Cirad

Cyril Piou



Workplace

Disciplines

Contacts

Job experience and education

Since Sept. 2010 - Scientist at CIRAD, Bios, Pests and Diseases unit, Acridology team

July 2008 - August 2010 - Post-Doc with Etienne Prévost at INRA of St Pée sur Nivelle (64). Project: Potential effects of climate change on life history strategies of Atlantic salmon.

April 2007 - June 2008 - Post-Doc with Uta Berger at Dresden University (Germany). Project: Proposing an information criterion for individual-based models.

October 2003 - March 2007 - PhD with Uta Berger and Candy Feller at the Center for Tropical Marine Ecology of Bremen University (Germany). Project: Patterns and individual-based modeling of spatial competition within two main components of Neotropical mangrove ecosystems. PDF

September 2001 - Sept. 2003 - Master of Science ISATEC (International Studies in Aquatic Tropical Ecology). Field work at the Institute of Marine Studies of Belize University. Project: E ffects of hurricane disturbances on mangrove forest structure, studying the case of Belizean offshore islands and KiWi model simulations.

 

Research projects

 

My work in the acridology team is mainly focusing on desert locust in Western Africa. Since 2010, two main axes of work are emerging with several ongoing or planned projects:

  1. Phenotypic plasticity of Schistocerca gregaria
    In this axis, we are trying to understand deeper the processes linked to phase polyphenism of desert locust. 

    • In 2011-2012 a first project in collaboration with Marie-Pierre Chapuis, Christine Pagès and Benjamin Pélissié, showed us some parental and heritable effects of some growth-related individual parameters.
    • Since 2012, I'm collaborating with Koutaro Maeno to test maternal effects on survival and behavior of hatchlings.

  2. Modeling of gregarization risk of Schistocerca gregaria
    In this axis, we link environment and phase of desert locust in order to develop tools that could help in preventive management.

    • In 2010-2012, a first project in collaboration with Valentine Lebourgeois and other team members analysed NDVI/MODIS maps and time series coupled with survey data from the national center of locust control of Mauritania (CNLA). This work proposed a methodology to spatially show the potential gregarization risk of desert locust from satellite images. This will continue with further works on two directions: i) increasing in complexity the statistical tools used ii)  integrating the models in operational devices.
    • Since 2012, I'm co-supervising Sory Cissé, a PhD student from Mali under a grant from CLCPRO/FAO, who is working on density thresholds of gregarization from historical data and field observations.
    • I shall soon also work with Greg Sword and Steve Simpson on gregarization risk assessment depending on vegetation structure with the help of individual-based models.   

 

Publications

 

  1. Maeno, K. O., C. Piou, S. Ould Ely, M. A. O. Babah, B. Pélissié, S. A. Ould Mohamed, M. E. H. Jaavar, M. Etheimine, and S. Nakamura. 2013. Plant Size-dependent Escaping Behavior of Gregarious Nymphs of the Desert Locust, Schistocerca gregaria. Journal of Insect Behavior. in press DOI
  2. Piou, C. and E. Prévost. 2013 Contrasting effects of climate change in continental versus oceanic environments on population persistence and micro-evolution of Atlantic salmon. Global change biology 19,711-723. DOI
  3. Maeno, K. O., C. Piou, S. O. Ely, S. A. O. Mohamed, M. E. H. Jaavar, M. A. O. Babah, and S. Nakamura. 2012. Field Observations of the Sheltering Behavior of the Solitarious Phase of the Desert Locust, Schistocerca gregaria, with Particular Reference to Antipredator Strategies. Japan Agricultural Research Quarterly 46:339-345. PDF
  4. Piou, C. and E. Prévost. 2012. A demo-genetic individual-based model for Atlantic salmon populations: Model structure, parameterization and sensitivity. Ecological Modelling 231:37-52. DOI
  5. Vogt, J., A. Skóra, I. C. Feller, C. Piou, G. Coldren, and U. Berger. 2012. Investigating the role of impoundment and forest structure on the resistance and resilience of mangrove forests to hurricanes. Aquatic Botany 97:24-29. DOI
  6. Fontalvo-Herazo, M., C. Piou, J. Vogt, U. Saint-Paul, and U. Berger. 2011. Simulating harvesting scenarios towards the sustainable use of mangrove forest plantations. Wetlands Ecology and Management 19:397-407. DOI
  7. Bal, G., E. Rivot, E. Prévost, C. Piou, and J. L. Baglinière. 2011. Effect of water temperature and density of juvenile salmonids on growth of young-of-the-year Atlantic salmon Salmo salar. Journal of Fish Biology 78:1002-1022. DOI
  8. Tentelier, C. and C. Piou. 2011. Obstacles to migration constrain nest distribution of Atlantic salmon. Ecology of Freshwater Fish 20:400-408. DOI
  9. Piou, C., U. Berger, and K. Diele. 2010. Simulating Ucides cordatus Population Recovery on Fished Grounds. Pages 299-303 in U. Saint-Paul and H. Schneider, editors. Mangrove Dynamics and Management in North Brazil. Springer Berlin Heidelberg. DOI
  10. Feller, I., C. Lovelock, and C. Piou. 2009. Growth and Nutrient Conservation in Rhizophora mangle in Response to Fertilization along Latitudinal and Tidal Gradients. Smithsonian Contributions to the Marine Sciences 38:347-358. PDF
  11. Piou, C., U. Berger, and V. Grimm. 2009. Proposing an information criterion for individual-based models developed in a pattern-oriented modelling framework. Ecological Modelling 220:1957-1967. DOI
  12. Piou, C., U. Berger, and I. Feller. 2009. Spatial structure of a leaf-removing crab population in a mangrove of North-Brazil. Wetlands Ecology and Management 17:93-106. DOI
  13. Piou, C., U. Berger, H. Hildenbrandt, and I. Feller. 2008. Testing the intermediate disturbance hypothesis in species-poor systems: A simulation experiment for mangrove forests. Journal of Vegetation Science 19:417-424. DOI 
  14. Berger, U., V. Rivera-Monroy, T. Doyle, F. Dahdouh-Guebas, N. Duke, M. Fontalvo-Herazo, H. Hildenbrandt, N. Koedam, U. Mehlig, C. Piou and R. Twilley. 2008. Advances and limitations of individual-based models to analyze and predict dynamics of mangrove forests: A review. Aquatic Botany 89:260-274. DOI 
  15. Berger, U., C. Piou, K. Schiff ers, and V. Grimm. 2008. Competition among plants: Concepts, individual-based modelling approaches, and a proposal for a future research strategy. Perspectives in Plant Ecology, Evolution and Systematics 9:121-135. DOI
  16. Piou, C., U. Berger, H. Hildenbrandt, V. Grimm, K. Diele, and C. D'Lima. 2007. Simulating cryptic movements of a mangrove crab: Recovery phenomena after small scale fi shery. Ecological Modelling 205:110-122. DOI 
  17. Piou, C., I. Feller, U. Berger, and F. Chi. 2006. Zonation patterns of Belizean o ffshore mangrove forests 41 years after a catastrophic hurricane. Biotropica 38:365-374. DOI 
  18. Grimm, V., U. Berger, F. Bastiansen, S. Eliassen, V. Ginot, J. Giske, J. Goss-Custard, T. Grand, S. Heinz, G. Huse, A. Huth, J. U. Jepsen, C. Jorgensen, W. M. Mooij, B. Mueller, G. Pe'er, C. Piou, S. F. Railsback, A. M. Robbins, M. M. Robbins, E. Rossmanith, N. Rüger, E. Strand, S. Souissi, R. A. Stillman, R. Vabo, U. Visser, and D. L. DeAngelis. 2006. A standard protocol for describing individual-based and agent-based models. Ecological Modelling 198:115-126. DOI

Do not hesitate to email me if you need a pdf of one of these articles and your institution do not provide access to it.

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