An Evaluation of the Invasive Potential of Beach Vitex ( Vitex rotundifolia )

نویسنده

  • Charles A. Gresham
چکیده

An Evaluation of the Invasive Potential of Beach Vitex (Vitex rotundifolia) Charles A. Gresham and Amber Neal The Belle W. Baruch Institute of Coastal Ecology and Forest Science, Clemson University P. O. Box 596, Georgetown, SC 29442 ABSTRACT This study was conducted to determine if the introduced woody plant Beach Vitex, Vitex rotundifolia (Verbenaceae), (BV), has the potential to displace native beach dune species from front dunes. Nine BV communities on front dunes and control dunes without BV in Georgetown County South Carolina were inventoried. BV accounted for 84% of the stems in BV communities; sea oats, Uniola paniculata (Poaceae), and beach grass, Ammophila breviligulata (Poaceae), contributed 2.8% of the stems. Seaward BV runners grew an average of 188 cm in 2004 and the average 2004 seed crop was estimated to be 10,921 seed / m. In greenhouse experiments, sweet corn, Zea mays (Poaceae), seed germination and seedling growth were reduced by watering with leachate of a nursery pot containing BV compared to watering with leachate from a pot containing potting media only. BV appears to have the potential to be an aggressive invader and deserves monitoring.

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تاریخ انتشار 2004