Leaf phenology, fecundity, and biomass allocation of the invasive shrub Lonicera maackii (Rupr.) maxim in contrasting light environments /
The invasive Lonicera maackii (Amur honeysuckle) is a woody shrub that dominates the
landscape of the Midwest. My objective was to evaluate how leaf physiological and
morphological characters relate to biomass allocation and fecundity patterns of L.
maackii. Specifically, I investigated the plasticity of L. maackii’s photosynthetic and
biomass allocation patterns across a light gradient. Individual shrubs were selected in
open (N=5), forest edge (N=23), and forest interior habitats (N=24) in southwestern Ohio.
Gas exchange measurements were made on a sub-sample of shrubs throughout the 2003
growing season to evaluate physiological performance and leaf nitrogen content. All
shrubs were harvested at the end of the season to assess biomass allocation and fruit
production. In most cases, open-grown shrubs outperformed interior/edge shrubs, which
performed similarly. Although edge- and interior- grown shrubs were found to be
significant sources of propagules, open-grown shrubs should be targeted for control due
to unusually high fecundity.
Kim J. Brown
Assistant Professor of Environmental and Plant Biology
School Location:USA - Ohio
Source Type:Master's Thesis
Keywords:honeysuckles leaves invasive plants plant biomass gas exchange in ohio
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