We are interested by the complex interaction between species distribution, community structure and ecosystem functioning. Most of all, we are interested in spatial ecosystem ecology, from metapopulations to metaecosystems. Research activities conducted at the Chair are oriented by specific questions, and thus we study different ecosystems, from bacteria to forest stands. We also use theoretical models to develop hypotheses and extend our work beyond the technical limitations of empirical studies. Simulation and analytical models are useful because they provide us a tight control of the ecological processes we are interested in and because they could be manipulated in some manners that would be otherwise impossible on the field.
Poisot, T., Canard, E., Mouillot, D., Mouquet, N. and Gravel, D.. 2012. The dissimilarity of species interaction networks. Ecology Letters 15: 1353-1361. DOI: 10.1111/ele.12002. [PDF]
We present a framework and a new methodology to evaluate the spatial and temporal variability in network structure.
Harvey, E., Séguin, A., Archambault, P., Nozais, C. and Gravel, D.. 2013. Identity effects dominate the impacts of multiple species extinctions on the functioning of complex food webs. Ecology. http://dx.doi.org/10.1890/12-0414.1 [PDF]
We show that identity effects dominate in biodiversity-ecosystem functioning experiments, suggesting that generalizations are possible despite the inherent complexity of ecological interactions.
Mouquet, N., Gravel, D., Massol, F. and Calcagno, V. 2013. Extending the concept of keystone species to communities and ecosystems. Ecology Letters 16: 1-8. [PDF]
We use the metacommunity framework to extend the concept of keystones to entiore communities and ecosystems.