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Lapierre, Jean-François

Assistant Professor

Contact:

  • Telephone 514-343-6792 Pav. PAVILLON MARIE-VICTORIN \ Ext. F-058

Website
Website

Lapierre, Jean-François

Research expertise

Aquatic ecosystems are biogeochemical hotspots in a complex landscape that undergoes rapid natural and human-driven changes in land-use, land-cover, hydrology, and climate. The pathways by which these changes affect aquatic ecosystem functioning, however, remain poorly understood due to the scale disconnect that limits knowledge transfer between local, process-based studies and broad-scale, pattern-based studies in aquatic biogeochemistry.

My research is at the interface of aquatic biogeochemistry and landscape ecology and focuses on the coupling between ecological and biogeochemical processes along common environmental gradients that dictate the temporal and spatial patterns in aquatic dissolved organic matter (DOM), a master variable with direct and indirect influence on virtually every process occurring in the water column of lakes and rivers. The overarching goal of my research program is to disentangle the pathways through which rapid changes in climate and land-use at the landscape-level drive the fate of terrestrial carbon, nutrients and contaminants in continental watersheds. 

Areas of expertise

Current projects

  • DOM biogeochemistry in aquatic ecosystems. How does hydrology and land-use/land-cover affect DOM optical and chemical properties, degradability, and its impacts on aquatic processes?
  • The importance of scale in linking climate, landscape and limnological properties. How do variables with contrasting spatial structure relate over spatial scales, and how does this translate into sub-continental patterns in aquatic biogeochemistry?
  • Coupled dynamics of carbon, nutrients and contaminants across environmental gradients. How do human-related pressures (land-use, hydro-electric development, climate change) affect the timing and location of the differential loadings and losses of carbon, nutrients and contaminants at the landscape level?

Publications

Courses given in the Department this term