1030 avenue de la Médecine
418.656.2131 extension 2003
My research project is part of the Sentinel North project that aims to investigate and anticipate the transformations of Nordic environments due the acceleration of the current global warming.
My research focuses on the study of microbiomes of Nordic environments through metagenomic and metatranscriptomic approaches. My research sites are mainly located near the CEN research stations of Kuujjuarapik (Lake 9K and SAS site) and Ward Hunt.
The aim of my work is to carry out a molecular survey of the microbial communities and associated environmental functions and then to study the evolution of the structure and metabolic potential of the microbial community in response to climate change. I am particularly interested in microbial mats colonizing rocks and sediments in many arctic and subarctic lakes (Lake 9K and Ward Hunt Lake). These microbial mats play an important role in carbon cycling in northern environments that could be strongly altered by current climate change. I am also studying microorganisms present in thermokarst lakes (SAS2). Thermokarst lakes exhibit massive emissions of green house gazes (methane and CO2), produced by microbial organic matter degradation. However, important seasonal variability was observed for the gases emissions, suggesting a strong influence of climate conditions on microbial community and activity. The aim of the research is therefore to better understand environmental factors shaping the microbial activity and methane production. These two ecosystems harbor a rich and diverse microbial community, which seems to be particularly receptive to environmental conditions. The study of these microorganisms is therefore important in order to understand and anticipate the modification of Northern ecosystems.
Vigneron, A., Cruaud, P., Bhiry, N., Lovejoy, C., Vincent, W.F., 2019. Microbial community structure and methane cycling potential along a thermokarst pond-peatland continuum. Microorganisms, 7(11), 486. DOI: 10.3390/microorganisms7110486 .
Vigneron, A., Lovejoy, C., Cruaud, P., Kalenitchenko, D., Culley, A.I., Vincent, W.F., 2019. Contrasting winter versus summer microbial communities and metabolic functions in a permafrost thaw lake. Frontiers in Microbiology, 10, 1656. DOI: 10.3389/fmicb.2019.01656.
Vigneron, A., Cruaud, P., Mohit, V., Martineau, M.-J., Culley, A.I., Lovejoy, C., Vincent, W.F., 2018. Multiple strategies for light-harvesting, photoprotection, and carbon flow in high latitude microbial mats. Frontiers in Microbiology, 9, 2881. DOI: 10.3389/fmicb.2018.02881.