Ib Johnsen

Ib Johnsen

Associate professor emeritus


  1. 2016
  2. Published

    Effects of weed harrowing frequency on beneficial arthropods, plants and crop yield. / Navntoft, Søren; Kristensen, Kristian; Johnsen, Ib; Jensen, Anne-Mette M.; Sigsgaard, Lene; Esbjerg, Peter.

    In: Agricultural and Forest Entomology, Vol. 18, No. 1, 2016, p. 59-67.

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. 2014
  4. Published

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

    In: American Journal of Plant Sciences, Vol. 5, No. 9, 2014, p. 1378-1383.

    Research output: Contribution to journalJournal articleResearchpeer-review

  5. Published

    Nitrogen limitation in the coastal heath at Anholt, Denmark. / Johnsen, Ib; Christensen, Steen; Riis-Nielsen, Torben.

    In: Journal of Coastal Conservation, Vol. 18, No. 4, 2014, p. 369-382.

    Research output: Contribution to journalJournal articleResearchpeer-review

  6. 2012
  7. Published

    The wild flora biodiversity in pesticide free bufferzones along old hedgerows. / Andresen, Louise C.; Nothlev, J.; Kristensen, K.; Navntoft, Søren; Johnsen, Ib.

    In: Journal of Environmental Biology, Vol. 33, No. 3, 2012, p. 565-572.

    Research output: Contribution to journalJournal articleResearchpeer-review

  8. 2011
  9. Published

    Blandt krone-epifytter i øjenhøjde på Store Løvklit i Kærgård Plantage. / Søchting, Ulrik; Hellensten, Helle S.; Smenge, Camille G. S. ; Thirslund, Karen B.; Lund, Frederik Malthe S.; Petersen, Claus Bo P. ; Johnsen, Ib.

    In: URT, Vol. 2011, No. 2, 05.2011, p. 74-79.

    Research output: Contribution to journalJournal articleResearch

  10. 2009
  11. Published

    Biological effects. / Johnsen, Ib.

    Air Pollution: from a local to a global perspective. ed. / Jes Fenger; Jens Christian Tjell. Royal Society of Chemistry, 2009. p. 363-389.

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

  12. Published

    Buffer zones for biodiversity of plants and arthropods : is there a compromise on width? / Navntoft, Søren; Sigsgaard, Lene; Nimgaard, Rasmus Bak; Esbjerg, Peter; Kristensen, Kristian; Andresen, Louise C.; Johnsen, Ib.

    Danish Ministry of the Environment, Environmental Protection Agency, 2009. 103 p. (Pesticides research; No. 127).

    Research output: Book/ReportReportResearch

  13. Published

    Bufferzoner på bare 6 m’s bredde : en fantastisk mulighed for at bringe noget natur tilbage i agerlandet. . / Esbjerg, Peter; Navntoft, Søren; Kristensen, Kristian; Andresen, Louise C.; Sigsgaard, Lene; Nimgaard, Rasmus Bak; Johnsen, Ib.

    Miljøstyrelsen, 2009. 5 p.

    Research output: Book/ReportBookCommunication

  14. Published

    Root uptake of lead by Norway spruce grown on 210Pb spiked soils. / Hovmand, Mads Frederik; Nielsen, S. P.; Johnsen, Ib.

    In: Environmental Pollution, Vol. 157, No. 2, 2009, p. 404-409.

    Research output: Contribution to journalJournal articleResearchpeer-review

  15. 2008
  16. Published

    Atmospheric heavy metal deposition accumulated in rural forest soils of southern Scandinavia. / Hovmand, Mads Frederik; Kemp, Kaare; Kystol, J.; Johnsen, Ib; Riis-Nielsen, Torben; Pacyna, J.M.

    In: Environmental Pollution, Vol. 155, No. 3, 2008, p. 537-541.

    Research output: Contribution to journalJournal articleResearchpeer-review

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