Søren Christensen

Søren Christensen

Guest Researcher

ORCID: 0000-0002-7067-5586

Publication year:
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  1. 2024
  2. Published

    Cadmium accumulation in organisms from a spruce plantation amended with wood ash - an environmental risk?

    Ekelund, Flemming, Cruz-Paredes, C., Jørgensen, Christian Hviid Friis, Vestergård, M., Rasmussen, K. R., Mortensen, Louise Hindborg, Kindtler, Nikolaj Lunding, Rønn, Regin, Christensen, Søren, Johansen, Jesper Liengaard & Kjøller, Rasmus, 2024, In: Trees, Forests and People. 15, 6 p., 100499.

    Research output: Contribution to journal › Journal article › Research › peer-review

  3. Published

    Global N2O emissions from our planet: Which fluxes are affected by man, and can we reduce these?

    Christensen, Søren & Rousk, Kathrin, 2024, In: iScience. 27, 2, 10 p., 109042.

    Research output: Contribution to journal › Review › Research › peer-review

  4. 2021
  5. Published

    Bacteria Respond Stronger Than Fungi Across a Steep Wood Ash-Driven pH Gradient

    Cruz-Paredes, C., Bang-Andreasen, T., Christensen, Søren, Ekelund, Flemming, Frøslev, Tobias Guldberg, Jacobsen, C. S., Johansen, Jesper Liengaard, Mortensen, Louise Hindborg, Rønn, Regin, Vestergård, M. & Kjøller, Rasmus, 2021, In: Frontiers in Forests and Global Change. 4, 10 p., 781844.

    Research output: Contribution to journal › Journal article › Research › peer-review

  6. Published

    Increased Likelihood of High Nitrous Oxide (N2O) Exchange in Soils at Reduced Microbial Diversity

    Christensen, Søren, Hol, W. H. G., Kurm, V. & Vestergård, M., 2021, In: Sustainability. 13, 4, 8 p., 1685.

    Research output: Contribution to journal › Journal article › Research › peer-review

  7. Published

    The complexity of wood ash fertilization disentangled: Effects on soil pH, nutrient status, plant growth and cadmium accumulation

    Johansen, Jesper Liengaard, Nielsen, M. L., Vestergård, M., Mortensen, Louise Hindborg, Cruz-Paredes, C., Rønn, Regin, Kjøller, Rasmus, Hovmand, Mads Frederik, Christensen, Søren & Ekelund, Flemming, 2021, In: Environmental and Experimental Botany. 185, 9 p., 104424.

    Research output: Contribution to journal › Journal article › Research › peer-review

  8. 2019
  9. Published

    Wood ash effects on growth and cadmium uptake in Deschampsia flexuosa (Wavy hair-grass)

    Kindtler, Nikolaj Lunding, Ekelund, Flemming, Rønn, Regin, Kjøller, Rasmus, Hovmand, Mads Frederik, Vestergård, M., Christensen, Søren & Johansen, Jesper Liengaard, 2019, In: Environmental Pollution. p. 886-893 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  10. 2018
  11. Published

    Are nitrous oxide emissions and nitrogen fixation linked in temperate bogs?

    Rousk, Kathrin, Vestergård, M. & Christensen, Søren, 2018, In: Soil Biology & Biochemistry. 123, p. 74-79 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  12. 2017
  13. Published

    Does introduction of clover in an agricultural grassland affect the food base and functional diversity of Collembola?

    D'Annibale, A., Sechi, V., Larsen, T., Christensen, Søren, Krogh, P. H. & Eriksen, J., Sep 2017, In: Soil Biology and Biochemistry. 112, p. 165-176 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  14. Published

    Long-term and realistic global change manipulations had low impact on diversity of soil biota in temperate heathland

    Holmstrup, M., Damgaard, C., Schmidt, Inger Kappel, Arndal, M. F., Beier, Claus, Mikkelsen, T. N., Ambus, Per Lennart, Larsen, Klaus Steenberg, Pilegaard, K., Michelsen, Anders, Andresen, L. C., Haugwitz, M. S., Bergmark, L., Priemé, Anders, Zaitsev, A. S., Georgieva, S., Dam, M., Vestergård, M. & Christensen, Søren, 2017, In: Scientific Reports. 7, 11 p., 41388.

    Research output: Contribution to journal › Journal article › Research › peer-review

  15. Published

    Wood ash application increases pH but does not harm the soil mesofauna

    Qin, J., Hovmand, Mads Frederik, Ekelund, Flemming, Rønn, Regin, Christensen, Søren, Groot, G. A. D., Mortensen, Louise Hindborg, Skov, Simon & Krogh, P. H., 2017, In: Environmental Pollution. 224, p. 581-589 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  16. 2016
  17. Published

    Continuous measurements of nitrous oxide isotopomers during incubation experiments

    Winther, M. N., Balslev-Harder, D., Christensen, Søren, Priemé, Anders, Elberling, Bo, Crosson, E. & Blunier, Thomas, 2016, In: Biogeosciences. 15, p. 767-780 19 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  18. Published

    Enhanced priming of old, not new soil carbon at elevated atmospheric CO2

    Vestergård, M., Reinsch, S., Bengtson, P., Ambus, Per Lennart & Christensen, Søren, 2016, In: Soil Biology & Biochemistry. 100, p. 140-148 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  19. 2015
  20. Published

    Defoliation reduces soil biota - and modifies stimulating effects of elevated CO2

    Dam, M. & Christensen, Søren, 2015, In: Ecology and Evolution. 5, 21, p. 4840-4848 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  21. Published

    Intensive agriculture reduces soil biodiversity across Europe

    Tsiafouli, M. A., Thebault, E., Sgardelis, S. P., de Ruiter, P. C., van der Putten, W. H., Birkhofer, K., Hemerik, L., de Vries, F. T., Bardgett, R. D., Brady, M. V., Bjornlund, L., Jorgensen, H. B., Christensen, S., D' Hertefeldt, T., Hotes, S., Hol, W. H. G., Frouz, J., Liiri, M., Mortimer, S. R., Setala, H. & 6 others, Tzanopoulos, J., Uteseny, K., Pizl, V., Stary, J., Wolters, V. & Hedlund, K., 2015, In: Global Change Biology. 21, 2, p. 973-985 13 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  22. 2014
  23. Published

    Biological 12C-13C fractionation increases with increasing community-complexity in soil microcosms

    Yang, W., Magid, Jakob, Christensen, Søren, Rønn, Regin, Ambus, Per Lennart & Ekelund, Flemming, 2014, In: Soil Biology & Biochemistry. 69, p. 197-201 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  24. Published

    Soil microorganisms respond to five years of climate change manipulations and elevated atmospheric CO2 in a temperate heath ecosystem

    Haugwitz, M. S., Bergmark, L., Priemé, Anders, Christensen, Søren, Beier, Claus & Michelsen, Anders, 2014, In: Plant and Soil. 374, 1-2, p. 211-222 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  25. 2013
  26. Published

    Multi-factor climate change effects on insect herbivore performance

    Scherber, C., Gladbach, D. J., Andersen, K. S., Karsten, R. J., Schmidt, Inger Kappel, Michelsen, Anders, Albert, K. R., Larsen, Klaus Steenberg, Mikkelsen, T. N., Beier, Claus & Christensen, Søren, 2013, In: Ecology and Evolution. 3, 6, p. 1449–1460 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  27. Published

    Structural equation model on multi-factor climate change on herbivore survival and growth

    Scherber, C., Gladbach, D., Andersen, K. S., Karsten, R. J., Schmidt, Inger Kappel, Michelsen, Anders, Albert, K. R., Larsen, Klaus Steenberg, Mikkelsen, T. N., Beier, C. & Christensen, Søren, 2013

    Research output: Other contribution › Research

  28. 2012
  29. Published

    Disturbance promotes non-indigenous bacterial invasion in soil microcosms: analysis of the roles of resource availability and community structure

    Liu, M., Strandmark, L. B., Rønn, Regin, Christensen, Søren & Ekelund, Flemming, 2012, In: P L o S One. 7, 10, p. 1-6 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  30. Published

    Freezing eliminates efficient colonizers from nematode communities in frost-free temperate soils

    Dam, M., Madsen, M. V. & Christensen, Søren, 2012, In: Soil Biology & Biochemistry. 48, p. 167-174 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  31. Published

    Interactions between above- and belowground organisms modified in climate change experiments

    Andersen, K. S., Scherber, C., Gladbach, D., Beier, Claus, Mikkelsen, T. N. & Christensen, Søren, 2012, In: Nature Climate Change. 2, p. 805-808 4 p.

    Research output: Contribution to journal › Letter › Research › peer-review

  32. Published

    Land use alters the resistance and resilience of soil food webs to drought

    de Vries, F. T., Liiri, M. E., Strandmark, L. B., Bowker, M. A., Christensen, Søren, Setälä, H. M. & Bardgett, R. D., 2012, In: Nature Climate Change. 2, p. 276-280 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  33. Published

    Legacy effects of drought on plant growth and the soil food web

    de Vries, F., Liiri, M., Strandmark, L. B., Setälä, H., Christensen, Søren & Bardgett, R., 2012, In: Oecologia. 170, 3, p. 821-833 13 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  34. Published

    Nematodes and protozoa affect plants differently, depending on soil nutrient status

    Strandmark, L. B., Liu, M., Rønn, Regin, Christensen, Søren & Ekelund, Flemming, 2012, In: European Journal of Soil Biology. 50, p. 28-31 4 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  35. Published

    Specific antibiotics and nematode trophic groups agree in assessing fungal: bacterial activity in agricultural soil

    Christensen, Søren, Dam, M., Madsen, M. V., Petersen, S. O., Olesen, J. E. & Schjønning, P., 2012, In: Soil Biology & Biochemistry. 55, p. 17-19 3 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  36. Published

    Suppression of soil decomposers and promotion of long-lived, root herbivorous nematodes by climate change

    Andersen, K. S., Maraldo, K., Georgieva, S., Strandmark, L. B., Beier, Claus, Schmidt, Inger Kappel & Christensen, Søren, 2012, In: European Journal of Soil Biology. 52, p. 1-7 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  37. 2011
  38. Published

    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, Selsted, M. B. & Andersen, K. S., 2011, Nitrogen & global change: key findings - future challenges. 2 p.

    Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research

  39. Published

    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, Selsted, M. B. & Andersen, K. S., 2011, In: Global Change Biology. 17, 5, p. 1884-1899 16 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  40. Published

    Starved bacteria retain their size but lose culturability - lessons from a 5000 years old undisturbed A-horizon

    Vestergård, M., Ekelund, Flemming, Winding, A., Jacobsen, C. S. & Christensen, Søren, 2011, In: Soil Biology & Biochemistry. 43, 6, p. 1379-1382 4 p.

    Research output: Contribution to journal › Letter › Research › peer-review

  41. 2010
  42. Published

    Divergent composition but similar function of soil food webs of individual plants: plant species and community effects

    Bezemer, T. M., Fountain, M. T., Barea, J. M., Christensen, Søren, Dekker, S. C., Duyts, H., van Hal, R., Harvey, J. A., Hedlund, K., Maraun, M., Mikola, J., Mladenov, A. G., Robin, C., de Ruiter, P. C., Scheu, S., Setälä, H., Smilauer, P. & van der Putten, W. H., 2010, In: Ecology. 91, 10, p. 3027-36 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  43. 2009
  44. Published

    Empirical and theoretical challenges in aboveground-belowground ecology

    W.H. van der Putten, R.D. Bardgett, P.C. de Ruiter, W.H.G Hol, K.M. Meyer, T.M. Bezemer, Christensen, Søren, M.A. Bradford, M.B. Eppinga, T. Fukami, L. Hemerik, J. Molofsky, M. Schädler, C. Scherber, S.Y. Strauss, M. Vos, M. Vos & D.A. Wardle, 2009, In: Oecologia. 161, 1, p. 1-14

    Research output: Contribution to journal › Journal article › Research › peer-review

  45. Published

    Sustainable plant production in a changing world - a cross Faculty research network at KU

    Strandmark, L. B., Schjoerring, Jan K., Christensen, Søren, Nybroe, O., Pedersen, J. G. T., Eilenberg, Jørgen, Munk, Lisa, Rønn, Regin, Ciofu, Oana, Bruun, Sander & Ørum, Jens Erik, 2009.

    Research output: Contribution to conference › Poster › Research

  46. Published

    Sustainable plant production in a changing world - formation of a cross-faculty network

    Strandmark, L. B., Schjoerring, Jan K., Christensen, Søren, Nybroe, O., Torp, J., Eilenberg, Jørgen, Munk, Lisa, Rønn, Regin, Ciofu, Oana, Bruun, Sander & Ørum, Jens Erik, 2009, In: IOP Conference Series: Earth and Environmental Science. 6, Session 34, 2 p., 342014.

    Research output: Contribution to journal › Conference abstract in journal › Research

  47. 2008
  48. Published

    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, Riis-Nielsen, T., Ro-Poulsen, Helge, Andersen, K. S., Selsted, M., Sørensen, P., S. Larsen, K., S. Carter, M., Ibrom, A., Martinussen, Torben, Miglietta, F. & Sverdrup, H., 2008.

    Research output: Contribution to conference › Conference abstract for conference › Research

  49. Published

    Long-term organic farming fosters below and aboveground biota: Implications for soil quality, biological control and productivity

    Birkhofer, K., Bezemer, T., Bloem, J., Bonkowski, M., Christensen, Søren, Ekelund, Flemming, Fließbach, A., Hedlund, K., Mikola, J., Robin, C., Mäder, P., Setälä, H., Tatin-Froux, F., Van der Putten, W. & Scheu, S., 2008, In: Soil Biology & Biochemistry. 40, 9

    Research output: Contribution to journal › Journal article › Research › peer-review

  50. Published

    Rhizosphere bacterial community composition responds to arbuscular mycorrhiza, but not to reductions in microbial activity induced by foliar cutting

    Madsen, M. V., Henry, F., Rangel-Castro, J. I., Michelsen, Anders, Prosser, J. I. & Christensen, Søren, 2008, In: FEMS Microbiology Ecology. 64, 1, p. 78-89 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  51. 2007
  52. Published

    Decomposer biomass in the rhizosphere to assess rhizodeposition

    Christensen, Søren, Bjørnlund, L. & Madsen, M. V., 2007, In: Oikos. 116, 1, p. 65-74 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  53. Published

    Evidence for Transient increase of rhizodeposition  following a severe defoliation of Plantago arenaria

    Henry, F., Madsen, M. V. & Christensen, Søren, 2007, In: Soil Biology & Biochemistry.

    Research output: Contribution to journal › Journal article › Research › peer-review

  54. Published

    Microfaunal Interactions in the Rhizosphere, How Nematodes and Protozoa Link Above- and Belowground Processes. Chapter 3

    Griffiths, B. S., Christensen, Søren & Bonkowski, M., 2007, The Rhizosphere: An Ecological Perspective (Zoe C. Cardon and Julie L. Whitbeck eds.). U.S.: Academic Press, p. 51-71

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  55. Published

    Natural forest stand dynamics in time and space - synthesis of research in Suserup Skov, Denmark and perspectives for forest management

    Hahn, K., Emborg, J., Vesterdal, L., Christensen, Søren, Bradshaw, R. H. W. & Raulund-Rasmussen, K., 2007, In:  Ecological Bulletins. 52

    Research output: Contribution to journal › Journal article › Research › peer-review

  56. Published

    Nematode migration and nutrient diffusion between vetch and barley material in soil

    Christensen, Søren, Alphei, J., Madsen, M. V. & Vestergaard, P., 2007, In: Soil Biology & Biochemistry. 39, 7, p. 1410-1417 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  57. 2006
  58. Published

    Soil fauna communities and microbial respiration in high Arctic tundra soils at Zackenberg, Northeast Greenland

    Sørensen, L. I., Holmstrup, M., Maraldo, K., Christensen, Søren & Christensen, B., 2006, In: Polar Biology. 29, 3, p. 189-195

    Research output: Contribution to journal › Journal article › Research › peer-review

  59. Published

    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

  60. 2005
  61. Published

    Early decomposer assemblages of soil organisms in litterbags with vetch and rye roots

    Georgieva, S., Christensen, Søren, Petersen, H., Gjelstrup, P. & Thorup-Christensen, K., 2005, In: Soil Biology & Biochemistry. 37, 6, p. 1145-1155

    Research output: Contribution to journal › Journal article › Research › peer-review

  62. Published

    How does litter quality and site heterogeneity interact on decomposer food webs of a semi-natural forest?

    Strandmark, L. B. & Christensen, Søren, 2005, In: Soil Biology & Biochemistry. 37, 2, p. 203-213

    Research output: Contribution to journal › Journal article › Research › peer-review

  63. Published

    Nematode succession and microfauna-microorganism interactions during root residue decomposition

    Georgieva, S., Christensen, Søren & Andersen, K. S., 2005, In: Soil Biology & Biochemistry. 37, 10, p. 1763-1774

    Research output: Contribution to journal › Journal article › Research › peer-review

  64. 2004
  65. Published

    Aphid effects on rhizosphere microorganisms and microfauna depend more on barley growth phase than on soil fertilization

    Madsen, M. V., Strandmark, L. B. & Christensen, Søren, 2004, In: Oecologia. 141, 1, p. 84-93

    Research output: Contribution to journal › Journal article › Research › peer-review

  66. Published

    Distribution of protozoa in scots pine mycorrhizospheres

    Timonen, S., Christensen, Søren & Ekelund, Flemming, 2004, In: Soil Biology & Biochemistry. 36, p. 1987-1993

    Research output: Contribution to journal › Journal article › Research › peer-review

  67. Published

    Simulated herbivory effects on rhizosphere organisms in pea (Piusum sativum) depended om phosphate

    Techau, M. E. C., Bjørnlund, L. & Christensen, Søren, 2004, In: Plant and Soil. 264, p. 185-194

    Research output: Contribution to journal › Journal article › Research › peer-review

  68. Published

    Trophic interactions in changing landscapes: Responses of soil food webs

    Hedlund, K., Griffiths, B., Christensen, Søren, Scheu, S., Setala, H., Tscharntke, T. & Verhoef, H., 2004, In: Basic and Applied Ecology. 5, p. 495-503

    Research output: Contribution to journal › Journal article › Research › peer-review

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