Name
The influence of regenerating forests on peatland catchment hydrology in Sudbury, Ontario
Date & Time
Wednesday, May 27, 2026, 4:00 PM - 4:15 PM
Description
Peatlands are highly effective global carbon sinks, largely controlled by their hydrology. The terrain and vegetation of the uplands surrounding certain peatlands influence runoff and water chemistry, which play an important role in their carbon sequestration potential. Ecosystems in Sudbury, Ontario, were severely damaged over years of harmful mining practices, resulting in the release of large amounts of stored CO2. Since the 1970s, there has been effort to regreen Sudbury through upland forest restoration. However, the peatlands are yet to be restored. Runoff arriving to the peatlands (largely fens) has been influenced by the regreening of the uplands, notably the addition of lime to the surface. The goal of this research is to quantify and describe the fluxes and flows of water from the hillslope and how it differs with regreening level, to aid in understanding for their restoration. Sites were instrumented to examine water balance components and specifically runoff amounts from the uplands. Surface runoff was measured using v-notched weirs and stream gauging. Wells and piezometers were used to assess groundwater flows. Forest vegetation surveys were conducted to quantify changes across restoration levels. Preliminary results suggest that actively restored sites have greater amounts of vegetation and soil and therefore less runoff, and runoff events were more subdued in comparison to naturally restored sites. This information can be used to determine if modifications to upland regreening efforts are necessary to enhance overall C sequestration potential. This will be important to achieve net-zero C within the region and other mining-impacted landscapes.
Location Name
DSU 302
Full Address
Dalhousie University
Halifax NS
Canada
Session Type
Oral Presentation
Abstract ID
154
Speaker Organization
Brandon University
Session Name
B6
Co-authors
Additional authors: Pete Whittington, Brandon University Colin McCarter, Nipissing University
Presenting Author
Anna Cushon