Gaétan Bourgeois, Ph.D.

Research Scientist

Supervise the research team in bioclimatology and modelling for the creation and improvement of bioclimatic models that better characterize the impact of climate on agricultual crops and their pests. All these models are implemented in the last version of the CIPRA (Computer centre for agricultural pest forecasting) software, which serves as a "virtual laboratory" for bioclimatic modelling for many scientists, a knowledge integrator in several fields of expertise (climatology, plant physiology, entomology, plant pathology, post-harvest quality, mathematics, informatics, etc.) and a technology transfer vehicle par excellence for all stakeholders in the Canadian agricultural sector. With more than 150 models, CIPRA is now the largest collection of bioclimatic models operational in real- and forecasted in Canada. These models predict the phenology of several vegetable, fruit, cereal and forage crops, as well as the development of insect pests, diseases and physiological disorders that may affect them. Many of these models are also used in national scientific projects to study historical climate trends (e.g. 1950-2017) and the potential impacts of climate variability and change (e.g. 2041-2070).

Agriculture and Agri-Food Canada

Saint-Jean-sur-Richelieu (Quebec)

Education and awards

1986-1989: Ph.D. (Agriculture), Agricultural and Biological Systems Modeling, University of Florida, Gainesville (Florida), United States

1983-1985: M.Sc. (Biologie Végétale), Université Laval, Sainte-Foy (Québec), Canada

1979-1982: B.Sc. (Agriculture), McGill University, Sainte-Anne-de-Bellevue (Québec), Canada

Key publications

Denault, J.-T., Benjamin, L.-D., Lord, É., Boivin, C., Ricard, S. & Bourgeois, G. 2023. Climatology of the synchronism of late spring frost with sensible phenological stages of five major horticultural crops in Quebec. Poster presented at the 57th Canadian meteorological and oceanographic society congress. St.John's, NL.
2023 - View publication details
Lajeunesse, J, D. Plouffe, G. Bourgeois, P. Lafontaine, M. Normandeau Bonneau, J. Brière, A.-A. Couture, M. Bellemare et P.-O. Martel. 2023. Évaluation de nouveaux cultivars de camerisiers au Québec (PCA – Projet agroscientifique #102). Rapport Final.
2023 - View publication details
Gagnon A-È, Bourgeois G & Blatt S. 2020. Host plant and other volatiles for attraction of carrot weevil, Listronotus oregonensis. Entomological Society of America, virtual.
2020 - View publication details
Plouffe, D, Bourgeois, G, Beaudry, N, Chouinard, G and Choquette, D. 2020. Degree-day model for apple producing regions across Canada, uploaded into CIPRA. Manual for CIPRA models. November.
2020 - View publication details
Bourgeois G, Gagnon A-È, Fortier A-M, Thibodeau D, Plouffe D & Boivin G. 2019. Charançon de la carotte: Modèles bioclimatiques permettant de prédire l’activité de ponte des adultes d’été. Société d’entomologie du Québec, Drummondville, Qc, Canada.
2019 - View publication details
Gagnon A-È & Bourgeois G. 2019. Development of a second generation for the carrot weevil (Listronotus oregonensis) in the province of Quebec, Canada. Entomological Society of America, St. Louis, Missouri, USA.
2019 - View publication details
Gagnon A-È & Bourgeois G. 2019. Increased voltinism in carrot weevil under a warmer climate. Joint meeting of the Canadian Society for Ecology & Evolution, the Entomological Society of Canada, and the Acadian Entomological Society, Fredericton, New Brunswick, Canada.
2019 - View publication details
Gagnon, A.È., Bourgeois, G., Bourdages, L., Grenier, P., Blondlot, A. (2019). Impact of climate change on Ostrinia nubilalis (Lepidoptera: Crambidae) phenology and its implications on pest management, 21(3), 253-264. http://dx.doi.org/10.1111/afe.12327
2019 - View publication details
Gagnon, A.È., Bourgeois, G., Bourdages, L., Grenier, P., Blondlot, A. (2019). Impact of climate change on Ostrinia nubilalis (Lepidoptera: Crambidae) phenology and its implications on pest management. Agricultural and Forest Entomology, [online] 21(3), 253-264. http://dx.doi.org/10.1111/afe.12327
2019 - View publication details
Gendron St-Marseille, A.F., Bourgeois, G., Brodeur, J., Mimee, B. (2019). Simulating the impacts of climate change on soybean cyst nematode and the distribution of soybean. Agricultural and Forest Meteorology, [online] 264 178-187. http://dx.doi.org/10.1016/j.agrformet.2018.10.008
2019 - View publication details
Forney, C.F., LeBlanc, D.I., Vigneault, C., Toussaint, V., Bourgeois, G., Clément, A. and Bezanson, G. (2018). The interaction of storage temperature and duration on aroma volatiles in tomato fruit. Acta Hortic. 1194, 343-350
DOI: 10.17660/ActaHortic.2018.1194.49
https://doi.org/10.17660/ActaHortic.2018.1194.49
2018 - View publication details
Simard, M.-J., Nurse, R.E., Page, E.R., Bourgeois, G., and Beckie, H.J. (2016). "A detailed assessment of redroot pigweed (Amaranthus retroflexus) and common ragweed (Ambrosia artemisiifolia) seed shattering in wheat, corn and soybean.", Weed Science Society of America Meeting, San Jan, Puerto Rico, February 7-11, 2016.
2016 - View publication details
Forney, C., D. Leblanc, C. Vigneault, V. Toussaint, G. Bourgeois, A. Clement, and G. Bezanson. 2016. The interaction of storage temperature and duration on aroma volatiles in tomato fruit. VIII International Postharvest Symposium, Cartagena, Spain, June 21-24 (abstract)
2016 - View publication details
Neilsen, D., Smith, C.A.S., Bourgeois, G., Qian, B., Cannon, A.J., Neilsen, G.H., and Losso, I. (2015). "Modelling Changing Suitability for Tree Fruits in Complex Terrain.", 10th International Symposium on Modelling in Fruit Research and Orchard Management, Montpellier, France, June 2-7, 2015. (Abstract)
2015 - View publication details
Bourgeois, G., Plouffe, D., De Ell, J., and Pitiot, C. (2015). "Evaluation of a preharvest bioclimatic model for predicting the risk of Low temperature disorders of stored apples in Canada and France.", Acta Horticulturae (ISHS), 1068, pp. 243-252.
2015 - View publication details
Cormier, D., Chouinard, G., Vanoosthuyse, F., Pelletier, F., Bellerose, S., Bourgeois, G., Plouffe, D., and Joannin, R. (2015). "A phenology model for codling moth management in Quebec apple orchards.", Acta Horticulturae (ISHS), 1068, pp. 51-56.
2015 - View publication details
Gendron-St-Marseille, A.-F., Mimee, B., Bélair, G., Bourgeois, G., and Brodeur, J. (2015). "Bioclimatic modeling of soybean phenology and the soybean cyst nematode (Heterodera glycines) life cycle in a context of climate change.", 54th Annual meeting of the Society of Nematologists, East Lansing, Michigan, USA, July 19-24, 2015, Résumé publié dans Journal of Nematology.
2015 - View publication details
Bourgeois, G., Plouffe, D., Beaudry, N., Choquette, D., Chouinard, G., and Bellerose, S. (2015). "Using the DJPheno software for model calibration and validation of apple phenological stages.", Acta Horticulturae (ISHS), 1068, pp. 117-124.
2015 - View publication details
Blondlot, A., Gagnon, A.-È., Bourgeois, G., Brodeur, J., Mimee, B., and others (2015). "A research program to address agricultural stakeholders’ concerns regarding the evolution of crop pests associated with climate change.", Climate-Smart Agriculture Global Science Conference 2015, Montpellier, France, March 16-18, 2015.
2015 - View publication details
Gendron-St-Marseille, A.-F., Mimee, B., Bourgeois, G., and Brodeur, J. (2014). "Modélisation bioclimatique de la phénologie du soja et du nématode à kyste dans un contexte de changements climatiques.", Congrès annuel de la Société de Protection des Plantes du Québec (SPPQ) à St-Marc-sur-Richelieu, QC, Canada. Résumé publié dans Phytoprotection.
2014 - View publication details