Are temperate mature forests buffered from invasive lianas?

Journal of the Torrey Botanical Society
By:  and 



Mature and old-growth forests are often thought to be buffered against invasive species due to low levels of light and infrequent disturbance. Lianas (woody vines) and other climbing plants are also known to exhibit lower densities in older forests. As part of a larger survey of the lianas of the southern Lake Michigan region in mature and old-growth forests, the level of infestation by invasive lianas was evaluated. The only invasive liana detected in these surveys was Celastrus orbiculatus Thunb. (Celastraceae). Although this species had only attached to trees and reached the canopy in a few instances, it was present in 30% of transects surveyed, mostly as a component of the ground layer. Transects with C. orbiculatus had higher levels of soil potassium and higher liana richness than transects without. In contrast, transects with the native C. scandens had higher pH, sand content, and soil magnesium and lower organic matter compared to transects where it was absent. Celastrus orbiculatus appears to be a generalist liana since it often occurs with native lianas. Celastrus orbiculatus poses a substantial threat to mature forests as it will persist in the understory until a canopy gap or other disturbance provides the light and supports necessary for it to ascend to the canopy and damage tree species. As a result, these forests should be monitored by land managers so that C. orbiculatus eradication can occur while invasions are at low densities and restricted to the ground layer.
Publication type Article
Publication Subtype Journal Article
Title Are temperate mature forests buffered from invasive lianas?
Series title Journal of the Torrey Botanical Society
DOI 10.3159/10-RA-055.1
Volume 138
Issue 1
Year Published 2011
Language English
Publisher Torrey Botanical Society
Publisher location Lawrence, KS
Contributing office(s) Great Lakes Science Center
Description 8 p.
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Journal of the Torrey Botanical Society
First page 85
Last page 92
Country United States
State Indiana;Michigan;Illinois
Other Geospatial Lake Michigan
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