Bastien Castagneyrol (PhD)
School of biological sciences
INRA - UMR Biogeco
e-mail : bastien_at_gmail.com
My research focuses on the effect of tree diversities on insect herbivory in forest ecosystems. When I write "diversities", I mean tree diversity ranging from genetic diversity within populations to tree species diversity in landscape context.
My work rests on the general hypothesis that tree diversity provides resistance to insect herbivores. I use meta-analytical and field experiment approaches to test this hypothesis and explore the possible mechanisms involved in the diversity-resistance relationship.
My research shows that herbivory response to tree diversity depends on three main factors: (1) The relative abundance of tree species, (2) The composition of tree species assemblages, via tree apparency and resource availability to herbivores and (3) The feeding specialization of herbivores (generalist vs specialists).How these factors interact and determine the effect of tree diversities (i.e. genetic, specific, functional phylogenetic diversities…) on host choice and consumption by insects is likely to keep me busy me for a while.
- Baeten, L. et al. (2013) A novel comparative research platform designed to determine the functional significance of tree species diversity in European forests, Perspectives in plant ecology, evolution and systematics, 15(5): 281-291
- Castagneyrol, B., Jactel, H., Vacher, C. Brockerhoff, E., Koricheva, J. (in press), Effects of plant phylogenetic diversity on herbivory depend on herbivore specialization, Journal of applied ecology
- Gugerli, F., Brandl, R., Castagneyrol, B., Franc, A., Jactel, H., Koelewijn, H.-P., Martin, F., Peter, M., Pritsch, K., Schröder, H., Smulders, M. J. M., Kremer, A., Ziegenhagen, B. and Evoltree JERA3 Contributors (2013), Community genetics in the time of next-generation molecular technologies. Molecular Ecology, 22: 3198–3207
- Castagneyrol, B., Giffard, B., Péré, C., Jactel, H. (2013), Plant apparency, an overlooked driver of associational resistance to insect herbivory. Journal of Ecology, 101: 418–429
- Castagneyrol, B., Lagache, L., Giffard, B., Kremer, A., & Jactel, H. (2012) Genetic Diversity Increases Insect Herbivory on Oak Saplings. PLoS ONE, 7, e44247 EP -.
- Castagneyrol, B., and Jactel, H. 2012. Unraveling plant–animal diversity relationships: a meta-regression analysis.Ecology 93:2115–2124.