Mary Anne Sword Sayer

Research Plant Physiologist
2500 Shreveport Highway
Pineville, LA 71360
Phone: 318-473-7275

Current Research

Of primary interest is to understand seasonal and long-term ecophysiological relationships among above-ground (i.e., photosynthesis, canopy light) and root/soil attributes (i.e., plant available water, seasonal root carbohydrate relations) that regulate loblolly and longleaf pine production. Crown physiology, leaf area dynamics, root production and distribution, and tree growth are studied in response to stand environment and silvicultural practices to determine how environmental variables such as prolonged drought and management tools such as prescribed fire control soil resource availability, carbon fixation and allocation, and forest sustainability.


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

Featured Publications and Products


Research Highlights

Tailoring Prescribed Fire for the Private Landowner (2014)
SRS-2014-139 The fate of the Range-Wide Conservation Plan for Longleaf Pine will be determined by private landowners' willingness to commit to longleaf pine as a species of choice. Research is being conducted to tailor prescribed fire so that growth losses are not a routine cost of repeated burning.

Tailoring Prescribed Fire to Benefit Private Landowners and Longleaf Pine Restoration Efforts (2019)
SRS-2019-45 Strides to restore fire-adapted longleaf pine ecosystems depend on private landowner buy-in. Often landowner objectives demand more than longleaf survival and ecosystem restoration; they also require an acceptable rate of wood production. Maximizing growth of young longleaf pine requires rapid regrowth of scorched foliage to sustain normal carbon fixation and allocation.

R&D Affiliations
Research Topics
External Resources
  • The sites listed below are third-party sites which the Forest Service has provided for reference only.
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