Dissertation/Thesis Abstract

Shade Tolerance and Physiological Response to Light Regime of the Invasive Species Lonicera maackii (Amur honeysuckle)
by Wright, Jessica L., M.S., Southern Illinois University at Edwardsville, 2015, 46; 1597639
Abstract (Summary)

Lonicera maackii is an invasive woody shrub currently present at high densities in many Midwestern successional forests. Lonicera maackii has been observed to inhabit a broad range of light environments and colonizes both high and low quality habitat. Previous research produced evidence of higher reproductive rates with increasing light. The results of current research, addressed in this work, demonstrate that although L. maackii has been touted to prefer a high-light environment, it is capable of acclimating to low light without a loss in photosynthetic rate. Lonicera maackii demonstrates higher aboveground biomass accumulation as the duration of light availability increases, demonstrating acclimation to overall light regime rather than higher light intensity. Despite physiological acclimation to high light, L. maackii employs a strategy of long-term light acquisition in full-sun, forest edges, and canopy gaps rather than higher photosynthetic rates. These findings show that reducing season-long light availability should inhibit rapid growth, biomass acclimation, and reproductive potential.

Indexing (document details)
Advisor: Schulz, Kurt E.
Commitee: Barry, Kelly, Esselman, Elizabeth J.
School: Southern Illinois University at Edwardsville
Department: Biological Sciences
School Location: United States -- Illinois
Source: MAI 55/01M(E), Masters Abstracts International
Subjects: Biology, Plant biology, Ecology
Keywords: Honeysuckle, Invasive species, Photosynthesis, Plant ecology, Restoration
Publication Number: 1597639
ISBN: 978-1-339-01096-0
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