John Klepac
General Engineer
521 Devall Drive
Auburn, AL 36849-5418
Phone: 334-826-8700 x160Auburn, AL 36849-5418
Fax: 334-821-0037
john.klepac@usda.gov
Featured Publications and Products
- Klepac, J.; Rummer, B. 2010. Harvesting understory biomass with a baler.
- Klepac, J.; Rummer, B. 2009. Evaluation of the WB55 bio-baler for baling woody biomass in a forest application.
- Mitchell, Dana; Klepac, John. 2008. Processing woody biomass with a modified horizontal grinder.
- Klepac, John; Rummer, Robert B.; Hanula, James L.; Horn, Scott. 2007. Mechanical removal of Chinese privet.
- Klepac, John; Rummer, Bob; Thompson, Jason. 2006. Evaluation of a cut-to-length system implementing fuel reduction treatments on the Coconino National Forest in Arizona.
Publications
- Grace III , J. McFero; Klepac, J. F.; Taylor, Steve E. 2019. Evaluating forest biomass recovery in south central Alabama pine plantations.
- Thompson, Jason D.; Mitchell, Dana ; Klepac, John . 2018. Evaluating in-woods truck scales.
- Klepac, John ; Mitchell, Dana . 2018. Evaluation of a conventional harvesting system for a hardwood restoration project on the George Washington and Jefferson National Forests.
- Thompson, Jason D.; Mitchell, Dana; Klepac, John. 2017. Alternative trailer configurations for maximizing payloads.
- Mitchell, Dana; Klepac, John. 2017. Biomass removal study on the George Washington and Jefferson National Forests.
- Klepac, John; Mitchell, Dana. 2017. Evaluation of a tracked feller-buncher harvesting plantation loblolly pine.
- Klepac, J.; Mitchell, Dana. 2016. Comparison of four harvesting systems in a loblolly pine plantation.
- Grace III, Johnny; Klepac, John; Taylor, S.; Mitchell, Dana. 2016. Residue distribution and biomass recovery following biomass harvest of plantation pine.
- Thompson, Jason; Klepac, John; Mitchell, Dana. 2015. Loading productivity of untrimmed and trimmed pulpwood.
- Klepac, John; Mitchell, Dana; Thompson, Jason. 2015. Monitoring moisture content, temperature, and humidity in whole-tree pine chip piles.
- Parkhurst, Brian; Aust, Mike; Bolding, Chad; Barrett, Scott; Vinson, Andrew; Klepac, John; Carter, Emily. 2015. Soil response to skidder and dozer traffic as indicated by soil stress residuals.
- Klepac, John; Mitchell, Dana; and Thompson, Jason. 2014. The effect of pile size on moisture content of loblolly pine while field drying.
- Klepac, J. 2013. Performance of a Tracked Feller-Buncher with a Shear Head Operating in Small-Diameter Pine.
- Klepac, J.; Rummer, B. 2012. Off-road transport of pinyon/juniper.
- Rummer, Bob; Klepac, John; Thompson, Jason. 2012. Technology for biomass feedstock production in southern forests and GHG implications.
- Thompson, J. D.; Klepac, J.; and Sprinkle, W. 2012. Trucking Characteristics for an In-woods Biomass Chipping Operation.
- do Canto, J.L.; Klepac, John; Rummer, Robert; Savoie, P.; Seixas, F. 2011. Evaluation of two round baling systems for harvesting understory biomass.
- Klepac, John; Rummer, Robert; Thompson, Jason. 2011. Harvesting small trees for bio-energy.
- Rummer, Robert; Klepac, John. 2011. Thrown object hazards in forest operations.
- Sanchez, Felipe G.; Carter, Emily A.; Klepac, John F. 2003. Enhancing the soil organic matter pool through biomass incorporation.
- Rummer, Bob; Klepac, John. 2003. Evaluation of roll-off trailers in small-diameter applications.
- Klepac, John; Reutebuch, Steve. 2003. Soil disturbance assessment of a cable logging operation performing five silvicultural prescriptions.
- Rummer, Robert B.; Klepac, John; Archer, Harry; Hebner, Gerry. 2001. Improving stability of low-volume forest roads using a lignin-based emulsion.
- Hartsough, Bruce; Spinelli, Raffaele; Pottle, Steve; Klepac, John. 2000. Fiber Recovery with Chain Flail Delimbing/Debarking and Chipping of Hybrid Poplar.
- Klepac, John; Rummer, Robert B. 2000. Productivity and Cost Comparison of Two Different-Sized Skidders.
- Klepac, John; Reutebuch, Stephen E.; Rummer, Robert B. 1999. An Assessment of Soil Disturbance from Five Harvesting Intensities.
- Stokes, Bryce J.; Klepac, John F. 1997. Ecological Technologies for Small-Diameter Tree Harvesting.
- Rummer, Robert B.; Carter, Emily; Stokes, Bryce; Klepac, John. 1997. Strips, Clearcuts, And Deferment Cuts: Harvest Costs And Site Impacts For Alternative Prescriptions In Upland Hardwoods.
- Brinkcr, Richard W.; Klepac, John F.; Stokes, Bryce J.; Roberson, Joe D. 1996. Effect of tire size on skidder productivity.
- Brinker, Richard W.; Klepac, John F.; Stokes, Bryce J.; Roberson, Joe D. 1996. Effect of tire size on skidder productivity.
Research Highlights
- A Simple Technique to Improve Woody Biomass Quality (2014)
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The commercial markets for biofuels and bio-based products will require cost-competitive raw materials to compete with rival energy sources. The Forest Service continues to work on identifying ways to improve feedstock logistics. In 2014, Forest Service scientists examined a method to improve biomass quality using a simple drying technique.