Forest Investment Account

Abstract of FIA Project 2001014

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Investigation into the impact and historic occurrence of western spruce budworm, Choristoneura occidentalis, in the Kamloops region

Author(s): MacLauchlan, Lorraine; British Columbia Ministry of Forests - Southern Interior Forest Region
Imprint: [Kamloops], B.C.: B.C. Ministry of Forests, Southern Interior Forest Region, 2003
Subject: Forest Investment Account (FIA), Biology, Ecology, Entomology, Forestry, Choristoneura Occidentalis
Series: Forest Investment Account (FIA) - Land Base Investment Program - Innovative


In 2002, 39 impact assessment plots were established and 644 cores were collected for analyses from Interior Douglas-fir sites in the Kamloops Region. The tree ring collection and analyses will complete a data set that has been compiled over the past 3 years. This data will be used to determine impact and historic outbreak patterns of the western spruce budworm, Choristoneura occidentalis, throughout its range in the Kamloops Region. There were 8 outbreak periods identified in the tree ring chronologies over a number of sites. Outbreak duration was between 5 to 8 years and the number of years between outbreak periods ranged from 10 to 48 years. Not all sites experienced each of these outbreaks therefore outbreak periodicity would vary from site to site.
Lorraine Maclauchlan.

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Updated August 02, 2006 

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