Dr. Alain Leduc obtained his PhD in Environmental Science from UQAM in 1992
and the subject of his thesis was regional biogeography. Since 1993, he worked
with the Interuniversity Research Group in Forest Ecology (GREFi) as a professor
“sous-octroi”. Recently, he joined other members of the NSERC/UQAT/UQAM
Industrial Chair in Sustainable Forest Management with whom he was collaborating
for several years already. He specializes in landscape ecology and his main
field of interest is the influence of the scale on the development of species
response model to their environment. Most recently, his work is directed towards
growth prediction of young post-harvest stands based on large scale forest
inventories (8 to 30 years old).
Development of a sustainable forestry adapted to northern ecosystems
1. Large scale regionalization of northern forests based on fire regime and
forest cover composition. A well adapted forest management of the boreal forest
should be based upon a good recognition of his spatial variability.
Regionalisation should reflect the main ecological factors that are structuring
the forest mosaic. Most of the current ecological classification systems aren’t
taking into account disturbance regime variations when addressing
regionalization of the territory. This part of the study aims at adapting
ecological classification to a regionalization based upon the natural
2. Including forest fire risk when calculating annual allowable yield. The
northern boreal forest is more subject to fire than the mixed boreal forest.
Concern to whether or not it’s management in terms of silvicultural use is going
to sustain an industrial activity is arising. This milestone will provide an
illustration, by way of simulations, of the supply loss at risk for the forest
industry when managing these territories. The model will be able to distinguish
two potential sources of supply loss: the immediate loss related to forest fires
and the future loss resulting from regeneration failure
Characterization and prediction of the development of young post-harvest
The Eastern boreal forest has sustained an industrial forest management for
almost thirty years. In regions where natural forests dominate, the annual
allowable yield is estimated using standing wood volumes and rotation times
while in managed forests, the evaluation will rather be based on a the knowledge
and prediction of post-harvest stand development. In fact, the forest industry
of Eastern Canada is evolving towards a period where timber supply will be
resting on a capital in constant renewal rather than on a large existing forest
capital. In this context, it becomes crucial to be able to make early diagnosis
of the development and productivity of post-harvest stands to evaluate the
available timber supply of a given region.
The objective of our research is to establish links between past
silvicultural practices and prevalent conditions of second-growth stands. We
also wish to evaluate the different management options influencing establishment
and/or growth of stands. On a shorter term, this project aims at:
1. Evaluating regeneration quality (site classification based on distribution
coefficient, density and growth of commercial stems); defining the relationship
between regeneration state and environmental conditions, which can be either
permanent (physical attributes) or non-permanent (type of harvest, type of
harvested stands, competitive vegetation, etc.)
2. Refining actual prediction models of regeneration strata development.
Define regeneration delay period and development curves based on the actual
characteristics of pole stages.
Email : leduc.alain[at]uqam.ca
Publications : (see complete list)
- Simon Laquerre, Brian Harvey, Alain Leduc, 2011. Spatial analysis of response of trembling aspen patches to clearcutting in black spruce-dominated stands For. Chron. 87(1):77-85
- Annie Belleau, Alain Leduc, Nicolas Lecomte, Yves Bergeron, 2011. Forest succession rate and pathways on different surface deposit types in the boreal forest of northwestern Quebec Ecoscience 18(4):329-340 DOI:10.2980/18-4-3393
- Amar Madoui, Alain Leduc, Sylvie Gauthier, Yves Bergeron, 2010. Spatial pattern analyses of post-fire residual stands in the black spruce boreal forest of western Quebec. International Journal of Wildland Fire 19(8):1110-1126 DOI:10.1071/WF10049
- Simon Laquerre, Alain Leduc, Brian Harvey, 2009. Augmentation du couvert en peuplier faux-tremble dans les pessières noires du nord-ouest du Québec après coupe totale. Ecoscience 16(4):483-491 DOI:10.2980/16-4-3252
- Yassine Messaoud, Yves Bergeron, Alain Leduc, 2007. Ecological factors explaining the location
of the boundary between the mixedwood
and coniferous bioclimatic zones in the
boreal biome of eastern North America. Global Ecology and Biogeography. 16:90-102.
- Sophie Gachet, Alain Leduc, Yves Bergeron, Thuy Nguyen-Xuan, Francine Tremblay, 2007. Understory vegetation of boreal tree plantations: Differences in relation
to previous land use and natural forests. For. Ecol. Manage. 242(1):49-57. DOI:10.1016/j.foreco.2007.01.037
- Annie Belleau, Yves Bergeron, Alain Leduc, Sylvie Gauthier, Andrew Fall, 2007. Using spatially explicit simulations to explore size distribution
and spacing of regenerating areas produced by wildfires:
recommendations for designing harvest agglomerations
for the Canadian boreal forest. For. Chron. 83(1):72-82.