John Roy Porter
Professor, emeritus
Section for Crop Sciences
Højbakkegård Allé 13
2630 Taastrup
- 2022
- Published
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
- 2021
- Published
Evaluation of Sustainability of Irrigated Crops in Arid Regions, China
Fan, F., Li, B., Zhang, W., Porter, John Roy & Zhang, F., 2021, In: Sustainability. 13, 1, 15 p., 342.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- Published
Vaccines, social measures and Covid19 - A European evidence-based analysis: Vaccines, social measures and Covid19
Porter, John Roy, 2021, medRxiv, 12 p. (medRxiv).Research output: Working paper › Preprint › Research
- Published
Deconstructing agronomic resource use efficiencies to increase food production
Porter, John Roy, Thorburn, P. J., Brown, H. E., Teixeira, E. I., Moot, D. J., Mills, A. & Christensen, Svend, 2021, In: Italian Journal of Agronomy. 16, 3, 6 p., 1694.Research output: Contribution to journal › Journal article › Research › peer-review
- 2020
- Published
Opinion: Agriculture green development
Porter, John Roy, 2020, In: Frontiers of Agricultural Science and Engineering. 7, 1, p. 117-119 3 p.Research output: Contribution to journal › Letter › Research › peer-review
- 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, , 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
- 2019
- 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, , 2019, In: Global Change Biology. 25, 1, p. 155-173Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Effects and relationships of grazing intensity on multiple ecosystem services in the Inner Mongolian steppe
Fan, F., Liang, C., Tang, Y., Harker-Schuch, I. & Porter, John Roy, 20 Jul 2019, In: Science of the Total Environment. 675, p. 642-650Research output: Contribution to journal › Journal article › Research › peer-review
- Published
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
- 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. 2518-2529Research output: Contribution to journal › Review › Research › peer-review
- 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, , 2019, In: Agricultural and Forest Meteorology. 264, p. 351-362 12 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 2018
- 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
- Published
Relationship between stoichiometry and ecosystem services: a case study of organic farming systems
Fan, F., Henriksen, Christian Bugge & Porter, John Roy, 2018, In: Ecological Indicators. 85, p. 400-408 9 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
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
- 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
- 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, , 2018, In: Agricultural Systems. 159, p. 260-274 15 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 2017
- 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
- 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
- Published
Recasting economics as if the climate and global ecology really mattered
Porter, John Roy, Howden, M., Smith, P. & Stokholm, M. S., 2017, In: Consilience: The Journal of Sustainable Development. 17, 1, p. 220-229 10 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 2016
- 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
- Published
Decoupling of greenhouse gas emissions from global agricultural production: 1970-2050
Bennetzen, E. H., Smith, P. & Porter, John Roy, 2016, In: Global Change Biology. 22, 2, p. 763-781 19 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Food and nutritional security requires adequate protein as well as energy, delivered from whole-year crop production
Coles, G. D., Wratten, S. D. & Porter, John Roy, 2016, In: PeerJ. 4, 17 p., e2100.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Valuation of ecosystem services in organic cereal crop production systems with different management practices in relation to organic matter input
Fan, F., Henriksen, Christian Bugge & Porter, John Roy, 2016, In: Ecosystem Services. 22, Part A, p. 117-127 11 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Review and analysis of vulnerability to rainfall variability and policy responses to agricultural water supply in Nigeria
Olayide, O. E., Tetteh, I. K., Porter, John Roy & Popoola, L., 2016, In: Journal of Food, Agriculture and Environment. 14, 2, p. 152-155 4 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Edited plants should not be patented: gene editing
Porter, John Roy, Durand, J. & Elmayan, T., 2016, In: Nature. 530, 7588, p. 33 1 p.Research output: Contribution to journal › Comment/debate › Research › peer-review
- Published
Food, hunger, health, and climate change
Woodward, A. & Porter, John Roy, 2016, In: The Lancet. 387, 10031, p. 1886-1887 2 p.Research output: Contribution to journal › Comment/debate › Research › peer-review
- 2015
- 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, , 2015, In: Environmental Modelling & Software. 72, p. 287-303 17 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
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
- Published
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
- 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
- Published
Significance and value of non.traded ecosystem services on farmland
Sandhu, H., Wratten, S., Costanza, R., Pretty, J., Porter, John Roy & Reganold, J., 2015, In: PeerJ. 3, 22 p., e762.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Empirical modelling of regional and national durum wheat quality
Toscano, P., Genesio, L., Crisci, A., Vaccari, F. P., Ferrari, E., La Cava, P., Porter, John Roy & Gioli, B., 2015, In: Agricultural and Forest Meteorology. 204, p. 67-78 12 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 2014
- 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
- 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
- Published
Summary for policymakers
Field, C. B., Barros, V. R., Mastrandrea, M. D. & Porter, John Roy, 2014, Climate change 2014: impacts, adaptation and vulnerability. . Vol. Part A. p. 1-32 32 p.Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Research › peer-review
- Published
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
- Published
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
- Published
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
- Published
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
- 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
- Published
Food security and food production systems
Porter, John Roy, Xie, L., Challinor, A., Cochrane, K., Howden, M., Iqbal, M. M., Lobell, D. & Travasso, M. I., 2014, Fifth Assessment Report of the Intergovernmental Panel on Climate Change. p. 1-82 82 p.Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Research › peer-review
- Published
Food security and food production systems
Porter, John Roy, Xie, L., Challinor, A. J., Cochrane, K., Howden, S. M., Iqbal, M. M., Lobell, D. B. & Travasso, M. I., 2014, Climate Change 2014: Impacts, Adaptation, and Vulnerability. Cambridge University Press, p. 485-533 53 p.Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review
- Published
Move on to a carbon currency standard
Porter, John Roy & Wratten, S., 2014, In: Nature Study. 506, p. 295 1 p.Research output: Contribution to journal › Comment/debate › Research › peer-review
- Published
Temperatures and the growth and development of maize and rice: a review
Sánchez, B., Rasmussen, A. & Porter, John Roy, 2014, In: Global Change Biology. 20, 2, p. 408-417 10 p.Research output: Contribution to journal › Review › Research › peer-review
- Published
Durum wheat quality prediction in Mediterranean environments: from local to regional scale
Toscano, P., Gioli, B., Genesio, L., Vaccari, F. P., Miglietta, F., Zaldei, A., Crisci, A., Ferrari, E., Bertuzzi, F., La Cava, P., Ronchi, C., Silvestri, M., Peressotti, A. & Porter, John Roy, 2014, In: European Journal of Agronomy. 61, p. 1-9 9 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 2013
- Published
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
- Published
Soil temperature manipulation to study global warming effects in arable land: performance of buried heating-cable method
Patil, R. H., Laegdsmand, M., Olesen, J. E. & Porter, John Roy, 2013, In: Environment and Ecology Research. 1, 4, p. 196-204 9 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Deconstructing crop processes and models via identities
Porter, John Roy & Christensen, Svend, 2013, In: Plant, Cell and Environment. 36, 11, p. 1919-1925 7 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- Published
Experimental assessment of ecosystem services in agriculture
Sandhu, H., Porter, John Roy & Wratten, S., 2013, Ecosystem services in agricultural and urban landscapes. Wratten, S., Sandhu, H., Cullen, R. & Costanza, R. (eds.). Wiley-Blackwell, p. 122-135 14 p.Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review
- 2012
- 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
- 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
- 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
- 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
- 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
- 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
- 2011
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 2010
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- Published
Climate Change and Agriculture: The heart of a perfect storm
Porter, John Roy, 2010, Abstracts of Papers. International Institute for Bet Research, p. 2-3Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research › peer-review
- Published
Det europæiske fødevaresystem og fremtidens scenarier for landbrug
Porter, John Roy, Porter, H. R. B. & Olesen, J. E., 2010, In: Geografisk Orientering. 2Research output: Contribution to journal › Journal article › Research
- 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. 71Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review
- 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
- 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. 18-19Research output: Contribution to journal › Journal article › Research
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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
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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
- 2009
- 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
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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
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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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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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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
- 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
- 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
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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
- 2008
- 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
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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
- 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
- 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
- 2007
- 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
- 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
- Published
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
- Published
Afgrødernes respons på klimaændringer
Porter, John Roy, 2007. 2 p.Research output: Contribution to conference › Paper › Research
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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
- Published
The value of producing food, energy and ecosystem services within an agro-ecosystem
Porter, John Roy, Costanza, R., Sigsgaard, L, Sandhu, H. S. & Wratten, S. D., 2007, Nature Precedings, 27 p.Research output: Working paper › Research
- 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
ID: 3148511
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7849
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Food security and food production systems
Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review
Published -
7172
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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
Published