Timothy G. Gregoire

J. P. Weyerhaeuser, Jr., Professor of Forest Management

 
Publications (BETA)

This is a PARTIAL listing of recent publications, and it will continue to grow as we populate our publications database.

2014

  • Journal Article
     
    Goodale, U.M., G.P. Beryln, T.G. Gregoire, K.U. Tennakoon, and M.S. Ashton. “Differences in Survival and Growth Among Tropical Rain Forest Pioneer Tree Seedlings in Relation to Canopy Openness and Herbivory.” Biotropica 46.2 (2014): 183-193. DOI: 10.1111/btp.12088
  • 2013

  • Journal Article
     
    Bollandsas, O.M., Gregoire, T. G., Næsset, E., Bernt-Håvard Øyen. “Detection of biomass change in a Norwegian mountain forest area using small footprint airborne laser scanner data.” Statistical Methods and Applications 22.1 (2013): 113-129. DOI: 10.1007/s10260-012- 0220-5
  • Journal Article
     
    Browning, M.H.E.M.; Marion J.L.; Gregoire, T.G. “Sustainability connecting children with nature – An exploratory study of nature play area visitor impacts and their management.” Landscape and Urban Planning 119 (2013): 104-114. DOI: 10.1016/j.landurbplan.2013.07.004
  • Journal Article
     
    Naesset, Erik, Terje Gobakken, Ole Martin Bollandsås, Timothy G. Gregoire, Ross Nelson, Göran Ståhl. “Comparison of precision of biomass estimates in regional field sample surveys and airborne LiDAR-assisted surveys in Hedmark County, Norway.” Remote Sensing of Environment 130 (2013): 108-120. DOI: 10.1016/j.rse.2012.11.010
  • Journal Article
     
    Ene, L., Næsset, E., Gobakken, T., Gregoire, T. G., Ståhl, G. and Nelson, R. “A simulation approach for accuracy assessment of two-phase post-stratified estimation in large-area LiDAR biomass surveys.” Remote Sensing of Environment 133 (2013): 210-224. DOI: 10.1016/j.rse.2013.02.002
  • Journal Article
     
    Næsset, E., Bollandsås, O. M, Gobakken, T. Gregoire, T. G., Ståhl, G. “Model-assisted estimation of change in forest biomass over an 11 year period in a sample survey supported by airborne LiDAR: A case study with poststratification to provide “activity data”.” Remote Sensing of Environment 128 (2013): 299-314. DOI: 10.1016/j.rse.2012.10.008
  • Journal Article
     
    Browning, H. E. M., Marion, J. L., Gregoire, T. G. “Sustainably connecting children with nature: an exploratory study of nature play area visitor impacts and their management (in press)..” Landscape and Urban Planning (2013).
  • 2012

  • Journal Article
     
    Ene LT, Naesset E, Gobakken T, Gregoire TG, Stahl G, Nelson R. “Assessing the accuracy of regional LIDAR-based biomass estimation using a simulation approach.” Remote Sensing of Environment 123 (2012): 579-592. DOI: 10.1016/j.rse.2012.04.017
  • Journal Article
     
    Goodale UM, Ashton MS, Berlyn GP, Gregoire TG, Singhakumara BMP and Tennakoon KU. “Disturbance and tropical pioneer species: Patterns of association across life history stages.” Forest Ecology and Management 266 (2012): 54-66. DOI: 10.1016/j.foreco.2012.04.020
  • Journal Article
     
    Gobakken T, Naesset E, Nelson R, Bollandsas OM, Gregoire TG, Stahl G, Holm S, Orka HO, Astrup R. “Estimating biomass in Hedmark County, Norway using national forest inventory field plots and airborne laser scanning.” Remote Sensing of Environment 123 (2012): 443-456. DOI: 10.1016/j.rse.2012.01.025
  • Journal Article
     
    Nelson R, Gobakken T, Naesset E, Gregoire TG, Stahl G, Holm S, Flewelling J. Lidar. “Lidar sampling –Using an airborne profiler to estimate forest biomass in Hedmark County, Norway.” Remote Sensing of Environment 123 (2012): 563-578. DOI: 10.1016/j.rse.2011.10.036
  • Journal Article
     
    Fehrmann, L, Gregoire, T. G., Kleinn, C. “Triangulation Based Inclusion Probabilities: A design-unbiased sampling approach.” Environmental and Ecological Statistics 19 (2012): 107-123. DOI: 10.1007/s10651-011-0177-9
  • 2011

  • Journal Article
     
    Næsset, E., Gobakken, T.,Solberg, S., Gregoire, T. G., Nelson, R., Ståhl, G., Weydahl, D. “Model-assisted regional forest biomass estimation using LiDAR and InSAR as auxiliary data: A case study from a boreal forest area.” Remote Sensing of Environment 115 (2011): 3599-3614. DOI: 10.1016/j.rse.2011.08.021
  • Journal Article
     
    Gregoire, T. G. & Li, Z. “An empirical evaluation of the accuracy of the Hartley and Rao (1962) variance approximation following systematic pps sampling.” Pakistan Journal of Statistics 27.4 (2011): 555-566.
  • Journal Article
     
    van Breugel, M., Hall, J.S., Craven, D.J., Gregoire, T.G., Park, A., Dent, D.H., Wishnie, M.H., Mariscal, E., Deago, J., Ibarra, D., Cedeño, N., Ashton, M.S. “Early growth and survival of 49 tropical tree species across four sites differing in soil fertility and rainfall.” Forest Ecology and Management 261.10 (2011): 1580-1589. DOI: 10.1016/j.foreco.2010.08.019
  • Journal Article
     
    Gregoire, Timothy G., Goran Stahl, Erik Naesset, Terje Gobakken, Ross Nelson, and Soren Holm.. “Model-assisted Estimation of Biomass in a LiDAR Sample Survey in Hedmark County, Norway..” Canadian Journal of Forest Research. 41.1 (2011): 83-95. DOI: 10.1139/X10-195
  • Journal Article
     
    Stahl, Goran, Soren Holm, Timothy G. Gregoire, Terje Gobakken, Erik Naesset, and Ross Nelson.. “Model-based Inference for Biomass Estimation in a LiDAR Sample Survey in Hedmark County, Norway..” Canadian Journal of Forest Research. 41.1 (2011): 96-107. DOI: 10.1139/X10-161
  • 2010

  • Journal Article
     
    Salas, C., Ene, L., Gregoire, T. G., Næsset, E., Gobakken, T. “Modelling tree diameter from airborne laser scanning derived variables: a comparison of spatial statistical models.” Remote Sensing of Environment 114.6 (2010): 1277-1285. DOI: 10.1016/j.rse.2010.01.020,
  • Book
     
    Pant, Pallavi, Prateek Sharma, Suresh Jain & Timothy G. Gregoire.. Analysis of REDD for India: Opportunities and Challenges.. VDM Verlag R. Muller, 2010.
  • Journal Article
     
    van Breugel, M., Hall, J. S., Craven, D., Gregoire, T. G., Park, A., Dent, D. H., Wishnie, M., Mariscal, E., Deago, J., Ibarra, D., Cedeño, N., & Ashton, M. A. “Early growth and survival of 49 tropical tree species across sites differing in soil fertility and rainfall in Panama.” Forest Ecology and Management 261.10 (2010): 1580-1589. DOI: 10.1016/ j.foreco.2010.08.019
  • Journal Article
     
    Salas, Christian, Liviu Ene, Timothy G. Gregoire, Erik Naesset, and Terje Gobakken.. “Modelling Tree Diameter from Airborne Laser Scanning Derived Variables: A Comparison of Spatial Statistical Models..” Remote Sensing of the Environment. 114.6 (2010): 1277-1285. DOI: 10.1016/j.rse.2010.01.020
  • Journal Article
     
    Salas, Christian and Timothy G. Gregoire.. “Statistical Analysis of Ratio Estimators and Their Estimators of Variances When the Auxiliary Variate Is Measured with Error..” European Journal of Forest Research. 129.5 (2010): 847-861. DOI: 10.1007/s10342-009-0277-3
  • 2009

  • Book Chapter
     
    KRW, Brewer and Gregoire, Timothy G.. “Introduction to Survey Sampling.” Handbook of Statisticcs.(Vol 29A). Ed. Danny Pfeffermann and C.R. Rao 2009.
  • Journal Article
     
    Gregoire, Timothy G.; Salas, Christian. “Ratio Estimation with Measurement Error in the Auxiliary Variate.” Biometrics 65.2 (2009): 590-598. DOI: 10.1111/j.1541-0420.2008.01110.x
  • Journal Article
     
    Valentine, H.T., Affleck, D.L.R., and Gregoire, T.. “Systematic sampling of discrete and continuous populations: sample selection and the choice of estimator.” Canadian Journal of Forest Research (2009). DOI: 10.1139/X09-019
  • Journal Article
     
    Goodale, Uromi M., Berlyn, Graeme P., Gregoire, Timothy G., Ashton, Mark S.. “Ecological Significance of Crown Functional Traits Across Size Classes and Disturbance Environments in Eight Pioneer Species in a Sri Lankan Rain Forest.” Journal of Sustainable Forestry 28.1-2 (2009): 22 - 47. DOI: 10.1080/10549810802626126
  • Journal Article
     
    Nelson, Ross; Boudreau, Jonathan; Gregoire, Timothy G.; Margolis, Hank; Næsset, Erik; Gobakken, Terje and Ståhl, Göran. “Estimating Quebec Provincial Forest Resources Using ICESat/GLAS.” Canadian Journal of Forest Research 39.4 (2009): 862-881.
  • Book Chapter
     
    Brewer, K. R. W. and T. G. Gregoire. “Introduction to survey sampling. IN: HANDBOOK OF STATISTICS – VOL 29A. Sample Surveys: Design, Methods and Applications.” 1 Edition, Ed. D. Pfeffermann and C. R. Rao Elsevier B. V, 2009.
  • 2008

  • Journal Article
     
    Gregoire, T. G., Lin, Q-F, Boudreau, J, & Nelson, R. “Regression estimation following the square root transformation of the response.” Forest Science 54.6 (2008): 597-606.
  • Journal Article
     
    Mehtätalo, L., Gregoire, T., Burkhart, H.. “Comparing Strategies for Modeling Tree Diameter Percentiles from Remeasured Plots.” Environmetrics 19.5 (2008): 529-548. DOI: 10.1002/env.896
  • Book
     
    Valentine, H. T., Gove, J. H., Ducey, M. J., Gregoire, T. G. and Williams, M. S. Estimating the Carbon in Coarse Woody Debris with Perpendicular Distance Sampling. IN: Field Measurements for Forest Carbon Monitoring: A Landscape-scale Approach. Ed. C. M. Hoover Springer, 2008.
  • Journal Article
     
    Nelson, R.F, Naesset, E.,Gobakken, T., Stahl, G. and Gregoire, T. G. “Regional Forest Inventory Using an Airborne Profiling LiDAR.” Japanese Journal of Forest Planning 13 (2008): 287-294.
  • Book
     
    Gregoire, T. G. and H. T. Valentine. Sampling Strategies for Natural Resources and Environment. Chapman-Hall/CRC, 2008.
  • 2007

  • Journal Article
     
    Evans, A.M., Gregoire, T.G. “A geographically variable model of hemlock woolly adelgid spread.” Biol Invasions 9.4 (2007): 369-382. DOI: 10.1007/s10530-006-9039-z
  • Journal Article
     
    Evans, A. M. and Gregoire, T. G. “The tree crown distribution of hemlock woolly adelgid, Adelges tsugae (Homoptera:Adelgidae) from randomized branch sampling.” Journal of Applied Entomology 131.1 (2007): 26-33. DOI: 10.1111/j.1439-0418.2006.01121.x