My research mainly focuses on the interaction between natural disturbances and ecological processes at different spatial and temporal scales. I am particularly interested in long term response of Alpine, Boreal and Tropical ecosystems to fire disturbance, including biodiversity and ecosystem resilience aspects. I mainly study long-term ecological archives contained in natural sedimentary sites such as pollen, macroremains or charcoals to understand ecological processes and vegetation dynamics at millennia time scale. Link to teaching.
Julie’s research focuses primarily on understanding ecosystems dynamics and ecological processes at the landscape scale. She uses paleoecology and historical ecology to study past responses of vegetation structure to disturbances (especially fire), human impacts and climate change. She also uses a combination of remote sensing data and statistical modeling to study broad scale patterns of vegetation structure as a function of climate gradients, disturbance regimes and resource availability. Her main projects are towards understanding the drivers responsible for tree-grass coexistence in tropical savannas, and for transitions between forest and savanna ecosystems.
Evrard Bi-Tchoko Kouadio (PhD 2015-)
Evrard obtained a master’s degree in botany and phytotherapy (option Phytochemistry) from the University of Abobo-Adjame (Ivory Coast) and a Master in Ecology, Biodiversity (option tropical plant biodiversity) from the University of Montpellier (France). He is particularly interested by the interactions between climate, fire disturbances and forest dynamics in boreal and tropical zones with the objective of identifying mechanisms which lead to environmental changes on a global scale. The aim of his thesis is to highlight the Holocene changes in vegetation between the spruce-moss (closed canopy forests) and spruce-lichen (open canopy) forests and the factors underlying this dynamic in mosaic landscapes from the northern Quebec.
Andy Hennebelle (PhD 2016-)
I obtained an Engineer degree in Agronomy with a major in Forestry and forest management from AgroParisTech Nancy.
During my studies, I have worked on the Spruce Budworm outbreaks and its consequences in tree ring growth in Black Spruce and Balsam Fir forests in Québec. The second internship consisted in understanding how climate change will influence the phenology of 10 tree productive species in France.
My thesis focuses on the reconstruction of ecosystem processes in eastern Québec since the deglaciation by using pollen and charcoals records from lake sediments. My aim is to calibrate bioproxies taphonomy using recent sediment analysis, remote sensing and field surveys. I have a strong focus on understanding quantitatively vegetation, fire and climate dynamics. Those results will help to assess future projections and models for guiding forest management.
Augustin Feussom Tcheumeleu (PhD 2017-)
I am a senior forestry technician, holder of a Bachelor degree in sustainable forest management (Université de Lorraine, France), and a MSc in Biodiversity and ecosystems management (AgroParisTech et Université de Montpellier, France). I was trained in an interdisciplinary way in the context of tropical biodiversity, integrating biological knowledge and management issues. This covered various aspects of ecology, climate changes, relations between societies and ecosystems, conservation biology and management of ecosystems. I am interested in the answers that paleoecology provides to the main questions in ecology, particularly to the interactions between species, communities and climate over geologic time scale. Presently, I am studying Holocene climate changes, vegetation dynamics and fires in eastern Quebec. I will rely on sporomorphs, charcoals and Chironomids analysis of lake sediments, to characterize vegetation dynamics, to reconstruct paleofires and paleoclimates, and then assess the impact of climate change and other drivers on fire regimes.
Léa Peter (Maitrise 2017-)
I obtained my Bachelor’s degree in environmental geography at the University of Montreal where I had the chance to work on sedimentation rates in lake sediments. For my thesis, I will study the dynamics of northern populations of Sugar Maple Trees during the Holocene in relation to forest fires and Spruce Budworm outbreaks. I will analyse records of lake sediments for pollens, macroremains, charcoals and lepidoptera’s scales to reconstruct past vegetation and disturbances.
Jordan Paillard (Maitrise 2015-2018)
During my undergraduate degree in environmental geography at UdeM, I had the opportunity to work on various problematic as : the urban heat island remote sensing, the bog ponds physico-chemical variability and the Holocene fire frequency evolution of the Gatineau Park. Now candidate for a graduate degree in Biology at UQAT and recipient of a BMP scholarship, I’m studying the Holocene sugar maple migration in Abitibi-Témiscamingue and the influence of fire disturbance on this species.
Josianne Landry (Honor student, 2017) Influx pollinique et biomasse végétale Eeyou-Istchee – Baie-James
Jordan Fèvre (Master 2, EPHE, PARIS, 2011-2012)
Diversité herbacée et avalanche en forêt subalpine
Aurore Lucas (Master 2, University of Montpellier, 2010-2011)
Feu et dynamique de la biodiversité ligneuse dans la forêt boréale mixte canadienne de l’Ontario au cours de l’Holocène
Tasneem M. Elzein (Master 1 et 2, EPHE, Paris, 2008-2010).
Impact des avalanches de neige sur la structure, la composition et la dynamique des forêts subalpines
Thibault Frejaville (Master 1, University of Montpellier, 2008-2009).
Analyse paléoécologique des changements de diversité et de productivité