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Soil pH, cation nutrition and leaf photosynthesis in Maple forest
Soil pH, cation nutrition and leaf photosynthesis in Maple forest
Investigators: A. Proulx (MSc), J.D. Moore, G. Samson
Funding: FRQNT-New researcher (2017-NC-198009)
Keyword: Ecophysiology
Why does photosynthetic rate vary with soil pH? We explore direct and indirect impact through cations nutrition on leaf photosynthesis. (more...)
Urban forest, multiple benefices when old and spread out!
Urban forest, multiple benefices when old and spread out!
Coinvestigators: J. Isabelle (BSc), T. St-Laurent (BSc), L. Lamarque (PDF), A. Roy
Funding: Planification Stratégique UQTR.
Keyword: Ecosystem Science
Urban forests regulate the local climate, provide raw materials and food, and are a source of well-being. These services are subject to high risks of disturbance and stress. We are interested in the appropriate environment that maximizes these services and minimizes these risks for our UQTR university woodland. more details here...
Arctic wetlands, vulnerability to warming and shrubification
Arctic wetlands, vulnerability to warming and shrubification
Coinvestigators: Marilie Tétreault (MSc), E. Lévesque, P. Roy-Léveillée
Funding: Makivik
Keyword: Ecosystem Ecology
Open bogs, forested bogs, geliturbated bogs, palses, swamps... they are all wetlands! Are they equally sensitive to warming and shrubification in terms of carbon mineralisation? We investigate how different types of wetlands release CO2 into the atmosphere when their respective microbial community respond to warming and new plant molecules.
From plant arctic community response to its effect on tundra ecosystem dynamics
From plant arctic community response to its effect on tundra ecosystem dynamics
Coinvestigators: L. Deschamps (PhD), A. Morneault (MSc), C. Gignac (MSc), E. Lévesque (Prof), G. Gauthier (Prof), L. Rochefort (Prof)
Funding: FRQNT (2018-PR-208107 ), NSERC-Discover (2016-05716), UQTR Chair in Functional Arctic Ecology (2019-2022)
Keyword: Functional Ecology, Community Ecology, Ecosystem Science
Impact of land-uses on carbon stock and fluxes in the St-Pierre flooding plain
Impact of land-uses on carbon stock and fluxes in the St-Pierre flooding plain
Coinvestigators: J. Felix-Faure (PDF), R. Giguère-Tremblay (PhD), Steven Tessier (BSc), Roxane St-Pierre (BSc)
Funding: Pole Expertise Lac St-Pierre
Keyword: Ecosystem Ecology
In the Ramsar and Unesco biosphere reserve of the lac St-Pierre, we explore the determinisms of CO2 and CH4 fluxes and C sequestration rates along a disturbance gradient from the conventional Maize-Soja agriculture to the majestic silver maple forest. More info here
The Pourbaix' diagram as species niche?
The Pourbaix' diagram as species niche?
Coinvestigators: A. Morneault (BSc), G. Laperierre (PhD)
Funding: NSERC-Discover (2016-05716)
Keyword: Functional Ecology, Biogeochemistry
Hydrogen and redox potentials should determine the chemical habitat of living organisms, which rely on oxidoreduction processes. to get their energy and transform nutrients. Here, we explore if these two habitat dimensions may be considered as two niche ones for terrestrial species.
Leaf pH: a homeokinesis or homeostasis process? at species-or-community level?
Leaf pH: a homeokinesis or homeostasis process? at species-or-community level?
Coinvestigators: R. Giguere-Tremblay (BSc), I. Gosselin (BSc)
Funding: UQTR-FIR (2015-2016)
Keyword: Functional Ecology
pH is key to regulate internal metabolism. However, leaf pH has been shown homeostatic in experimental garden but homeokinetic in natural community, covarying with leaf N content. Here, we try to break this paradox. more details here...
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