| Use of ground-penetrating radar to study tree roots in the southeastern United States JR Butnor, JA Doolittle, L Kress, S Cohen, KH Johnsen Tree physiology 21 (17), 1269-1278, 2001 | 295 | 2001 |
| Utility of ground‐penetrating radar as a root biomass survey tool in forest systems JR Butnor, JA Doolittle, KH Johnsen, L Samuelson, T Stokes, L Kress Soil Science Society of America Journal 67 (5), 1607-1615, 2003 | 268 | 2003 |
| Reduction of forest floor respiration by fertilization on both carbon dioxide‐enriched and reference 17‐year‐old loblolly pine stands JR Butnor, KH Johnsen, RAM Oren, GG Katul Global Change Biology 9 (6), 849-861, 2003 | 156 | 2003 |
| Meeting global policy commitments: carbon sequestration and southern pine forests KH Johnsen, D Wear, R Oren, RO Teskey, F Sanchez, R Will, J Butnor, ... Journal of Forestry 99 (4), 14-21, 2001 | 150 | 2001 |
| Aboveground sink strength in forests controls the allocation of carbon below ground and its [CO2]-induced enhancement S Palmroth, R Oren, HR McCarthy, KH Johnsen, AC Finzi, JR Butnor, ... Proceedings of the National Academy of Sciences 103 (51), 19362-19367, 2006 | 144 | 2006 |
| EFFECT OF ELEVATED CO2 ON COARSE‐ROOT BIOMASS IN FLORIDA SCRUB DETECTED BY GROUND‐PENETRATING RADAR DB Stover, FP Day, JR Butnor, BG Drake Ecology 88 (5), 1328-1334, 2007 | 137 | 2007 |
| Modelling the limits on the response of net carbon exchange to fertilization in a south‐eastern pine forest CT Lai, G Katul, J Butnor, M Siqueira, D Ellsworth, C Maier, K Johnsen, ... Plant, Cell & Environment 25 (9), 1095-1120, 2002 | 102 | 2002 |
| Soil carbon sequestration and changes in fungal and bacterial biomass following incorporation of forest residues MD Busse, FG Sanchez, AW Ratcliff, JR Butnor, EA Carter, RF Powers Soil Biology and Biochemistry 41 (2), 220-227, 2009 | 101 | 2009 |
| Ground penetrating radar (GPR) detects fine roots of agricultural crops in the field X Liu, X Dong, Q Xue, DI Leskovar, J Jifon, JR Butnor, T Marek Plant and Soil 423, 517-531, 2018 | 92 | 2018 |
| Growth and physiology of loblolly pine in response to long-term resource management: defining growth potential in the southern United States LJ Samuelson, J Butnor, C Maier, TA Stokes, K Johnsen, M Kane Canadian Journal of Forest Research 38 (4), 721-732, 2008 | 92 | 2008 |
| Physiological girdling of pine trees via phloem chilling: proof of concept K Johnsen, C Maier, F Sanchez, P Anderson, J Butnor, R Waring, ... Plant, cell & environment 30 (1), 128-134, 2007 | 90 | 2007 |
| Hurricane Katrina winds damaged longleaf pine less than loblolly pine KH Johnsen, JR Butnor, JS Kush, RC Schmidtling, CD Nelson Southern Journal of Applied Forestry 33 (4), 178-181, 2009 | 74 | 2009 |
| Detecting defects in conifers with ground penetrating radar: applications and challenges JR Butnor, ML Pruyn, DC Shaw, ME Harmon, AN Mucciardi, MG Ryan Forest pathology 39 (5), 309-322, 2009 | 73 | 2009 |
| Branch growth and gas exchange in 13-year-old loblolly pine (Pinus taeda) trees in response to elevated carbon dioxide concentration and fertilization CA Maier, KH Johnsen, J Butnor, LW Kress, PH Anderson Tree Physiology 22 (15-16), 1093-1106, 2002 | 72 | 2002 |
| Ecosystem carbon stocks in Pinus palustris forests LJ Samuelson, TA Stokes, JR Butnor, KH Johnsen, ... Canadian Journal of Forest Research 44 (5), 476-486, 2014 | 69 | 2014 |
| Soils, peatlands, and biomonitoring JA Doolittle, JR Butnor Ground penetrating radar: theory and applications 524, 2009 | 65 | 2009 |
| Modelling night‐time ecosystem respiration by a constrained source optimization method CT Lai, G Katul, J Butnor, D Ellsworth, R Oren Global Change Biology 8 (2), 124-141, 2002 | 65 | 2002 |
| Soil properties differently influence estimates of soil CO2 efflux from three chamber-based measurement systems JR Butnor, KH Johnsen, CA Maier Biogeochemistry 73, 283-301, 2005 | 55 | 2005 |
| The effects of 11 yr of CO2 enrichment on roots in a Florida scrub‐oak ecosystem FP Day, RE Schroeder, DB Stover, ALP Brown, JR Butnor, J Dilustro, ... New Phytologist 200 (3), 778-787, 2013 | 52 | 2013 |
| Ecosystem carbon density and allocation across a chronosequence of longleaf pine forests LJ Samuelson, TA Stokes, JR Butnor, KH Johnsen, ... Ecological Applications 27 (1), 244-259, 2017 | 51 | 2017 |
