Bee bee tree (Tetradium daniellii) acclimation to low light and invasive potential in mature forests
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Bee bee trees (Tetradium daniellii) are native to Korea and on Pennsylvania’s invasive species watch list. Sixty germinant bee bee tree seedlings were grown in the Steinman Plant Growth Facility over the summer-fall 2017 under three light levels simulating a gap center (14% full sun), gap edge (2%), and shaded understory (1%) to quantify their acclimation to low light and their invasive potential in forests. Seedlings were harvested and separated into component parts. Basal diameter, number of leaves, number of leaflets, total leaf area, stem length, and component masses were measured. Gap center trees had higher mass (leaf, stem, shoot), while gap edge trees were taller with greater leaf area and responded dramatically to a small increase in light compared to the understory. The results follow typical sun/shade growth patterns and strongly suggest bee bee tree would be able to invade most forest environments.
Poster presented at the 2018 Closer Look Research Fair at Franklin and Marshall College