At the interface of ecophysiology and functional ecology, our research involves different disciplines (chemistry, geography, mathematics), tools (simulation and statistical modelling) and playground (tundra, taiga, temperate grasslands and forests, wetlands and drylands), but can be sumed up through four main contributions, presented below:
Contribution 1 – Refining strategies of photosynthesis within and across habitats
Contribution 2 – The multidimensional niche of plant species
Contribution 3 – Towards a better understanding of the influence of plant communities on ecosystem functioning
Contribution 4 – Importance of soils in shaping functional strategies of plants and micro-organisms
Compared to climate, soils have received little attention from studies about the sources of variation in plant and micro-organism functional strategies. This is notably because climate is an important driver of soil formation. However, my team highlighted that soils, either independently or in conjunction with climate, influence significantly the functional strategies of plants and microbes related to resource use for photosynthesis, soil respiration and soil phosphorus cycling (A14, A21,A24, A38,A39). For instance, collaborating with an Australian network, we show that soil pH as a key property favoring nitrogen nutrition and photosynthetic rate (A33). As such, we revealed the how, i.e. the key properties of soils that influenced biological processes, and the where, i.e. the location where functional strategies are more influenced by soil properties than climate. We geospatialized our results, which allows generalization and utilization of our result at very large scale. As a result, other studies compared their results at local scales to our global available predictions.
Contribution 5 – Feedback effects of Arctic vegetation on active layer and permafrost