Sessions, John

University Distinguished Professor
Strachan Chair of Forest Operations Management

Office Location: 
Snell 205
Email Address: 
Curriculum Vitae: 

Registered Professional Civil Engineer: Washington

Ph.D., Forest Management, 1979 Oregon State University
M.S., Forest Engineering, 1971 University of Washington
M.S., Civil Engineering, 1968 California State University
B.S., Civil Engineering, 1966 University of California, Los Angeles

Current Programs: 

Developing techniques for transportation planning, tactical forest planning, strategic forest planning, decision support systems for road management, biomass collection and transport.

Graduate Students: Michael Berry (Grad 2017), Joshua Petitmermet (Grad 2018), Bryent Daugherty (Grad 2017)


    FE/FOR 456: International Forestry (team taught)
    FE 470/570: Logging Mechanics
    FE 552: Forest Transportation
    FE 640: Combinatorial Optimization in Forest Planning
    FE/FOR 457/557: Techniques for Forest Resource Analysis

During Academic Year 2017-2018:

Summer Term 2017 – Projects

  •     Biomass Production and Transport Planning
  •     Steep Slope Logging Vehicle Performance
Fall Term 2017
    FE/FOR 457/557: Techniques for Forest Resource Analysis
Winter Term 2018
    FE 470/570: Logging Mechanics
    FE 640-001: Combinatorial Optimization
    FE/FOR 457/557: Techniques for Forest Resource Analysis 


Spring Term 2018   
    FE/FOR 456: International Forestry
    FE 552: Transportation Planning

Recent Publications: 

Sessions, J. and K. Lyons. 2018. Harvesting elevation potential from mountain forests. Published on line Oct. 1, 2018.  International J. of Forest Engineering. https://www.tandfonline.com/eprint/vDYX7eDrjZe9dyJ8Y2AZ/full

Belart, F., J. Sessions, and G. Murphy. 2018.  Seasonal changes in live branch moisture content of three forest species in the Pacific Northwest, USA.  Forest Science.  Available on line, August 29, 2018 at https://doi.org/10.1093/forsci/fxy038.

Campbell, J., J. Sessions, D. Smith, and K. Trippe. 2018. Potential carbon storage in biochar made from logging residue: basic principles and southern Oregon case studies. Published  Sep13, 2018. PLoS ONE 13(9): e0203475. https://doi.org/10.1371/journal.pone.0203475

Daugherty, B., J. Sessions, R. Zamora-Cristales, and M. Wing. 2018. Improving Large Trailer Access for Biomass Recovery in Steep Terrain.  Forest Science 64(4):429-441.  Available on line April 4, 2018.  https://doi.org/10.1093/forsci/fxx020

Zamora, R, K. Boston, J. Long, and J. Sessions. 2018. Economic Estimation of the Available Biomass Following Logging Operations in Western Oregon and Washington. In press. Forest Products J. Available on line March 2, 2018 at http://www.forestprodjournals.org/doi/pdf/10.13073/FPJ-D-17-00045

Han, H.-S., A. Jacobson, E.M. Bilek, and J. Sessions. 2018.  Waste to Wisdom: Utilizing forest residues for the production of bioenergy and biobased products.  Applied Engineering in Agriculture 34(1):1-7.

Berry, M. and J. Sessions. 2018. The Economics of Biomass Logistics and Conversion Facility Mobility: An Oregon Case Study.  Applied Engineering in Agriculture 34(1):57-72.

Berry, M. and J. Sessions. 2018. A Forest-to-Product Biomass Supply Chain in the Pacific Northwest, USA: A multi-product approach.  Applied Engineering in Agriculture 34(1):109-124. Available on Line at doi: 10.13031/aea.12384.

Berry, M. , J. Sessions and R. Zamora-Cristales. 2018. Sub-regional comparison for forest-to-product biomass supply chains on the Pacific West Coast, USA.  Applied Engineering in Agriculture 34(1):157-174.

Belart, F., J. Sessions, B. Leshchinsky, and G. Murphy. 2017. Economic implications of moisture content and logging system in forest harvest residue delivery for energy production: a case study.  Canadian J. of For. Res. 47(4): 458-466, https://doi.org/10.1139/cjfr-2016-0428.

Mirkouei, A., K. Haapala, J. Sessions, and G. Murthy. 2017. A Review and Future Directions in Techno-Economic Modeling and Optimization of Upstream Forest Biomass to Bio-oil Supply Chains.   Renewable and Sustainable Energy Reviews 67(2017)15–35.

Sessions, J., B. Leshchinsky, W. Chung, K. Boston, and J. Wimer. 2017. Theoretical Stability and Traction of Steep Slope Tethered Feller-Bunchers. Forest Science 63(2):192-200

Chen, C., F. Pierobon, R. Zamora, I. Ganguly, J. Sessions, and I. Eastin.  2017.   Modeling the processing and transportation logistics of forest residues using life cycle assessment.   Journal of Forestry 115(2)86-94.

Belart, F., B. Leshchinsky, and J. Sessions. 2017. Finite element analysis to predict in-forest stored harvest residue moisture content.  In press.  Forest Science. doi: http://dx.doi.org/10.5849/FS-2016-064R1

Ghaffariyan, M. R., M. Brown, M. Acuna, J. Sessions, T. Gallagher, M. Kühmaier, R. Spinelli, R. Visser, G.  Devlin, L.Eliasson, J. Laitila, R. Laina, M. Wide, and G. Engell.  2017. An international review of the most productive and cost effective biomass recovery technologies and supply chains.   J. of Renewable Energy Reviews 74(2017) 145-158. http://dx.doi.org/10.1016/j.rser.2017.02.014

Sessions, J., J. Gordon, P. Rigdon, D. Motanic, and V. Corrao. 2017. Indian Forests and Forestry:  Can they play a larger role in Sustainable Forest Management? In press. Journal of Forestry.doi: https://doi.org/10.5849/jof.2016-083R1

Mirkouei, A. K.R. Haapala, G.S. Murthy, and J. Sessions. 2016. Reducing Greenhouse Gas Emissions For Sustainable Bio-Oil Production Using A Mixed Supply Chain.  Proceedings of the 2016 ASME IDETC/CIE: 21st Design for Manufacturing and the Life Cycle Conference (DFMLC), Paper DETC2015-59262, August 21-25, Charlotte, North Carolina. 

Marrs, G., R. Zamora and J. Sessions.  2016. Optimizing the Feedstock Value Chain for Bio-Jet Fuel from Pacific Northwest Softwood Harvest Residues.  In press.  J. of Renewable Energy. 99 (2016): 1082-1091

Zamora-Cristales, R. and J. Sessions.  2016.  A collection model for forest biomass residues. Croatian J. of Forest Engineering 3(2):287-296.

Mirkouei, A., K.R. Haapala, G.S. Murthy, and J. Sessions. 2016.  Evolutionary Optimization of Bioenergy Supply Chain Cost with Uncertain Forest Biomass Quality and Availability.   Proceedings of the IIE/ISERC, May 21-24, Anaheim, California.

Wing, M.G., J. Burnett, J. Brungardt, D. Dobler, V. Cordell, and J. Sessions.  2016. Search and Rescue Operations with an Unmanned Helicopter. International Journal of Remote Sensing Applications, 2016, 6(0), 65-75. doi: 10.14355/ijrsa.2016.06.007.

Mirkouei, A., P. Mirzaie, K. Haapala, J. Sessions and G. Murthy. 2016. Reducing the Cost and Environmental Impact of Integrated Fixed and Mobile Bio-Oil Refinery Supply Chains.  J. of Cleaner Energy 113(2016):495-507.  On line at doi:10.1016/j.jclepro.2015.11023

Leshchinsky, B. J. Sessions, and J. Wimer. 2015. Analytical design charts for mobile anchor systems. In press. Int. J. of For. Engr. On line April 8, 2015. DOI: 10.1080/14942119.2015.1023014

Temesgen H., K. Poudel, A. Gray, D. Affleck, and J. Sessions. 2015. Challenges and Opportunities in Estimating Above Ground Forest Biomass. Scandinavian J. of For. Res. Online Jan 27, 2015, doi:10.1080/02827581.2015.1012114.

Leshchinsky. B. J. Sessions, J. Wimer and M. Clausen. 2015. Designing Mobile Anchors to Yield: A Tension Relief System for Tail Anchoring. Submitted to Croation J. of Forest Engineering.

Zhu, J.Y., M. Chandra, F. Gu, R. Gleisner, R. Reiner, J. Sessions, G; Marrs, J. Gao, and D. Anderson. 2015. Using sulfite chemistry for robust bioconversion of Douglas-fir forest residue to bioethanol at high titer and lignosulfonate: A pilot-scale evaluation. Bioresource Technology 179(2015):390-397.

Zamora, R., J. Sessions, D. Smith and G. Marrs. 2015. Effect of grinder configuration on forest biomass bulk density, particle size distribution and fuel consumption. Biomass and Bioenergy (81):44-54.

Lauer, C., J. McCaulou, J. Sessions, and S. Capalbo. 2015. Biomass Supply Curves for Western Juniper in Central Oregon, USA, Under Alternative Business Model and Policy Assumptions. In press. J. Forest Policy and Economics.

Simwanda, M., J. Sessions, K. Boston, and M. Wing. 2015. Modeling biomass transport on single lane forest roads. Forest Science (61):763-773.

Zamora, R. and J. Sessions. 2015. Economics and logistics of double trailers in transporting forest biomass on steep terrain. In press. California Agriculture Journal

Marrs, G., R. Zamora and J. Sessions. 2015. Optimizing the Feedstock Value Chain for Bio-Jet Fuel from Pacific Northwest Softwood Harvest Residues. Submitted to J. of Renewable Energy.

Recent Theses

Petitmermet, Joshua. 2018. Tethering and Biochar: Two Emergent Technologies with Implications for Fuels Treatments on Federal Forest Lands.  M.S. thesis, Oregon State University. 194 pp.

Berry, Michael. 2017. Evaluating Transportable Conversion Facilities for a Forest Biomass Supply Chain in the Pacific Northwest, USA.  PhD.  Oregon State University, 204 pp.

Belart, Francisca.  2016. Forest Harvest Residue Moisture Management in the Pacific Northwest, USA. PhD. Oregon State University, 196 pp.

Pavez, Ric. 2014.  An Optimization Model to Allocate Forestry Incentives Funds in Teak Plantations of the Southern-Coastal Region of Guatemala.  MS. Oregon State University. 189 pp.

Beck, Storm.  2014.  The Use Of LiDAR To Identify Forest Transportation Networks. MS. Oregon State University, 110 pp.

Zamora, Rene. 2013. Economic Optimization of Forest Biomass Processing and Treatment. PhD. Oregon State University, 196 pp.

Stander, Henk. 2011. Uncertainty, Risk Management on the Tillamook State Forest: A Case Study. PhD. Oregon State University, 346 pp.

Kokenge, Kyler. 2011. Opportunities and Challenges for Decision Support Systems in Log Truck Scheduling and Dispatching. MS. Oregon State University, 147 pp.

Schmidt, Christian. 2011. Spaitally-Explicit Prediction of Recoverable Harvesting Residues. MS. Oregon State University, 179 pp.

Simwanda, Matamyo. 2011. Modeling Biomass Transport on Single Lane Forest Roads and Monitoring GPS Accuracy for Vehicle Tracking Under Different Canopy Conditions. MS. Oregon State University, 153 pp.