Alexandre Lhosmot- Phd
- PostDoc Position at Université de Montréal
Alexandre Lhosmot
- Phd
- PostDoc Position at Université de Montréal
Postdoctoral researcher at Université de Montréal
- working on the Can-Peat project
About
21
Publications
3,942
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Citations
Introduction
I am an early-career researcher studying water and carbon fluxes between wetlands, the atmosphere, and downstream hydrosystems. My PhD work focused on constraining water origins and greenhouse gas exchanges between the atmosphere and a mid-mountain temperate peatland. Currently, as a postdoctoral researcher at the Université de Montréal, I am quantifying the water and carbon balances of a thawing boreal peatland complexe near the southern permafrost limit in western Canada.
Current institution
Additional affiliations
September 2019 - present
Position
- PhD Student
Description
- CRITICAL PEAT : Carbon Reactivity In The Interactions Coupling Atmospheric Layer andPEATland ; Case study in Frasne (Doubs, France)
February 2019 - June 2019
Laboratoire Edytem
Position
- Internship
Description
- Fréquence et volume des déstabilisations rocheuses dans les parois à permafrost de haute montagne. Traitement et analyse de 14 années de mesures LiDAR dans le massif du Mont Blanc.
Publications
Publications (21)
Permafrost thaw profoundly changes landscapes in the Arctic-boreal region, affecting ecosystem composition, structure, function and services and their hydrological controls. The water balance provides insights into water movement and distribution within a specific area and thus helps understand how different components of the hydrological cycle int...
Since the end of the 20th century, each decade has been warmer than the previous one in the European Alps. As a consequence, Alpine rock walls are generally facing high rockfall activity, likely due to permafrost degradation. We use a unique terrestrial laser scanning derived rockfall catalog over 18 years (2005–2022) compared with photographs (185...
Despite covering only 3% of the global land surface, peatlands are an active part of the Critical Zone (CZ) exchanging large water and greenhouse gas (GHG) fluxes with the surrounding aquifers, surface waters, and the atmosphere. While ecosystem services of peatlands (carbon and water storage, buffering of local climate) are essential to address 21...
Peatlands are efficient carbon sinks due to waterlogged soils causing oxygen depletion and slowing organic matter decomposition, leading to peat accumulation. However, peatlands are also a natural source of methane (CH4), a powerful greenhouse gas, to the atmosphere. Methane production (by methanogens) and oxidation (by methanotrophs) are controlle...
Peatlands cover only 3 % of emerged lands, but their carbon stock represents about 30 % of the global soil organic carbon. Climate change and local anthropogenic disturbances deeply affect the hydrological functioning of peatlands. This may trigger carbon fluxes to surface waters and the atmosphere, thus leading to a positive feedback for global wa...
Peatlands are wetlands furnishing many ecosystem services (carbon storage, water storage/filtration, specific biodiversity, climate archives). While these services have a key role to address the challenges of the 21st century - climate, biodiversity, and water resources - they are directly threatened by human activities (drainage) and climate chang...
Peatlands provide a large panel of socio-ecosystemic services such as biodiversity, water and carbon storage, and amenities. Hydrological and geochemical interactions between peats and their surroundings are expected to be favored in mountainous areas, which are nowadays increasingly sensitive to climate changes. In order to provide an integrated s...
To understand the variability of methane (CH4) fluxes between a temperate mid-altitude Sphagnum-dominated peatland and the atmosphere, we monitored simultaneously eddy covariance, hydrometeorological and physical parameters between April 2019 and December 2021. The site was a CH4 source for the atmosphere, with a cumulative emission of 23.9 ± 0.6 g...
Continental hydrosystems and in particular peatlands play an important role in the carbon cycle of the Critical Zone (CZ). Peatlands are important sinks for organic carbon and have therefore been extensively studied. However, peatlands are not only important for the fate of organic carbon, but they also affect the cycle of Dissolved Inorganic Carbo...
Groundwater (GW) inputs potentially modify the hydrological cycle of peatlands and associated downstream ecosystems in karstic regions. However, the interplay between ground and surface water is complex and depends on climatic conditions and land-use. Suspected in the Jura Mountains since decades, we present here a study on the ecological role of k...
From water rock-interaction to methanogenesis: How climate induced raise of groundwater inputs might favor CH4 fluxes in the mid latitude/altitude Frasne peatland, Jura Mountains, France. Abstract Peatlands are socio-ecosystems that constitute an inherent part of the Critical Zone in which water quality and quantity are key components of biogeochem...
Mitigating and adapting to global changes requires a better understanding of the response of the Biosphere to these environmental variations. Human disturbances and their effects act in the long term (decades to centuries) and consequently, a similar time frame is needed to fully understand the hydrological and biogeochemical functioning of a natur...
Peatlands and associated ecosystem services are sensitive to climate changes and anthropogenic pressures such as drainage. This study illustrates these effects on the Forbonnet bog (7 ha), belonging to the Frasne peatland complex (~300 ha, French Jura Mountain) and shows how they can inform about the ecohydrological functioning of peatlands. The so...
Peatland hydrology forms, together with vegetation cover and carbon dynamics, a sensitive interconnected three-pillar system, which furnishes essential ecosystem services from the local (specific biodiversity, interaction with the watershed) to the global scale (carbon and fresh water storage). The present study focuses on the hydrological function...
Peatlands are habitats for a range of fragile flora and fauna species. Their eco-physicochemical characteristics make them as outstanding global carbon and water storage systems. These ecosystems occupy 3% of the worldwide emerged land surface but represent 30% of the global organic soil carbon and 10% of the global fresh water volumes. In such sys...
In the framework of climate changes, peatland ecosystems are compartments of the Critical Zone of growing importance for greenhouse gas (GHG) exchanges with the atmosphere. Peatlands contain about 30 % of the total organic soil carbon worldwide (IPCC, 2019). Interactions of GHG between atmosphere and peatland are potentially controlled by organic m...
Etant donnée que la variabilité des apports en eau impacte la conservation des stocks de C (Laggoun-Défarge et Muller, 2008; Joosten et Clarke,. 2002). Le changement climatique met en danger ces stocks, la compréhension et la prédiction de ses effets est un enjeu capital dans le cadre d'une politique du bilan carbone.
Une modélisation simple et ap...
