ECOPAR Comparative ecology of organisms, communities and ecosystems

Lucie MAHAUT

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Research questions

How ecological processes and human activities affect biodiversity and ecosystem functioning?

To address this question, I assemble approaches from community ecology, functional ecology and quantitative ecology. I mainly focus on cultivated ecosystems and their associated plant communities, including both cultivated and wild species (i.e. arable weeds). 

My researches hinge on three particular thematics:

1) Plant invasion: Which ecological processes drive plant invasion success? How invaded species affect local plant communities?

2) Weed community ecology: How stochastic and deterministic ecological processes shape weed community assembly in arable fields? Are weeds ecological outliers?

3) Biodiversity-ecosystem functioning: How the different facet of plant diversity (eg: species richness, functional diversity, species relative density) affect ecosystem functioning? How the diversity of cultivated species can be manipulated to increase yield stability?

 

Publications

Mahaut L., Fort F., Violle C., Freschet G., revision. Multiple facets of diversity effects on plant productivity: species richness, functional diversity, species identity and intraspecific competition. Journal of Functional Ecology

Mahaut L., Gaba S., Fried G., 2019. A functional diversity approach of crop sequences reveals that weed diversity and abundance show different responses to environmental variability. Journal of Applied Ecology. 56 (6): 1400-1409. doi: 10.1111/1365-2664.13389

Bourgeois B., Munoz, F., Fried, G., Mahaut, L., Armengot, L., Denelle, P., Storkey, J., Gaba, S., Violle, C., 2019. What makes a weed a weed? A large-scale evaluation of arable weeds through a functional lens. American Journal of Botany.106 (1): 90-100. doi: 10.1002/ajb2.1213

Fried G., Carboni M., Mahaut L., Violle C., 2019. Functional traits modulate plant community responses to alien plant invasion. Perspectives in Plant Ecology Evolution and Systematics. 37: 53-63. doi: 10.1016/j.ppees.2019.02.003

Fried G., Mahaut L., Pinston A., Carboni M., 2018. Abiotic constraints and biotic resistance control the establishment success and abundance of invasive Humulus japonicus in riparian habitats. Biological Invasions. 20 (2): 315-331. doi: 10.1007/s10530-017-1533-y

Mahaut L., Fried G., Gaba S. 2018. Patch dynamics and temporal dispersal partly shape annual plant communities in ephemeral habitat patches. Oikos. 127: 147-159. doi: 10.1111/oik.04415