Isabelle, Merle

Postdoctoral researcher

Agronomy, plant pathology, agroecology, ecological modeling



My research involves field trials and ecological modeling to study the effect of microclimate and management practices on diseases, pests and pollinators in agro-ecosystems such as tropical perennial agroforestry systems. I am interested in the development of decision support tools including these environmental drivers but also the socio-economic component through multi-agent modeling.


Motisi, N., Bommel, P., Leclerc, G., Robin, M.H., Aubertot, J.N., Arias Butron, A., Merle, I., Treminio, E., Avelino, J. (2022) Improved forecasting of coffee leaf rust by qualitative modeling: Design and expert validation of the ExpeRoya model. Agricultural Systems 197, 103352

Merle, I., Hipólito, J., Requier, F. (2022) Towards integrated pest and pollinator management in tropical crops. Current Opinion in Insect Science 50, 100866

Merle, I., Villarreyna-Acuña, R., Ribeyre, F., Roupsard, O., Cilas, C., Avelino, J. (2022) Microclimate estimation under different coffee-based agroforestry systems using full-sun weather data and shade tree characteristics. European Journal of Agronomy 132, 126396

Merle, I., Tixier, P., Virginio Filho, E.M., Cilas, C., Avelino, J. (2020) Forecast models of coffee leaf rust symptoms and signs based on identified microclimatic combinations in coffee-based agroforestry systems in Costa Rica. Crop Protection 130, 105046.

Merle, I., Pico, J., Granados, E., Boudrot, A., Tixier, P., Virginio Filho, E.M., Cilas, C., Avelino, J. (2020) Unraveling the complexity of coffee leaf rust behavior and development in different Coffea arabica agro-ecosystems. Phytopathology 110, 418-427.

Rohrlich, C., Merle, I., Mze Hassani, I., Verger, M., Zuin, M., Besse, S., Robène, I., Nibouche, S., Costet, L. (2018) Variation in physiological host range in three strains of two species of the entomopathogenic fungus Beauveria. PLoS One, 13(7), e0199199.

Boudrot, A., Pico, J., Merle, I., Granados, E., Vílchez, S., Tixier, P., Virginio Filho, E.M., Casanoves, F., Tapia, A., Allinne, C., Rice, R.A., Avelino, J. (2016) Shade effects on the dispersal of airborne Hemileia vastatrix uredospores. Phytopathology 106, 572–580.

Oral communications

Merle, I., Dupas, S., Requier, F. Comparing arthropod communities and their status as pollinators, pests and predators between organic and conventional cocoa plantations. BioInca Webinar, January 2022

Merle, I., Dupas, S., Requier, F. Limiting pollination of the cocoa tree. Journée du département ECOBIO, Montpellier, France, June 2021

Merle, I., Dupas, S., Requier, F. Limiting pollination of the cocoa tree. EGCEriales, Gif-sur-Yvette, France, May 2021

Merle, I., Villarreyna Acuna, R.A., Tixier, P., Ribeyre, F., Cilas, C., Avelino, J. Estimating microclimate in agroforestry systems based on nearby full sun measures to forecast coffee rust development. 4th World Congress on Agroforestry, Montpellier, France, 20-22 May 2019

Merle, I., Tixier, P., Cilas, C., Avelino, J. Identification of microclimatic variables determining the appearance of the symptoms of a leaf disease: case of the coffee leaf rust. 7th AgMIP Global Workshop, San José, Costa Rica, 24-26 April 2018

Merle, I., Tixier, P., Cilas, C., Avelino, J. Identification des variables microclimatiques déterminant l’apparition des symptômes d’une maladie foliaire: cas de la rouille orangée du caféier. Journées Jean Chevaugeon, Rencontres de phytopathologie-mycologie, Aussois, France, 15-19 January 2018