Impacts of Genetic Variation and Silvicultural Treatments on Loblolly Pine Water Use

Abstract

Loblolly pine (Pinus taeda) is of high ecological and economical value in the U.S. for its abundance and rapid growth. P. taeda has adapted to a wide range of sites, exhibiting considerable plasticity in its physiology and morphology. In efforts of understanding such variation, transpiration has become a major study focus for its integral role in tree growth and survival. This master’s project examined sap flux data from an established experiment where four crown ideotypes were planted at two densities. The study explored the variation in P. taeda water use between planting densities, crown ideotypes, and environmental variables. By identifying genetic variation and treatment effects, this master’s project provides recommendations for further research and insights for forest management.