Patrick James

Chercheur associé
Écologie spatiale et modélisation

Associate Professor
University of Toronto

The James Lab 

  • Post-Doc. University of Alberta, 2011
  • Ph.D. Faculty of Forestry (University of Toronto, Canada). 2009
  • B.Sc. (Honours), Department of Zoology (University of Toronto, Canada). 2002

Research in our lab examines the role of spatial heterogeneity on spatial processes with particular emphasis on forest disturbance dynamics. Spatial heterogeneity generally refers to the composition and configuration of forest stands or regions that are composed of groups of trees of different ages or species. Forest disturbances such as fire, insect outbreaks, and logging (i.e., forest management) create distinct spatial patterns in forest ecosystems that either alone, or in combination, can have significant economic and ecological consequences. Within a landscape ecology framework and using tools such as spatial statistical analysis, simulation models, and landscape genetics, we investigate the role of spatial heterogeneity on broad-scale forest dynamics and their consequences for conservation.

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Chapitres de livre

  1. Doyon, F., Sturtevant, B.R., Papaik, M., Fall, A., Miranda, B., Kneeshaw, D.D., Messier, C., Fortin, M.-J., James, P.M.A. (2012) Assessing knowledge ambiguity in the creation of a model based on expert knowledge and comparison with the results of a landscape succession model in central Labrador. (Chap. 10) In Expert Knowledge and its Application in Landscape Ecology. (Perera, A.H., Drew, C.A. and Johnson, C.J., Eds.) Springer, pages 189-210

Livres, numéros spéciaux et actes de colloques publiés à titre d'éditeur

Articles révisés par un comité de lecture

  1. Landry, M., James, P.M.A., Kneeshaw, D.D., Kembel, S.W. (2022) Spruce budworm bacterial communities vary among sites and host tree species in a boreal landscape. Journal of Biogeography, 49(2):299-309
  2. Kneeshaw, D.D., Sturtevant, B.R., DeGrandpé, L., Doblas-Miranda, E., James, P.M.A., Tardif, D., Burton, P.J. (2021) The Vision of Managing for Pest-Resistant Landscapes: Realistic or Utopic? Current Forestry Reports
  3. Germain, M., Kneeshaw, D.D., De Grandpre, L., Desrochers, M., James, P.M.A., Vepakomma, U., Poulin, J.-F., Villard, M.-A. (2021) Insectivorous songbirds as early indicators of future defoliation by spruce budworm. Landscape Ecology, 36(10):3013-3027
  4. Robert, L.-E., Sturtevant, B.R., Kneeshaw, D.D., James, P.M.A., Fortin, M.-J., Wolter, P.T., Townsend, P.A., Cooke, B.J. (2020) Forest landscape structure influences the cyclic-eruptive spatial dynamics of forest tent caterpillar outbreaks. Ecosphere, 11(8)
  5. Sujii, P.S., Nagai, M.E., Zucchi, M.I., Brancalion, P.H.S., James, P.M.A. (2019) A genetic approach for simulating persistence of reintroduced tree species populations in restored forests. Ecological Modelling, 403:35-43
  6. Wittische, J., Janes, J.K., James, P.M.A. (2019) Modelling landscape genetic connectivity of the mountain pine beetle in western Canada. Canadian Journal of Forest Research, 49(11):1339-1348
  7. Cullingham, C.I., Janes, J.K., Hamelin, R.C., James, P.M.A., Murray, B.W., Sperling, F.A.H. (2019) The contribution of genetics and genomics to understanding the ecology of the mountain pine beetle system. Canadian Journal of Forest Research, 49(7):721-730
  8. Mayrand, P., Filotas, E., Wittische, J., James, P.M.A. (2019) The role of dispersal, selection, and timing of sampling on the false discovery rate of loci under selection during geographic range expansion. Genome, 62(11):715-727
  9. Burns, I., James, P.M.A., Coltman, D.W., Cullingham, C.I. (2019) Spatial and genetic structure of the lodgepole × jack pine hybrid zone. Canadian Journal of Forest Research, 49(7):844-853
  10. Johns, R.C., Bowden, J.J., Carleton, D.R., Cooke, B.J., Edwards, S., Emilson, E.J.S., James, P.M.A., Kneeshaw, D.D., MacLean, D.A., Martel, V. et al. (2019) A conceptual framework for the spruce budworm Early Intervention Strategy: Can outbreaks be stopped? Forests, 10(10)
  11. Marrec, R., Pontbriand-Pare, O., Legault, S., James, P.M.A. (2018) Spatiotemporal variation in drivers of parasitoid metacommunity structure in continuous forest landscapes. Ecosphere, 9(1)
  12. Robert, L.-E., Sturtevant, B.R., Cooke, B.J., James, P.M.A., Fortin, M.-J., Townsend, P.A., Wolter, P.T., Kneeshaw, D.D. (2018) Landscape host abundance and configuration regulate periodic outbreak behavior in spruce budworm Choristoneura fumiferana. Ecography, 41(9):1556-1571
  13. Legault, S., James, P.M.A. (2018) Parasitism rates of spruce budworm larvae: Testing the enemy hypothesis along a gradient of forest diversity measured at different spatial scales. Environmental Entomology, 47(5):1083-1095
  14. Marcer, A., Vidigal, D.S., James, P.M.A., Fortin, M.-J., Méndez-Vigo, B., Hilhorst, H.W.M., Bentsink, L., Alonso-Blanco, C., Picó, F.X. (2018) Temperature fine-tunes Mediterranean Arabidopsis thaliana life-cycle phenology geographically. Plant Biology, 20(S1):148-156
  15. James, P.M.A., Robert, L.-E., Wotton, B.M., Martell, D.L., Fleming, R.A. (2017) Lagged cumulative spruce budworm defoliation affects the risk of fire ignition in Ontario, Canada:. Ecological Applications, 27(2):532-544
  16. Burke, A., Kageyama, M., Latombe, G., Fasel, M., Vrac, M., Ramstein, G., James, P.M.A. (2017) Risky business: The impact of climate and climate variability on human population dynamics in Western Europe during the Last Glacial Maximum. Quaternary Science Reviews, 164:217-229
  17. Levesque, D., Hudon, C., James, P.M.A., Legendre, P. (2017) Environmental factors structuring benthic primary producers at different spatial scales in the St. Lawrence River (Canada). Aquatic Sciences, 79(2):345-356
  18. Ruppert, J.L.W., James, P.M.A., Taylor, E.B., Rudolfsen, T., Veillard, M., Davis, C.S., Watkinson, D., Poesch, M.S. (2017) Riverscape genetic structure of a threatened and dispersal limited freshwater species, the Rocky Mountain Sculpin (Cottus sp.). Conservation Genetics, 18(4):925-937
  19. James, P.M.A., Janes, J.K., Roe, A.D., Cooke, B.J. (2016) Modeling Landscape-Level Spatial Variation in Sex Ratio Skew in the Mountain Pine Beetle (Coleoptera: Curculionidae). Environmental Entomology, 45(4):790-801
  20. Maguire, D.Y., James, P.M.A., Buddle, C.M., Bennett, E.M. (2015) Landscape connectivity and insect herbivory: A framework for understanding tradeoffs among ecosystem services. Global Ecology and Conservation, 4:73-84
  21. James, P.M.A., Cooke, B., Brunet, B.M.T., Lumley, L.M., Sperling, F.A.H., Fortin, M.-J., Quinn, V.S., Sturtevant, B.R. (2015) Life-stage differences in spatial genetic structure in an irruptive forest insect: Implications for dispersal and spatial synchrony. Molecular Ecology, 24(2):296-309
  22. Burke, A., Levavasseur, G., James, P.M.A., Guiducci, D., Izquierdo, M.A., Bourgeon, L., Kageyama, M., Ramstein, G., Vrac, M. (2014) Exploring the impact of climate variability during the Last Glacial Maximum on the pattern of human occupation of Iberia. Journal of Human Evolution, 73:35-46
  23. Sturtevant, B.R., Miranda, B.R., Wolter, P.T., James, P.M.A., Fortin, M.-J., Townsend, P.A. (2014) Forest recovery patterns in response to divergent disturbance regimes in the Border Lakes region of Minnesota (USA) and Ontario (Canada). Forest Ecology and Management, 313:199-211
  24. Cullingham, C.I., James, P.M.A., Cooke, J.E.K., Coltman, D.W. (2012) Characterizing the physical and genetic structure of the lodgepole pine × jack pine hybrid zone: Mosaic structure and differential introgression. Evolutionary Applications, 5(8):879-891
  25. Fortin, M.-J., James, P.M.A., MacKenzie, A., Melles, S.J., Rayfield, B. (2012) Spatial statistics, spatial regression, and graph theory in ecology. Spatial Statistics, 1:100-109
  26. Gayathri Samarasekera, G.D., Bartell, N.V., Lindgren, B.S., Cooke, J.E.K., Davis, C.S., James, P.M.A., Coltman, D.W., Mock, K.E., Murray, B.W. (2012) Spatial genetic structure of the mountain pine beetle (Dendroctonus ponderosae) outbreak in western Canada: Historical patterns and contemporary dispersal. Molecular Ecology, 21(12):2931-2948
  27. James, P.M.A., Coltman, D.W., Murray, B.W., Hamelin, R.C., Sperling, F.A.H. (2011) Spatial genetic structure of a symbiotic beetle-fungal system: Toward multi-taxa integrated landscape genetics. PLoS ONE, 6(10):e25359
  28. James, P.M.A., Fortin, M.-J., Sturtevant, B.R., Fall, A., Kneeshaw, D.D. (2011) Modelling Spatial Interactions Among Fire, Spruce Budworm, and Logging in the Boreal Forest. Ecosystems, 14(1):60-75
  29. James, P.M.A., Sturtevant, B.R., Townsend, P., Wolter, P., Fortin, M.-J. (2011) Two-dimensional wavelet analysis of spruce budworm host basal area in the Border Lakes landscape. Ecological Applications, 21(6):2197-2209
  30. Roe, A.D., James, P.M.A., Rice, A.V., Cooke, J.E.K., Sperling, F.A.H. (2011) Spatial Community Structure of Mountain Pine Beetle Fungal Symbionts Across a Latitudinal Gradient. Microbial Ecology, 62(2):347-360
  31. James, P.M.A., Fleming, R.A., Fortin, M.-J. (2010) Identifying significant scale-specific spatial boundaries using wavelets and null models: Spruce budworm defoliation in Ontario, Canada as a case study. Landscape Ecology, 25(6):873-887
  32. Anderson, C.D., Epperson, B.K., Fortin, M.-J., Holderegger, R., James, P.M.A., Rosenberg, M.S., Scribner, K.T., Spear, S. (2010) Considering spatial and temporal scale in landscape-genetic studies of gene flow. Molecular Ecology, 19(17):3565-3575
  33. Epperson, B.K., McRae, B.H., Scribner, K., Cushman, S.A., Rosenberg, M.S., Fortin, M.-J., James, P.M.A., Murphy, M., Manel, S., Legendre, P. et al. (2010) Utility of computer simulations in landscape genetics. Molecular Ecology, 19(17):3549-3564
  34. Rayfield, B., James, P.M.A., Fall, A., Fortin, M.-J. (2008) Comparing static versus dynamic protected areas in the Québec boreal forest. Biological Conservation, 141(2):438-449
  35. James, P.M.A., Fortin, M.-J., Fall, A., Kneeshaw, D.D., Messier, C. (2007) The effects of spatial legacies following shifting management practices and fire on boreal forest age structure. Ecosystems, 10(8):1261-1277
  36. James, P.M.A., Rayfield, B., Fortin, M.-J., Fall, A., Farley, G. (2005) Reserve network design combining spatial graph theory and species' spatial requirements. Geomatica, 59(3):323-333

Articles publiés dans des actes de colloque (proceedings)

Rapports scientifiques, manuels et autres

  1. Tittler, R., James, P.M.A., Filotas, E. (2016) Faciliter l'intégration des principes d'aménagement multiservice des programmes de certification. Technical report, Resolute Forest Products
  2. Craven D., Angers, V.-A., Filotas, E., Tittler, R., Desrochers, M., James, P.M.A., Messier, C. (2013) L'aménagement écosystémique de forêts privées du Centre-du-Québec dans le contexte des changements globaux. Technical report, Agence Forestière des Bois-Francs

Thèses, mémoires et essais

  1. James, P.M.A. (2009) Interacting disturbances in the boreal forest and the importance of spatial legacies at multiple scales. Thèse de doctorat, University of Toronto

Thèses, mémoires et essais supervisés

Articles non révisés par un comité de lecture

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