albert, K. R., Ro-Poulsen, Helge, Mikkelsen, T. N., Michelsen, Anders, van der Linden, L. & Beier, Claus, 2011, In: Plant, Cell and Environment. 34, 7, p. 1207-1222 16 p.Research output: Contribution to journal › Journal article › Research › peer-review
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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. 281-290Research output: Contribution to journal › Journal article › Research › peer-review
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Effects of manipulations of local climate on carbon dioxide exchange and plant performance in two high arctic heaths
Michelsen, Anders, Boesgaard, K., Arndal, M. F., Tamstorf, M., Schmidt, N. M., Albert, K. & Ro-Poulsen, Helge, 2008, Zackenberg Ecological Research Operations, 13th Annual Report, 2007.: Danish Polar Center, Danish Agency for Science, Technology and innovation, Ministry of Science, Technology and Innovation.. Klitgaard, A. B. & Rasch, M. (eds.). Copenhagen: Danish Polar Center, p. 70-71Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Communication
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Effects of manipulations of local climate on processes and organisms in high arctic terrestrial ecosystems
Michelsen, Anders, Ellebjerg, S., Tamstorf, M., Schmidt, N. M., Illeris, L., Albert, K. & Ro-Poulsen, Helge, 2007, Zackenberg Ecological Research Operations. 12th Annual Report 2006. Klitgaard, A. B., Rasch, M. & Canning, K. (eds.). Copenhagen, DK: Nyt Nordisk Forlag Arnold Busck, p. 80-81 2 p.Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Communication
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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, , 2002, In: Environmental Science and Pollution Research. 9, p. 199-203Research output: Contribution to journal › Journal article › Research › peer-review
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Experimental design of multifactor climate change experiments with elevated CO2, warming and drought: the CLIMAITE project
Mikkelsen, T. N., 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., Linden, L., Nielsen, J. K., Maraldo, K., Priemé, A. & 11 others, , 2008, In: Functional Ecology. 22, 1, p. 185-195 11 p.Research output: Contribution to journal › Journal article › Research › peer-review
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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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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
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Five-year measurements of ozone fluxes to a Danish Norway spruce canopy
Mikkelsen, T. N., Ro-Poulsen, Helge, Hovmand, Mads Frederik, 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
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Future photosynthetic performance of heath plants – results from the multi-factorial ecosystem experiment, CLIMAITE: 5th SPPS 2008 PhD conference January 24-27 2008 in Haslev, Denmark
Albert, K., N. Mikkelsen, T. & Ro-Poulsen, Helge, 2008.Research output: Contribution to conference › Conference abstract for conference › Research
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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, Anders & Ro-Poulsen, Helge, 2004, In: Arctic, Antarctic, and Alpine Research. 36, p. 456-463Research output: Contribution to journal › Journal article › Research › peer-review
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How does prolonged drought affect plant physiological processes? - Focus on the interactions with increased temperature and elevated [CO2] within the CLIMAITE project?
Albert, K., Ro-Poulsen, Helge & N. Mikkelsen, T., 2006.Research output: Contribution to conference › Conference abstract for conference › Research
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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. 109-122Research output: Contribution to journal › Journal article › Research › peer-review
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Improved UV-B screening capacity does not prevent negative effects of ambient UV irradiance on PSII performance in High Arctic plants. Results from a six year UV exclusion study
Albert, K. R., Mikkelsen, T. N., Ro-Poulsen, Helge, Michelsen, Anders, Arndal, M. F., Bredahl, L., Håkansson, K. B., Boesgaard, K. & Schmidt, N. M., 15 Dec 2010, In: Journal of Plant Physiology. 167, 18, p. 1542-1549 8 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Interactive effects of drought, elevated CO2 and warming on photosynthetic capacity and photosystem performance in temperate heath plants
Albert, K. R., Mikkelsen, T. N., Michelsen, Anders, Ro-Poulsen, Helge & van der Linden, L., 2011, In: Journal of Plant Physiology. 168, 13, p. 1550-61 12 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Interactive effects of elevated CO2, warming, and drought on photosynthesis of Deschampsia flexuosa in a temperate heath ecosystem.
Albert, K. R., Ro-Poulsen, Helge, Mikkelsen, T. N., Michelsen, A., Linden, L. V. D. & Beier, Claus, 2011, In: Journal of Experimental Botany. 62, 12, p. 4253-4266 14 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Klimaændringer og processer og funktion i terrestiske økosystemer
Schmidt, Inger Kappel, Beier, C., Nielsen, Jane Kongstad, Andresen, L., Michelsen, Anders, Albert, K., Ambus, Per Lennart, Selsted, M., Maraldo, K., Holmstrup, M., Arndal, M. F., Mikkelsen, T. N., Ro-Poulsen, Helge, Jonassen, S. & Karsten, R. J., 2007, In: Flora og Fauna. 113, 4, p. 117-128 12 p.Research output: Contribution to journal › Journal article › Research
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Large increases in Arctic biogenic volatile emissions are a direct effect of warming
Kramshøj, M., Vedel-Petersen, I., Schollert, M., Rinnan, Åsmund, Nymand, J., Ro-Poulsen, Helge & Rinnan, Riikka, 2016, In: Nature Geoscience. 9, 5, p. 349-352 4 p.Research output: Contribution to journal › Letter › Research › peer-review
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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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Long-term structural canopy changes sustain net photosynthesis per ground area in high arctic Vaccinium uliginosum exposed to changes in near-ambient UV-B levels
Boesgaard, K. S., Albert, K. R., Ro-Poulsen, Helge, Michelsen, Anders, Mikkelsen, T. N. & Schmidt, N. M., 2012, In: Physiologia Plantarum. 145, 4, p. 540-550 11 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Miljø og restprodukter. Gasformige luftforureningers effekter på danske plantesamfund
Johnson, I., Ro-Poulsen, Helge, Søchting, Ulrik & Mortensen, L., 1991, Danmark: Energiministeriets Forskningsudvalg.Research output: Book/Report › Book › Research
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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, Helge, Albert, K. & N. Mikkelsen, T., 2004, 12 p.Research output: Book/Report › Report › Communication
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Monitoring effects of UV-B radiation on high arctic vegetation
Albert, K. R., Ro-Poulsen, Helge, 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. 68-70Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Communication
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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
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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. 73-79Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
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Ozone pollution and ozone biomonitoring in European cities Part II. Ozone-induced plant injury and its relationship with descriptors of ozone pollution
Klumpp, A., Ansel, W., Klumpp, G., Vergne, P., Sifakis, N., Sanz, M. J., Rasmussen, S., Ro-Poulsen, Helge, Ribas, A., Penuelas, J., Kambezidis, H., He, S., Garrec, J. P. & Calatayud, V., 2006, In: Atmospheric Environment. 40, 38, p. 7437-7448Research output: Contribution to journal › Journal article › Research › peer-review
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Ozone pollution and ozone biomonitoring in European cities. Part I: Ozone concentrations and cumulative exposure indices at urban and suburban sites
Klumpp, A., Ansel, W., Klumpp, G., Calatayud, V., Garrec, J. P., He, S., Penuelas, J., Ribas, A., Ro-Poulsen, Helge, Rasmussen, S., Sanz, M. J. & Vergne, P., 2006, In: Atmospheric Environment. 40, 40, p. 7963-7974Research output: Contribution to journal › Journal article › Research › peer-review
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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
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Physiology of the Norway spruce trees growing on the danish EXMAN site
Mikkelsen, T. N. & Ro-Poulsen, Helge, 1993, Experimental Manipulations of biota and biogeochemical cycling in Ecosystems. Ecosystems Research Report 4. Brussels, p. 244-246Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
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Plant and soil responses in ecosystem manipulation experiments
Boesgaard, K., Mathiesen, K., Albert, K., Ro-Poulsen, Helge, Schmidt, N. M. & Michelsen, Anders, 2009, ZACKENBERG ECOLOGICAL RESEARCH OPERATIONS (ZERO): 14th Annual Report 2008. Jensen, L. M. & Rasch, M. (eds.). Aarhus University: National Environmental Research Institute, p. 88-89Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Communication
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Plant eco-physiological response patterns to summer drought, elevated CO2 and warming in a natural temperate heath ecosystem: Ecological Society of America, 93rd ESA annual meeting August 3-8, Milwaukee, Wisconsin
Albert, K., N. Mikkelsen, T., Ro-Poulsen, Helge & Michelsen, Anders, 2008, 93rd ESA Annual Meeting Sunday, August 3 -Friday, August 8, 2008. The Midwest Airlines Center - Milwauke, Wisconsin.Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research
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Plant eco-physiological response patterns to summer drought, elevated CO2, and warming in a semi-natural temperate heath ecosystem
Ro-Poulsen, Helge, Albert, K., Mikkelsen, T. N. & Michelsen, Anders, 2008.Research output: Contribution to conference › Conference abstract for conference › Research
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Reduced N cycling in response to elevated CO2, warming, and drought in a Danish heathland
Larsen, K. S., Andresen, L. C., Beier, C., Jonasson, S. E., Albert, K. R., Ambus, P. L., Arndal, M. F., Carter, M. S., Christensen, S., Holmstrup, M., Ibrom, A., Nielsen, J. K., van der Linden, L., Maraldo, K., Michelsen, A., Mikkelsen, T. N., Pilegaard, K., Priemé, A., Ro-Poulsen, H., Schmidt, I. K. & 2 others, , 2011, Nitrogen & global change: key findings - future challenges. 2 p.Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research
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Reduced N cycling in response to elevated CO2, warming, and drought in a Danish heathland: synthesizing results of the CLIMAITE project after two years of treatments
Larsen, K. S., Andresen, L. C., Beier, C., Jonasson, S. E., Albert, K. A., Ambus, P. L., Arndal, M. F., Carter, M. S., Christensen, S., Holmstrup, M., Ibrom, A., Nielsen, J. K., Van der Linden, L., Maraldo, K., Michelsen, A., Mikkelsen, T. N., Pilegaard, K., Priemé, A., Ro-Poulsen, H., Schmidt, I. K. & 2 others, , 2011, In: Global Change Biology. 17, 5, p. 1884-1899 16 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Reduction of molecular gas diffusion through gaskets in leaf gas exchange cuvettes by leaf-mediated pores
Boesgaard, K. S., Mikkelsen, T. N., Ro-Poulsen, Helge & Ibrom, A., 2013, In: Plant, Cell and Environment. 36, 7, p. 1352-1362 11 p.Research output: Contribution to journal › Journal article › Research › peer-review
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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, Helge & Mikkelsen, T. N., 2004, In: Arctic, Antarctic, and Alpine Research. 36, p. 363-368Research output: Contribution to journal › Journal article › Research › peer-review
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Responses of carbon and water fluxes following drought events in combinations with warming and elevated CO2
Selsted, M. B., Albert, K., Ambus, Per Lennart, Michelsen, Anders, Ro-Poulsen, Helge, Mikkelsen, T. N. & Ibrom, A., 2009, In: Metlan Tyoraportteja. p. 144Research output: Contribution to journal › Conference abstract in journal › Research
- Published
Solar UV-B effects on PSII performance in Betula nana are influenced by PAR level and reduced by EDU: results of a 3-year experiment in the High Arctic
Albert, K. R., Mikkelsen, T. N., Ro-Poulsen, Helge, Arndal, M. F., Boesgaard, K. S., Michelsen, Anders, Bruhn, D. & Schmidt, N. M., 2012, In: Physiologia Plantarum. 145, 3, p. 485-500 16 p.Research output: Contribution to journal › Journal article › Research › peer-review
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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)
Albert, K., Rinnan, R., Ro-Poulsen, Helge, Mikkelsen, T., Håkansson, K., F. Arndal, M. & Michelsen, Anders, 2008, New York: Elsevier. 421 p. (Advances in Ecological Research, Vol. 40).Research output: Book/Report › Anthology › Research › peer-review
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Studies of Plant Responses to UV-B radiation 2007
Albert, K., Boesgaard, K., Ro-Poulsen, Helge, N. Mikkelsen, T., Michelsen, Anders & M. Schmidt, N., 2008, Zackenberg Ecological Research Operations, 13th Annual Report, 2007. Copenhagen) , Danish Polar Center, Danish Agency for Science, Technology and Innovation, Ministry of Science, Technology and Innovation. klitgaard, A. B. & Rasch, M. (eds.). Danish Polar Center, Danish Agency for Science, Technology and Innovation, Ministry of Science, Technology and Innovation, Copenhagen: Danish Polar Center, p. 80-81Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Communication
- Published
Studying effects of current UV-fluxes on high arctic vegetation (UV-B exclusion experiments)
Albert, K., Arndal, M. F., Michelsen, Anders, Tamstorf, M., Ro-Poulsen, Helge & N. Mikkelsen, T., 2006, Zackenberg Ecological Research Operations 11th Annual Report, 2005: Copenhagen, Danish Polar Center, Ministry of Science, Technology andInnovation, 2006. Klitgaard, A. B., Rasch, M. & Caning, K. (eds.). Danish Polar Center, p. 90-91Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication
- Published
Temperate heath plant response to dry conditions depends on growth strategy and less on physiology
Albert, K. R., Nielsen, Jane Kongstad, Schmidt, Inger Kappel, Ro-Poulsen, Helge, Mikkelsen, T. N., Michelsen, Anders, Linden, L. V. D. & Beier, Claus, 2012, In: Acta Oecologica. 45, p. 79-87 9 p.Research output: Contribution to journal › Journal article › Research › peer-review
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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
Albert, K., Ro-Poulsen, Helge, N. Mikkelsen, T., Michelsen, Anders, Beier, C., Jonasson, S. E., Ambus, Per Lennart, Schmidt, Inger Kappel, Holmstrup, M., Priemé, Anders & Christensen, Søren, 2006.Research output: Contribution to conference › Conference abstract for conference › Research
- Published
The shift in plant species composition in a subarctic mountain birch forest floor due to climate change would modify the biogenic volatile organic compound mission profile
Faubert, P., Tiiva, P., Michelsen, Anders, Rinnan, Åsmund, Ro-Poulsen, Helge & Rinnan, Riikka, 2012, In: Plant and Soil. 352, 1-2, p. 199-215 17 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Tradescantia micronucleus test indicates genotoxic potential of traffic emissions in European cities.
Klumpp, A., Ansel, W., Klumpp, G., Calatayud, V., Garrec, J. P., He, S., Penuelas, J., Ribas, A., Ro-Poulsen, Helge, Rasmussen, S., Sanz, M. J. & Vergne, P., 2006, In: Environmental Pollution. 139, 3, p. 515-522Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Unpredictable responses to interactions between climatic drivers: Impact of warming, elevated CO2, drought and their combinations on photosynthesis and growth patterns of heath plants
Ro-Poulsen, Helge, Albert, K., Michelsen, Anders, Mikkelsen, T. N. & Beier, C., 2009, In: Metlan Tyoraportteja. p. 346Research output: Contribution to journal › Conference abstract in journal › Research
- Published
Up-scaling of water use efficiency from leaf to canopy as based on leaf gas exchange relationships and the modeled in-canopy light distribution
Linderson, M., Mikkelsen, T. N., Ibrom, A., Lindroth, A., Ro-Poulsen, Helge & Pilegaard, K., 2012, In: Agricultural and Forest Meteorology. 152, p. 201-211 11 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Volatile organic compound emissions in three high arctic heath types, and the influence of climate change.
Michelsen, Anders, Burchard, S., Faubert, P., Rinnan, Riikka, Ro-Poulsen, Helge & Schmidt, N. M., 2010, Zackenberg Ecological Research Operations, 15th Annual Report, 2009. . Jensen, L. M. & Rasch, M. (eds.). National Environmental Research Institute, Aarhus University: Aarhus Universitetsforlag, p. 105-106Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Communication
- Published
Warming, shading and a moth outbreak reduce tundra carbon sink strength dramatically by changing plant cover and soil microbial activity
Dahl, M. B., Priemé, Anders, Brejnrod, A. D., Brusvang, P., Lund, M., Nymand, J., Kramshøj, M., Ro-Poulsen, Helge & Haugwitz, M. S., 22 Nov 2017, In: Scientific Reports. 7, 13 p., 16035.Research output: Contribution to journal › Journal article › Research › peer-review
ID: 7631
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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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Ambient UV-B radiation decreases photosynthesis in high arctic Vaccinium uliginosum.
Research output: Contribution to journal › Journal article › Research › peer-review
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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