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Mary Anne Sword Sayer, PhD

Research Plant Physiologist

Southern Research Station

0000-0001-9480-1519

mary.sword@usda.gov

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Treesearch Publications

Mary Anne Sword Sayer, Michael C. Tyree, Michael A. Blazier, Joshua P. Adams, Brett T. Wolfe. 2024. Eastern and Western Loblolly Pine Sources in the Western Gulf Coastal Plain Region—Root System Observations
John Willis, Don C. Bragg, Jeffery B. Cannon, Kamal J. K. Gandhi, Kathryn R. Kidd, Adam D. Polinko, Joshua J. Puhlick, Daniel Saenz, Mary Anne Sword Sayer, Christopher Schalk, Andrew B. Self, Courtney M. Siegert, J. Morgan Varner. 2024. Assessing the potential impact of retaining native off‐site tree species in woodland restoration
Mary Anne Sword Sayer, Shi-Jean Susana Sung. 2022. Linkage between longleaf pine seedling morphology and grass stage emergence
Norman J. I Cone, Joshua P. Adams, Michael A. Blazier, Mary Anne Sword Sayer, Michael C. Tyree. 2022. The effect of drought on loblolly pine (Pinus taeda) photosynthesis and whether thinning or genetic entry can improve plantation drought resilience
John K. Mensah, Mary Anne Sword Sayer, Ryan L. Nadel, Shrijana Duwadi, Zhaofei Fan, Emily Carter, Lori G. Eckhardt. 2022. Effect of Leptographium terebrantis on foliage, new root dynamics, and stemwood growth in a loblolly pine (Pinus taeda L.) plantation
N.J. Cone, M.A. Blazier, J.P. Adams, Mary Anne Sword Sayer, M.C. Tyree. 2022. Effect of the systemic neonicotinoid insecticide dinotefuran on leaf-level photosynthesis in loblolly pine (Pinus taeda)
John K. Mensah, Mary Anne Sword Sayer, Ryan L. Nadel, George Matusick, Zhaofei Fan, Emily Carter, Lori G. Eckhardt. 2021. Leptographium terebrantis inoculation and associated crown symptoms and tree mortality in Pinus taeda
Anthony Caprio, Wayne Clatterbuck, Corli Coetsee, James D. Haywood, Sarah E. Hobbie, William A. Hoffmann, John Kush, Tom Lewis, W. Keith Moser, Steven T. Overby, William A. Patterson, Kabir G. Peay, Peter B. Reich, Casey Ryan, Mary Anne Sword Sayer, Bryant C. Scharenbroch, Tania Schoennagel, Gabriel Reuben Smith, Kirsten Stephan, Chris Swanston, Monica G. Turner, J. Morgan Varner, Robert B. Jackson, Adam F. A. Pellegrini, Tyler Refsland, Colin Averill, César Terrer, A. Carla Staver, Dale Brockway. 2021. Decadal changes in fire frequencies shift tree communities and functional traits
Shi-Jean Susana Sung, Mary Anne Sword Sayer, Daniel Leduc, James D. Haywood. 2020. Is planting stocktype critical to long-term field performance of longleaf pine?
Mary Anne Sword Sayer, Michael C. Tyree, Brian M. Rudd. 2020. Optimum prescribed fire conditions for foliage regrowth among longleaf pine seedlings
John K. Mensah, Mary Anne Sword Sayer, Ryan L. Nadel, George Matusick, Lori G. Eckhardt. 2020. Physiological response of Pinus taeda L. trees to stem inoculation with Leptographium terebrantis
Mary Anne Sword Sayer, Michael C. Tyree, Eric Kuehler, John K. Jackson, Dylan N. Dillaway. 2020. Physiological mechanisms of foliage recovery after spring or fall crown scorch in young longleaf pine (Pinus palustris Mill.)
Mary Anne Sword Sayer, Michael C. Tyree, Dylan N. Dillaway, Brian M. Rudd. 2018. Foliage re-establishment of Pinus palustris Mill. saplings after spring or fall prescribed fire
Stephanie H. Laseter, James Vose, Jim M. Guldin, Don C. Bragg, Marty Spetich, Tara L. Keyser, Katherine Elliott, Mary Anne Sword Sayer, Shi-Jean Susana Sung. 2018. Experimental forests of the Southern Research Station: highlights of foundational silviculture studies
Mary Anne Sword Sayer, Shi-Jean Susana Sung, Daniel Leduc, James Tule, Nicholas G. Muir, Phil Dougherty. 2018. Understanding the fertilization and irrigation response of seed orchard loblolly pine
Shi-Jean Susana Sung, Mary Anne Sword Sayer, Daniel Leduc, James Tule, Phil Dougherty, Nicholas G. Muir. 2018. Understanding carbon sink-source relationships in seed orchard loblolly pine ramets
Mary Anne Sword Sayer, Michael C. Tyree, Michael A. Blazier, Shi-Jean Susana Sung, Lori G. Eckhardt. 2016. Is natural defense capacity correlated with allocation of dry mass to the stem in loblolly pine?
Daniel Leduc, Shi-Jean Susana Sung, Dale Brockway, Mary Anne Sword Sayer. 2016. Weather effects on the success of longleaf pine cone crops
Dave Haywood, Mary Anne Sword Sayer, Shi-Jean Susana Sung. 2015. Comparison of planted loblolly, longleaf, and slash pine development through 10 growing seasons in central Louisiana--an argument for longleaf pine
Shi-Jean Susana Sung, Dave Haywood, Mary Anne Sword Sayer. 2015. Current-year flush and needle development in longleaf pine saplings after a dormant season prescribed fire
John K. Jackson, Dylan N. Dillaway, Michael C. Tyree, Mary Anne Sword Sayer. 2015. Effects of spring prescribed fire on short-term, leaf-level photosynthesis and water use efficiency in longleaf pine
Dave Haywood, Shi-Jean Susana Sung, Mary Anne Sword Sayer. 2015. Soil physical effects on longleaf pine performance in the West Gulf Coastal Plain
Shi-Jean Susana Sung, Stan Zarnoch, Dave Haywood, Daniel Leduc, Mary Anne Sword Sayer. 2013. Developmental dynamics of longleaf pine seedling flushes and needles
Mary Anne Sword Sayer. 2013. Surface soil root distribution and possible interaction with site factors in a young longleaf pine stand
Dave Haywood, Shi-Jean Susana Sung, Mary Anne Sword Sayer. 2012. Copper Root Pruning and Container Cavity Size Influence Longleaf Pine Growth through Five Growing Seasons
Shi-Jean Susana Sung, Daniel Leduc, Dave Haywood, Thomas L. Eberhardt, Mary Anne Sword Sayer, Stan Zarnoch. 2012. Methodology and preliminary results of evaluating stem displacement and assessing root system architecture of longleaf pine saplings
Mary Anne Sword Sayer, Dave Haywood. 2012. Surface soil root response to season of repeated fire in a young longleaf pine plantation
Bradley S. Osbon, Michael A. Blazier, Michael C. Tyree, Mary Anne Sword Sayer. 2012. Whole-canopy gas exchange among four elite loblolly pine seed sources planted in the western gulf region
Wilson G. Hood, Michael C. Tyree, Dylan N. Dillaway, Michael A. Blazier, Mary Anne Sword Sayer. 2012. Whole canopy gas exchange among elite loblolly pine families subjected to drought stress
Jeffery Goelz, Brian Strom, James Barnett, Mary Anne Sword Sayer. 2012. Guidelines for regenerating southern pine beetle spots
Mary Anne Sword Sayer, Shi-Jean Susana Sung, Dave Haywood. 2011. Longleaf Pine Root System Development and Seedling Quality in Response to Copper Root Pruning and Cavity Size
Lori Eckhardt, Mary Anne Sword Sayer, Don Imm. 2010. State of pine decline in the southeastern United States
Mary Anne Sword Sayer, Eric Kuehler. 2010. Influence of repeated prescribed fire and herbicide application on the fine root biomass of young longleaf pine
Shi-Jean Susana Sung, Dave Haywood, Mary Anne Sword Sayer, Kris Connor, Andy Scott. 2010. Effects of container cavity size and copper coating on field performance of container-grown longleaf pine seedlings
Shi-Jean Susana Sung, Dave Haywood, Stan Zarnoch, Mary Anne Sword Sayer. 2009. Long-Term Container Effects on Root System Architecture of Longleaf Pine
Mary Anne Sword Sayer, Dave Haywood. 2009. Fire and longleaf pine physiology - Does timing affect response? In: Proc
Mary Anne Sword Sayer, L.G. Eckhardt, Emily Carter. 2009. Nutrition challenges of longleaf pine in the southeast
Mary Anne Sword Sayer, James D. Haywood, Shi-Jean Susana Sung. 2009. Cavity size and copper root pruning affect production and establishment of container-grown longleaf pine seedlings
Mary Anne Sword Sayer. 2007. Repeated fire effects on soil physical properties in two young longleaf pine stands on the west gulf coastal plain
Eric Kuehler, Mary Anne Sword Sayer, C. Dan Andries. 2006. How does fire affect longleaf pine roots carbohydrates, foliar nutrients, and sapling growth?
Mary Anne Sword Sayer, J.C.G. Goelz, James D. Haywood. 2006. Effects of prescribed fire on production of foliage by sapling longleaf pine
James D. Haywood, Mary Anne Sword Sayer, Allan E. Tiarks. 2006. Intensive management of loblolly pine during establishment influences nutrition and productivity through 15 growing seasons
Mary Anne Sword Sayer, Eric Kuehler. 2005. Crown physiology and growth of sapling longleaf pine after fire
Mary Anne Sword Sayer, James D. Haywood. 2005. Fine root production and carbohydrate concentrations of mature longleaf pine (Pinus palustris P. Mill.) as affected by season of prescribed fire and drought
Mary Anne Sword Sayer, John Brissette, James Barnett. 2005. Root growth and hydraulic conductivity of southern pine seedlings in response to soil temperature and water availability after planting
Zhenmin Tang, Mary Anne Sword Sayer, Jim L. Chambers, James Barnett. 2004. Interactive effects of fertilization and throughfall exclusion on the physiological responses and whole-tree carbon uptake of mature loblolly pine
Mary Anne Sword Sayer, Jeffery Goelz, Jim L. Chambers, Zhenmin Tang, T.J. Dean, James D. Haywood, Daniel Leduc. 2004. Long-term trends in loblolly pine productivity and stand characteristics in response to thinning and fertilization in the West Gulf region
Eric Kuehler, Mary Anne Sword Sayer, James D. Haywood, C. Dan Andries. 2004. Long-Term Effects of Season of Prescribed Burn on the Fine-Root Growth, Root Carbohydrates, and Foliar Dynamics of Mature Longleaf Pine
James D. Haywood, Mary Anne Sword Sayer, Finis L. Harris. 2004. Fire Monitoring: Effects of Scorch in Louisiana's Pine Forests
Kenneth E. Ward, Mary Anne Sword Sayer. 2004. Susceptibility of Potted Sweetgum Seedlings to Insect Herbivore Damage as Influenced by Fertilization
Zhenmin Tang, Jim L. Chambers, Mary Anne Sword Sayer, Shufang Yu, James Barnett. 2004. Reapplication of Silvicultural Treatments Impacts Phenology and Photosynthetic Gas Exchange of Loblolly Pine
Zhenmin Tang, Jim L. Chambers, Mary Anne Sword Sayer, James Barnett. 2003. Seasonal photosynthesis and water relations of juvenile loblolly pine relative to stand density and canopy position
Mary Anne Sword Sayer, Allan E. Tiarks. 2002. Local Soils Information Needed to Define the Root Zone in Process Models on the Gulf Coastal Plain
Richard W. Tinus, Mary Anne Sword Sayer, James Barnett. 2002. Prevention of Cold Damage to Container-Grown Longleaf Pine Roots
Mary Anne Sword Sayer, Eric Kuehler. 2000. Above- and below-ground growth of longleaf pine in response to three prescribed burning regimes
James P. Bamett, Allan E. Tiarks, Mary Anne Sword Sayer. 2000. Sustaining Productivity of Planted Forests in the Gulf Coast Region
Mary Anne Sword Sayer, Eric Kuehler, Zhenmin Tang. 2000. Seasonal Fine Root Carbohydrate Relations of Plantation Loblolly Pine After Thinning
Mary Anne Sword Sayer, James D. Haywood. 1999. Effects of Crown Scorch on Longleaf Pine Fine Roots
Eric Kuehler, Mary Anne Sword Sayer, C. Dan Andries. 1999. Seasonal Fine-Root Carbohydrate and Growth Relations of Plantation Loblolly Pine After Thinning and Fertilization
Mary Anne Sword Sayer, Allan E. Tiarks, Dave Haywood. 1998. Establishment treatments affect the relationships among nutrition, productivity and competing vegetation of loblolly pine saplings on a Gulf Coastal Plain site
Mary Anne Sword Sayer, James D. Haywood, C. Dan Andries. 1998. Seasonal Lateral Root Growth of Juvenile Loblolly Pine After Thinning and Fertilization on Gulf Coastal Plain Site
Mary Anne Sword Sayer, Jim L. Chambers, Dennis A. Gravatt, James D. Haywood, James Barnett. 1998. Ecophysiological Response of Managed Loblolly Pine to Changes in Stand Environment
Mary Anne Sword Sayer. 1995. Root-zone temperature and water availability affect early root growth of planted longleaf pine
Mary Anne Sword Sayer, Harold E. Garrett. 1994. Boric acid-phenolic relationships within the Pinus echinata-Pisolithus tinctorius ectomycorrhizal association
Mary Anne Sword Sayer, Joan P. Smith, Harold E. Garrett. 1991. Effect of Glomus spp. on the growth of eastern cottonwood cuttings

University of Missouri, Ph.D., Forestry, 1991
University of Minnesota, M.S., Forestry, 1986
South Dakota State University, B.S., Biology, 1983

Last updated March 10, 2026

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