John Roy Porter

John Roy Porter

Professor, emeritus

ORCID: 0000-0002-0777-3028

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  1. Published

    IMPETUS: 1. year report on research at KVL Taastrup, DK

    Ewert, F. & Porter, John Roy, 1998, Improving wheat model accuracy and suitability for regional impact assessment (IMPETUS) : EC project ENV4-CT97-0496 : report on 1. year. Mitchell, R. A. C. (ed.). p. B25-B32 9 p.

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

  2. Published

    Identity-based estimation of greenhouse gas emissions from crop production: case study from Denmark

    Bennetzen, E. H., Smith, P., Soussana, J. & Porter, John Roy, 2012, In: European Journal of Agronomy. 41, p. 66-72 7 p.

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

  3. Published

    Impacts of Climate Change on renewable Energy Sources and their Role in Nordic and Baltic Energy Systems: Case of Bio-Fuels: Research Notes

    Venäkäinen, A., Kellomäki, S., Sigurdsson, B., Linder, S., Porter, John Roy & Kull, O., 2007, University of Joensuu, Faculty of Forestry. 86 p.

    Research output: Book/Report › Book › Research

  4. Published

    Implications of crop model ensemble size and composition for estimates of adaptation effects and agreement of recommendations

    Rodríguez, A., Ruiz-Ramos, M., Palosuo, T., Carter, T. R., Fronzek, S., Lorite, I. J., Ferrise, R., Pirttioja, N., Bindi, M., Baranowski, P., Buis, S., Cammarano, D., Chen, Y., Dumont, B., Ewert, F., Gaiser, T., Hlavinka, P., Hoffmann, H., Höhn, J. G., Jurecka, F. & 17 others, Kersebaum, K. C., Krzyszczak, J., Lana, M., Mechiche-Alami, A., Minet, J., Montesino, M., Nendel, C., Porter, John Roy, Ruget, F., Semenov, M. A., Steinmetz, Z., Stratonovitch, P., Supit, I., Tao, F., Trnka, M., de Wit, A. & Rötter, R. P., 2019, In: Agricultural and Forest Meteorology. 264, p. 351-362 12 p.

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

  5. Published

    In memoriam Dr. P.H. (Pieter) Vereijken

    Porter, John Roy (ed.) & Spiertz, H., 2007, In: European Journal of Agronomy. 27, 2-4, p. iii-iv 2 p.

    Research output: Contribution to journal › Journal article › Communication

  6. Published

    Interaction between soils and crop production: rational systems

    Porter, John Roy, 1998. 2 p.

    Research output: Contribution to conference › Paper › Research

  7. Published

    Invited review: Intergovernmental Panel on Climate Change, agriculture, and food—A case of shifting cultivation and history

    Porter, John Roy, Challinor, A. J., Henriksen, Christian Bugge, Howden, S. M., Martre, P. & Smith, P., 1 Aug 2019, In: Global Change Biology. 25, 8, p. 2518-2529

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

  8. Published

    Klimakrisen kræver mere handling på den korte bane, Dan Jørgensen

    Gaarsmand Jacobsen, S., Lund, Jens Friis, Andersen, G., Jespersen, B., Porter, John Roy, Borregaard, Michael Krabbe, Richey, L. A. & Furu, Peter, 22 Feb 2021, Ræson.dk.

    Research output: Other contribution › Net publication - Internet publication › Communication

  9. Published

    Lack of Interaction between Extreme High-Temperature Events at Vegetative and Reproductive Growth Stages in Wheat

    Wollenweber, B., Porter, John Roy & Schellberg, J., 2003, In: Journal of Agronomy and Crop Science. 189, 3, p. 142-150 8 p.

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

  10. Published

    Lack of interaktion between extreme high-temperature events at vegetative and reproductive growtg stages in wheat

    Wollenweber, B., Porter, John Roy & Schellberg, J., 2003, In: Journal of Agronomy and Crop Science. 189, p. 142-150 9 p.

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

  11. Published

    Landbruget: energi og fødevareproduktion i et samlet system?

    Porter, John Roy & Olsen, H., 1996, In: Naturens Verden. 9, p. 321-326 6 p.

    Research output: Contribution to journal › Journal article › Research

  12. Published

    Long-term effects of conversion to organic farming on ecosystem services - a model simulation case study and on-farm case study in Denmark

    Fan, F., Henriksen, Christian Bugge & Porter, John Roy, 28 May 2018, In: Agroecology and Sustainable Food Systems. 42, 5, p. 504-529 26 p.

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

  13. Published

    Læbælter til energi og marker til fødevareproduktion

    Porter, John Roy, Sigsgaard, L, Sandhu, H. S., Wratten, S. D., Costanza, R. & Dennis, B., 2010, In: Jord og Viden. 155, 5, p. 18-19

    Research output: Contribution to journal › Journal article › Research

  14. Published

    MODEXCROP project: model evaluation of experimental variability to improve predictability of crop yields under climate change

    Ewert, F. & Porter, John Roy, 1998, Copenhagen: Royal Veterinary and Agricultural University, Department of Agricultural Science, Agro-Ecology. 21 p.

    Research output: Book/Report › Book › Education

  15. Published

    Making science more effective for agriculture

    Sadras, V., Alston, J., Aphalo, P., Connor, D., Denison, R. F., Fischer, T., Gray, R., Hayman, P., Kirkegaard, J., Kirchmann, H., Kropff, M., Lafitte, H. R., Langridge, P., Lenne, J., Mínguez, M. I., Passioura, J., Porter, J. R., Reeves, T., Rodriguez, D., Ryan, M. & 2 others, Villalobos, F. J. & Wood, D., 2020, Advances in Agronomy. Sparks, D. L. (ed.). Academic Press, p. 153-177 25 p. (Advances in Agronomy, Vol. 163).

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

  16. Published

    Making sense of wheat development: a critique of methodology

    Jamieson, P. D., Brooking, I. R., Semenov, M. A. & Porter, John Roy, 1998, In: Field Crops Research. 55, p. 117-127 11 p.

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

  17. Published

    Mennesker kan ikke ejes

    Toft, J. & Porter, John Roy, 1996, In: Dagbladet Information. 30

    Research output: Contribution to journal › Journal article › Communication

  18. Published

    Modeling Grain Nitrogen Accumulation and Protein Composition to Understand the Sink/Source Regulation of Nitrogen Romobilisation for Wheat

    Martre, P., Porter, John Roy, Jamieson, P. & Triboï, E., 2003, In: Plant Physiology. 133, p. 1959-1967 8 p.

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

  19. Published

    Modelling CO2 effects on wheat with varying nitrogen supplies

    Jamieson, P., Berntsen, J., Ewert, F., Kimball, B. A., Olesen, J. E., Pinter, P. J., Porter, John Roy & Semenov, M., 2000, In: Agriculture, Ecosystems & Environment. 82, p. 27-37 11 p.

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

  20. Published

    Modelling CO2 effects on wheat with varying water supply

    Ewert, F., Rodriguez, D., Mitchell, R. A. C., Semenov, M., Porter, John Roy, Goudriaan, J., Jamieson, P., Kimball, B. A., Manderscheid, R., Fangmeier, A. & Fereres, E., 2000. 1 p.

    Research output: Contribution to conference › Paper › Research

  21. Published

    Modelling and experimental studies of the growth and development of wheat

    Porter, John Roy, 2000, Copenhagen: The Royal Veterinary and Agricultural University, Department of Dairy and Food Science, Agroecology Group. 99 p.

    Research output: Book/Report › Ph.D. thesis › Research

  22. Published

    Modelling crop yields under climate change

    Porter, John Roy & Semenov, M. A., 1997, In: Eurostat. 1997, p. 349-366 18 p.

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

  23. Published

    Modelling cropping systems- highlights of the symposium and preface to the special issues

    Hammer, G. L., Kropff, M. J., Sinclair, T. R. & Porter, John Roy, 2002, In: European Journal of Agronomy. 16, p. 1-11 11 p.

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

  24. Published

    Modelling effects of ozone exposure, elevated CO2 and weather on wheat

    Ewert, F. & Porter, John Roy, 1999. 2 p.

    Research output: Contribution to conference › Paper › Research

  25. Published

    Modelling ozone effects on wheat in relation to elevated CO2 and weather: short-term to seasonal responses of leaf photosynthesis

    Ewert, F. & Porter, John Roy, 1997, In: Plant, Cell and Environment. 1997

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

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