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You are here: NRS Home / Scientists & Staff / Charles H. (Hobie) Perry
Scientists & Staff

Charles H. (Hobie) Perry

Title: Research Soil Scientist
Unit: Forest Inventory & Analysis
Address: Northern Research Station
1992 Folwell
St. Paul, MN 55108
Phone: 651-649-5191
E-mail: Contact Charles H. (Hobie) Perry

Jump to Publications

Education

  • University of Minnesota, Ph.D.. Forestry, 1998
  • University of Minnesota, M.S. Forestry, 1993
  • University of Michigan, A.B. Philosophy, 1989

Civic & Professional Affiliations

American Geophysical Union, Soil Science Society of America

Current Research

I work in the Forest Inventory and Analysis (FIA) Research Work Unit as a Research Soil Scientist. I have national FIA responsibilities as the eastern U.S. Soils Indicator Advisor for Phase 3 forest health monitoring. In that role, I coordinate nationwide soils data collection, analysis, and dissemination on the Phase 3 plots with the western U.S. Indicator Advisor, Michael Amacher. I serve as the lead analyst for the State of Wisconsin, and I also contribute to core reporting in other States.

I have additional research responsibilities. These include development of methods for estimating the soils component of carbon measures, development of soils-related spatial products, collaboration with other Northern Station FIA scientists to enhance the quality of FIA estimates and to contribute to ongoing studies (e.g., productivity and diversity), and collaboration with government, university, and other scientists.

Why is This Important

The soil resource is the foundation of the forest ecosystem. Soil data collected and spatial products produced by FIA are of vital importance to decision makers. For example, both regional and more detailed state estimates of forest carbon sequestration are underway. The soils component of these estimates are very uncertain or based upon databases that are increasingly out-of-date. Only FIA data is a rolling annual inventory of the forest soil resource.

Future Research

  1. Carbon stored in the soil profile represents the largest fraction of carbon stored in forest ecosystems. I am building a spatially explicit database of soil carbon storage that can be used to test and validate extant models.
  2. The Phase 3 data are collected on a grid where one plot represents approximately 95,000 acres of forest land, and spatial data products are an important resource created from FIA data. The traditional method of summarizing soils data to soil order may not be appropriate for regional analyses. Other topographic or land resource area models may be more appropriate. I am analyzing different methods of generalizing and summarizing our data across varying spatial scales.
  3. Mercury is a pollutant that is primarily accumulated in forests through atmospheric deposition. Upland soils are sinks for mercury. Forest fires release mercury into the atmosphere when the forest floor is consumed, while mercury concentration in the mineral soil may be unaffected. As industrial emissions come under increasing regulation, the contribution of forest fires to the mercury budget is an increasingly significant unknown. I am collaborating with U.S. Geological Survey and Forest Service scientists to create an accurate inventory of forest soil mercury.
  4. The effectiveness of a soil inventory is dependent upon its ability to make meaningful measurements of the properties of interest. Some properties currently measured or estimated by the field protocol could also be measured by other means, so I am assessing field protocols is assure to the validity and utility of FIA data.

Please contact me if you would like to collaborate on any of these or other related issues.

Featured Publications

  • Woodall, Christopher W.; Perry, Charles H.; Westfall, James A. 2012. An empirical assessment of forest floor carbon stock components across the United States. Forest Ecology and Management. 269: 1-9.
  • Perry, Charles H.; Zimmerman, Patrick L. 2012. Building improved models of sugar maple mortality. In: Morin, Randall S.; Liknes, Greg C., comps. Moving from status to trends: Forest Inventory and Analysis (FIA) symposium 2012; 2012 December 4-6; Baltimore, MD. Gen. Tech. Rep. NRS-P-105. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. [CD-ROM]: 204-209.
  • Lister, Tonya W.; Gladders, Glenn; Barnett, Charles J.; Brand, Gary J.; Butler, Brett J.; Crocker, Susan J.; Domke, Grant M.; Griffith, Douglas M.; Hatfield, Mark A.; Kurtz, Cassandra M.; Lister, Andrew J.; Morin, Randall S.; Moser, W. Keith; Nelson, Mark D.; Perry, Charles H.; Piva, Ronald J.; Riemann, Rachel; Woodall, Christopher W. 2012. Delaware's Forests 2008. Resour. Bull. NRS-62. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 56 p. [DVD included].
  • Stueve, Kirk M.; Housman, Ian W.; Zimmerman, Patrick L.; Nelson, Mark D.; Webb, Jeremy; Perry, Charles H.; Chastain, Robert A.; Gormanson, Dale D.; Huang, Chengquan; Healey, Sean P.; Cohen, Warren B. 2012. Improving automated disturbance maps using snow-covered landsat time series stacks. In: Morin, Randall S.; Liknes, Greg C., comps. Moving from status to trends: Forest Inventory and Analysis (FIA) symposium 2012; 2012 December 4-6; Baltimore, MD. Gen. Tech. Rep. NRS-P-105. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. [CD-ROM]: 137-142.
  • Nelson, Mark; Stueve, Kirk; Perry, Charles; Gormanson, Dale; Huang, Chengquan; Healey, Sean. 2012. Mapping young forest in Wisconsin. Res. Note NRS-154. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 5 p.

Additional Online Publications

  • Widmann, Richard H.; Crawford, Sloane; Barnett, Charles; Butler, Brett J.; Domke, Grant M.; Griffith, Douglas M.; Hatfield, Mark A.; Kurtz, Cassandra M.; Lister, Tonya W.; Morin, Randall S.; Moser, W. Keith; Perry, Charles H.; Riemann, Rachel; Woodall, Christopher W. 2012. New York's Forests 2007. New York's Forests 2007. Resour. Bull. NRS-65. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 64 p. [DVD included].
  • Widmann, Richard H.; Cook, Gregory W.; Barnett, Charles J.; Butler, Brett J.; Griffith, Douglas M.; Hatfield, Mark A.; Kurtz, Cassandra M.; Morin, Randall S.; Moser, W. Keith; Perry, Charles H.; Piva, Ronald J.; Riemann, Rachel; Woodall, Christopher W. 2012. West Virginia's Forests 2008. Resour. Bull. NRS-61 Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 64 p. [DVD included].
  • Perry, Charles H.; Everson, Vern A.; Butler, Brett J.; Crocker, Susan J.; Dahir, Sally E.; Diss-Torrance, Andrea L.; Domke, Grant M; Gormanson, Dale D.; Herrick, Sarah K.; Hubbard, Steven S.; Mace, Terry R.; Miles, Patrick D.; Nelson, Mark D.; Rodeout, Richard B.; Saunders, Luke T.; Stueve, Kirk M.; Wilson, Barry T.; Woodall, Christopher W. 2012. Wisconsin's Forests 2009. Resour. Bull. NRS-67. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 62 p. [Includes DVD].
  • Perry, C.H. 2012. Wisconsin's forest resources, 2011. Res. Note NRS-136. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 4 p.
  • Stueve, Kirk M.; Perry, Charles H. (Hobie); Nelson, Mark D.; Healey, Sean P.; Hill, Andrew D.; Moisen, Gretchen G.; Cohen, Warren B.; Gormanson, Dale D.; Huang, Chengquan. 2011. Ecological importance of intermediate windstorms rivals large, infrequent disturbances in the northern Great Lakes. Ecosphere 2:art2. [doi:10.1890/ES10-00062.1]
  • Woodall, Christopher W.; Webb, Mark N.; Wilson, Barry T.; Settle, Jeff; Piva, Ron J.; Perry, Charles H.; Meneguzzo, Dacia M.; Crocker, Susan J.; Butler, Brett J.; Hansen, Mark; Hatfield, Mark; Brand, Gary; Barnett, Charles. 2011. Indiana's Forests 2008. Resour. Bull. NRS-45. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 56 p. [CD included].
  • Nelson, Mark D.; Brewer, Matt; Woodall, Christopher W.; Perry, Charles H.; Domke, Grant M.; Piva, Ronald J.; Kurtz, Cassandra M.; Moser, W. Keith; Lister, Tonya W.; Butler, Brett J.; Meneguzzo, Dacia M.; Miles, Patrick D.; Barnett, Charles J.; Gormanson, Dale. 2011. Iowa's Forests 2008. Resour. Bull. NRS-52. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 48 p. [DVD included].
  • McCaskill, George L.; McWilliams, William H.; Barnett, Charles J.; Butler, Brett J.; Hatfield, Mark A.; Kurtz, Cassandra M.; Morin, Randall S.; Moser, W. Keith; Perry, Charles H.; Woodall, Christopher W. 2011. Maine's forests 2008. Resour. Bull. NRS- 48. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 62 p. [DVD included].
  • Lister, T.W.; Perdue, J.L.; Barnett, C.J.; Butler, B.J.; Crocker, S.J.; Domke, G.M.; Griffith, D.; Hatfield, M.A.; Kurtz, C.M.; Lister, A.J.; Morin, R.S.; Moser, W.K.; Nelson, M.D.; Perry, C.H.; Piva, R.J.; Riemann, R.; Widmann, R.; Woodall, C.W. 2011. Maryland's Forests 2008. Resour. Bull. NRS-58. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 60 p. [DVD included].
  • Miles, Patrick D.; Heinzen, David; Mielke, Manfred E.; Woodall, Christopher W.; Butler, Brett J.; Piva, Ron J.; Meneguzzo, Dacia M.; Perry, Charles H.; Gormanson, Dale D.; Barnett, Charles J. 2011. Minnesota's Forests 2008. Bull. NRS-50. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northen Research Station. 67 p. [DVD included].
  • Morin, Randall S.; Barnett, Chuck J.; Brand, Gary J.; Butler, Brett J.; Domke, Grant M.; Francher, Susan; Hansen, Mark H.; Hatfield, Mark A.; Kurtz, Cassandra M.; Moser, W. Keith; Perry, Charles H.; Piva, Ron; Riemann, Rachel; Woodall, Chris W. 2011. New Hampshire's Forests 2007. Resour. Bull. NRS-53. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 56 p. [DVD included].
  • Crocker, Susan J.; Nelson, Mark D.; Barnett, Charles J.; Brand, Gary J.; Butler, Brett J.; Domke, Grant M.; Hansen, Mark H.; Hatfield, Mark A.; Lister, Tonya W.; Meneguzzo, Dacia M.; Perry, Charles H.; Piva, Ronald J.; Wilson, Barry T.; Woodall, Christopher W.; Zipse, Bill. 2011. New Jersey's forests, 2008. Resour. Bull. NRS-59. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 52 p. [DVD included].
  • Woodall, Christopher William; Amacher, Michael C.; Bechtold, William A.; Coulston, John W.; Jovan, Sarah; Perry, Charles H.; Randolph, KaDonna C.; Schulz, Beth K.; Smith, Gretchen C.; Tkacz, Borys; Will-Wolf, Susan. 2011. Status and future of the forest health indicators program of the USA. Environmental Monitoring and Assessment. 177: 419-436.
  • Butler, Brett J.; Barnett, Charles J.; Crocker, Susan J.; Domke, Grant M.; Gormanson, Dale ; Hill, William N.; Kurtz, Cassandra M.; Lister, Tonya; Martin, Christopher; Miles, Patrick D.; Morin, Randall; Moser, W. Keith; Nelson, Mark D.; O'Connell, Barbara; Payton, Bruce; Perry, Charles H.; Piva, Ronald J.; Riemann, Rachel; Woodall, Christopher W. 2011. The Forests of Southern New England, 2007: A report on the forest resources of Connecticut, Massachusetts, and Rhode Island. Resour. Bull. NRS-55. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 48 p. [DVD included].
  • Morin, Randall S.; Barnett, Chuck J.; Brand, Gary J.; Butler, Brett J.; De Geus, Robert; Hansen, Mark H.; Hatfield, Mark A.; Kurtz, Cassandra M.; Moser, W. Keith; Perry, Charles H.; Piva, Ron; Riemann, Rachel; Widmann, Richard; Wilmot, Sandy; Woodall, Chris W. 2011. Vermont's Forests 2007. Resour. Bull. NRS-51. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 56 p. [DVD included].
  • Perry, C.H. 2011. Wisconsin's forest resources, 2009. Res. Note NRS-92. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 4 p.
  • Perry, C.H. 2011. Wisconsin's forest resources, 2010. Note NRS-108. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 4 p.
  • Liknes, Greg C.; Perry, Charles H.; Meneguzzo, Dacia M. 2010. Assessing tree cover in agricultural landscapes using high-resolution aerial imagery. Journal of Terrestrial Observation. 2(1): 38-55.
  • Woodall, C.W.; Morin, R.S.; Steinman, J.R.; Perry, C.H. 2010. Comparing evaluations of forest health based on aerial surveys and field inventories: Oak forests in the Northern United States. Ecological Indicators. 10: 713-718.
  • Perry, Charles H.; Nelson, Mark D.; Piva, Ronald J. 2010. Imports and exports of roundwood in the upper Midwestern United States. Chapter 2.. In: Eredics, Peter, ed. Mapping Forestry. Redlands, CA: ESRI Press: 5-8.
  • Woodall, C.W.; Oswalt, C.M.; Westfall, J.A.; Perry, C.H.; Nelson, M.D.; Finley, A.O. 2010. Selecting tree species for testing climate change migration hypotheses using forest inventory data. Forest Ecology and Management. 259: 778-785.
  • Woodall, Christopher W.; Conkling, Barbara L.; Amacher, Michael C.; Coulston, John W.; Jovan, Sarah; Perry, Charles H.; Schulz, Beth; Smith, Gretchen C.; Will Wolf, Susan. 2010. The Forest Inventory and Analysis Database Version 4.0: Database Description and Users Manual for Phase 3. Gen. Tech. Rep. NRS-61. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 180 p.
  • Woodall, C.W.; Oswalt, C.M.; Westfall, J.A.; Perry, C.H.; Nelson, M.D.; Finley, A.O. 2009. An indicator of tree migration in forests of the eastern United States. Forest Ecology and Management. 257: 1434-1444.
  • Perry, Charles H. (Hobie); Nelson, Mark D. 2009. Cartographic standards to improve maps produced by the Forest Inventory and Analysis program. In: McRoberts, Ronald E.; Reams, Gregory A.; Van Deusen, Paul C.; McWilliams, William H., eds. Proceedings of the eighth annual forest inventory and analysis symposium; 2006 October 16-19; Monterey, CA. Gen. Tech. Report WO-79. Washington, DC: U.S. Department of Agriculture, Forest Service. 325-331.
  • Nelson, Mark; Liknes, Greg; Perry, Charles H. 2009. Combining forest inventory, satellite remote sensing, and geospatial data for mapping forest attributes of the conterminous United States. In: McWilliams, Will; Moisen, Gretchen; Czaplewski, Ray, comps. Forest Inventory and Analysis (FIA) Symposium 2008; October 21-23, 2008; Park City, UT. Proc. RMRS-P-56CD. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 9 p.
  • Smith, W. Brad, tech. coord.; Miles, Patrick D., data coord.; Perry, Charles H., map coord.; Pugh, Scott A., Data CD coord. 2009. Forest Resources of the United States, 2007. Gen. Tech. Rep. WO-78. Washington, DC: U.S. Department of Agriculture, Forest Service, Washington Office. 336 p.
  • Crocker, Susan J.; Brand, Gary J.; Butler, Brett J.; Haugen, David E.; Little, Dick C.; Meneguzzo, Dacia M.; Perry, Charles H.; Piva, Ronald J.; Wilson, Barry T.; Woodall, Christopher W. 2009. Illinois' Forests 2005. Resour. Bull. NRS-29. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 114 p.
  • Pugh, Scott A.; Hansen, Mark H.; Pedersen, Lawrence D.; Heym, Douglas C.; Butler, Brett J.; Crocker, Susan J.; Meneguzzo, Dacia; Perry, Charles H.; Haugen, David E.; Woodall, Christopher; Jepsen, Ed. 2009. Michigan's forests 2004. Resour. Bull. NRS-34. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 210 p.
  • Haugen, David E.; Kangas, Michael; Crocker, Susan J.; Perry, Charles H.; Woodall, Christopher W.; Butler, Brett J.; Wilson, Barry T.; Kaisershot, Dan J. 2009. North Dakota's forests 2005. Resour. Bull. NRS-31. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 82 p.
  • Widmann, Richard H.; Balser, Dan; Barnett, Charles; Butler, Brett J.; Griffith, Douglas M.; Lister, Tonya W.; Moser, W. Keith; Perry, Charles H.; Riemann, Rachel; Woodall, Christopher W. 2009. Ohio forests: 2006. Resour. Bull. NRS-36. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 119 p.
  • Piva, Ronald J.; Moser, W. Keith; Haugan, Douglas D.; Josten, Gregory J.; Brand, Gary J.; Butler, Brett J.; Crocker, Susan J.; Hansen, Mark H.; Meneguzzo, Dacia M.; Perry, Charles H.; Woodall, Christopher W. 2009. South Dakota's forests 2005. Resour. Bull. NRS-35. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 96 p.
  • Perry, Charles H. (Hobie); Amacher, Michael C.; Cannon, William; Kolka, Randall K.; Woodruff, Laurel. 2009. The distribution of mercury in a forest floor transect across the central United States. In: McRoberts, Ronald E.; Reams, Gregory A.; Van Deusen, Paul C.; McWilliams, William H., eds. Proceedings of the eighth annual forest inventory and analysis symposium; 2006 October 16-19; Monterey, CA. Gen. Tech. Report WO-79. Washington, DC: U.S. Department of Agriculture, Forest Service. 103-108.
  • Woodall, Christopher W.; Oswalt, Christopher M.; Westfall, James A.; Perry, Charles H.; Nelson, Mark N. 2009. Tree migration detection through comparisons of historic and current forest inventories. In: McWilliams, Will; Moisen, Gretchen; Czaplewski, Ray, comps. Forest Inventory and Analysis (FIA) Symposium 2008; October 21-23, 2008; Park City, UT. Proc. RMRS-P-56CD. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 9 p.
  • Perry, C.H. 2009. Wisconsin's forest resources, 2008. Res. Note. NRS-42. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 4 p.
  • Perry, C.H.; Woodall, C.W.; Liknes, G.C.; Schoeneberger, M.M. 2008. Filling the gap: improving estimates of working tree resources in agricultural landscapes. Agroforest Systems.
  • Moser, W. Keith; Hansen, Mark H.; Atchison, Robert L.; Brand, Gary J.; Butler, Brett J.; Crocker, Susan J.; Meneguzzo, Dacia M.; Nelson, Mark D.; Perry, Charles H.; Reading, William H. IV; Wilson, Barry T.; Woodall, Christopher W. 2008. Kansas forests 2005. Resour. Bull. NRS-26. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 125 p.
  • Meneguzzo, Dacia M.; Butler, Brett J.; Crocker, Susan J.; Haugen, David E.; Moser, W. Keith; Perry, Charles H.; Wilson, Barry T.; Woodall, Christopher W. 2008. Nebraska's forests, 2005. Resour. Bull. NRS-27. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 94 p.
  • Woodall, Chris W.; Morin, Randall S.; Steinman, Jim R.; Perry, Charles H. 2008. Status of oak seedlings and saplings in the northern United States: implications for sustainability of oak forests. In: Jacobs, Douglass F.; Michler, Charles H., eds. 2008. Proceedings, 16th Central Hardwood Forest Conference; 2008 April 8-9; West Lafayette, IN. Gen. Tech. Rep. NRS-P-24. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station: 535-542.
  • Perry, C.H.; Everson, V.A. 2008. Wisconsin's Forest Resources, 2007. Res. Note. NRS-26. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 4 p.
  • Hansen, Mark H.; Perry, Charles H.; Brand, Gary; McRoberts, Ronald E. 2008. Wisconsin's forest, 2004: statistics and quality assurance. Resour. Bull. NRS-24. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 98 p.
  • Perry, Charles H. (Hobie); Everson, Vern A.; Brown, Ian K.; Cummings-Carlson, Jane; Dahir, Sally E.; Jepsen, Edward A.; Kovach, Joe; Labissoniere, Michael D.; Mace, Terry R.; Padley, Eunice A.; Rideout, Richard B.; Butler, Brett J.; Crocker, Susan J.; Liknes, Greg C.; Morin, Randall S.; Nelson, Mark D.; Wilson, Barry T. (Ty); Woodall, Christopher W. 2008. Wisconsin's forests, 2004. Resour. Bull. NRS-23. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 104 p.
  • Moser, W. Keith; Hansen, Mark H.; Nelson, Mark D.; Crocker, Susan J.; Perry, Charles H.; Schulz, Bethany; Woodall, Christopher W. 2007. After the blowdown: a resource assessment of the Boundary Waters Canoe Area Wilderness, 1999-2003. Gen. Tech. Rep. NRS-7. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 54 p.
  • Miles, Patrick D.; Jacobson, Keith; Brand , Gary J.; Jepsen, Ed; Meneguzzo, Dacia; Mielke, Manfred E.; Olson, Cassandra; Perry, Charles H. (Hobie); Piva, Ronald J.; Wilson, Barry Tyler; Woodall, Christopher. 2007. Minnesota's forests 1999-2003 (Part A). Resour. Bull. NRS-12A. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 92 p.
  • Moser, W. Keith; Hansen, Mark H.; Treiman, Thomas B.; Leatherberry, Earl C.; Jepsen, Ed; Olson, Cassandra L.; Perry, Charles H.; Piva, Ronald J.; Woodall, Christopher W.; Brand, Gary J. 2007. Missouri's forests 1999-2003 (Part A). Resour. Bull. NRS-10. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 79 p.
  • McWilliams, William H.; Cassell, Seth P.; Alerich, Carol L.; Butler, Brett J.; Hoppus, Michael L.; Horsley, Stephen B.; Lister, Andrew J.; Lister, Tonya W.; Morin, Randall S.; Perry, Charles H.; Westfall, James A.; Wharton, Eric H.; Woodall, Christopher W. 2007. Pennsylvania's Forest 2004. Resour. Bull. NRS-20. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 86 p.
  • Steber, Aaron; Brooks, Ken; Perry, Charles H.; Kolka, Randy. 2007. Surface compaction estimates and soil sensitivity in Aspen stands of the Great Lakes States. Northern Journal of Applied Forestry. 24(4): 276-281.
  • Perry, C.H.; Everson, V.A. 2007. Wisconsin's forest resources, 2006. Res. Note. NRS-2. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 4 p.
  • Leatherberry, Earl C.; Moser, W. Keith; Perry, Charles; Woodall, Christopher; Jespen, Edward; Pennington, Steve; Flickinger, Aron. 2006. Iowa's forests 1999-2003 (Part A). Resour. Bull. NC-266A. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Research Station. 84 p.
  • Woodall, Christopher W.; Perry, Charles H.; Miles, Patrick D. 2006. The relative density of forests in the United States. Forest Ecology and Management 226 (2006) 368?372
  • Perry, Charles H. 2006. Wisconsin's forest resources in 2004. Resour. Bull. NC-261. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Research Station. 34 p.
  • Perry, Charles, H. (Hobie); Brand, Gary J. 2006. Wisconsin's forest resources, 2005. Resour. Bull. NRS-2. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 32 p.
  • Woodall, Christopher; Johnson, Dan; Gallion, Joey; Perry, Charles; Butler, Brett; Piva, Ron; Jepsen, Ed; Nowak, Dave; Marshall, Phil. 2005. Indiana's forests 1999-2003 (Part A). Resour. Bull. NC-253A. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Research Station. 94 p.
  • Perry, C. H.; Woodall, C. W.; Schoeneberger, M.M. 2005. Inventorying trees in agricultural landscapes: towards an accounting of working trees. In: Brooks K.N. and Ffolliott P.F. (eds) Moving Agroforestry into the Mainstream. Proc. 9th N. Am. Agroforest. Conf., Rochester, MN. 12-15 June 2005 [CD-ROM]. Dept. Forest Resources, Univ. Minnesota, St. Paul, MN, 12 p.
  • O'Neill, Katherine P; Amacher, Michael C.; Perry, Charles H. 2005. Soils as an indicator of forest health: a guide to the collection, analysis, and interpretation of soil indicator data in the Forest Inventory and Analysis program. Gen. Tech. Rep. NC-258. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Research Station. 53 p.

Last Modified: 02/15/2012