John Roy Porter

John Roy Porter

Professor, emeritus

ORCID: 0000-0002-0777-3028

Publication year:
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51 - 100 out of 206Page size: 50
  1. 2013
  2. Published

    The role of uncertainty in climate change adaptation strategies - a Danish water management example

    Refsgaard, J. C., Arnbjerg-Nielsen, K., Drews, M., Halsnæs, K., Jeppesen, E., Madsen, H., Markandya, A., Olesen, J. E., Porter, John Roy & Christensen, J. H., 2013, In: Mitigation and Adaptation Strategies for Global Change. 18, 3, p. 337-359 23 p.

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

  3. 2012
  4. 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

  5. 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

  6. Published

    Durum wheat modeling: The Delphi system, 11 years of observations in Italy

    Toscano, P., Ranieri, R., Matese, A., Vaccari, F. P., Gioli, B., Zaldei, A., Silvestri, M., Ronchi, C., La Cava, P., Porter, John Roy & Miglietta, F., 2012, In: European Journal of Agronomy. 43, p. 108-118 11 p.

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

  7. 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

  8. Published

    Root carbon input in organic and inorganic fertilizer-based systems

    Chirinda, N., Olesen, J. E. & Porter, John Roy, 2012, In: Plant and Soil. 359, 1-2, p. 321-333 13 p.

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

  9. Published

    Sensitivity of crop yield and N losses in winter wheat to changes in mean and variability of temperature and precipitation in Denmark using the FASSET model

    Patil, R. H., Lægdsmand, M., Olesen, J. E. & Porter, John Roy, 2012, In: Acta Agriculturae Scandinavica. Section B. Soil and Plant Science. 62, 4, p. 335-351 17 p.

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

  10. 2011
  11. Published

    Vi skal brødføde ni milliarder

    Porter, John Roy, Streibig, Jens Carl & Weiner, Jacob, 1 Sep 2011, In: Weekendavisen Berlingske. p. 11 1 p.

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

  12. 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

  13. 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

  14. Published

    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

  15. Published

    How will growing cities eat?

    Porter, John Roy, Deutsch, L., Dumaresq, D. & Dyball, R., 2011, In: Nature. 469, p. 34 1 p.

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

  16. Published

    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

  17. Published

    Position statement on climate change

    Boote, K. J., Brouder, S. M., Clay, D., Gepts, P., Hatfield, J. L., Hillel, D., Izaurralde, R. C., Mosier, A. R., Porter, John Roy, Rosenzweig, C. E., Rice, C. W. & Climate Change Working Group, C. C. W. G., 2011, American Society of Agronomy. 12 p.

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

  18. Published

    Post-cold-storage conditioning time affects soil denitrifying enzyme activity

    Chirinda, N., Olesen, J. E. & Porter, John Roy, 2011, In: Communications in Soil Science and Plant Analysis. 42, 17, p. 2160-2167 8 p.

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

  19. Published

    Simulating soil N2O emissions and heterotrophic CO2 respiration in arabe systems using FASSET and MoBiLE-DNDC

    Chirinda, N., Kracher, D., Lægdsmand, M., Porter, John Roy, Olesen, J. E., Petersen, B. M., Doltra, J., Kiese, R. & Butterbach-Bahl, K., 2011, In: Plant and Soil. 343, 1-2, p. 139-160 22 p.

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

  20. 2010
  21. 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

  22. 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

  23. 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

  24. Published

    Det europæiske fødevaresystem og fremtidens scenarier for landbrug

    Porter, John Roy, Porter, H. R. B. & Olesen, J. E., 2010, In: Geografisk Orientering. 2

    Research output: Contribution to journal › Journal article › Research

  25. Published

    Effect of soil warming and rainfall patterns on soil N cycling in northern Europe

    Patil, R. H., Lægdsmand, M., Olesen, J. E. & Porter, John Roy, 2010, In: Agriculture, Ecosystems & Environment. 139, 1-2, p. 195-205 11 p.

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

  26. Published

    Emissions of nitrous oxide from arable organic and conventional cropping systems on two soil types

    Chirinda, N., Carter, M. S., Albert, K. R., Ambus, Per Lennart, Olesen, J. E., Porter, John Roy & Petersen, S. O., 2010, In: Agriculture, Ecosystems & Environment. 136, 3-4, p. 199-208 10 p.

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

  27. Published

    Feedings Capitals: Security and Sovereignty of Food and Land in Canberra, Copenhagen and Tokyo

    Porter, John Roy, 2010, Green Revolution 2.0: Food+Energy and Environmental Security: Session 52: Symposium--Global Food Security in a Changing Climate. American Society of Agronomy, p. s. 71

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

  28. Published

    Food security: focus on agriculture

    Porter, John Roy, Challinor, A., Ewert, F., Falloon, P., Fischer, T., Gregory, P., Van Ittersum, M. K., Olesen, J. E., Moore, K. J., Rosensweig, C. & Smith, P., 2010, In: Science. 328, p. 172 1 p.

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

  29. Published

    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

  30. Published

    Growth and yield response of winter wheat to soil warming and rainfall patterns

    Patil, R. H., Lægdsmand, M., Olesen, J. E. & Porter, John Roy, 2010, In: Journal of Agricultural Science. 148, 5, p. 553-566 14 p.

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

  31. 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

  32. Published

    Security and sovereignty of food and land in Camberra, Copenhagen and Tokoy

    Porter, John Roy, Deutsch, L., Dumaresq, D., Dyball, R. A. & Kazuhiko, T., 2010, The Ecological Society of America95th Annual Meeting,.

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

  33. Published

    Soil properties, crop production and greenhouse gas emissions from organic and inorganic fertilizer-based arable cropping systems

    Chirinda, N., Olesen, J. E., Porter, John Roy & Schjønning, P., 2010, In: Agriculture, Ecosystems & Environment. 139, 4, p. 584-594 11 p.

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

  34. Published

    The Rubisco enzyme and agricultural productivity

    Porter, John Roy & Wollenweber, B., 2010, In: Nature Correspondence. 463, 7283, p. 876 1 p.

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

  35. 2009
  36. 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

  37. 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

  38. 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

  39. 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

  40. Published

    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

  41. Published

    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

  42. Published

    The Copenhagen Climate Congress - future agricultural production and climate change

    Porter, John Roy, 2009, In: FNAT. 4, p. 10-11 2 p.

    Research output: Contribution to journal › Journal article › Communication

  43. Published

    The value of producing food, energy, and ecosystem services within an agro-ecosystem

    Porter, John Roy, Constanza, R., Sandhu, H., Sigsgaard, L & Wratten, S., 2009, In: Ambio. 38, 4, p. 186-193 8 p.

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

  44. Published

    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

  45. 2008
  46. Published

    Ecosystem services from agriculture

    Porter, John Roy & Sigsgaard, L, Apr 2008, Ecosystem Services and Drivers of Biodiversity Change. Report of the RUBICODE electronic conference. Grant, F., Harrison, J., Sykes, P., Skourtos, M., Rounsevell, M., Kluvánková-Oravská, T., Settele, J., Musche, M., Anton, C. & Watt, A. (eds.). p. 33 1 p.

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

  47. 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

  48. Published

    En global kulstofbank mod CO2-udslip

    Porter, John Roy & Streibig, Jens Carl, 2008, In: Berlingske Tidende. p. 23 1 p.

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

  49. Published

    The new pest risk analysis for Tilletia indica, the cause of karnal bunt of wheat, continues to support the quarantine status of the pathogen in Europe

    Sansford, C. E., Baker, R. H. A., Brennan, J. P., Ewert, F., Gioli, B., Inman, A., Kinsella, A., Magnus, H. A., Miglietta, F., Murray, G. M., Porta-Puglia, A., Porter, John Roy, Rafoss, T., Riccioni, L. & Thorne, F., 2008, In: Plant Pathology. 57, 4, p. 603-611 9 p.

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

  50. 2007
  51. Published

    We must know what is green before we tax

    Porter, John Roy, Bindi, M., Olesen, J. E. & Smith, P., 13 Nov 2007, In: Times Online. 1 p.

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

  52. Published

    Afgrødernes respons på klimaændringer

    Porter, John Roy, 2007. 2 p.

    Research output: Contribution to conference › Paper › Research

  53. 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

  54. 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

  55. 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

  56. 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

  57. 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

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