Do our forestry practices cause spruce budworm outbreaks?

We know from fossil records and from tree-ring analysis of very old trees that spruce budworm outbreaks have occurred for hundreds of years. There were major budworm outbreaks in the 1870s, 1910s, and 1950s. Current silviculture practices have only been in place since the 1970s or 1980s.

We also know that spruce budworm outbreaks occur in areas where there isn’t intensive silviculture practices. Planting spruce to replace the more vulnerable balsam fir is one of the main ways to reduce tree mortality during budworm outbreaks.

As part of this research, we are continuing to study how forest composition might influence outbreak intensity.

Got a Question? Ask Away.

We’ve got a pretty extensive list of questions and answers about our partnership, the research program, treatments and outcomes. But if you can’t find what you’re looking for in the categories below, please ask your question. We want to make sure New Brunswickers have complete access to all information about this research project.

If you didn’t find what you were looking for, ask us your questions about spruce budworm and we’ll post the responses here, or let you know if the answer already exists.