John Roy Porter

John Roy Porter

Professor, emeritus

ORCID: 0000-0002-0777-3028

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  1. Published

    A European science plan to sustainably increase food security under climate change

    Soussana, J., Fereres, E., Long, S. P., Mohren, F. G. M. J., Pandya-Lorch, R., Peltonen-Sainio, P., Porter, John Roy, Rosswall, T. & von Braun, J., 2012, In: Global Change Biology. 18, 11, p. 3269-3271 3 p.

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

  2. Published

    A comparison of the models AFRCWHEAT2, CERES-Wheat, Sirius, SUCROS2 and SWHEAT with measurements from wheat grown under drought

    Jamieson, P. D., Porter, John Roy, Goudriaan, J., Ritchie, J. T., Keulen, H. V. & Stol, W., 1998, In: Field Crops Research. 55, p. 23-44 22 p.

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

  3. Published

    A dynamic Model of the Effects of nitrogen Fertilisation, Water Deficit and Temperature on grain protein level and composition for Bread Wheat (Triticum Aestivum L.)

    Martre, P., Porter, John Roy, Jamieson, P., Henton, S. M. & Triboï, E., 2003. 4 p.

    Research output: Contribution to conference › Paper › Research

  4. Published

    A genotype, environment and management (GxExM) analysis of adaptation in winter wheat to climate change in Denmark

    Montesino San Martin, M., Olesen, J. E. & Porter, John Roy, 2014, In: Agricultural and Forest Meteorology. 187, p. 1-13 13 p.

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

  5. Published

    A model for fossil energy use in Danish agriculture used to compare organic and conventional farming

    Dalgaard, T., Halberg, N. & Porter, John Roy, 2001, In: Agriculture, Ecosystems & Environment. 87, p. 51-65 15 p.

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

  6. Published

    A ¤simulation study of crop growth and development under climate change

    Peiris, D. R., Crawford, J. W., Grashoff, C., Jefferies, R. A., Porter, John Roy & Marshall, B., 1996, In: Agricultural and Forest Meteorology. 79, p. 271-287 17 p.

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

  7. Published

    A ¤strategy for process modelling of short-rotation Salix coppice plantations

    Isebrands, J. G., Host, G. E., Bollmark, L., Porter, John Roy, Philippot, S., Stevens, E. & Rushton, K., 1996, In: Biomass & Bioenergy. (2/3), p. 245-252 8 p.

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

  8. Published

    Activities of the INES Standing Committee on Ethical Questions

    Porter, John Roy, 1996, Scientists for Global Responsibility : National Coordinating Committee report 1993-1995. p. 9-10 2 p.

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

  9. Published

    Adaptation response surfaces for managing wheat under perturbed climate and CO2 in a Mediterranean environment

    Ruiz-Ramos, M., Ferrise, R., Rodríguez, A., Lorite, I. J., Bindi, M., Carter, T. R., Fronzek, S., Palosuo, T., Pirttioja, N., 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 Pouzols, F., Nendel, C., Porter, John Roy, Ruget, F., Semenov, M. A., Steinmetz, Z., Stratonovitch, P., Supit, I., Tao, F., Trnka, M., de Wit, C. A. & Rötter, R. P., 2018, In: Agricultural Systems. 159, p. 260-274 15 p.

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

  10. Published

    Afgrødernes respons på klimaændringer

    Porter, John Roy, 2007. 2 p.

    Research output: Contribution to conference › Paper › Research

  11. Aggregation of Phytophthora drechsleri zoospores; pattern analysis suggests a taxis

    Porter, John Roy & Shaw, D. S., 1978, In: Transactions of the British mycological Society. 71, p. 515 518 4 p.

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

  12. Published

    Agricultural production and greenhouse gas emissions from world regions - the major trends over 40 years

    Bennetzen, E. H., Smith, P. & Porter, John Roy, 2016, In: Global Environmental Change. 37, p. 43-55 13 p.

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

  13. Published

    Agriculture and technology

    Porter, John Roy & Rasmussen, Jesper, 2009, A companion to the philosophy of technology. Olsen, J. K. B., Pedersen, S. A. & Hendricks, V. F. (eds.). Wiley-Blackwell, p. 285-288 4 p.

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

  14. Published

    Agroecology: a flagship NOVA program

    Lieblein, G., Bretland, T. A., Francis, C. A., Sriskandarajah, N., Langer, Vibeke, Porter, John Roy, Salomonsen, L., Gerber, U. & Helenius, J., 2005, 10 NOVA University Network Years. The Nordic Forestry, Veterinary and Agricultural University Network, p. 52-53 2 p.

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

  15. Published

    Agroecology education and research: an academic platform for organic farming

    Francis, C., Breland, T. A., Lieblein, G., Moulton, M., Salomonsen, L., Geber, U., Langer, Vibeke, Sriskandarajah, N., Porter, John Roy & Helenius, J., 2006, Ikke angivet. Andreasen, C. B., Elsgaard, L., Søndergaard Sørensen, L. & Hansen, G. (eds.). Forskningscenter for Økologisk Jordbrug og Fødevaresystemer, 2 p.

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

  16. Published

    Agroecology, scaling and interdisciplinarity

    Porter, John Roy, Dalgaard, T. & Hutchings, N. J., 2003, In: Agriculture Acosystems & Environment. 100, 1, p. 39-51 13 p.

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

  17. Published

    Agronomy as the science of primary food production

    Porter, John Roy, 2010, Proceedings of Agro2010 the XIth ESA Congress: 2010, Montpellier, France. p. 41-42 2 p.

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

  18. Published

    Agronomy as the science of sustainable food production

    Porter, John Roy, 2011, Climate change: challenges and opportunities in agriculture. AGRISAFE, p. 12-15 4 p.

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

  19. Published

    An ¤analysis of leaf emergence of spring wheat cv. Minaret grown in different environments

    Ewert, F., Porter, John Roy, Mulholland, B. J. & Vanhoutvin, S., 1996. 2 p.

    Research output: Contribution to conference › Paper › Research

  20. Published

    Analyse af IPCC delrapport 2 - Effekter, klimatilpasning og sårbarhed: med særligt fokus på Danmark

    Christensen, J. H., Arnbjerg-Nielsen, K., Grinsted, Aslak, Halsnæs, K., Jeppesen, E., Madsen, H., Olesen, J. E., Porter, John Roy, Refsgaard, J. C. & Olesen, M., 2014, København: Miljøministeriet, Naturstyrelsen. 54 p.

    Research output: Book/Report › Report › Research

  21. Published

    Annex I: summary of presentations

    Porter, John Roy & Wollenweber, B., 1997. 4 p.

    Research output: Contribution to conference › Paper › Research

  22. Published

    Annual report 1995 on the ESPACE-Wheat research at Long Ashton Research Station (UK) and Taastrup (DK)

    Ewert, F. & Porter, John Roy, 1996, ESPACE-Wheat : European Stress Physiology and Climate Experiment : project 1: Wheat : progress report. Hertstein, U. & Jäger, H-J. (eds.). p. 41-50 10 p.

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

  23. Published

    Anthesis date and agricultural risk and the effects of high temperature extremes on wheat

    Porter, John Roy & Wollenweber, B., 1997. 15 p.

    Research output: Contribution to conference › Paper › Research

  24. Published

    Assessing models for parameters of the Ångström-Prescott formula in China

    Liu, X., Xu, Y., Zhong, X., Zhang, W., Porter, John Roy & Liu, W., 2012, In: Applied Energy. 96, p. 327-338 12 p.

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

  25. Published

    Bioethanol i tanken udelukker ikke mad i maven

    Felby, C., Streibig, Jens Carl & Porter, John Roy, 2007, In: Dagbladet Information. 2 p.

    Research output: Contribution to journal › Contribution to newspaper - Newspaper article › Communication

  26. Published

    Biofuels: putting current practices in perspective

    Porter, John Roy, Chirinda, N., Felby, C. & Olesen, J. E., 2008, In: Science. 320, 5882, p. 1420-1420 1 p.

    Research output: Contribution to journal › Comment/debate › Research

  27. Published

    Biomass for biofuels - the challenge and a possible way forward

    Felby, C., Porter, John Roy, Rasmussen, S., Schjoerring, Jan K., Nielsen, T. H., Sakuragi, Y. & Willats, W. G. T., 2009. 1 p.

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

  28. Published

    Calibration of the Ångström-Prescott coefficients (a, b) under different time scales and their impacts in estimating global solar radiation in the Yellow River basin

    Liu, X., Mei, X., Li, Y., Zhng, Y., Wang, Q., Jensen, J. R. & Porter, John Roy, 2009, In: Agricultural and Forest Meteorology. 149, 3-4, p. 697-710 14 p.

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

  29. Published

    Can crop-climate models be accurate and precise? A case study for wheat production in Denmark

    Montesino San Martin, M., Olesen, J. E. & Porter, John Roy, 2015, In: Agricultural and Forest Meteorology. 202, p. 51-60 10 p.

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

  30. Published

    Challenges in designing ecological agriculture education: a Nordic perspective on change

    Francis, C. A., Lieblein, G., Helenius, J., Salomonsson, L., Olsen, H. & Porter, John Roy, 2001, In: Renewable Agriculture and Food Systems (Print Edition). 16, 2, p. 89-95 7 p.

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

  31. Published

    Chemical stress can increase crop yield

    Cedergreen, Nina, Felby, C., Porter, John Roy & Streibig, Jens Carl, 2009, In: Field Crops Research. 114, 1, p. 54-57 4 p.

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

  32. Published

    Choice of the Ångström-Prescott coefficients: are time-dependent ones better than fixed ones in modelling globat solar irradiance?

    Liu, X., Mei, X., Li, Y., Porter, John Roy, Wang, Q. & Zhang, Y., 2010, In: Energy Conversion and Management. 51, 12, p. 2565-2574 10 p.

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

  33. Published

    Choosing crops as energy feedstocks

    Porter, John Roy, Kirsch, M. M. N., Streibig, Jens Carl & Felby, C., 2007, In: Nature Biotechnology. 25, 7, p. 716-717 1 p.

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

  34. Published

    Climate Change and Agriculture: The heart of a perfect storm

    Porter, John Roy, 2010, Abstracts of Papers. International Institute for Bet Research, p. 2-3

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

  35. Published

    Climate change impact and adaptation for wheat protein

    Asseng, S., Martre, P., Maiorano, A., Roetter, R. P., O'Leary, G. J., Fitzgerald, G. J., Girousse, C., Motzo, R., Giunta, F., Babar, M. A., Reynolds, M. P., Kheir, A. M. S., Thorburn, P. J., Waha, K., Ruane, A. C., Aggarwal, P. K., Ahmed, M., Balkovic, J., Basso, B., Biernath, C. & 47 others, Bindi, M., Cammarano, D., Challinor, A. J., De Sanctis, G., Dumont, B., Rezaei, E. E., Fereres, E., Ferrise, R., Garcia-Vila, M., Gayler, S., Gao, Y., Horan, H., Hoogenboom, G., Izaurralde, R. C., Jabloun, M., Jones, C. D., Kassie, B. T., Kersebaum, K., Klein, C., Koehler, A., Liu, B., Minoli, S., San Martin, M. M., Mueller, C., Kumar, S. N., Nendel, C., Olesen, J. E., Palosuo, T., Porter, John Roy, Priesack, E., Ripoche, D., Semenov, M. A., Stockle, C., Stratonovitch, P., Streck, T., Supit, I., Tao, F., Van der Velde, M., Wallach, D., Wang, E., Webber, H., Wolf, J., Xiao, L., Zhang, Z., Zhao, Z., Zhu, Y. & Ewert, F., 2019, In: Global Change Biology. 25, 1, p. 155-173

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

  36. Published

    Climate variability and crop yields in Europe

    Porter, John Roy & Semenov, M. A., 1999, In: Nature. 400, 6746, p. 724 1 p.

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

  37. Published

    Combining af disease model with a crop phenology model to assess and map pest risk; Karnal bunt disease (Tilletia indica) of wheat in Europe

    Baker, R. H. A., Sansford, C. E., Gioli, B., Miglietta, F., Porter, John Roy & Ewert, F., 2005, Ikke angivet. Christian Ejlers, 6 p.

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

  38. Published

    Comments on "Testing winter wheat simulation models predictions against observed UK grain yields" by Landau et al. (1998)

    Jamieson, P. D., Porter, John Roy, Semenov, M. A., Brooks, R. J., Ewert, F. & Ritchie, J. T., 1999, In: Agricultural and Forest Meteorology. 96, p. 157-161 5 p.

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

  39. Published

    Conceptual foundation for innovative education in agroecology

    Francis, C., Helenius, J., Lieblein, G., Porter, John Roy, Olsen, H. & Salomonsson, L., 2000, Integrating concepts of sustainability into education for agriculture and rural development. Bor, W. V. D., Holen, P., Wals, A. & Filho, W. L. (eds.). Frankfurt am Main: Peter Lang, Vol. 6. p. 125-137 13 p. (Environmental education, communication and sustainability).

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

  40. Published

    Conseil scientifique national de I'INRA: rapport de synthése du groupe de travail sur la propriété intellectuelle sur les connaissances dans le secteur végétal

    Barbier-Brygoo, H., Chilliard, Y., Durand, J., Elmayan, T., Goldringer, I. & Porter, John Roy, 2014, INRA. 64 p.

    Research output: Book/Report › Report › Research › peer-review

  41. Published

    Considering agriculture in IPCC assessments

    Porter, John Roy, Howden, M. & Smith, P., 2017, In: Nature Climate Change. 7, 10, p. 680-683 4 p.

    Research output: Contribution to journal › Comment/debate › Research › peer-review

  42. Published

    Contribution of crop models to adaptation in wheat

    Chenu, K., Porter, John Roy, Martre, P., Basso, B., Chapman, S. C., Ewert, F., Bindi, M. & Asseng, S., 2017, In: Trends in Plant Science. 22, 6, p. 472-490 19 p.

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

  43. Published

    Copenhagen experiments, improvement of the AFRCWHEAT model and application to climate change scenarios

    Wollenweber, B., Schellberg, J. & Porter, John Roy, 1997, Ikke angivet. European Commission, Fourth Framework Programme, DGXII, 5 p.

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

  44. Published

    Creating a Nordic regional research network in agroecology: links to MSc education

    Francis, C., Breland, T. A., Lieblein, G., Salomonsen, L., Geber, U., Sriskandarajah, N., Langer, Vibeke, Porter, John Roy & Helenius, J., 2006, Changing European farming systems for a better future: New visions for rural areas. Langeveld, H. & Röling, N. (eds.). Wageningen Academic Publishers, p. 320-324 5 p.

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

  45. Published

    Crop modelling for integrated assessment of risk to food production from climate change

    Ewert, F., Rötter, R. P., Bindi, M., Webber, H., Trnka, M., Kersebaum, K. C., Olesen, J. E., van Ittersum, M. K., Janssen, S., Rivington, M., Semenov, M. A., Wallach, D., Porter, J. R., Stewart, D., Verhagen, J., Gaiser, T., Palosuo, T., Tao, F., Nendel, C., Roggero, P. P. & 2 others, Bartosová, L. & Asseng, S., 2015, In: Environmental Modelling & Software. 72, p. 287-303 17 p.

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

  46. Published

    Crop models, CO2, and Climate Change

    Ewert, F., Porter, John Roy & Rounsevell, M. D. A., 2007, In: Science. 315, 5811, p. 459 1 p.

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

  47. Published

    Crop responses to climatic variation: Papers of a Discussion Meeting held at The Royal Society on 26 and 27 April 2005 Food crops an a changing climate

    Porter, John Roy & Semenov, M. A., 2005, In: Philosophical Transactions of the Royal Society of London. Biological Sciences. 360, 1463, p. 2021-2035 15 p.

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

  48. Published

    Crop-climate models need an overhaul

    Rötter, R. P., Carter, T. R., Olesen, J. E. & Porter, John Roy, 2011, In: Nature. 1, p. 175-177 3 p.

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

  49. Published

    Danish agriculture and its sustainability: a profile

    Porter, John Roy & Hjort Petersen, E., 1997, In: Ambio. 26, 7, p. 462-465 4 p.

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

  50. Published

    Data requirements for crop modelling - applying the learning curve approach to the simulation of winter wheat flowering time under climate change

    Montesino San Martin, M., Wallach, D., Olesen, J. E., Challinor, A. J., Hoffman, M. P., Koehler, A. K., Roetter, R. P. & Porter, John Roy, 2018, In: European Journal of Agronomy. 95, p. 33-44 12 p.

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

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