Dr. Paul Knapp




Biogeography, Climatology, Dendroecology


Ph.D. Georgia, 1989


Dr. Knapp’s academic interests include biogeography, climatology, and dendroecology with a regional focus in the American West. Dr. Knapp’s research has focused on examining the influence of atmospheric CO2 enrichment on the growth rates of woody species in arid and semiarid environments, and the paleoclimatology of the interior Pacific Northwest.

Carolina Tree-Ring Science Laboratory

Recent Publications

2017 Knapp, P.A. and Soule’, P.T. Spatio-temporal linkages between declining Arctic sea-ice extent and increasing wildfire activity in the western United States. Forests 8(9), 313; doi:10.3390/f8090313.
2016 Patterson, T.W. and Knapp, P.A. Stand dynamics influence masting/radial growth relationships inPinus palustris Mill. Castanea  81:314-322.
2016 Hadley, K.S. and Knapp, P.A. Post-windstorm radial growth of Picea sitchensis and Pseudotsuga menziesii. Madroño 63(3):234-248.
2016 Knapp, P.A, Maxwell, J.T., and Soulé, P.T. Tropical cyclone rainfall variability in coastal North Carolina derived from longleaf pine (Pinus palustris Mill.): AD 1771–2014. Climatic Change 135:311-323.
2016 Knapp, P.A., Maxwell, J.T., Ortegren, J.O. and Soulé, P.T. Spatio-temporal changes in comfortable weather duration in the continental U.S. and implications for human wellness. Annals of the Association of American Geographers 106:1-18.
2016 Patterson, T.W. and Knapp, P.A. Observations on a rare old-growth montane longleaf pine forest in central North Carolina. Natural Areas Journal   36:500-508.
2016 Patterson, T.W., Cummings, L.W. and Knapp, P.A. Longleaf pine (Pinus palustris Mill.) morphology and climate/growth responses along a physiographic gradient in North Carolina.  The Professional Geographer  68:238-248.
2015 Soulé, P.T. and Knapp, P.A. Analyses of intrinsic water-use efficiency indicate performance differences of ponderosa pine and Douglas-fir in response to CO2 enrichment. Journal of Biogeography 42:144-155.
2013 Maxwell, J.T., Ortegren, J.T., Knapp, P.A. and Soulé, P.T. Tropical cyclones and drought amelioration in the Gulf and Southeastern Coastal United States. Journal of Climate 26:8440-8452.
2013 Maxwell, J.T., Knapp, P.A. and Ortegren, J.T. Influence of the Atlantic multidecadal oscillation on tupelo honey production from AD 1800-2010. Agricultural and Forest Meteorology 174-175:129-134.
2013 Knapp, P.A., Soulé, P.T. and Maxwell, J.T. Mountain pine beetle selectivity in old-growth ponderosa pine forests, Montana, USA. Ecology and Evolution 3:1141-1148.
2013 Soulé, P.T. and Knapp P.A. Radial growth rates of two co-occurring coniferous trees in the Northern Rockies during the past century. Journal of Arid Environments94:87-95.
2012 Knapp, P.A. and Hadley, K.S. A 300-Year History of Pacific Northwest  Windstorms  Inferred from Tree Rings.  Global and Planetary Change 92-93:257-266.
2012 Maxwell, J.T. and Knapp, P.A.   Reconstructed Tupelo-Honey Yield in Northwest Florida Inferred from Nyssa Ogeche Tree-Ring Data: 1850–2009. Agriculture, Ecosystems & Environment 149:100-108.
2012 Maxwell, J.T., Soulé P.T., Ortegren, J.T. and Knapp, P.A. Drought-busting tropical cyclones in the southeastern Atlantic United States: 1950–2008.Annals of the Association of American Geographers 102:259-275.
2011 Knapp, P.A. and Soulé, P.T. Reconstructing annual area burned in the Northern Rockies, USA: AD 1626-2008. Geophysical Research Letters Vol. 38, L17402, doi: 10.1029/2011GL048119.
2011 Hadley, K.S. and Knapp, P.A. Detection of high-wind events using tree-ring data.Canadian Journal of Forest Research 41:1121–1129.
2011 Soulé, P.T. and Knapp, P.A. Radial growth and increased water-use efficiency for ponderosa pine trees in three regions in the western United States.The Professional Geographer 63(3):1-13.
2011 Ortegren, J.T., Knapp, P.A., Maxwell, J.T., Tyminski, W.P. and Soulé, P.T. Ocean-atmosphere influences on low-frequency warm-season drought variability in the Gulf Coast and Southeastern U.S.A.Journal of Applied Meteorology and Climatology 50:1177–1186.
2011 Knapp, P.A. and Hadley, K.S. Lewis and Clarks’ Tempest: The Perfect Storm of November, 1805, Oregon, USA.The Holocene 21:693-697.
2011 Knapp, P.A. and Soulé, P.T. Increasing water-use efficiency and age-specific growth responses of old-growth ponderosa pine trees in the Northern Rockies. Global Change Biology 17:631-641.