Journal
FOREST ECOLOGY AND MANAGEMENT
Volume 324, Issue -, Pages 101-108Publisher
ELSEVIER
DOI: 10.1016/j.foreco.2014.04.013
Keywords
Invasive plants; Chinese privet; Plant communities; Tree growth; Reinvasion
Categories
Funding
- USDA Forest Service, Special Technology Development Program
- USDA Forest Service, Southern Research Station's research work unit, SRS 4552, Insects, Diseases, and Invasive Plants
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An invasive shrub, Chinese privet (Ligustrum sinense Lour.), was removed from heavily infested riparian forests in the Georgia Piedmont in 2005 by mulching machine or chainsaw felling. Subsequent herbicide treatment eliminated almost all privet by 2007. Recovery of plant communities, return of Chinese privet, and canopy tree growth were measured on removal plots and heavily invaded control plots in 2012 approximately five years after complete removal of privet. Plant communities were also measured on three 'desired future condition' plots which were never heavily infested with privet. These areas provided a goal condition for plant communities on removal plots. Approximately 7% of mulched plots and 3% of felling plots were re-infested by Chinese privet. In contrast, non-privet herbaceous plants covered 70% of mulched plots and 60% of felling plots compared to only 20% of untreated control plots and 70% in desired plots. Both mulched and felled plots had more plant species than the control plots, and mulched plots had more species than felled plots. Analysis of similarity (ANOSIM) and non-metric multidimensional scaling (NMS) ordination indicated that control, removal, and desired future condition plots had three distinct plant communities but the methods used to remove privet did not result in different communities. There was no difference in growth of canopy trees in removal and control plots five years after removal. Removing Chinese privet from riparian areas is beneficial to plant communities, promoting biodiversity and secondary succession while progressing toward a desired condition regardless of the method used to remove it. (C) 2014 Elsevier B.V. All rights reserved.
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