Anders Michelsen

Anders Michelsen

Professor


  1. 1990
  2. Published

    Mycorrhizal symbiosis in Acacia-Commiphora bushland in Somalia and the significance of VA-mycorrhizal fungi for re-vegetation of degraded semi-arid areas

    Michelsen, Anders & Rosendahl, Søren, 1990, In: Mitteilungen aus dem Institut für Allgemeine Botanik, Hamburg. 23a, p. 387-394

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Published

    Propagule density of VA-mycorrhizal fungi in semi-arid bushland in Somalia

    Michelsen, Anders & Rosendahl, Søren, 1990, In: Agriculture, Ecosystems & Environment. 29, p. 295-301

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. Published

     The effect of VA mycorrhiza, phosphorus and drought stress on the growth of Acacia nilotica and Leucaena leucocephala seedlings

    Michelsen, Anders & Rosendahl, Søren, 1990, In: Plant and Soil. 124, p. 7-13

    Research output: Contribution to journalJournal articleResearchpeer-review

  5. 1992
  6. Published

    Aspects of nutrient cycling in three plantations and a natural forest in Ethiopia

    Michelsen, Anders, Friis, Ib & Nigatu, L., 1992, Sustainable Development in the Sahel. - Proceedings of the 4th Sahel Workshop, 6-8 January 1990. AAU Reports 29: botanik, næringskredsløb, plantager, skov, løvfald, nedbrydning, Etiopien. Aarhus: Aarhus Universitetsforlag, p. 99-101

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

  7. Published

    Mycorrhiza and root nodulation in tree seedlings from five nurseries in Ethiopia and Somalia

    Michelsen, Anders, 1992, In: Forest Ecology and Management. 48, 3-4, p. 335-344 10 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  8. 1993
  9. Published

    Allelopathy in agroforestry systems: the effects of leaf extracts ofCupressus lusitanica and threeEucalyptus spp. on four Ethiopian crops

    Lisanework N. & Michelsen, Anders, 1993, In: Agroforestry Systems. 21, 1, p. 63-74

    Research output: Contribution to journalJournal articleResearchpeer-review

  10. Published

    Ecological effects of fuelwood plantations in Ethiopia

    Friis, Ib & Michelsen, Anders, 1993, Development Experience in the Sahel. - Proc. of the third Sahel Workshop, 7th-9th of January 1991. Humlebæk, Denmark: Danida Forest Seed Centre, p. 106-107

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

  11. Published

    Growth improvement of Ethiopian acacias by addition of vesicular-arbuscular mycorrhizal fungi or roots of native plants to non-sterile nursery soil

    Michelsen, Anders, 1993, In: Forest Ecology and Management. 59, p. 193-206

    Research output: Contribution to journalJournal articleResearchpeer-review

  12. Published

    Impacts of tree plantations in the Ethiopian highland on soil fertility, shoot and root growth, nutrient utilisation and mycorrhizal  colonisation

    Michelsen, Anders, Lisanework N. & Friis, Ib, 1993, In: Forest Ecology and Management. 61, p. 299-324

    Research output: Contribution to journalJournal articleResearchpeer-review

  13. Published

    The mycorrhizal status of vascular epiphytes in Bale Mountains National Park, Ethiopia

    Michelsen, Anders, 1993, In: Mycorrhiza. 4, p. 11-15

    Research output: Contribution to journalJournal articleResearchpeer-review

  14. 1994
  15. Published

    Litterfall and nutrient release by decomposition in three plantations compared to a natural forest in the Ethiopian highland

    Lisanework N. & Michelsen, Anders, 1994, In: Forest Ecology and Management. 65, p. 149-164

    Research output: Contribution to journalJournal articleResearchpeer-review

  16. Published

    The influence of vesicular-arbuscular mycorrhizal fungi on the nitrogen fixation of nursery-grown Ethiopian acacias estimated by the 15N natural abundance method

    Michelsen, Anders & Sprent, J. I., 1994, In: Plant and Soil. 160, p. 249-257

    Research output: Contribution to journalJournal articleResearchpeer-review

  17. 1995
  18. Published

    Inhibition of growth and effects on nutrient uptake of arctic graminoids by leaf extracts - allelopathy or resource competition between plants and microbes?

    Michelsen, Anders, Schmidt, Inger Kappel, Jonasson, S. E., Dighton, J., Jones, H. E. & Callaghan, T. V., 1995, In: Oecologia. 103, p. 407-418

    Research output: Contribution to journalJournal articleResearchpeer-review

  19. 1996
  20. Published

    Comparisons of understorey vegetation and soil fertility in plantations and adjacent natural forests in the Ethiopian highlands

    Michelsen, Anders, Lisanework N., Friis, Ib & Holst, N., 1996, In: Journal of Applied Ecology. 33, p. 627-642

    Research output: Contribution to journalJournal articleResearchpeer-review

  21. Published

    Effects of carbohydrate amendments on  nutrient partitioning, plant and microbial performance of a grassland-shrub ecosystem

    Jonasson, S. E., Vestergaard, P., Jensen, M. & Michelsen, Anders, 1996, In: Oikos. 75, p. 220-226

    Research output: Contribution to journalJournal articleResearchpeer-review

  22. Published

    Leaf 15N abundance of subarctic plants provides field evidence that ericoid, ectomycorrhizal and non- and arbuscular mycorrhizal species access different sources of soil nitrogen

    Michelsen, Anders, Schmidt, Inger Kappel, Jonasson, S. E., Quarmby, C. & Sleep, D., 1996, In: Oecologia. 105, p. 53-63

    Research output: Contribution to journalJournal articleResearchpeer-review

  23. Published

    Microbial biomass C, N and P in two arctic soils and responses to addition of NPK fertilizer and sugar: Implications for plant nutrient uptake

    Jonasson, S. E., Michelsen, Anders, Schmidt, Inger Kappel, Nielsen, E. V. & Callaghan, T. V., 1996, In: Oecologia. 106, p. 507-515

    Research output: Contribution to journalJournal articleResearchpeer-review

  24. Published

    Nutrient cycling in Subarctic and Arctic ecosystems, with special reference to the Abisko and Tornetrask region

    Jonasson, S. & Michelsen, Anders, 1996, Plant Ecology in the Subarctic Swedish Lapland . p. 45-52 8 p. (Ecological Bulletins - Sweden).

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

  25. Published

    Plant nutrition and nutrient cycling in the Subarctic, with special reference to the Abisko and Torneträsk area

    Michelsen, Anders & Jonasson, S. E., 1996, Ecological Bullletins. Vol. 45. p. 45-52

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

  26. Published

    Selection of appropriate species and management methods in tree planting: case studies from Ethiopia

    Friis, Ib & Michelsen, Anders, 1996, The Sahel - International Environmental Conventions, Health and Environment, Afforestation and Environment. Serien C. Occacional Papers nr. 3. København, p. 101-117

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

  27. Published

    Shoot biomass, d13C,  nitrogen and chlorophyll responses of two arctic dwarf-shrubs to in situ shading, nutrient application and warming simulating climatic change

    Michelsen, Anders, Jonasson, S. E., Sleep, D., Havström, M. & Callaghan, T. V., 1996, In: Oecologia. 105, p. 1-12

    Research output: Contribution to journalJournal articleResearchpeer-review

  28. 1997
  29. Published

    Carbon dioxide and methane exchange of a subarctic heath in response to climate change related environmental manipulations

    Christensen, T. R., Michelsen, Anders, Jonasson, S. E. & Schmidt, Inger Kappel, 1997, In: Oikos. 79, p. 34-44

    Research output: Contribution to journalJournal articleResearchpeer-review

  30. Published

    Effects of labile soil carbon on nutrient partitioning between an arctic graminoid and microbes

    Schmidt, Inger Kappel, Michelsen, Anders & Jonasson, S. E., 1997, In: Oecologia. Vol. 112, p. 557-565

    Research output: Contribution to journalJournal articleResearchpeer-review

  31. Published

    Effects of shading, nutrient application and warming on leaf growth and shoot densities of dwarf shrubs in two arctic-alpine plant communities

    Graglia, E., Jonasson, S. E., Michelsen, Anders & Schmidt, Inger Kappel, 1997, In: Ecoscience. 4 (2), p. 191-198

    Research output: Contribution to journalJournal articleResearchpeer-review

  32. Published

    Effects on plant production after addition of labile carbon to arctic/alpine soils

    Schmidt, Inger Kappel, Michelsen, Anders & Jonasson, S. E., 1997, In: Oecologia. Vol. 112, p. 305-313

    Research output: Contribution to journalJournal articleResearchpeer-review

  33. Published

    Elevated atmospheric CO2 affects decomposition of Festuca vivipara (L.) Sm. litter and roots in experiments simulating environmental change in two contrasting arctic ecosystems

    Robinson, C. H., Michelsen, Anders, Lee, J. A., Whitehead, S. J., Callaghan, T. V., Jonasson, S. E. & Press, M. C., 1997, In: Global Change Biology. 3, p. 37-49

    Research output: Contribution to journalJournal articleResearchpeer-review

  34. 1998
  35. Published

    Environmental controls on soil respiration in the Eurasian and Greenlandic Arctic

    Christensen, T. R., Jonasson, S. E., Michelsen, Anders, Callaghan, T. V. & Havström, M., 1998, In: Journal of Geophysical Research - Oceans. 103, D22, p. 29015-29021

    Research output: Contribution to journalJournal articleResearchpeer-review

  36. Published

    Soil nematode fauna of a subarctic heath: Potential nematicidal action of plant leaf extracts

    Ruess, L., Michelsen, Anders, Schmidt, Inger Kappel, Jonasson, S. E. & Dighton, J., 1998, In: Applied Soil Ecology. 7, p. 111-124

    Research output: Contribution to journalJournal articleResearchpeer-review

  37. Published

    Vascular plant 15N natural abundance in heath and forest tundra ecosystems is closely correlated with presence and type of mycorrhizal fungi in roots

    Michelsen, Anders, Quarmby, C., Sleep, D. & Jonasson, S. E., 1998, In: Oecologia. 115, p. 406-418

    Research output: Contribution to journalJournal articleResearchpeer-review

  38. 1999
  39. Published

    Coupling of nutrient cycling and carbon dynamics in the Arctic, integration of soil microbial and plant processes

    Jonasson, S. E., Michelsen, Anders & Schmidt, Inger Kappel, 1999, In: Applied Soil Ecology. 11, p. 135-146

    Research output: Contribution to journalJournal articleResearchpeer-review

  40. Published

    Exchange of CH4 and N2O in a subarctic heath soil: effects of inorganic N and P and amino acid addition

    Christensen, T. R., Michelsen, Anders & Jonasson, S. E., 1999, In: Soil Biology & Biochemistry. 31, p. 637-641

    Research output: Contribution to journalJournal articleResearchpeer-review

  41. Published

    Mineralization and microbial immobilization of N and P in arctic soils in relation to season, temperature and nutrient amendment

    Schmidt, Inger Kappel, Jonasson, S. E. & Michelsen, Anders, 1999, In: Applied Soil Ecology. 11, p. 147-160

    Research output: Contribution to journalJournal articleResearchpeer-review

  42. Published

    Responses in microbes and plants to changed temperature, nutrient and light regimes in the arctic

    Jonasson, S. E., Michelsen, Anders, Schmidt, Inger Kappel & Nielsen, E. V., 1999, In: Ekologia. 80, p. 1828-1843

    Research output: Contribution to journalJournal articleResearchpeer-review

  43. Published

    Simulated climate change affecting microorganisms, nematode density and biodiversity in subarctic soils

    Ruess, L., Michelsen, Anders, Schmidt, Inger Kappel & Jonasson, S. E., 1999, In: Plant and Soil. 212, p. 63-73

    Research output: Contribution to journalJournal articleResearchpeer-review

  44. Published

    Simulated climate change in subarctic soils: responses in nematode species composition and dominance structure

    Ruess, L., Michelsen, Anders & Jonasson, S. E., 1999, In: Nematology. 1, p. 513-526

    Research output: Contribution to journalJournal articleResearchpeer-review

  45. Published

    Differential responses of grass and a dwarf shrub to long-term changes in soil microbial biomass C, N and P following factorial addition of NPK fertilizer, fungicide and labile carbon to a heath

    Michelsen, Anders, Graglia, E., Schmidt, Inger Kappel, Jonasson, S., Sleep, D. & Quarmby, C., 1 Sep 1999, In: New Phytologist. 143, 3, p. 523-538 16 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  46. 2000
  47. Published

    Long-term manipulation of the microbes and microfauna of two subarctic heaths by addition of fungicide, bactericide, carbon and fertilizer

    Schmidt, Inger Kappel, Ruess, L., Bååth, E., Michelsen, Anders, Ekelund, Flemming & Jonasson, S. E., 2000, In: Soil Biology & Biochemistry. 32, 5, p. 707-720 14 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  48. Published

    Nordic Empetrum dominated ecosystems: Function and susceptibility to environmental changes

    Tybirk, K., Nilsson, M., Michelsen, Anders, Kristensen, H. L., Shevtsova, A., Strandberg, M. T., Johansson, M., Nielsen, K. E., Riis-Nielsen, T., Strandberg, B. & Johnsen, I., 2000, In: Ambio. 29, p. 90-97

    Research output: Contribution to journalJournal articleResearchpeer-review

  49. 2001
  50. Published

    Assimilation and isotopic fractionation of nitrogen by mycorrhizal and nonmycorrhizal subarctic plants

    Emmerton, K. S., Callaghan, T. V., Jones, H. E., Leake, J. R., Michelsen, Anders & Read, D. J., 2001, In: New Phytologist. 151, p. 513-524

    Research output: Contribution to journalJournal articleResearchpeer-review

  51. Published

    Assimilation and isotopic fractionation of nitrogen by mycorrhizal fungi

    Emmerton, K. S., Callaghan, T. V., Jones, H. E., Leake, J. R., Michelsen, Anders & Read, D. J., 2001, In: New Phytologist. 151, p. 503-511

    Research output: Contribution to journalJournal articleResearchpeer-review

  52. Published

    Effects of environmental perturbations on abundance of subarctic plants after three, seven and ten years of treatments

    Graglia, E., Jonasson, S. E., Michelsen, Anders & Schmidt, Inger Kappel, 2001, In: Ecography. 24, 1, p. 5-12 8 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  53. Published

    Environmental control and intersite varations of phenolics in Betula nana in tundra ecosystems

    Graglia, E., Julkunen-Tiitto, R., Shaver, G. R., Schmidt, I. K., Jonasson, S. E. & Michelsen, Anders, 2001, In: New Phytologist. 151, p. 227-236

    Research output: Contribution to journalJournal articleResearchpeer-review

  54. Published

    Global change and arctic ecosystems: is lichen decline a function of increases in vascular plant biomass?

    Cornelissen, J. H. C., Callaghan, T. V., Alatalo, J. M., Michelsen, A., Graglia, E., Hartley, A. E., Hik, D. S., Hobbie, S. E., Press, M. C., Robinson, C. H., Henry, G. H. R., Shaver, G. R., Phoenix, G. K., Gwynn Jones, D., Jonasson, S. E., Chapin, F. S., Molau, U., Neill, C., Lee, J. A., Melillo, J. M. & 2 others, Sveinbjörnsson, B. & Aerts, R., 2001, In: Journal of Ecology. 89, p. 984-994

    Research output: Contribution to journalJournal articleResearchpeer-review

  55. Published

    Manipulations of a microbial based soil food web at two arctic sites - evidence of species redundancy among the nematode fauna?

    Ruess, L., Schmidt, Inger Kappel, Michelsen, Anders & Jonasson, S. E., 2001, In: Applied Soil Ecology. 17, 1, p. 19-30 12 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  56. Published

    Respiration of recently-fixed plant carbon dominates mid-winter ecosystem CO2 production in sub-arctic heath tundra

    Grogan, P., Illeris, L., Michelsen, Anders & Jonasson, S. E., 2001, In: Climatic Change. 50, p. 129-142

    Research output: Contribution to journalJournal articleResearchpeer-review

  57. Published

    Responses in plant, soil inorganic and microbial nutrient pools to experimental fire, ash and biomass addition in a woodland savanna

    Jensen, M., Michelsen, Anders & Gashaw, M., 2001, In: Oecologia. 128, p. 85-93

    Research output: Contribution to journalJournal articleResearchpeer-review

  58. Published

    Savannebrande i Afrikas Sudan-Guinea-bælte. Miljøproblem eller værktøj i naturressourceforvaltningen?

    Rasmussen, Kjeld, Christensen, S., Friis, I., Kjøller, A., Michelsen, Anders, Nielsen, T. T. & Saarnak, C. F. L., 2001, In: Den Ny Verden - Tidsskrift for internationale studier. 34 (1), p. 7-26

    Research output: Contribution to journalJournal articleResearch

  59. Published

    Savannebrande i Afrikas Sudan-Guineabælte

    Rasmussen, Kjeld, Christensen, Søren, Friis, Ib, Kjøller, A. H., Michelsen, Anders, Nielsen, T. T. & Saarnak, C. F. L., 2001, In: Den ny verden. 1, p. 7-26

    Research output: Contribution to journalJournal articleResearch

  60. Published

    Soil seed bank dynamics and above-ground cover of a dominant grass, Hyparrhenia confinis, in regularly burned savanna types in Gambella, western Ethiopia

    Gashaw, M. & Michelsen, Anders, 2001, In: Biologiske Skrifter (Biological Series). 54, p. 389-397

    Research output: Contribution to journalJournal articleResearchpeer-review

  61. Published

    Environmental control and intersite variations of phenolics in Betula nana in tundra ecosystems

    Graglia, E., Julkunen-Tiitto, R., Shaver, G. R., Schmidt, Inger Kappel, Jonasson, S. & Michelsen, Anders, 19 Jul 2001, In: New Phytologist. 151, 1, p. 227-236 10 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

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