Abstract
ABSTRACT A 3-yr study was conducted to determine effects from cutting shrubs that were shading a population of Xyris tennesseensis Kral inhabiting a calcareous seepage fen of the Ridge and Valley Ecoregion. Shrubs were cut to ground level on small plots and Xyris flowering, ramet numbers (a ramet is defined as a leaf-producing stem) and seedling numbers were monitored during three post-treatment seasons. Floral visitation was also documented to determine if shrub cutting increased the likelihood of floral visits by insects that might pollinate flowers. In addition, the seed bank of the site was described and quantified. Shrub cutting significantly increased flowering of Xyris on the site, but only for the first two seasons: by the third season flowering declined, likely caused by competition from other herbaceous species responding to the increased light levels. Shrub cutting also significantly increased seedling production, but no significant increase in the number of Xyris ramets was found. Floral visit...
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