Context: Old-growth boreal forests are recognized both for the distinct biodiversity they harbour and for the large amounts of carbon they store. The concept of "old-growth forest" however encompasses stands that are particularly heterogeneous in terms of history, structure, and composition, which also implies heterogeneity in biodiversity and carbon stocks. The main disturbance agents in boreal forests (timber harvesting and natural wildfires) also have impacts that vary depending on the structure and composition of old-growth stands. In this context, it is difficult to establish conservation targets capable of guaranteeing the maintenance of all habitats associated with old-growth forests, as well as the carbon stocks they have accumulated over centuries. This project will therefore draw on a monitoring network of more than fifty old-growth boreal forest plots in Québec to address the following objectives: 1) assess the correlation between old-growth forest carbon stocks and indirect biodiversity indicators (dendromicrohabitats and deadwood), 2) evaluate the association between bryophyte communities (inventoried as part of an associated PhD project) and soil fungal communities, identified here through metabarcoding, and 3) determine the extent to which forests regenerating from old clearcuts (>50 years) recover carbon and biodiversity characteristics approaching those of old-growth forests. The results of these analyses will be disseminated through scientific publications, conference presentations, and knowledge mobilization activities.

Project start dates: Winter 2027 semester (January – April) or Fall 2027 semester (September – December)

Candidate profile: We are looking for someone passionate about issues related to forest ecosystem ecology, biodiversity, natural disturbances, botany and/or mycology. A Master's degree in biology, ecology, forest sciences, or a related field is required. Academic record quality and demonstrated research potential will be among the criteria considered in the evaluation of applications. We place equal importance, however, on qualities such as curiosity, creativity, autonomy, and the ability to work as part of a team. Experience in bryology or molecular biology is an asset. Given the remote nature of the study sites, the ability to work in the field in wilderness settings and a valid driver's licence are required. Shortlisted candidates will be contacted for an interview following an initial review of their application.

Stipend: A research stipend of CAD $24,500/year for four years will be awarded to the selected candidate.

Location and supervision: The selected candidate will be based at the Institut de recherche sur les forêts (IRF) at the Rouyn-Noranda campus of the Université du Québec en Abitibi-Témiscamingue (UQAT). They will be supervised by Maxence Martin (IRF-UQAT), a specialist in old-growth boreal forests, and Xavier Cavard (IRF-UQAT), an expert in forest carbon.