Canadian Forest Service Publications
Are mild and cold spells a stress factor for the spruce budworm? 2019. Delisle, J. NRCan, CFS, Laurentian Forestry Centre, Québec, QC. Branching Out from the Canadian Forest Service, Laurentian Forestry Centre. No. 119. 2 p.
Issued by: Laurentian Forestry Centre
Catalog ID: 39543
Series: Branching Out (LFC - Québec)
Availability: PDF (download)
According to the Intergovernmental Panel on Climate Change, extreme weather events are expected to increase in intensity, duration, and frequency with global warming. Intense cold spells as low as -40 to -45°C have swept through Quebec over the past decade. However, more recent winters have generally been milder, especially in 2018, when a long period of thaw was followed by freezing cold in mid-March. These leaps in temperature were an opportunity for Canadian Forest Service researchers to assess the impact of such phenomena on the winter survival of young spruce budworm larvae.
Also available under the title:
Redoux et vagues de froid : un défi pour la tordeuse des bourgeons de l'épinette? L’Éclaircie du Service canadien des forêts, Centre de foresterie des Laurentides. No 119. (French)