Temesgen Hailemariam

Associate Professor in Forest Biometrics & Measurements

BSc, 1986, Alemaya University of Agriculture
MSc, 1992, Lakehead University
PhD, 1999, University of British Columbia

Email:

 

 
Research Interests:

Forest biometrics and measurements

Current Programs strive to:

develop imputation and sampling techniques to assess, monitor, and analyze forest resources; develop quantitative methods to characterize, quantify, and integrate tree/crown attributes and site productivity; and integrate airborne LiDAR and ground data to estimate status, change, and trends.

Graduate Students:  Donald Gagliasso (MS); Zane Haxton (MS); Jacob Strunk (PhD)

Research Associates: Greg Latta (MS); Bianca Eskelson (PhD); Jeremy Groom (PhD)

Courses:

FOR 321, Forest Mensuration (5)
FOR 524, Forest Biometrics (3)

Selected Publications:

  • Goerndt, M.E., V.J. Monleon, and H. Temesgen. (in press).  Relating forest attributes with area- and tree-based LiDAR metrics for western Oregon. Western Journal of Applied Forestry.

  • Latta, G., H. Temesgen, D.A. Adams, and T. Barrett. 2010. Analysis of potential impacts of climate change on forests of the United States Pacific Northwest. Forest Ecology and Management. 259: 720-729.

  • Eskelson, B.N.I., T.M. Barrett, and H. Temesgen. 2009. Imputing Mean Annual Change and Estimating Current Forest Attributes. Silva Fennica. 43:649-658.

  •  Eskelson, B.N.I, H. Temesgen, and T. Barrett. 2009. Estimating cavity tree and snag abundance using negative binomial regression models and nearest neighbor imputation methods. Can. J. For. Res. 38: 553-565.

  • Latta, G., Temesgen, H., and T. Barrett. 2009. Mapping and imputing potential productivity of Pacific Northwest Forests using climate variables. Can. J. For. Res. 39: 1197-1207.   

  • Eskelson, B.N.I, H. Temesgen, V. LeMay, T. Barrett,  A. Hudak, and N. Crookston. 2009. The roles of nearest neighbor methods in imputing missing data in forest inventory and monitoring databases. Scand. J. For. Res. 24:193-205.

  • Garber, S.M., Temesgen, H., V.J. Monleon, and D.W. Hann. 2009.  Effects of height imputation strategies on stand volume estimation. Can. J. For. Res. 39: 694-703.

  • Eskelson, B.N.I, H. Temesgen, and T. Barrett.  2009. Estimating current forest attributes from paneled inventory data using plot-level imputation: a study from the Pacific Northwest. For. Sci. 55 (1): 64-71.

  • Weiskittel, A. R., P.J. Gould, and H. Temesgen. 2009. Sources of variation in the self-thinning boundary line for three ecologically-distinct species. For. Sci. 55 (1): 84-93.

  • Temesgen, H., T. Barrett, and G. Latta. 2008.  Estimating Cavity Tree Abundance Using Nearest Neighbor Imputation Methods for western Oregon and Washington Forests.  Silva Fennica. 42(3): 337-354.

  • Eskelson, B.N.I, H. Temesgen, and T.M. Barrett.  2008. Comparison of Stratified and Non-stratified Most Similar Neighbour Approaches for Estimating Stand Tables. Forestry: Int. J. For. Res. 81: 125-134.

  • Temesgen, H., V.J. Monleon, and D.W. Hann.  2008. Analysis of nonlinear tree height prediction strategies for Douglas-fir Forests. Can. J. For. Res. 38: 553-565.

  • Younger, N., H. Temesgen, and S. Garber. 2008. Taper and volume responses to sulfur treatment in coastal Oregon Douglas fir stands. West. J. Appl. For.  23(3): 142-148.

  • Weiskittel, A.R, H. Temesgen, D.S. Wilson, and D. A. Maguire.  2008. Sources of within- and between-stand variability in specific leaf area of three ecologically distinct conifer species.  Annals of Forest Sciences 65, 103-113. 

  • Temesgen, H., M.E. Goerndt, G. P. Johnson, D.M. Adams, and R.A. Monserud. 2007. Forest measurement and biometrics in forest management: status and future needs of the Pacific Northwest USA. Journal of Forestry. 105: 233-238.

  • Temesgen, H., D.W. Hann, and V.J. Monleon. 2007. Regional height-diameter equations for major tree species of southwest Oregon. West. J. Appl. For.  22(3): 213-219.

  • Temesgen, H, P.J. Martin, D.A. Maguire, J.C. Tappeiner. 2006. Quantifying effects of different levels of dispersed canopy tree retention on stocking and yield of the regeneration cohort. For. Ecol. & Manage.  235: 44-53.

  • Temesgen, H. and A.R. Weiskittel. 2006. Leaf mass per area relationships across light gradients in hybrid spruce crowns. Trees: Structure & Function.  20: 522-530.   

  • Temesgen, H., T. Barrett, and G. Latta. 2005. Cavity Tree Abundance and Stand Characteristics in Western Oregon Forests: Relationships and predictions. International Forestry Review 7(5): 35.

  • Temesgen, H. and S.J. Mitchell. 2005.  An individual tree mortality model for South-eastern British Columbia.  West. J. Appl. For.  20(2): 101-109.

  • LeMay, V. and H. Temesgen. 2005. Connecting inventory information sources for landscape level analyses.   J. Forest Biometry, Modeling and Information Sciences.1: 37-49.

  • LeMay, V.  and Temesgen, H.  2005.  Comparison of nearest neighbor methods for estimating basal area and stems per ha using aerial auxiliary variables.  For. Sci. 51 (2): 109-119.

  • Temesgen, H., V.M. LeMay, and S. J. Mitchell. 2005. Tree crown ratio models for multi-species and multi-layered stands.  For. Chron. 81(1): 133-141.

  • Céline Boisvenue. H. Temesgen, and P.L. Marshall. 2004. Selecting a small tree height growth model for mixed-species stands in the Southern Interior of British Columbia, Canada. For. Ecol. & Manage. 177: 301-312.

  • Temesgen, H. and K. v. Gadow. 2004. Generalized height-diameter models for major tree species in complex stands of interior British Columbia, Canada. Europ. J. For. Res. 123(1): 45-51.

  • Badre, T. H., P.L. Marshall, V.M. LeMay, Temesgen, H., and Zumrawi. 2004. Regeneration imputation models for complex stands of southeastern British Columbia. For. Chron. 80(2): 271-278.

  • Temesgen, H., V. LeMay, and I.R. Cameron. 2003. Bivariate distribution functions for predicting twig leaf area within hybrid spruce crowns. Can. J. For. Res. 33: 2044-2051.

  • Temesgen, H. 2003. Estimating tree-lists from aerial information: a comparison of a parametric and most similar neighbor approaches. Scand. J. For. Res. 18:279-288.

  • Temesgen, H. 2003. Evaluation of sampling alternatives to quantify tree leaf area. Can. J. For. Res. 33: 82-95.

  • Temesgen, H., V.M. LeMay, P.L. Marshall, and K. Froese. 2003. Imputing tree-lists from aerial attributes for complex stands of British Columbia. For. Ecol. & Manage. 177: 277-285.

  • Temesgen, H. 2003. Distance sampling for estimating size and density of wildlife trees in dispersed shelterwood system: A numerical example. Report submitted to Riverside Forest Products Ltd. 10 pp.

  • Rowan, C.A., S.J. Mitchell and H. Temesgen. 2003. Effectiveness of wind firming treatments in Coastal British Columbia. Forestry. 76: 55-65.

  • Mitchell, S.J., H. Temesgen and Y.P. Kulis. 2001. Empirical modelling of cutblock edge windthrow risk on Vancouver Island, Canada, using stand level information. For. Ecol. & Manage. 154: 117-130.

  • Temesgen, H. 2000. Analysis of permanent sample plot data for differences in geographic locations and climatic amplitudes within selected zones. Internal report for the BC Ministry of Forests, Resources Inventory Branch. Victoria, BC. 12 pp.

  • Howard, A.F. and H. Temesgen. 1997. Potential financial returns from alternative silvicultural prescriptions in second-growth stands of coastal British Columbia. Can. J. For. Res. 27:1483-1495.

Selected Presentations:

  • LeMay, V., I. Moss, and H. Temesgen. 2010. Using Inventory and Forecast Models for Land Use Planning, Including Timber Volume, Climate Changes, Biomass, Carbon, and Habitat. Presented at the Science to Management Forum, March 2, Vancouver, Canada.

  • Temesgen, H., V.J. Monleon, A. R. Weiskittel, and D.S. Wilson. 2009. A Tale of Two Phases: Design and Estimation of Tree Foliage Biomass. Presented at the “20th Annual The International Environmetrics Society Conference”, July 5-9, University of Bologna, Italy.

  • Eskelson, B.N.I., H. Temesgen, and T.M. Barrett. 2009. Estimating cavity tree and snag abundance using negative binomial regression models and nearest neighbor imputation methods. Department of Statistics Seminar, April 27, Corvallis, Oregon.

  • Temesgen, H., G. Latta, T.M. Barrett, and B.N.I Eskelson. 2009. Analysis of nearest neighbor methods for imputing missing potential productivity data. Presented at the 2009 Western Mensurationists Meeting. June 21-22. Vancouver, WA.

  • Temesgen, H. 2009. Science Delivery and Application: Portfolio # 4. Presented at the USDA Forest Inventory and Analysis panel review. June 24. Bonneville, WA.

  • Latta, G., D.M. Adams, Temesgen, H., and T. Barrett.  2008. Potential forest sector impacts of climate change on forests of the United States pacific northwest Douglas-fir forests. Forest sector modeling - state-of-the-art and future challenges in an expanding global marketplace.  November 17-20. Seattle. WA. 

  • Drake, T.P. and Temesgen, H. 2008. Empirical modeling of windthrow occurrence on streamside corridors using stream configuration and stand level information. Presented at the 2008 FIA symposium, Park City, Utah.

  • Latta, G., Temesgen, H., and Tara Barrett. 2008. Imputing potential productivity of Pacific Northwest Forests using climate variables. Presented at the 2008 FIA symposium, Park City, Utah.

  • Eskelson, B.N.I, Temesgen, H. and T. Barrett. 2008. Estimating status of forest attributes from paneled inventory data using nearest neighbor imputation approaches in the Pacific Northwest. Presented at the 2008 FIA symposium, Park City, Utah. 

  • Latta, G., Temesgen, H., D.M. Adams, and Tara Barrett.  2008. Potential forest productivity impacts of climate change on forests of the United States Pacific Northwest. Conference on "Adaptation of Forests and Forest Management to Climate Change with Emphasis on Forest Health – Review of Science, Policies, and Practices” August 25-28, Umeå, Sweden.

  • Temesgen, H., A. R. Weiskittel and D.S. Wilson. 2008. Efficiency of some sampling alternatives to estimate tree- and stand-level foliage biomass. Presented at the 19th Annual TIES Conference at The University of British Columbia Okanagan, June 8-13, Kelowna, BC, Canada.

  • Eskelson, B.N.I, H. Temesgen, and T. Barrett. 2008. Estimating status of forest attributes from paneled inventory data using nearest neighbor imputation approaches. Presented at the 19th Annual TIES Conference at The University of British Columbia Okanagan, June 8-13, Kelowna, BC, Canada.

Selected theses:

  • Goerndt, Michael. 2010. Comparison and Analysis of Small Area Estimation Methods for Improving Estimates of Selected Forest Attributes. PhD dissertation. Oregon State University. 137 pp.

  • Marquardt, Theresa. 2010. Accuracy and Suitability of Several Stand Sampling Methods in Riparian Zones. MS thesis. Oregon State University. 77 pp.

  • Eskelson, Bianca. 2008. Examination of Imputation Methods to estimate Status and Change of Forest Attributes from Paneled Inventory Data. PhD dissertation. Oregon State University. 140 pp.

  • Drake, Timothy. 2008. Empirical modeling of windthrow occurrence in streamside corridors. MS thesis. Oregon State University. 92 pp.

  • Younger, Nicole. 2007. Taper, Crown, and Volume Responses of a Coastal Oregon Douglas-fir Stand to Sulfur Treatments for Control of Swiss Needle Cast. MS thesis. Oregon State University. 89 pp.