Per Lennart Ambus

Per Lennart Ambus

Professor

ORCID: 0000-0001-7580-524X

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  1. Published

    Use of feathers to assess polychlorinated biphenyl and organochlorine pesticide exposure in top predatory bird species of Pakistan

    Abbasi, N. A., Eulaers, I., Jaspers, V. L. B., Chaudhry, M. J. I., Frantz, A., Ambus, Per Lennart, Covaci, A. & Malik, R. N., 1 Nov 2016, In: Science of the Total Environment. 569-570, p. 1408-1417

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

  2. Published

    The first exposure assessment of legacy and unrestricted brominated flame retardants in predatory birds of Pakistan

    Abbasi, N. A., Eulaers, I., Jaspers, V. L. B., Chaudhry, M. J. I., Frantz, A., Ambus, Per Lennart, Covaci, A. & Malik, R. N., 2017, In: Environmental Pollution. 220, Part B, p. 1208-1219 12 p.

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

  3. Emissions of nitrous oxide from Irish arable soils: effects of tillage and reduced N input

    Abdalla, M., Jones, M., Ambus, Per Lennart & Williams, M., 1 Jan 2010, In: Nutrient Cycling in Agroecosystems. 86, 1, p. 53-65 13 p.

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

  4. Application of the DNDC model to predict emissions of N2O from Irish agriculture

    Abdalla, M., Wattenbach, M., Smith, P., Ambus, Per Lennart, Jones, M. & Williams, M., 15 Jul 2009, In: Geoderma. 151, 3-4, p. 327-337 11 p.

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

  5. 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

  6. Nitrous oxide emission from Ulva lactuca incubated in batch cultures is stimulated by nitrite, nitrate and light

    Albert, K. R., Bruhn, A. & Ambus, Per Lennart, 1 Oct 2013, In: Journal of Experimental Marine Biology and Ecology. 448, p. 37-45 9 p.

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

  7. Relationship between gross nitrogen cycling and nitrous oxide emissionin grass-clover pasture

    Ambus, Per Lennart, 1 Jun 2005, In: Nutrient Cycling in Agroecosystems. 72, 2, p. 189-199 11 p.

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

  8. Oxidation of 13C-labeled methane in surface crusts of pig-and cattle slurry

    Ambus, Per Lennart & Petersen, S., 1 Jun 2005, In: Isotopes in Environmental and Health Studies. 41, 2, p. 125-133 9 p.

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

  9. Short-term carbon and nitrogen cycling in urine patches assessed by combined carbon-13 and nitrogen-15 labelling

    Ambus, Per Lennart, Petersen, S. O. & Soussana, J., 1 Jun 2007, In: Applied Soil Ecology. 121, 1-2, p. 84-92 9 p.

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

  10. Sources of nitrous oxide emitted from European forest soils

    Ambus, Per Lennart, Zechmeister-Boltenstern, S. & Butterbach-Bahl, K., 2006, In: Biogeosciences. 3, 2, p. 135-145 11 p.

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

  11. The effect of increased n deposition on nitrous oxide, methane and carbon dioxide fluxes from unmanaged forest and grassland communities in Michigan

    Ambus, Per Lennart & Robertson, G. P., 1 Jul 2006, In: Biogeochemistry. 79, 3, p. 315-337 23 p.

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

  12. Published

    Spatial and Seasonal Nitrous Oxide and Methane Fluxes in Danish Forest-, Grassland-, and Agroecosystems

    Ambus, Per Lennart & Christensen, Søren, 1 Sep 1995, In: Journal of Environmental Quality. 24, 5, p. 993-1001 9 p.

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

  13. Fluxes of CH4 and N2O in aspen stands grown under ambient and twice-ambient CO2

    Ambus, Per Lennart & Robertson, G., 1999, In: Plant and Soil. 209, 1, p. 1-8 8 p.

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

  14. Development of an accumulation-based system for cost-effective chamber measurements of inert trace gas fluxes

    Ambus, Per Lennart, Skiba, U., Drewer, J., Jones, S. K., Carter, M. S., Albert, K. R. & Sutton, M. A., 1 Oct 2010, In: European Journal of Soil Science. 61, 5, p. 785-792 8 p.

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

  15. Published

    Measurement of N2O emission from a fertilized grassland: An analysis of spatial variability

    Ambus, Per Lennart & Christensen, Søren, 20 Aug 1994, In: Journal of Geophysical Research: Atmospheres. 99, D8, p. 16549-16555 7 p.

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

  16. Reactive nitrogen and greenhouse gas flux interactions in terrestrial ecosystems

    Ambus, Per Lennart, Skiba, U., Butterbach-Bahl, K. & Sutton, M. A., 1 Jun 2011, In: Plant and Soil. 343, 1-2, p. 1-3 3 p.

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

  17. Nitrogen mineralization and denitrification as influenced by crop residue particle size

    Ambus, Per Lennart & Jensen, E., 1 Dec 1997, In: Plant and Soil. 197, 2, p. 261-270 10 p.

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

  18. Published

    Similar N2O flux from soil measured with different chamber techniques

    Ambus, Per Lennart, CLAYTON, H., ARAH, J., SMITH, K. & Christensen, Søren, 1 Jan 1993, In: ATMOSPHERIC ENVIRONMENT PART A-GENERAL TOPICS. 27, 1, p. 121-123 3 p.

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

  19. Published

    Denitrification and N2O losses in a heath-land under changing climate conditions

    Ambus, Per Lennart, Priemé, Anders, S. Carter, M., Albert, K., S. Larsen, K., Andersson, M. & Beier, C., 2007.

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

  20. Published

    Assessment of CH4 and N2O fluxes in a Danish beech (Fagus sylvatica) forest and an adjacent N-fertilised barley (Hordeum vulgare) field: effects of sewage sludge amendments

    Ambus, Per Lennart, Jensen, J. M., Priemé, Anders, Pilegaard, K. & Kjøller, A., 2001, In: Nutrient Cycling in Agroecosystems. 60, 1-3, p. 15-21 7 p.

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

  21. Automated near-continuous measurement of carbon dioxide and nitrous oxide fluxes from soil

    Ambus, Per Lennart & Robertson, G., 1 Mar 1998, In: Soil Science Society of America Journal. 62, 2, p. 394-400 7 p.

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

  22. Published

    Comparison of Denitrification in Two Riparian Soils

    Ambus, Per Lennart & Lowrance, R., 1 Jul 1991, In: Soil Science Society of America Journal. 55, 4, p. 994-997 4 p.

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

  23. Nitrous oxide and N-leaching losses from agricultural soil: Influence of crop residue particle size, quality and placement

    Ambus, Per Lennart, Jensen, E. & Robertson, G., 2001, In: Phyton (Austria). 41, 3, p. 7-15 9 p.

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

  24. Crop residue management strategies to reduce N-losses: Interaction with crop N supply

    Ambus, Per Lennart & Jensen, E., 2001, In: Communications in Soil Science and Plant Analysis. 32, 7-8, p. 981-996 16 p.

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

  25. Published

    Control of denitrification enzyme activity in a streamside soil

    Ambus, Per Lennart, 1 Apr 1993, In: F E M S Microbiology Reviews. 102, 3-4, p. 225-234 10 p.

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

  26. Natural carbon isotopes used to study methane consumption and production in soil

    Ambus, Per Lennart, Andersen, B., Kemner, M., Sorensen, B. & Wille, J., 2002, In: Isotopes in Environmental and Health Studies. 38, 3, p. 149-157 9 p.

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

  27. Published

    Denitrification variability and control in a riparian fen irrigated with agricultural drainage water

    Ambus, Per Lennart & Christensen, Søren, 1993, In: Soil Biology & Biochemistry. 25, 7, p. 915-923 9 p.

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

  28. Published

    Nitrogen turnover rates in a riparian fen determined by 15N dilution

    Ambus, Per Lennart, MOSIER, A. & Christensen, Søren, 1 Dec 1992, In: Biology and Fertility of Soils. 14, 4, p. 230-236 7 p.

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

  29. Published

    Combined effects of drought, temperature and CO2 on GHG emissions from temperate shrub-land

    Ambus, Per Lennart, Priemé, Anders, S. Carter, M., Albert, K., S. Larsen, K., Andersson, M. & Beier, C., 2007.

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

  30. Published

    Nitrous oxide production by denitrification and nitrification in temperate forest, grassland and agricultural soils

    Ambus, Per Lennart, 1 Sep 1998, In: European Journal of Soil Science. 49, 3, p. 495-502 8 p.

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

  31. Published

    Production of N2O in soil during decomposition of dead yeast cells with different spatial distributions

    Ambus, Per Lennart, 1 Apr 1996, In: Plant and Soil. 181, 1, p. 7-12 6 p.

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

  32. Published

    Nitrogen isotopes reveal high N retention in plants and soil of old Norse and Inuit deposits along a wet-dry arctic fjord transect in Greenland

    Andersen, E. A. S., Michelsen, Anders, Fenger-Nielsen, R., Hollesen, J., Ambus, Per Lennart & Elberling, Bo, 2020, In: Plant and Soil. 455, 1-2, p. 241-255 15 p.

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

  33. Biomass production, symbiotic nitrogen fixation and inorganic N use in dual and tri-component annual intercrops

    Andersen, M., Hauggaard-Nielsen, H., Ambus, Per Lennart & Jensen, E., 1 Oct 2004, In: Plant and Soil. 266, 1-2, p. 273-287 15 p.

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

  34. Published

    Organic matter flow in the food web at a temperate heath under multifactorial climate change

    Andresen, L. C., Konestabo, H. S., Maraldo, K., Holmstrup, M., Ambus, Per Lennart, Beier, Claus & Michelsen, Anders, 2011, In: Rapid Communications in Mass Spectrometry. 25, 11, p. 1485-1496 12 p.

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

  35. Published

    Labelling belowground with 18O to determine soil respiration

    Andresen, L. C., Ambus, Per Lennart, Dungait, J. & Bol, R., 2011.

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

  36. Published

    Climate factors increase glycine use by gram positive bacteria

    Andresen, L. C., Bol, R., Dungait, J., Ambus, Per Lennart & Michelsen, Anders, 2011.

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

  37. Published

    Glycine uptake in heath plants and soil microbes responds to elevated temperature, CO2 and drought

    Andresen, L. C., Michelsen, Anders, Jonasson, S. E., Beier, Claus & Ambus, Per Lennart, 2009, In: Acta Oecologica. 35, 6, p. 786-796 11 p.

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

  38. Published

    Belowground heathland responses after 2 years of combined warming, elevated CO2 and summer drought

    Andresen, L. C., Michelsen, Anders, Ambus, Per Lennart & Beier, Claus, 2010, In: Biogeochemistry. 101, 1-3, p. 27-42 16 p.

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

  39. Published

    Isotopic methods for non-destructive assessment of carbon dynamics in shrublands under long-term climate change manipulation

    Andresen, L. C., Domínguez, M. T., Reinsch, S., Smith, A. R., Schmidt, Inger Kappel, Ambus, Per Lennart, Beier, Claus, Boeckx, P., Bol, R., De Dato, G., Emmett, B. A., Estiarte, M., Garnett, M. H., Kröel-dulay, G., Mason, S. L., Nielsen, C. S., Peñuelas, J. & Tietema, A., 2018, In: Methods in Ecology and Evolution. 9, 4, p. 866-880 15 p.

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

  40. Published

    Moderate nitrogen retention in temperate heath ecosystem after elevated CO2, drought and warming through 7 years

    Andresen, L. C., Ambus, Per Lennart, Beier, Claus & Michelsen, Anders, 2023, In: European Journal of Soil Science. 74, 4, 13 p., e13397.

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

  41. Published

    Bacteria and fungi respond differently to multifactorial climate change in a temperate heathland, traced with 13C-Glycine and FACE CO2

    Andresen, L. C., Dungait, J. A. J., Bol, R., Selsted, M. B., Ambus, Per Lennart & Michelsen, Anders, 2014, In: P L o S One. 9, 1, 9 p., e85070.

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

  42. Published

    Plant nutrient mobilization in temperate heathland responds to elevated CO2, temperature and drought

    Andresen, L. C., Michelsen, Anders, Jonasson, S. E., Schmidt, Inger Kappel, Mikkelsen, T. N., Ambus, Per Lennart & Beier, Claus, 2010, In: Plant and Soil. 328, 1-2, p. 381-396 16 p.

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

  43. Published

    Nitrogen uptake in temperate heath vegetation and soil microbes is influenced by elevated temperature, CO2 and drought

    Andresen, L. C., Michelsen, Anders, Jonasson, S. E., Beier, Claus & Ambus, Per Lennart, 2009, In: Institute of Physics Conference Series.

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

  44. Published

    Heath nitrogen cycling at manipulated 'CLIMAITE'

    Andresen, L. C., Ambus, Per Lennart, Beier, C., Jonasson, S. E. & Michelsen, Anders, 2005, Ikke angivet. Institute of Nature Conservation, p. 52-52

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

  45. Published

    Climaite: a biological time machine

    Beier, C., Mikkelsen, T. N., Ambus, Per Lennart, Pilegaard, K., Jonasson, S., Michelsen, A., Poulsen, H. R., Christensen, S., Primé, A., Schmidt, Inger Kappel, Gundersen, Per & Holmstrup, M., 2005. 1 p.

    Research output: Contribution to conference › Poster › Research

  46. Published

    CLIMAITE - CLIMAte change effects on biological processes In Terrestrial Ecosystems

    Beier, C., Mikkelsen, T. N., Ambus, Per Lennart, Pilegaard, K., Jonasson, S., Michelsen, A., Poulsen, H. R., Christensen, S., Primé, A., Schmidt, Inger Kappel, Gundersen, Per & Holmstrup, M., 2006. 1 p.

    Research output: Contribution to conference › Poster › Research

  47. Published

    Fluxes of NO3-, NH4+, NO, NO2, and N2O in an old danish beech forest

    Beier, Claus, Rasmussen, L., Pilegaard, K., Ambus, Per Lennart, Mikkelsen, T. N., Jensen, N. O., Kjøller, Annelise Helene, Priemé, Anders & Ladekarl, U. L., 2001, In: Water, Air, and Soil Pollution: Focus. 1, p. 187-195

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

  48. Published

    Challenges in measuring nitrogen isotope signatures in inorganic nitrogen forms: An interlaboratory comparison of three common measurement approaches

    Biasi, C., Jokinen, S., Prommer, J., Ambus, Per Lennart, Dörsch, P., Yu, L., Granger, S., Boeckx, P., Van Nieuland, K., Brueggemann, N., Wissel, H., Voropaev, A., Zilberman, T., Jaentti, H., Trubnikova, T., Welti, N., Voigt, C., Gebus-Czupyt, B., Czupyt, Z. & Wanek, W., 2022, In: Rapid Communications in Mass Spectrometry. 36, 22, 16 p., 9370.

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

  49. Combined climate factors alleviate changes in gross soil nitrogen dynamics in heathlands

    Bjorsne, A., Rutting, T. & Ambus, Per Lennart, 1 Aug 2014, In: Biogeochemistry. 120, 1-3, p. 191-201 11 p.

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

  50. Published

    Biodegradation of chlorinated solvents in a water unsaturated topsoil

    Borch, T., Ambus, Per Lennart, Laturnus, F., Svensmark, Bo & Grøn, C., 2003, In: Chemosphere. 51, p. 143-152

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

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