Niels Kroer

Niels Kroer

Head of Department


  1. 2004
  2. Published

    Plasmid transfer in aquatic environments. Molecular Microbial Ecology Manual

    Sørensen, Søren Johannes (ed.), Øregaard, G. (ed.), De Lipthay, J. R. (ed.) & Kroer, Niels (ed.), 2004, The Netherlands: Kluwer Academic Publishers.

    Research output: Book/ReportBookResearch

  3. 2003
  4. Published

    Plasmid transfer from Pseudomonas putida to the indigenous bacteria on alfalfa sprouts: Characterization, direct quantification, and in situ location of transconjugant cells

    Mølbak, L., Licht, T. R., Kvist, T., Kroer, Niels & Andersen, S. R., 1 Sep 2003, In: Applied and Environmental Microbiology. 69, 9, p. 5536-5542 7 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  5. 2001
  6. Effect of plant species on the kinetics of conjugal transfer in the rhizosphere and relation to bacterial metabolic activity

    Schwaner, N. E. & Kroer, Niels, 29 Dec 2001, In: Microbial Ecology. 42, 3, p. 458-465 8 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  7. Published

    Effect of genomic location on horizontal transfer of a recombinant gene cassette between Pseudomonas strains in the rhizosphere and spermosphere of barley seedlings

    Sengeløv, G., Kristensen, K. J., Sørensen, A. M. H., Kroer, Niels & Sørensen, Søren Johannes, 2001, In: Current Microbiology. 42, p. 160-167

    Research output: Contribution to journalJournal articleResearchpeer-review

  8. 2000
  9. Published

    A new method for determining the metabolic activity of specific bacterial populations in soil using tritiated leucine and immunomagnetic separation

    Sengeløv, G., Sørensen, Søren Johannes, Frette, L. & Kroer, Niels, 2000, In: Biology and Fertility of Soils. 32, 3, p. 202-208

    Research output: Contribution to journalJournal articleResearchpeer-review

  10. 1999
  11. Published

    Relations between bacterial nitrogen metabolism and growth efficiency in an estuarine and an open-water ecosystem

    Jørgensen, Niels O. G., Kroer, Niels, Coffin, R. B. & Hoch, M. P., 1999, In: Aquatic Microbial Ecology. 18, p. 247-261 15 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  12. 1998
  13. Published

    Effect of root exudates and bacterial metabolic activity on conjugal gene transfer in the rhizosphere of a marsch plant

    Kroer, Niels, Barkay, T., Sørensen, Søren Johannes & Weber, D., 1998, In: FEMS Microbiology Ecology. 25, p. 375-384

    Research output: Contribution to journalJournal articleResearch

  14. Published

    Effect of root exudates and bacterial metabolic activity on conjugal gene transfer in the rhizosphere of a marsh plant

    Kroer, Niels, Barkay, T., Sørensen, Søren Johannes & Weber, D., 1998, In: FEMS Microbiology Ecology. 25, 4, p. 375-384 10 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  15. Published

    Influence of sediment on pelagic carbon and nitrogen turnover in a shallow Danish estuary

    Middelboe, Mathias, Kroer, Niels, Jørgensen, N. O. G. & Pakulski, D., 1998, In: Microbial Ecology. 14, p. 81-90

    Research output: Contribution to journalJournal articleResearchpeer-review

  16. Effect of bacterial distribution and activity on conjugal gene transfer on the phylloplane of the bush bean (Phaseolus vulgaris)

    Normander, B., Christensen, B. B., Molin, S. & Kroer, Niels, 1 May 1998, In: Applied and Environmental Microbiology. 64, 5, p. 1902-1909 8 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  17. 1996
  18. Published

    Effects of viruses on nutrient turnover and growth efficiency of noninfected marine bacterioplankton

    Middelboe, Mathias, Jørgensen, Niels O. G. & Kroer, Niels, 1996, In: Applied and Environmental Microbiology. 62, 6, p. 1991-1997 7 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  19. 1995
  20. Published

    Conjugal transfer at natural population densities in a microcosm simulating an estuarine environment

    Barkay, T., Kroer, Niels, Rasmussen, L. D. & Sørensen, S., 1995, In: FEMS Microbiology Ecology. 16, p. 43-54

    Research output: Contribution to journalJournal articleResearch

  21. Published

    Conjugal gene transfer in the rhizosphere: effects of rost exuclates and bacterial metabolic activity (abstract P2.16.9)

    Kroer, Niels, Barkay, T., Sørensen, S. & Weber, D., 1995, 7th International Symposium om microbial ecology. Santos - São Paulo, Brazil, p. 147

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

  22. 1994
  23. Utilization of dissolved nitrogen by heterotrophic bacterioplankton: Effect of substrate C/N ratio

    Jorgensen, N. O. G., Kroer, Niels & Coffin, R. B., 1 Jan 1994, In: Applied and Environmental Microbiology. 60, 11, p. 4124-4133 10 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  24. Utilization of Dissolved Nitrogen by Heterotrophic Bacterioplankton - A Comparison of 3 Ecosystems

    Kroer, Niels, Jorgensen, N. O. G. & Coffin, R. B., Nov 1994, In: Applied and Environmental Microbiology. 60, 11, p. 4116-4123

    Research output: Contribution to journalJournal articleResearchpeer-review

  25. Utilization of dissolved nitrogen by heterotrophic bacterioplankton: A comparison of three ecosystems

    Kroer, Niels, Jorgensen, N. O. G. & Coffin, R. B., 1 Jan 1994, In: Applied and Environmental Microbiology. 60, 11, p. 4116-4123 8 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  26. Comparison of microbial trophic interactions in aquatic microcosms designed for the testing of introduced microorganisms

    Kroer, Niels, Coffin, R. B. & Jørgensen, N. O. G., 1 Jan 1994, In: Environmental Toxicology and Chemistry. 13, 2, p. 247-257 11 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  27. Relationships between biovolume and carbon and nitrogen content of bacterioplankton

    Kroer, Niels, 1 Jan 1994, In: FEMS Microbiology Ecology. 13, 3, p. 217-223 7 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  28. 1993
  29. Dissolved free amino acids, combined amino acids, and DNA as sources of carbon and nitrogen to marine bacteria

    Jorgensen, N. O. G., Kroer, Niels, Coffin, R. B., Xiao-Hua Yang, Y. & Lee, C., 1 Jan 1993, In: Marine Ecology Progress Series. 98, 1-2, p. 135-148 14 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  30. Bacterial growth efficiency on natural dissolved organic matter

    Kroer, Niels, 1 Jan 1993, In: Limnology and Oceanography. 38, 6, p. 1282-1290 9 p.

    Research output: Contribution to journalComment/debateResearchpeer-review

  31. 1992
  32. Microbial trophic interactions in aquatic microcosms designed for testing genetically engineered microorganisms: A field comparison

    Kroer, Niels & Coffin, R. B., 1 Jun 1992, In: Microbial Ecology. 23, 2, p. 143-157 15 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  33. 1989
  34. Life cycle characteristics and reproductive patterns of idotea spp. (Isopoda) in the limfjord, Denmark

    Kroer, Niels, 1 Jan 1989, In: Ophelia. 30, 1, p. 63-74 12 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  35. 1986
  36. Distribution and habitat segregation of four species of 1dotea (Isopoda) in a danish fjord

    Kroer, Niels, 1 Jan 1986, In: Ophelia. 25, 3, p. 199-207 9 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

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