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Patrick Hiesl

Assistant Professor of Forest Operations
Forestry and Environmental Conservation Department

Office: 230 Lehotsky Hall
Phone: 864-656-7293


 Educational Background

Ph.D. Forest Resources
University of Maine 2015

M.S. Forest Resources
University of Maine 2013

B.S. Forest Management
University of Applied Forest Sciences Rottenburg, Germany 2010

 Courses Taught

FOR 2520 - Forest Operations(Summer Camp)
FOR 2540 - Forest Products (Summer Camp)
FOR 3410 - Wood Procurement Practices in the Forest Industry
FOR 4100/6100 - Harvesting Methods
FNR 4700 - Creative Inquiry: Ice Storm Damage in South Carolina
FNR 4700 - Creative Inquiry: Soil Stabilization on Forest Roads
FOR 4930/7070 - Natural Resources Management in Germany and Switzerland (Summer 2017)
FOR 8930 - Statistical Methods in Natural Resources


During my career I worked in the forests of different parts of the world. As a native of Germany I have seen very extensive forest management in Europe. During my undergraduate studies I spent close to 12 months working in the boreal forest of northern Alberta, Canada, where I worked with private landowners on woodlot inventories and management plans. I have planted avocado trees on several acres in New Zealand, and my latest adventures took me to graduate school in Maine, where I worked with large industrial landowners.

Being at Clemson University is very exciting and I am looking forward to working with the forest industry in collaborative research projects to advance the knowledge of forest operations in the great state of South Carolina.

I am a member of the Society of American Foresters and the Council on Forest Engineering. Both are professional organizations that provide important services to forestry professionals but also to our undergraduate and graduate students.

 Research Interests

My research interested are in forest operations with an emphasis on harvesting costs and productivity, but also on the impact of logging operations on the environment. Currently my research at Clemson University leads me into the field of freshwater ecology to evaluate fish habitat fragmentation by stream crossings.


Hiesl, P., Crandall, M.S., Weiskittel, A., Benjamin, J.G. and Wagner, R.G. 2017. Evaluating the long-term influence of alternative commercial thinning regimes and harvesting systems on projected net present value of precommercially thinned spruce-fir stands in northern Maine. Canadian Journal of Forest Research, 47: 203-214.

Harris, A.B. and Hiesl, P. 2016. Ask Twice, Cut Once. Forest Landowner, 75(3): 28-35.

Boyd, M., Rippon, G., Herndon, J., Deason, J., and Hiesl, P. 2016. Evaluation of Management Alternatives Following Ice Storms. Poster presented at the Focus on Creative Inquiry Poster Forum. Clemson, SC, USA: April 6, 2016.

Hiesl, P. and Benjamin, J.G. 2015. Can technology help improve grapple skidder and stroke delimber interactions? A simulation approach. International Journal of Forest Engineering, 26 (3): 171-184.

Hiesl, P., Waring, T. and Benjamin, J.G. 2015. The effect of hardwood component on grapple skidder and stroke delimber idle time and productivity – An agent based model. Computers and Electronics in Agriculture, 118: 270-280.

Hiesl, P. and Benjamin, J.G. 2015. Estimating processing times of harvesters in thinning operations in Maine. Forest Products Journal, 65 (3/4): 180-186.

Hiesl, P., Benjamin, J.G. and Roth, B.E. 2015. Evaluating Harvest Costs and Profit of Commercial Thinnings in Softwood Stands in West-Central Maine: A Case Study. The Forestry Chronicle, 91 (2): 150-160.

Hiesl, P. and Benjamin, J.G. 2013. Applicability of International Harvesting Equipment Productivity Studies in Maine, USA: A Literature Review. Forests, 4(4): 898-921. DOI: 10.3390/f4040898

Hiesl, P. and Benjamin, J.G. 2013. A multi-stem feller-buncher cycle-time model for partial harvest of small-diameter wood stands. International Journal of Forest Engineering, 24 (2): 101-108. DOI: 10.1080/14942119.2013.841626.


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