Maximum Productivity Study

- Ancillary Studies -

growth & yield
ancillary studies

The maintenance of rigorous treatment regimes at "maximum productivity" study sites provides excellent opportunities for documenting the effects of large nutrient additions on above-and below-ground timber and non-timber resources. Several scientists and graduate students have undertaken companion studies at selected study sites in order to determine the effects of repeated fertilization on:

White pine weevil (Pissodes strobi) activity and tree defence mechanisms
Soil biota activity and diversity
Mycorrhizae and fine root mass
Litterfall and litter decomposition
Sapwood hydraulic properties
Needle longevity
Crown characteristics
Foliar nutrient balance
Understory biomass and diversity

Results from these studies have been, or will be, formally published in refereed journals.

Planned future studies include determining the effects of repeated fertilization on i) wood quality and value, ii) forest floor mass and soil chemistry, iii) above- and below-ground biomass production and allocation, and iv) carbon sequestration.

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Publications

B.C. Ministry of Forests publications can be downloaded from the following website:
http://www.for.gov.bc.ca/scripts/hfd/pubs/hfdcatalog/index.asp
The National Research Council of Canada grants permission to individuals to download or print single copies of articles published by the NRC Research Press. Canadian Journal of Forest Research articles (starting with vol. 27) can be downloaded from the following website:
http://pubs.nrc-cnrc.gc.ca/cgi-bin/rp/rp2_vols_e?cjfr

Amponsah, I.G. 2004. Factors contributing to variation in lodgepole pine (Pinus contorta) response to fertilization. Ph.D thesis, Department of Renewable Resources, University of Alberta, Edmonton, Alta. 98 pp.

Amponsah, I.G., P.G. Comeau, R.P. Brockley, and V.J. Lieffers. 2005. Effects of repeated fertilization on needle longevity, foliar nutrition, effective leaf area index, and growth characteristics of lodgepole pine in interior British Columbia, Canada. Can. J. For. Res. 35:440-451 [PDF].

Amponsah, I.G., V.J. Lieffers, P.G. Comeau, and R.P. Brockley. 2004. Growth response and sapwood hydraulic properties of young lodgepole pine following repeated fertilization. Tree Physiol. 24: 1099-1108.

Amponsah, I.G., V.J. Lieffers, P.G. Comeau, and R.P. Brockley. 2004. Repeated fertilization of lodgepole pine produced shorter, stouter trees with large lower branches and poorly formed upper crowns. University of Alberta, Centre for Enhanced Forest Management, Edmonton, Alta. EFM Research Note 01/2004.

Berch, S.M., R.P. Brockley, J. Battigelli, S. Hagerman, and B. Holl. 2006. Impacts of repeated fertilization on components of the soil biota under a young lodgepole pine stand in the interior of British Columbia. Can. J. For. Res. 36:1415-1426 [PDF].

vanAkker, L. 2002. The effects of fertilizer treatments on the resin canal defences of spruce and incidence of attack by the white pine weevil, Pissodes strobi. MS thesis, Faculty of Forestry, Dept. of Forest Sciences, University of British Columbia, Vancouver, B.C. 113 pp.

vanAkker, L., R.I. Alfaro, and R. Brockley. 2004. Effects of fertilization on resin canal defences and incidence of Pissodes strobi attack in interior spruce. Can. J. For. Res. 34: 855-862. [PDF]

vanAkker, L., R. Brockley, and R. Alfaro. 2005. Interactions between fertilization and white pine weevil (Pissodes strobi) attack in young interior spruce plantations. B.C. Ministry of Forests, Victoria. Extension Note 75.

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Last Modified: 2007 APR 20. Ministry contact: Frank van Thienen
Webmaster: For.Prodres@gov.bc.ca