Publications

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Sommer, S. G., McGinn, S. M., Hao, X. & Larney, F. J. (2004). Techniques for measuring gas emissions from stockpiled cattle manure. In A. Aland & T. Banhazi (Eds.), Livestock Housing: Modern Management to Ensure Optimal Health and Welfare of farm animals (pp. 4643-4652). Wageningen Academic Publicers. https://doi.org/10.3920/978-90-771-4

Thomsen, I. K., Sørensen, P. & Sommer, S. G. (2004). Udnyttelse af fast og flydende husdyrgødning: effekt af kompostering og afgasning. In U. Jørgensen & T. Dalgaard (Eds.), Energi i økologisk jordbrug: Reduktion af fossilt energiforbrug og produktion af vedvarende energi (pp. 67-79)

Godwin, K. S., Hafner, S. D. & Buff, M. F. (2003). Long-term trends in sodium and chloride in the Mohawk River, New York: The effect of fifty years of road-salt application. Environmental Pollution, 124(2), 273-281. https://doi.org/10.1016/S0269-7491(02)00481-5

Hafner, S. D. (2003). Ecology (communications arising): Is fertilization efficiency misleading? Nature, 422, 397-398. https://doi.org/10.1038/422397a

Hafner, S. (2003). Trends in maize, rice, and wheat yields for 188 nations over the past 40 years: A prevalence of linear growth. Applied Soil Ecology, 97(1-3), 275-283. https://doi.org/10.1016/S0167-8809(03)00019-7

Hansen, M. N., Sommer, S. G. & Madsen, N. P. (2003). Reduction of ammonia emission by shallow slurry injection: Injection efficiency and additional energy demand. Journal of Environmental Quality, 32, 1099-1104.

Olesen, J. E., Sommer, S. G., Asman, W. A. H. & Petersen, S. O. (2003). Emission of global environment load gases from animal waste management. In 3rd int. symp. on the Promotion of Environmental Protection in the Livestock Farm. Sustainable Animal Production in Global Environment and Animal Waste Management in North America (pp. 111-130)

Sommer, S. G., Søgaard, H. T., Hutchings, N., Huijsman, J., Bussink, W. & Nicholson, F. (2003). Ammonia losses from field applied animal manure - development of a European decision support system. EURATRAC, 24, 18-21.

Sommer, S. G. (2003). Drivhusgasser - Canada: Indtryk fra en studietur. DJF-Bladet.

Sommer, S. G. (2003). Drivhusgasser fra landbruget. Jord og Viden, 2, 16-17.

Sommer, S. G. (2003). Drivhusgasser fra landbruget. Indtryk fra en studietur til canadiske forskningsinstitutioner, der giver nye muligheder for DJF. Jord og viden, 2, 16-17. http://infolink.elbo.dk/jord/bruger/vis.asp?which=12064

Sommer, S. G., Petersen, S. O. & Møller, H. B. (2003). Energy production and greenhouse gas emission in biogas plant system. In Proc. int. symp. on Issues concerning biogas plant in cold-snowy regions. Civil Engineering Research Institute of Hokkaido, Sapporo, Japan. ISBN 4-9901495-0-5 (pp. 50-56)

Sommer, S. G., Génermont, S., Cellier, P., Hutchings, N., Olesen, J. E. & Morvan, T. (2003). Processes controlling ammonia emission from livestock slurry in the field. Euro, 19, 465-486.

Sommer, S. G. & Hutchings, N. (2003). Vi bør satse mere på EU-samarbejde. Ingeniøren, 15.

Sørensen, C. A. G., Jacobsen, B. H. & Sommer, S. G. (2003). An Assessment Tool applied to Manure Management Systems using Innovative Technologies. Biosystems Engineering, 86(3), 315-325. https://doi.org/10.1016/S1537-5110(03)00137-5

Sørensen, C. A. G., Jacobsen, B. H., Sommer, S. G. & Guul-Simonsen, F. (2003). Håndtering af gylle ved brug af rørtransport - en teknisk-økonomisk analyse. https://www.researchgate.net/publication/280316048_Handtering_af_gylle_ved_brug_af_rortransport_-_en_teknisk-okonomisk_analyse

Eriksen, J., Petersen, S. O. & Sommer, S. G. (2002). The fate of nitrogen in outdoor pig production. Agronomie, 22, 863-867.

Hansen, M. N., Sommer, S. G. & Henriksen, K. (2002). Methane emissions from livestock manure - effects of storage conditions and climate. In Proc. Int. Workshop on Greenhouse Gas Inventories for Agriculture in the Nordic Countries (Petersen, S.O. & Olesen, J.E., (ed.)). DIAS report - Plant Production 81 (pp. 45-53)

Menzi, H., Pain, B. & Sommer, S. G. (2002). Manure management: The European perspective. In Proc. 4th int. livestock waste management symp. and technology expo, Penang, Malaysia (Ong, H.K. et al. (eds.)). ISBN 983-99519-2-0 (pp. 35-44)

Møller, H. B., Hansen, M. N. & Sommer, S. G. (2002). Hundrede procents udnyttelse af husdyrgødningen. Danske Maelkeproducenter, 3, 30-32.

Møller, H. B., Sommer, S. G. & Ahring, B. K. (2002). Separation efficiency and particle size distribution in relation to manure type and storage conditions. Bioresource Technology, 85, 189-196.

Osada, T., Sommer, S. G., Dahl, P. J. & Rom, H. B. (2002). Gaseous emission and changes in nutrient composition during deep litter composting. Acta Agriculturae Scandinavica, Section B - Soil & Plant Science, 51, 137-142.

Sherlock, R. R., Sommer, S. G., Khan, R. Z., Wood, C. W., Guertal, E. A., Freney, J. R., Dawson, C. O. & Cameron, K. C. (2002). Ammonia, methane and nitrous oxide emission from pig slurry applied to a pasture in New Zealand. Journal of Environmental Quality, 31, 1491-1501.

Søgaard, H. T., Sommer, S. G., Hutchings, N., Huijsmans, J. F. M., Bussink, D. W. & Nicholson, F. (2002). Ammonia volatilization from field-applied animal slurry - the ALFAM model. Atmospheric Environment, 36(20), 3309-3319.

Sommer, S. G. (2002). ALFAM - Et beslutningsstøtteværktøj til beregning af ammoniakfordampning. In Danmarks JordbrugsForskning og Landbrugets Rådgivningscenter konference: Teknik i Landbruget 2002, Scandinavian Congress Center, Aarhus, 21.-22.3.02. Bila (pp. 58-59)

Sommer, S. G. & Hutchings, N. (2002). ALFAM vil kunne mindske ammoniakfordampning fra markerne. Jordbrugsforskning, 1, 3-3.

Sommer, S. G., Petersen, S. O. & Møller, H. B. (2002). A new model for calculating the reduction in greenhouse gas emissions through anaerobic co-digestion of manure and organic waste. In S. O. Petersen & J. E. Olesen (Eds.), Proc. Int. Workshop on Greenhouse Gas Inventories for Agriculture in the Nordic Countries (pp. 54-63)

Sommer, S. G., Møller, H. B. & Hansen, M. N. (2002). Fremtidig teknologi til håndtering af husdyrgødning på svinebrug.

Sommer, S. G., Hansen, M. N. & Møller, H. B. (2002). Fuld udnyttelse af husdyrgødning. Forskningsnytt om Oekologisk Landbruk i Norden, 2, 18-20.

Sommer, S. G. & Kaadt, M. H. (2002). Hydratkalk reducerer smitte, men øger ammoniakfordampning. Landsbladet Svin, 12, 12-12.

Sommer, S. G., Søgaard, H. T., Hutchings, N., Huijsman, J., Bussink, W. & Nicholson, F. (2002). NH3 losses from field applied animal manure - development of a European decision support system. In Proc. 4th int. livestock waste management symposium and technology expo, Penang, Malaysia (Ong, H.K. et al. (eds.)). ISBN 983-99519-2-0 (pp. 259-267)

Sommer, S. G. & Petersen, S. O. (2002). Nitrous oxide emissions from manure handling - effects of storage conditions and climate. In S. O. Petersen & J. E. Olesen (Eds.), Proc. Int. Workshop on Greenhouse Gas Inventories for Agriculture in the Nordic Countries (pp. 97-106)

Sommer, S. G., Møller, H. B. & Petersen, S. O. (2002). Reduction in methane and nitrous oxide emission from animal slurry through anaerobic digestion. In Proc. 3rd int. symp. on Non-CO2 Greenhouse Gases: Scientific Understanding, Control Options and Policy Aspects. Millpress Science Publishers Delft, Maastricht, The Netherlands. ISBN 90-77017-70-4 (pp. 475-480)

Andersen, J. M., Poulsen, H. D., Børsting, C. F., Rom, H. B., Sommer, S. G. & Hutchings, N. J. (2001). Ammoniakemission fra landbruget siden midten af 80?erne.

Eriksen, J., Petersen, S. O. & Sommer, S. G. (2001). Miljøbelastning ved søer på friland. In J. E. Hermansen (Ed.), Økologisk og udendørs svineproduktion - Hvor står vi? (pp. 30-34)

Eriksen, J., Petersen, S. O. & Sommer, S. G. (2001). The fate of nitrogen in outdoor pig production. In Book of abstacts, 11th Nitrogen Workshop (pp. 391-392)

Hansen, M. N., Jacobsen, B. & Sommer, S. G. (2001). Dybstrøelse i markstak taber op til 40 procent af sit kvælstof. Landsbladet Svin, 5, 20-21.

Hutchings, N., Sommer, S. G., Andersen, J. M. & Asman, W. A. H. (2001). A detailed ammonia emission inventory for Denmark. Atmospheric Environment, 35, 1959-1968.

Hutchings, N. & Sommer, S. G. (2001). Integrating emissions at the farm scale. In H. Menzi & B. Achermann (Eds.), Proceedings of the UN/EGE Ammonia Expert Group (pp. 139-140). Swiss Agency for Environment, Forests and Landscape.

Jacobsen, B., Sommer, S. G. & Hansen, M. N. (2001). Uden overdækning forsvinder op til 21 procent kvælstof fra gylletanken. Landsbladet Svin, 5, 14-16.

Oenema, O., Bannink, A., Sommer, S. G. & Velthof, G. L. (2001). Gaseous Nitrogen Emissions from Livestock Farming Systems. In Nitrogen in the Environment: Sources, Problems and Management. Follett, R.F. & Hatfield, J.L., (Eds.). Elsevier Science B.V., Chapter (Vol. 10, pp. 255-289)

Poulsen, H. D., Børsting, C. F., Rom, H. B. & Sommer, S. G. (2001). Kvælstof, fosfor og kalium i husdyrgødning - normtal 2000.

Rattanarajcharkul, R., Rucha, W., Sommer, S. G. & Menzi, H. (2001). Area-wide integration of specialised livestock and crop production in Eastern Thailand. In Proc. 9th int. workshop of the network general theme: 'Technology Transfer", RAMIRAN 2000, Ital (pp. 295-300)

Rom, H. B., Sommer, S. G. & Hansen, M. N. (2001). Ammoniakfordampning fra husdyrgødning. Nedsættelse af fordampningen fra stald til mark. JordbrugsForskning, 3, 6-8.

Søgaard, H. T., Sommer, S. G., Hutchings, N. & Huijsman, J. (2001). Ammonia volatilization from manure applied to fields – data collation for an EU database and ists statistical analysis. In NJF-Seminar 320: Sustainable handling and utilisation of livestock manure from animals to plants

Søgaard, H. T., Sommer, S. G. & Hutchings, N. (2001). Ammonia volatilization from manure applied to fields - data collation for an EU database and its statistical analysis. In Proc. NJF-Seminar, 320: Sustainable handling and utilisation of livestock manure from animals to plants. DIAS report - Animal Husbandry, 21 (pp. 174-187)

Sommer, S. G. & Hutchings, N. (2001). Ammonia emission from field applied manure and its reduction. European Journal of Agronomy, 15, 1-15.

Sommer, S. G., Hutchings, N., Carton, O. T., Smith, K., Søgaard, H. T., Nicholson, F. A., Huijsmans, J., Bussink, W., Misselbrook, T., Pain, B., Genermont, S., Menzi, H., Morken, J., Verwijs, B., Rodhe, L. & Döhler, H. (2001). Ammonia losses from field applied animal manure. Aarhus University.

Sommer, S. G., Søgaard, H. T., Møller, H. B. & Morsing, S. (2001). Ammonia volatilization from sows on grassland. Atmospheric Environment, 35, 2023-2032.

Displaying results 351 to 400 out of 569

Revised 18.03.2026

Sasha D. Hafner