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Title: Impacts of removing Chinese privet from riparian forests on plant communities and tree growth five years later

Author: Hudson, Jacob R.; Hanula, James L.; Horn, Scott;

Date: 2014

Source: Forest Ecology and Management 324:101–108

Publication Series: Scientific Journal (JRNL)

Description: 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.

Keywords: Invasive plants, Chinese privet, Plant communities, Tree growth, Reinvasion

Publication Notes:

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  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

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Hudson, Jacob R.; Hanula, James L.; Horn, Scott 2014. Impacts of removing Chinese privet from riparian forests on plant communities and tree growth five years later. Forest Ecology and Management 324:101–108.

 


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