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Mises à jour de la recherche - Hiver 2024

Dernière mise à jour : 6 mars

Pour sa première réunion au cours de la nouvelle année, la communauté Silva21 s’est réunie pour nos réunions semestrielles de mise à jour afin de faire le point sur les projets, les derniers résultats et de promouvoir la discussion entre les thèmes de recherche et les institutions.


Cet hiver, nos réunions ont été divisées en quatre thèmes et comprenaient de nouvelles données des PHQ, ainsi que des mises à jour des partenaires du gouvernement et de l’industrie et des mises à jour sur le travail sur le terrain pour l’été à venir!



Vous trouverez ci-dessous un résumé des textes fournis par le PHQ pour leurs projets. Cliquez sur le titre et le nom de la recherche ci-dessous pour lire leur mise à jour.


 

Selection management in northern hardwood stands affected by beech bark disease - Sébastien Dumont (PhD student, Université Laval)


Northern hardwood forests are affected by global change in many ways, but increasing stress from exotic pests and pathogens is of particular concern to forest managers and silviculturists. Beech bark disease is one specific major concern that affects most of American beech’s range in North America. In infected stands, implementing a fine-scale silviculture to mitigate the impact of the disease and promote more resilient beech populations for natural regeneration relies heavily on our ability to adapt tree marking for partial harvesting. We monitored several individual characteristics, including external signs of the beech bark disease, on 871 beech trees in recently infected northern hardwood stands in Quebec, to assess their ability to predict mortality over an eight-year period. Our results showed that the diameter at breast height, the levels of Neonectria perithecia coverage on the stem, crown dieback and to a lesser extent, the level of canker coverage on the bark had the best capacity to predict individual short-term mortality. Therefore, we propose the integration of specific harvest priorities for beech trees to guide tree marking operations: 1) maximum diameter of 20 cm, 2) moderate (10%-49%) to severe (50% -100%) cover of perithecia, 3) crown dieback ≥ 25%, and 4) a severe presence of canker on the bark. Special attention must also be given to the retention of large BBD-resistant trees in the infected stands. 



Sébastien Dumont

PhD student

Université Laval

Supervisor: Alexis Achim

Project page

sebastien.dumont.2@ulaval.ca

Integration of climate drivers into tree-list growth modelling in the Acadian forest region - Jamie Ring (MSc student, UBC)

Silvicultural intensity and structural diversity in boreal mixedwoods - Ethan Ramsfield (MSc student, University of Alberta)

Determining the role of thinning on white spruce vulnerability to drought using a rainfall exclusion experiment - Chloe Larstone Hunt (MSc student, University of New Brunswick)

New techniques to assess re-establishment after severe disturbance and prioritization for remediation measures - Sarah Smith-Tripp (PhD Candidate, UBC)

Seeing the forest through the trees: Collaborative climate-informed forest governance in central interior British Columbia - Dane Pedersen (PhD student, UBC)

Detecting non-stand replacing disturbances in a near-real time context using Landsat and Harmonized Landsat Sentinel-2 time series - Madison Brown (MSc student, UBC)

LiDAR-derived topographic variables to help find suitable sugar maple sites for assisted migration efforts - Joao Paulo Czarnecki de Liz (PhD student, ULaval)

Wood properties as proxies for past climate conditions - Philippe Riel (MSc student, ULaval

Beyond common gardens: assessing the influence of heterogeneity on the success of assisted migration - Lisa Han (PhD student, University of Toronto




 

Si vous êtes membre de l’équipe Silva21 et souhaitez recevoir une copie de toutes les diapositives, connectez-vous à notre Espace Membres. Mot de passe oublié ? Envoyez un courriel à amy.wotherspoon@ubc.ca

Nos prochaines réunions de mise à jour auront lieu à l’assemblée générale annuelle, du 7 au 9 mai à Ottawa, en Ontario!



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