Ib Johnsen

Ib Johnsen

Associate professor emeritus

Current research

Terrestrial, natural ecosystems in NW Europe; heathlands, ombrotrophic mires, grasslands & forests; air pollution impact on vegetation structure and dynamics; biological indication and monitoring of environmental pollution; UV-B effects on high arctic heath vegetation; ecological consequences of global climate change (green-house effect, ozone layer depletion).

Selected publications

  1. Published

    Epifyterne på træerne på Æbelø

    Johnsen, I., 2000, .. aage V. Jensens Fonde, p. 81-85

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearch

  2. Published

    Air pollution problems

    Johnsen, I., 2000, Principles of Pollution Abatement. Oxford, UK: Elsevier, p. 357-377

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearch

  3. Published

    Indications of UV-B sensitivity in the lichen Cladonia mitis

    Johnsen, I. & Heide-Jørgensen, H., 1993, Proceedings of the first European symposium on effects of enviromental UV radiation, Munich 27-29 October 1993. Bruxelles: Commission of the European Communities

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearch

  4. Published

    Danmarks natur og den naturvidenskabelige forskning

    Johnsen, I., 2000, Redegørelse fra NATFAK til Forskningsministeren og Undervisningsministeren, bilag B. p. 5-5

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearch

  5. Published

    Ecosystem vulnerability to climate change in Greenland and the Faroe Islands

    Heide-Jørgensen, H. & Johnsen, I., 1997, In : Arbejdsrapport fra Miljøstyrelsen (Working report). 97, p. 1-266

    Research output: Contribution to journalJournal articleResearch

  6. Published

    The lichen-rich coastal heath vegetation on the isle of Anholt, Denmark - description, history and development

    Christensen, S. & Johnsen, I., 2001, In : Journal of Coastal Conservation. 7, p. 1-12 12 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  7. Published

    Analysis of surface structures of Cladonia mitis podetia in historic and recent collections from Greenland

    Heide-Jørgensen, H. & Johnsen, I., 1995, In : Canadian Journal of Botany. 73, 3, p. 457-464

    Research output: Contribution to journalJournal articleResearchpeer-review

  8. Published

    The effects of UV-B radiation on European heathland species

    Björn, L. O., Callaghan, T. V., Johnsen, I., Lee, J. A., Manetas, Y., Paul, N. D., Sonesson, M., Wellburn, A. R., Coop, D., Heide-Jørgensen, H., Gehrke, C., Gwynn-Jones, D., Johanson, U., Kyparissis, A., Levizou, E., Nikolopoulos, D., Petropoulou, Y. & Stephanou, M., 1997, In : Plant Ecology. 128, 1-2, p. 253-264

    Research output: Contribution to journalJournal articleResearchpeer-review

  9. Published

    Analysis of surface structures in Cladonia mitis podetia in historical and recent collections from Greenland

    Heide-Jørgensen, H. & Johnsen, I., 1995, Effects of UV-B and ozone on northern forest. Helsinki: Nordic Council of Ministers, p. 56

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearch

  10. Published

    Botanical Investigations in the Thule Air Base area

    Johnsen, I., 2004, Baseline Ecological Survey, Thule Air Base Zological and Botanical Inventory of the Thule Air Base and North Star Bay. København, p. 40

    Research output: Chapter in Book/Report/Conference proceedingReport chapterResearch

  11. Published

    Nitrogen limitation in the coastal heath at Anholt, Denmark

    Johnsen, I., Christensen, S. & Riis-Nielsen, T., 2014, In : Journal of Coastal Conservation. 18, 4, p. 369-382 14 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  12. Published

    Restoration of dune habitats along the Danish west coast, revised version August 2006. Final report concerning LIFE project LIFE02/NAT/DK/8584. HS Jensen (red.)

    Johnsen, I., Riis-Nielsen, T., Christensen, S. N. & Petersen, M. R., 2006, København. 70 p.

    Research output: Book/ReportReportCommunication

  13. Published

    Rhynchostegium megapolitanum (Web. et Mohr) B.S.G.-A rare bryophyte in dune ecosystems of Zealand, Denmark

    Johnsen, I., 2014, In : American Journal of Plant Sciences. 5, 9, p. 1378-1383 6 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

ID: 10401