PhD defence

From the ashes: Hydrological and biogeochemical responses to wildfire in temperate peatlands

PhD candidate AL (Abbey) Marcotte MSc
Promotor dr. J (Juul) Limpens
External promotor PyroLife project: EU MSCA-ITN-2019 program
External copromotor prof dr. Nicholas Kettridge
Organisation Wageningen University, Plant Ecology and Nature Conservation
Date

Mon 26 May 2025 15:30 to 16:30

Venue Omnia, building number 105
Hoge Steeg 2
6708 PH Wageningen
+31 (0) 317 - 484500
Room Auditorium

Summary

Peatlands are defined by their thick, organic soil layers, providing valuable ecosystems services such as storing carbon, and regulating climate and water quality. However, these important services are being disrupted by extreme wildfires and droughts, which are becoming more frequent due to climate change. My research focused on two temperate peatlands in northwestern Europe, a region not often studied for wildfire impacts. I investigated how wildfires influence ash production and characteristics, the movement of metals and nutrients, and water chemistry in these post-fire landscapes. This work helps fill important knowledge gaps regarding physical and chemical responses to wildfire in temperate peatlands through space and time. Understanding these processes helps us predict how peatlands may respond to future wildfire events, and can guide management and restoration efforts to keep these ecosystems functioning and resilient as the climate changes.