Greg C. C. Liknes

Physical Scientist

Northern Research Station

gliknes@usda.gov

Publications & Products
Education

Treesearch Publications

Jill M. Derwin, Valerie A. Thomas, Randolph H. Wynne, Karen G. Schleeweis, John W. Coulston, S. Seth Peery, Kurt Luther, Greg C. C. Liknes, Stacie Bender, Susmita Sen. 2025. Factors influencing the consistency in crowdsourced interpretations of aerial photographs to measure tree canopy cover
Christopher W. W. Woodall, Greg C. C. Liknes, J. P. Bunker, C. P. Peace, J. M. Frank. 2023. Forgotten forest relics: Apple trees (Malus spp.) in eastern U.S. forests
Jonathan Knott, Greg C. C. Liknes, Courtney L. Giebink, Sungchan Oh, Grant M. Domke, Ronald E. McRoberts, Valquiria F. Quirino, Brian F. Walters. 2023. Effects of outliers on remote sensing‐assisted forest biomass estimation: A case study from the United States national forest inventory
Thomas Goff, Mark D. D. Nelson, Greg C. C. Liknes, Tivon E. Feeley, Scott A. Pugh, Randall Morin. 2021. Rapid Assessment of Tree Damage Resulting from a 2020 Windstorm in Iowa, USA
Andrew J. Lister, Hans Andersen, Tracey Frescino, Demetrios Gatziolis, Sean P. Healey, Linda S. Heath, Greg C. C. Liknes, Ronald McRoberts, Gretchen Moisen, Mark Nelson, Rachel Riemann, Karen G. Schleeweis, Todd A. Schroeder, Jim Westfall, Barry T. (Ty) Wilson. 2020. Use of Remote Sensing Data to Improve the Efficiency of National Forest Inventories: A Case Study from the United States National Forest Inventory
Jill M. Derwin, Valerie A. Thomas, Randolph H. Wynne, John W. Coulston, Greg C. C. Liknes, Stacie Bender, Christine E. Blinn, Evan B. Brooks, Bonnie Ruefenacht, Robert Benton, Mark V Finco, Kevin Megown. 2020. Estimating tree canopy cover using harmonic regression coefficients derived from multitemporal Landsat data
Ronald E. McRoberts, Erik Næsset, Greg C. C. Liknes, Qi Chen, Brian F. Walters, Sassan Saatchi, Martin Herold. 2019. Using a Finer Resolution Biomass Map to Assess the Accuracy of a Regional, Map-Based Estimate of Forest Biomass
Limin Yang, Suming Jin, Patrick Danielson, Collin Homer, Leila Gass, Stacie M. Bender, Adam Case, Catherine Costello, Jon Dewitz, Joyce Fry, Michelle Funk, Brian Granneman, Greg C. C. Liknes, Matthew Rigge, George Xian. 2018. A new generation of the United States National Land Cover Database: Requirements, research priorities, design, and implementation strategies
Ronald E. McRoberts, Stephen V Stehman, Greg C. C. Liknes, Erik Næsset, Christophe Sannier, Brian F. Walters. 2018. The effects of imperfect reference data on remote sensing-assisted estimators of land cover class proportions
Susan Crocker, Greg C. C. Liknes. 2017. Forests of New Jersey, 2016
Greg C. C. Liknes, Dacia M. Meneguzzo, Todd Kellerman. 2017. Shape indexes for semi-automated detection of windbreaks in thematic tree cover maps from the central United States
Susan Crocker, Greg C. C. Liknes, Fraser R. McKee, Jana S. Albers, Brian H. Aukema. 2016. Stand-level factors associated with resurging mortality from eastern larch beetle (Dendroctonus simplex LeConte)
Rachel Riemann, Greg C. C. Liknes, Jarlath O'Neil-Dunne, Chris Toney, Tonya Lister. 2016. Comparative assessment of methods for estimating tree canopy cover across a rural-to-urban gradient in the mid-Atlantic region of the USA
Greg C. C. Liknes, Dacia M. Meneguzzo, Kevin Nimerfro. 2015. Woody encroachment in the Central United States
Dacia M. Meneguzzo, Greg C. C. Liknes. 2015. Research Activities in Support of High-Resolution Land Cover Mapping in the North Central United States
Charlie Schrader-Patton, Greg C. C. Liknes, Demetrios Gatziolis, Brian M. Wing, Mark D. D. Nelson, Patrick D. Miles, Josh Bixby, Daniel G. Wendt, Dennis Kepler, Abbey Schaaf. 2015. Refining FIA plot locations using LiDAR point clouds
Greg C. C. Liknes, Susan Crocker, Randall Morin, Brian F. Walters. 2015. Hurricane impacts on forest resources in the Eastern United States: a post-sandy assessment
Dacia M. Meneguzzo, Greg C. C. Liknes. 2015. Status and trends of eastern redcedar (Juniperus virginiana) in the central United States: Analyses and observations based on Forest Inventory and Analysis data
Susan M. Stein, Mary A. Carr, Greg C. C. Liknes, Sara J. Comas. 2014. Islands on the edge: housing development and other threats to America's Pacific and Caribbean Island forests: a Forests on the Edge report
Jaketon H. Hewes, Brett J. Butler, Greg C. C. Liknes, Mark D. D. Nelson, Stephanie Snyder. 2014. Map of distribution of six forest ownership types in the conterminous United States
Ronald E. McRoberts, Greg C. C. Liknes, Grant M. Domke. 2014. Using a remote sensing-based, percent tree cover map to enhance forest inventory estimation
Brett J. Butler, Jaketon H. Hewes, Greg C. C. Liknes, Mark D. D. Nelson, Stephanie Snyder. 2014. A comparison of techniques for generating forest ownership spatial products
Greg C. C. Liknes, Randall Morin, Charles D. Canham. 2013. Trend analyses and projections using national forest inventory data
Dacia M. Meneguzzo, Greg C. C. Liknes, Mark D. D. Nelson. 2013. Mapping trees outside forests using high-resolution aerial imagery: a comparison of pixel- and object based classification approaches
Greg C. C. Liknes, Mark D. D. Nelson, Daniel Kaisershot. 2013. Net change in forest density, 1873-2001. Using historical maps to monitor long-term forest trends.
Sara A. Goeking, Greg C. C. Liknes. 2012. Is lodgepole pine mortality due to mountain pine beetle linked to the North American Monsoon?
Randall Morin, Greg C. C. Liknes. 2012. Poster abstracts of Moving from status to trends: Forest Inventory and Analysis (FIA) symposium 2012
Randall Morin, Greg C. C. Liknes. 2012. Abstracts of Moving from status to trends: Forest Inventory and Analysis (FIA) symposium 2012
Sara A. Goeking, Greg C. C. Liknes, Erik Lindblom, John M. Chase, Dennis M. Jacobs, Robert Benton. 2012. A GIS-based tool for estimating tree canopy cover on fixed-radius plots using high-resolution aerial imagery
Rachel Riemann, Jarlath O'Neil-Dunne, Greg C. C. Liknes. 2012. Building capacity for providing canopy cover and canopy height at FIA plot locations using high-resolution imagery and leaf-off LiDAR
Greg C. C. Liknes, Christopher W. W. Woodall, Brian F. Walters, Sara A. Goeking. 2012. Unlocking the climate riddle in forested ecosystems
Randall Morin, Greg C. C. Liknes. 2012. Moving from status to trends: Forest Inventory and Analysis (FIA) symposium 2012
Dacia M. Meneguzzo, Susan Crocker, Mark D. D. Nelson, Charles Barnett, Brett J. Butler, Grant M. Domke, Mark H. Hansen, Mark A. Hatfield, Greg C. C. Liknes, Andrew J. Lister, Tonya Lister, Ronald J. Piva, Barry T. (Ty) Wilson, Christopher W. W. Woodall. 2012. Nebraska's Forests 2010
Chris Toney, Greg C. C. Liknes, Andrew J. Lister, Dacia M. Meneguzzo. 2012. Assessing alternative measures of tree canopy cover: Photo-interpreted NAIP and ground-based estimates
Dacia M. Meneguzzo, Greg C. C. Liknes. 2012. A framework for reporting tree cover attributes in agricultural landscapes
Greg C. C. Liknes, Christopher W. W. Woodall, Charles H. (Hobie) Perry. 2012. Using inventory data to determine the impact of drought on tree mortality
Susan Crocker, Greg C. C. Liknes, Dacia M. Meneguzzo. 2011. Retrospective analysis of EAB spread: understanding the effect of landscape pattern on invasion and propagation
Greg C. C. Liknes, Susan Crocker, Dacia M. Meneguzzo. 2010. Climatic controls on emerald ash borer dispersal
Dacia M. Meneguzzo, Susan Crocker, Greg C. C. Liknes. 2010. A technique for mapping urban ash trees using object-based image analysis
Susan Crocker, Dacia M. Meneguzzo, Greg C. C. Liknes. 2010. Patterns among the ashes: Exploring the relationship between landscape pattern and the emerald ash borer
Patrick L. Zimmerman, Greg C. C. Liknes. 2010. The role of misclassification in estimating proportions and an estimator of misclassification probability
Mark D. D. Nelson, Greg C. C. Liknes, Brett J. Butler. 2010. Map of forest ownership in the conterminous United States. [Scale 1:7,500,000].
Greg C. C. Liknes, Charles H. (Hobie) Perry, Dacia M. Meneguzzo. 2010. Assessing tree cover in agricultural landscapes using high-resolution aerial imagery
Greg C. C. Liknes, Mark D. D. Nelson, Brett J. Butler. 2010. Public and private forest ownership in the conterminous United States. Chapter 6.
Christopher W. W. Woodall, David J. Nowak, Greg C. C. Liknes, Jim Westfall. 2010. Assessing the potential for urban trees to facilitate forest tree migration in the eastern United States
Bonnie Ruefenacht, Greg C. C. Liknes, Andrew J. Lister, Haans Fisk, Dan Wendt. 2009. Evaluation of open source data mining software packages
Greg C. C. Liknes, Christopher W. W. Woodall, Charles H. (Hobie) Perry. 2009. Predicting forest attributes from climate data using a recursive partitioning and regression tree algorithm
Sara A. Goeking, Greg C. C. Liknes. 2009. The role of pre-field operations at four forest inventory units: We can see the trees, not just the forest
Greg C. C. Liknes, Mark D. D. Nelson. 2009. Improving Forest Inventory and Analysis efficiency with common land unit information
Greg C. C. Liknes, Mark D. D. Nelson, Dale D. Gormanson, Mark H. Hansen. 2009. The utility of the cropland data layer for Forest Inventory and Analysis
Mark D. D. Nelson, Greg C. C. Liknes, Charles H. (Hobie) Perry. 2009. Combining forest inventory, satellite remote sensing, and geospatial data for mapping forest attributes of the conterminous United States
Christopher W. W. Woodall, Greg C. C. Liknes. 2008. Climatic regions as an indicator of forest coarse and fine woody debris carbon stocks in the United States
Christopher W. W. Woodall, Greg C. C. Liknes. 2008. Relationships between forest fine and coarse woody debris carbon stocks across latitudinal gradients in the United States as an indicator of climate change effects
Charles H. (Hobie) Perry, Christopher W. W. Woodall, Greg C. C. Liknes, M.M. Schoeneberger. 2008. Filling the gap: improving estimates of working tree resources in agricultural landscapes
Charles H. (Hobie) Perry, Vern A. Everson, Ian K. Brown, Jane Cummings-Carlson, Sally E. Dahir, Edward A. Jepsen, Joe Kovach, Michael D. Labissoniere, Terry R. Mace, Eunice A. Padley, Richard B. Rideout, Brett J. Butler, Susan Crocker, Greg C. C. Liknes, Randall Morin, Mark D. D. Nelson, Barry T. (Ty) Wilson, Christopher W. W. Woodall. 2008. Wisconsin's forests, 2004
Mark D. D. Nelson, Greg C. C. Liknes. 2007. Forest Land Ownership in the Conterminous United States [map]
Christopher W. W. Woodall, Jay J. Charney, Greg C. C. Liknes, Brian Potter. 2006. Linking Fuel Inventories With Atmospheric Data for Assessment of Fire Danger
Ronald E. McRoberts, Geoffrey R. Holden, Mark D. D. Nelson, Greg C. C. Liknes, Dale D. Gormanson. 2006. Using satellite imagery as ancillary data for increasing the precision of estimates for the Forest Inventory and Analysis program of the USDA Forest Service
Ronald E. McRoberts, R. James Barbour, Krista M. Gebert, Greg C. C. Liknes, Mark D. D. Nelson, Dacia M. Meneguzzo, et al. 2006. Using basic geographic information systems functionality to support sustainable forest management decision making and post-decision assessments
Ronald E. McRoberts, D.G. Wendt, Greg C. C. Liknes. 2005. Stratified estimation of forest inventory variables using spatially summarized stratifications
USDA Forest Service, Bob Rummer, Jeffrey P. Prestemon, Dennis M. May, Patrick D. Miles, John S. Vissage, Ronald E. McRoberts, Greg C. C. Liknes, Wayne D. Shepperd, Dennis Ferguson, William J. Elliot, Ina Sue S. Miller, Steve Reutebuch, Jamie Barbour, Jeremy S. Fried, Bryce Stokes, Ted Bilek, Kenneth E. Skog. 2005. A strategic assessment of forest biomass and fuel reduction treatments in Western States
Ronald E. McRoberts, Greg C. C. Liknes. 2005. Assessing the Effects of Forest Fragmentation Using Satellite Imagery and Forest Inventory Data
Greg C. C. Liknes, Geoffrey R. Holden, Mark D. D. Nelson, Ronald E. McRoberts. 2005. Spatially Locating FIA Plots from Pixel Values
Mark D. D. Nelson, Ronald E. McRoberts, Greg C. C. Liknes, Geoffrey R. Holden. 2005. Comparing Forest/Nonforest Classifications of Landsat TM Imagery for Stratifying FIA Estimates of Forest Land Area
Ronald E. McRoberts, Greg C. C. Liknes, Mark D. D. Nelson, Krista M. Gebert, R. James Barbour, Susan L. Odell, Steven C. Yaddof. 2005. Allocating Fire Mitigation Funds on the Basis of the Predicted Probabilities of Forest Wildfire
W. Keith Moser, Greg C. C. Liknes, Mark H. Hansen, Kevin K. Nimerfro. 2005. Incorporation of Precipitation Data Into FIA Analyses: A Case Study of Factors Influencing Susceptibility to Oak Decline in Southern Missouri, U.S.A.
Christopher W. W. Woodall, Jay J. Charney, Greg C. C. Liknes, Brian Potter. 2005. What's the fire danger now? Linking fuel inventories with atmospheric data
Ronald E. McRoberts, Geoffrey R. Holden, Mark D. D. Nelson, Greg C. C. Liknes, W. Keith Moser, Andrew J. Lister, Susan L. King, Elizabeth Burrill, John W. Coulston, Brad Smith, Greg Reams. 2005. Estimating and circumventing the effects of perturbing and swapping inventory plot locations
Greg C. C. Liknes, Mark D. D. Nelson, Ronald E. McRoberts. 2004. Evaluating Classified MODIS Satellite Imagery as a Stratification Tool
Bob Rummer, Jeffrey P. Prestemon, Dennis M. May, Patrick D. Miles, John S. Vissage, Ron McRoberts, Greg C. C. Liknes, Wayne D. Shepperd, Dennis Ferguson, William J. Elliot, Ina Sue S. Miller, Steve Reutebuch, Jamie Barbour, Jeremy S. Fried, Bryce Stokes, Edward Bilek, Ken Skog. 2003. A strategic assessment of forest biomass and fuel reduction treatments in western states
Katherine P. O Neill, Michael Amacher, Craig Palmer, Barbara Conkling, Greg C. C. Liknes. 2003. Soil Quality as an Indicator of Forest Health: an Overview and Initial Results from the USFS Forest Inventory and Analysis Soil Indicator Program
Ronald E. McRoberts, Greg C. C. Liknes. 2002. The effects of forest fragmentation on forest stand attributes

University of Minnesota, M.S., Department of Soil, Water, & Climate, 1999
University of North Dakota, B.S., Department of Atmospheric Science, 1996

Last updated March 10, 2026