Canadian Forest Service Publications

Spruce budworm: heading north? 2013. De Grandpré, L.; Pureswaran, D. NRCan, CFS, Laurentian Forestry Centre, Québec, Que. Branching out from the Canadian Forest Service, Laurentian Forestry Centre. No. 88. 2 p.

Year: 2013

Issued by: Laurentian Forestry Centre

Catalog ID: 35411

Language: English

Series: Branching Out (LFC - Québec)

Availability: PDF (download)

Mark record


The spruce budworm, (Choristoneura fumiferana – SBW), a native insect found throughout Canada, is considered the most serious pest of fir and spruce forests in North America. It has been the subject of research for more than half a century, but questions remain: for example, with climate change, will the SBW change its diet or its distribution area? Canadian Forest Service (CFS) researchers have examined this issue.

Plain Language Summary

This publication reports on changes to spruce budworm (SBW) diet and range caused by climate change.

Historically, SBW causes greater damage to balsam fir stands. However, with milder temperatures, the SBW range could shift northward. This northward movement could have consequences for the nutrient cycle of the black spruce forest ecosystem.

Branching Out is a series of plain language fact sheets describing Laurentian Forestry Centre research projects.

Also available under the title:
La tordeuse des bourgeons de l’épinette : en route vers le nord? L’éclaircie du Service canadien des forêts, Centre de foresterie des Laurentides. No 88. (French)