University of Victoria Geography Department
 
Trisalyn Nelson – assistant professor
BSc (UVic.), MSc (UVic.), PhD (Wilfrid Laurier.)

Office: Cornett B340
Phone: 250-472-5620
Email: trisalyn@uvic.ca
Teaching
GEOG 228 - Digital Geomatics
GEOG 328 - GIS for Natural Science
GEOG 418 - Advanced Spatial Analysis and Geo-statistics
Research Interests

Dr. Trisalyn Nelson leads the Spatial Pattern Analysis & Research (SPAR) Laboratory in the Department of Geography at the University of Victoria. SPAR houses a research group interested in spatial and spatial-temporal analysis. The SPAR Laboratory combines a Geomatics computing facilities with extensive field equipment for data collection in marine, terrestrial, and urban environments. SPAR develops and applies spatial and spatial-temporal analysis methods to a variety of problems in natural and human environments. Research themes include the investigation of spatial-temporal trends in mountain pine beetle epidemics, the spatial distribution of mammals, the development of new spatial-temporal analysis methods, and the creation of techniques for utilizing modern and novel spatial data sources.

Refereed Publications

Berland, A, Nelson, T.A., Stenhouse, G. Graham, K. and Cranston, J. (In Press). The impact of landscape disturbance on grizzly bear habitat use in the Foothills Model Forest, Alberta, Canada. Forest Ecology and Management.

Lightowlers, C. Nelson, T.A., Setton, E. and Keller, P. (2008). Determining the spatial scale for analyzing mobile measurements of air pollution. Atmospheric Environment. 42(21) 5291-5303.

Nelson, T.A. and Boots, B. (2008). Detecting spatially explicit hot spots in landscape-scale ecology. Ecography. 31(5) 556-566.

Nelson, T.A., Duffus, D., Robertson, C., and Feyrer, L.J. (2008). Spatial-temporal patterns in intra-annual gray whale foraging: Characterizing interactions between predators and prey. Marine Mammal Science. 24(2): 356-370

Nelson, T., Boots, B., Wulder, M.A., and Carroll, A.L. (2007). The environmental characteristics of mountain pine beetle infestation hot spots. BC Journal of Ecosystems & Management. 8(1): 91–108.

Wulder, MA., JC. White, NC. Coops, T Nelson, and B Boots, (2007) Using local spatial autocorrelation to compare outputs from a forest growth model. Ecological Modelling. 209: 264-276.

Robertson, C., Nelson, T.A., Boots, B., and Wulder, M.A. (2007). STAMP : Spatial-temporal analysis of moving polygons. Journal of Geographical Systems. 9: 207-227.

Robertson, C., Nelson, T.A., and Boots, B. (2007). Mountain pine beetle dispersal: the spatial-temporal interactions of infestation. Forest Science. 53(3): 395-405.

Wulder, M.A., Nelson, T., Derkson, C., and Seeman, D. (2007) Snow cover variability across Central Canada (1978-2002) derived from satellite passive microwave data.  Climatic Change. 82:113-130.

Wulder, M.A., Nelson, T.A., and Seemann, D. (2007). Using spatial pattern to quantify relationship between samples, surroundings, and populations. Environmental Monitoring and Assessment. 131: 221-230.

Dymond, C., Wulder, M.A., Shore, T., Nelson, T., Boots, B., and Riel, B. (2006) Evaluation of risk assessment of mountain pine beetle infestations using GPS survey points. Western Journal of Applied Forestry. 21(1): 5-13.

Nelson, T., Boots, B., White, K., Smith, A. (2006) The Impact of Treatment on Mountain Pine Beetle Infestation Rates. BC Journal of Ecosystems & Management. 7(2):20-36.

Nelson, T., Boots, B., and Wulder , M.A. (2006) Representing Large Area Mountain Pine Beetle Infestations. Forestry Chronicle. March/April 82(2): 243-252.

Nelson, T., Boots, B., Wulder, M.A., Shore, T., Safranyik, L., and Ebata, T. (2006) The impact of data on the rating of forest susceptible to the mountain pine beetle infestations. Canadian Journal of Forest Research. 36(11): 2815-2825

Wulder, M.A., White, J.C., Dymond, C.C., Nelson, T., Boots, B., Shore, T.L. (2006) Calculating the risk of mountain pine beetle attack: A comparison of distance- and density-based estimates of beetle pressure. Journal of Environmental Informatics 8(2): 58-69.

Nelson, T., and Boots, B. (2005) Identifying Insect Infestation Hot Spots: An Approach Using Conditional Spatial Randomization. Journal of Geographical Systems. 7(3-4): 291-311.

Leckie, D.G., Gougeon, F.A, Tinis, S., Nelson, T., Burnett, C.N., and Paradine, D.  (2005) Automated tree recognition in old growth conifer stands with high resolution digital imagery.  Remote Sensing of Environment 94: 311-326.

Leckie, D.G., Tinis, S., Nelson, T., Burnett, C.N., Gougeon, F.A, Cloney, E., Paradine, D. (2005) Issues in species classification of trees in old growth conifer stands. Canadian Journal of Remote Sensing. 31(2): 175-190.

Nelson, T., Boots, B., and Wulder, M.A. (2005) Spatial and aspatial techniques for accuracy assessment of environmental point data extracted from remotely sensed imagery: An example using local maximum filtering (pdf).  Journal of Environmental Management 74:265-271. 

Nelson, T., Wilson , H.G., Boots, B., and Wulder, M.A. (2005) Use of ordinal conversion for radiometric normalization and change detection (pdf).  International Journal of Remote Sensing 26(3): 535-541. 

Wulder, M.A., White, J., Niemann, K.O., and  Nelson, T. (2004) Comparison of airborne and satellite high spatial resolution data for the identification of individual trees with local maxima filtering (pdf).  International Journal of Remote Sensing 25(11): 2225-2232.

Nelson, T., Boots, B., Wulder, M.A., and Feick, R. (2004) Predicting forest age classes from high spatial resolution remotely sensed imagery using Voronoi polygon aggregation (pdf). GeoInformatica 8(2): 143-155.

Nelson, T., Niemann, K O., and Wulder, M.A. (2002) Spatial statistical techniques for aggregating point objects extracted from high spatial resolution imagery (pdf).  Journal of Geographical Systems.  4(4): 423-433.

Devillers, R., and Nelson, T. (2001) GEOIDE Student’s Network. Geomatica. 55(4): 474.

Nelson, T., Wulder, M.A., and Niemann, K.O. (2000) Spatial resolution implications of digitizing aerial photography for environmental applications.  The Imaging Science Journal.  49: 223-232.

Carter, R., LeRoy, S., Nelson, T., Laroque, C., and Smith, D. (1999) Dendroglaciological investigations at Hilda Creek Rock Glacier, Banff National Park, Canadian Rocky Mountains.  Géographie physique et Quaternaire. 53: 365-371.