John Roy Porter
Professor, emeritus
Section for Crop Sciences
Højbakkegård Allé 13
2630 Taastrup
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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
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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
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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
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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
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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
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Determination of biomass accumulation in mixed belts of Salix, Corylus and Alnus species in combined food and energy production system
Ghaley, Bhim Bahadur & Porter, John Roy, 2014, In: Biomass & Bioenergy. 63, p. 86-91 6 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Relationship between C:N/C:O stoichiometry and ecosystem services in managed production systems
Ghaley, Bhim Bahadur, Sandhu, H. S. & Porter, John Roy, 2015, In: P L o S One. 10, 4, 14 p., e0123869.Research output: Contribution to journal › Journal article › Research › peer-review
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Emergy signature as a basis for sustainability valuation of agro-ecosystems
Ghaley, Bhim Bahadur, Montesino San Martin, M. & Porter, John Roy, 2011. 1 p.Research output: Contribution to conference › Poster › Research
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Ecosystem function and service quantification and valuation in a conventional winter wheat production system with DAISY model in Denmark
Ghaley, Bhim Bahadur & Porter, John Roy, 2014, In: Ecosystem Services. 10, p. 79-83 5 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Simulation of soil organic carbon effects on long-term winter wheat (Triticum aestivum) production under varying fertilizer inputs
Ghaley, Bhim Bahadur, Wosten, H., Olesen, J. E., Schelde, K., Baby, S., Karki, Y. K., Borgesen, C. D., Smith, P., Yeluripati, J., Ferrise, R., Bindi, M., Kuikman, P., Lesschen, J. & Porter, John Roy, 2018, In: Frontiers in Plant Science. 9, p. 1-9 1158.Research output: Contribution to journal › Journal article › Research › peer-review
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Quantification and valuation of ecosystem services in diverse production systems for informed decision-making
Ghaley, Bhim Bahadur, Vesterdal, Lars & Porter, John Roy, 2014, In: Environmental Science & Policy. 39, p. 139-149 11 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Soil-based ecosystem services: a synthesis of nutrient cycling and carbon sequestration assessment methods
Ghaley, Bhim Bahadur, Porter, John Roy & Sandhu, H. S., 2014, In: The International Journal of Biodiversity Science, Ecosystems Services & Management. 10, 3, p. 177-186 10 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Emergy synthesis of a combined food and energy production system compared to a conventional wheat (Triticum aestivum) production system
Ghaley, Bhim Bahadur & Porter, John Roy, 2013, In: Ecological Indicators. 24, p. 534-542 9 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Future contributions of crop modelling-from heuristics and supporting decision making to understanding genetic regulation and aiding crop improvement
Hammer, G. L., Kropff, M. J., Sinclair, T. R. & Porter, John Roy, 2002, In: European Journal of Agronomy. 18, p. 15-31 17 p.Research output: Contribution to journal › Journal article › Research › peer-review
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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
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Scaling-up AFRCWHEAT2 model to assess phenological development for wheat in Europe
Harrison, P. A., Porter, John Roy & Downing, T. E., 2000, In: Agricultural and Forest Meteorology. 101, p. 167-186 20 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Obituary: E.J.M. Kirby
Hay, R. K. M. & Porter, John Roy, 2011, In: Journal of Agricultural Science. 149, 4, p. 401 1 p.Research output: Contribution to journal › Journal article › Research › peer-review
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The physiology of crop yield
Hay, R. K. M. & Porter, John Roy, 2006, 2. udg. ed. Oxford: Blackwell Publishing. 309 p.Research output: Book/Report › Report › Research
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Globalt læringsmiljø om et globalt problem: en beskrivelse af et tværvidenskabeligt online kursus om klimaforandringer
Henriksen, Christian Bugge, Monty, A. & Porter, John Roy, 2010, In: Tidsskriftet Læring og Medier (LOM). 6, p. 1-21 21 p.Research output: Contribution to journal › Journal article › Research › peer-review
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E-learning, climate change and carbon footprints
Henriksen, Christian Bugge, Monty, A. & Porter, John Roy, 2009, In: Institute of Physics Conference Series. 1 p.Research output: Contribution to journal › Conference abstract in journal › Research
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Plant science and the food security agenda
Ingram, J. S. I. & Porter, John Roy, 2015, In: Nature Plants. 1, 2 p., 15173.Research output: Contribution to journal › Comment/debate › Research
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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
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VIII ESA Congress: book of proceedings
Jacobsen, S., Jensen, C. R. & Porter, John Roy, 2004, Copenhagen: Center for Skov, Landskab og Planlægning/Københavns Universitet. 968 p.Research output: Book/Report › Book › Education
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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
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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
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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
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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
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Reconciling alternative models of phenological development in winter wheat
Jamieson, P. D., Brooking, I. R., Semenov, M. A., McMaster, G. S., White, J. W. & Porter, John Roy, 2007, In: Field Crops Research. 103, 1, p. 36-41 6 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Modelling protein content and composition in wheat
Jamieson, P., Martre, P., Samoli, V., Porter, John Roy, Zyskowski, R. F., Semenov, M. & Triboi, E., 2006. 1 p.Research output: Contribution to conference › Poster › Research
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Energetic, economic and ecological balances of a combined food and energy system
Kuemmel, B., Langer, Vibeke, Magid, Jakob, de Neergaard, Andreas & Porter, John Roy, 1998, In: Biomass & Bioenergy. (4/5), p. 407-416 10 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Future education in ecological agriculture and food systems: a student-faculty evaluation and planning process
Lieblein, G., Francis, C., Barth-Eide, W., Torjusen, H., Solberg, S., Salomonsson, L. V., Ekblad, G., Persson, P., Helenius, J., Loiva, M., Seppänen, L., Kahiluoto, H., Porter, John Roy, Olsen, H., Sriskandarajah, N., Mikk, M. & Flora, C., 2000, In: Journal of Sustainable Agriculture. 16, 4, p. 49-69 21 p.Research output: Contribution to journal › Journal article › Research › peer-review
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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
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Global wheat production with 1.5 and 2.0°C above pre-industrial warming
Liu, B., Martre, P., Ewert, F., Porter, J. R., Challinor, A. J., Müller, C., Ruane, A. C., Waha, K., Thorburn, P. J., Aggarwal, P. K., Ahmed, M., Balkovič, J., Basso, B., Biernath, C., Bindi, M., Cammarano, D., De Sanctis, G., Dumont, B., Espadafor, M., Eyshi Rezaei, E. & 37 others, , Apr 2019, In: Global Change Biology. 25, 4, p. 1428-1444Research output: Contribution to journal › Journal article › Research › peer-review
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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
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Evaluation of temperature-based global solar radiation models in China
Liu, X., Mei, X., Li, Y., Wang, Q., Jensen, J. R., Zhang, Y. & Porter, John Roy, 2009, In: Agricultural and Forest Meteorology. 149, 9, p. 1433-1446 14 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Variation in reference crop evapotranspiration caused by the Ångström-Prescott coefficient: locally calibrated versus the FAO recommended
Liu, X., Mei, X., Li, Y., Wang, Q., Zhang, Y. & Porter, John Roy, 2009, In: Agricultural Water Management. 96, 7, p. 1137-1145 9 p.Research output: Contribution to journal › Journal article › Research › peer-review
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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
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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
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Spring Wheat Leaf Appearance and Temperature: Extending the Paradigm?
MCMaster, G. S., Wilhelm, W. W., Palic, D. B. & Porter, John Roy, 2003, In: Annals of Botany. 91, 6, p. 697-705 8 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Variability and scaling: matching methods and phenomena
Marshall, B., Crawford, J. W. & Porter, John Roy, 1997, Scaling-up : from cell to landscape. Gardingen, P. R. V., Foody, G. M. & Curran, P. J. (eds.). Cambridge: Cambridge University Press, Vol. 63. p. 253-272 20 p. (Society for Experimental Biology seminar series).Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication
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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
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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
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Modelling the responses of grain protein and composition to environmental variations
Martre, P., Triboï, E., Jamieson, P. D. & Porter, John Roy, 2004. 1 p.Research output: Contribution to conference › Paper › Research
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Modelling protein content and composition in relation to crop nitrogen dynamics for wheat
Martre, P., Jamieson, P. D., Semenov, M. A., Zyskowski, R. F., Porter, John Roy & Triboi, E., 2006, In: European Journal of Agronomy. 25, 2, p. 138-154 17 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Ten facts about land systems for sustainability
Meyfroidt, P., de Bremond, A., Ryan, C. M., Archer, E., Aspinall, R., Chhabra, A., Camara, G., Corbera, E., DeFries, R., Díaz, S., Dong, J., Ellis, E. C., Erb, K. H., Fisher, J. A., Garrett, R. D., Golubiewski, N. E., Grau, H. R., Grove, J. M., Haberl, H., Heinimann, A. & 30 others, , 2022, In: Proceedings of the National Academy of Sciences of the United States of America. 119, 7, 12 p., e2109217118.Research output: Contribution to journal › Journal article › Research › peer-review
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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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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
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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
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Temperature, CO2 and the growth and development of wheat: changes in the mean and variability of growing conditions
Moot, D. J., Henderson, A. L., Porter, John Roy & Semenov, M. A., 1996, In: Climatic Change. 33, 3, p. 351-368 18 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Rate of change in harvest index during grain-filling of wheat
Moot, D. J., Jamieson, P. D., Henderson, A. L., Ford, M. A. & Porter, John Roy, 1996, In: Journal of Agricultural Science. 126, p. 387-395 9 p.Research output: Contribution to journal › Journal article › Research › peer-review
ID: 3148511
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Food security and food production systems
Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review
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Emergy signature as a basis for sustainability valuation of agro-ecosystems
Research output: Contribution to conference › Poster › Research
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1162
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Risks associated with Tilletia indica, the newly-listed EU quarantine pathogen, the cause of Karnal bunt of wheat: EC 5. framework project QLK5-1999-01554
Research output: Book/Report › Report › Research
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