|
|
Alan J. Thomson
B.Sc. DLSHTM M.Sc. Ph.D
Victoria, BC, Canada
email: ajthomson@AdaptiveKM.com
My research on insect and disease population dynamics, impact, epidemiology and control covered the major Canadian forestry problems:
- Mountain Pine Beetle (Dendroctonus ponderosae) and its host lodgepole pine (Pinus contorta)
- Western spruce budworm (Choristoneura occidentalis and its host Douglas-fir (Pseudotsuga menziesii)
- Spruce budworm (Choristoneura fumiferana) and its host balsam fir (Abies balsamea)
- Dwarf mistletoes
- Root disease
- Other
See also insect and disease diagnostic systems. Climate and weather related studies are also included under that topic.
Publications on Mountain Pine Beetle (Dendroctonus ponderosae) and its host lodgepole pine (Pinus contorta)
Thomson, A.J. 2009. Climate indices and mountain pine beetle-killing temperatures. Forestry Chronicle. 85:105-109.
Safranyik, L., H. Barclay, A. Thomson and W.G. Riel. 1999. A population dynamics model for the mountain pine beetle, Dendroctonus ponderosae Hopk. (Coleoptera: Scolytidae). Natural Resources Canada, Canadian Forestry Service, Pacific Forestry Centre. Information Report BC-X-386.
Thomson, A.J. 1991. Simulation of mountain pine beetle (Dendroctonus ponderosae Hopkins) spread and control in British Columbia. Forestry Canada, Pacific Forestry Centre, Victoria, B.C., Information Report BC-X-329. 18p
Shore,T., P.A. Boudewyn, E.R. Gardner, and A.J.Thomson. 1989.A preliminary evaluation of hazard rating systems for the mountain pine beetle in lodgepole pine stands in British Columbia. Proc. Symp. on the management of lodgepole pine to minimize losses to the mountain pine beetle, Kalispell,MT, July 12-14, 1988. USDA For. Serv., Intermountain Research Station, Ogden, Utah, p 28 - 33.
Thomson, A.J. 1987. Comparison of lodgepole pine yield tables. Can. J. For. Res. 17: 1110-1114.
Thomson, A.J., L. Safranyik, D.M. Shrimpton and S. Whitney. 1985. A theory of mountain pine beetle population response to weather-induced change in host- resistance. p. 128-135. In The role of the host in the population dynamics of forest insects. L. Safranyik, Ed. Proc. IUFRO Workshop, Banff. September 4-7, 1983. Can. For. Serv.
Shrimpton, D.M. and A.J. Thomson. 1985. Relationship between phloem thickness and lodgepole pine growth characteristics. Can. J. For. Res. 15: 1004-1008.
Thomson, A.J. and D.M. Shrimpton. 1984. Weather associated with the start of mountain pine beetle outbreaks. Can. J. For. Res. 14: 255-258.
Shrimpton, D.M. and A.J. Thomson. 1983. Growth characteristics of lodgepole pine associated with the start of mountain pine beetle outbreaks. Can. J. For. Res. 13: 137-144.
Shrimpton, D.M. and A.J. Thomson. 1981. Use of physiological maturity to identify hazard of lodgepole pine stands from mountain pine beetle. In: Hazard- rating systems in forest insect pest management: symposium proceedings. USDA For. Serv. Gen. Tech. Rept. WO-27: 149-153.
Publications on Western spruce budworm (Choristoneura occidentalis and its host Douglas-fir (Pseudotsuga menziesii)
Thomson, A.J., and R. Benton. 2007. A 90-year sea warming trend explains outbreak patterns of western spruce budworm on Vancouver Island. Forestry Chronicle 83: 867-869.
Thomson, A.J., and R.I. Alfaro. 1990. A method to calculate yield correction factors for the overstory component of budworm-attacked Douglas-fir. For. Ecol. Manage. 31 : 255-267.
Alfaro, R.I., A.J. Thomson and G.A. Van Sickle. 1985. Quantification of Douglas-fir growth losses caused by western spruce budworm defoliation using stem analysis. Can. J. For. Res. 15: 5-9.
Thomson, A.J. 1985. Interpretation of the historical pattern of western spruce budworm outbreaks in British Columbia in relation to weather. In Recent advances in spruce Budworms Research, C.J. Sanders et al. (eds.). Proc. CANUSA Spruce Budworms Research Symposium, Bangor, Maine, Sept. 16-20, 1984. Can. For. Serv., Ottawa, Ont. 139-140.
Thomson, A.J. 1985. Summary of environmental factors discussion group. In. Recent advances in Spruce Budworms Research, C.J. Sanders et al. (eds.). Proc. CANUSA Spruce Budworms Research Symposium, Bangor, Maine, Sept. 16-20, 1984. Can. For. Serv., Ottawa, Ont. 93.
Thomson, A.J. 1985. The role of environmental factors in the population dynamics of western spruce budworm in British Columbia. In Recent advances in spruce Budworms Research, C.J. Sanders et al. (eds.). Proc. CANUSA Spruce Budworms Research Symposium, Bangor, Maine, Sept. 16-20, 1984. Can. For. Serv., Ottawa, Ont. 91.
Thomson, A.J.,S.M. Moncrieff and R.H.Silversides.1984. Use of digital terrain models in studies of western spruce budworm population dynamics and impact. CANUSA Newsletter 34: 3-5.
Thomson, A.J., R.F. Shepherd, J.W.E. Harris and R.H. Silversides. 1984. Relating weather to outbreaks of western spruce budworm, Choristoneura occidentalis (Lepidoptera: Tortricidae), in British Columbia. Can. Entomol. 116: 375-381.
Van Sickle, G.A., R.I. Alfaro and A.J. Thomson. 1983. Douglas-fir height growth affected by western spruce budworrn. Can. J. For. Res. 13: 445-450.
Thomson, A.J., J.W.E. Harris, R.H. Silversides and R.F. Shepherd. 1983. Elevation effects on rate of development of western spruce budworm in British Columbia. Can. Ent. 115: 1181-1187.
Thomson, A.J., R.I. Alfaro and G.A. Van Sickle. 1982. Evaluating effects of western spruce budworm on Douglas-fir volume growth. CFS Res. Notes. 2: 24-25.
Thomson, A.J. and S.M. Moncrieff. 1982. Prediction of bud burst in Douglas-fir by degree-day accumulation. Can. J. For. Res. 12: 448-452.
Thomson, A.J. and P.J. McNamee. 1982. Modelling western spruce budworm population dynamics and impact. CANUSA Newsletter, Canada-U.S.A. Spruce Budworm Program, No. 21 3-5.
Thomson, A.J., R.I. Alfaro and G.A. Van Sickle. 1982. Effects of western spruce budworm on Douglas-fir growth. CANUSA Newsletter, Canada-U.S.A. Spruce Budworm Program. No. 23 1-4.
Alfaro, R.I., G.A. Van Sickle, A.J. Thomson and E. Wegwitz. 1982. Tree mortality and radial growth losses cased by the western spruce budworm in a Douglas-fir stand in British Columbia. Can. J. For. Res. 12: 780-787.
Thomson, A.J. and G.A. Van Sickle. 1980. Estimation of tree growth losses caused by pest activity. Can. J. For. Res. 10: 176-182
Thomson, A.J. 1979. Evaluation of key biological relationships of the western budworm and its host trees. CFS Information Report BC-X-186.19p.
Publications on Spruce budworm (Choristoneura fumiferana) and its host balsam fir (Abies balsamea)
Thomson, A.J. 2009. Relationship of spruce budworm (Choristoneura fumiferana) emergence and balsam fir (Abies balsamea) bud flush to climate indices. Forestry Chronicle 85: 625-630.
Dwarf mistletoe publications
Thomson, A.J. 2002. Impact of Western hemlock dwarf mistletoe at the tree, stand, landscape and regional level. In: Maffei, Helen; Stone, James M. comps. 2002. Proceedings of the Fiftieth Western International Forest Disease Work Conference; October 7-11; 2002, Powell River, BC. State and Private Forestry: U.S. Department of Agriculture, Forest Service, Pacific Northwest Region.
Thomson, A.J., J.A. Muir, and K.J. Lewis. 1997. Variability in sub-regional impacts of dwarf mistletoe on mature lodgepole pine. For. Chron. 73: 371-375.
Thomson, A.J., R.I. Alfaro, W.J. Bloomberg and R.B. Smith. 1985. Impact of dwarf mistletoe on the growth of western hemlock trees having different patterns of suppression and release. Can. J. For. Res. 15: 665-668.
Alfaro, R.I., W.J. Bloomberg, R.B. Smith and A.J. Thomson. 1985. Epidemiology of dwarf mistletoe in western hemlock stands in south coastal British Columbia. Can. J. For. Res. 15: 909-913.
Thomson, A.J., R.B. Smith and R.I. Alfaro. 1984. Growth patterns in immature and mature western hemlock stands infected with dwarf mistletoe. Can. J. For. Res. 14: 518-522.
Thomson, A., R. Smith and R. Alfaro. 1983. Western hemlock growth losses caused by dwarf mistletoe. p 21-33. In Proc. Workshop on Management of Hemlock Dwarf Mistletoe (1983,Burnaby,B.C.). J. Muir (ed.). BCMF Pest Management Report Number 4.
Thomson, A.J. and R.B. Smith. 1983. Growth patterns in a young western hemlock plantation infested with dwarf mistletoe. Can. J. For. Res. 13: 972-978.
Thomson, A.J. 1979. Dwarf mistletoe seed capsule orientation and seed discharge in western hemlock. Can. J. Bot. 57: 1841-1844.
Root disease publications
Thomson, A.J., D.G. Goodenough, H.J. Barclay, Y.J. Lee and R.N. Sturrock. 1996. Effects of Phellinus root rot on Douglas-fir foliar chemistry. Can. J. For. Res. 26: 1440-1445.
Morrison, D.J., A.J. Thomson, D. Chu, F.G. Peet and T.S. Sahota. 1989. Variation in isozyme patterns of esterase and polyphenol oxidase among isolates of Armillaria ostoyae from British Columbia. Can. J. Plant Pathology. 11 : 229-234.
Morrison, D.J., A.J. Thomson, D. Chu, F. Peet and T.S. Sahota. 1985. Isozyme patterns of Armillaria infestation groups occurring in British Columbia. Can. J. Microbiol. 31: 651-653.
Thomson, A.J., F. Peet, T.S. Sahota, D.J. Morrison, A. lbaraki and E.E. White. 1984. Digital image analysis of isoelectric focusing patterns. Electrophoresis. 5: 55-56.
Morrison, D.J., A.J. Thomson, D. Chu, F.S. Peet, T.S. Sahota and U. Rink. 1984. Characterization of Armillaria intersterility groups by isozyme patterns. Proc. IUFRO Workshop on root and butt rots of forest trees. Ed. G.A. Kile, Australia. July 1983. p 2-11.
Thomson, A.J. 1979. Derivation of root contact probability: For. Sci. 25: 206- 212.
Other
McMullen, L.H., A.J. Thomson and R.V. Quenet. 1987. Sitka spruce weevil (Pissodes strobi) population dynamics and control: a simulation model based on field relationships. Can. For. Serv. Information Report BC-X-288. 20p.
Sahota, T.S., F.G. Peet, A.J. Thomson, and A. lbaraki. 1986. Changes in haemolymph proteins in relation to dormancy of Barbara colfaxiana Kft. and the influence of ecdysone and precocene on the protein composition. Can.Ent. 118: 839-847.
Barclay, H.J., I.S. Otvos and A.J. Thomson. 1985. Models of periodic inundation of parasitoids for pest control. Can. Ent. 1 17: 705-716.
Thomson, A.J., J.R. Sutherland, T.A.D. Woods and S.M. Moncrieff. 1983. Evaluation of seed disease effects in container-sown Sitka spruce. For. Sci. 29: 59-65.
Thomson, A.J. and T.S. Sahota. 1981. Competition and population quality in Dendroctonus rufipennis (Coleoptera: Scolytidae). Can. Ent. 113: 177-183.
Sahota, T.S. and A.J. Thomson. 1979. Temperature-induced variation in the rates of reproductive processes in Dendroctonus rufipennis (Kirby): A new approach to detecting changes in population quality. Can. Ent. 111: 1069-1078.
|