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Distribution and Dynamics of the Invasive Native Hay-Scented Fern

Published online by Cambridge University Press:  20 January 2017

Songlin Fei ,
Peter Gould ,
Melanie Kaeser  and
Kim Steiner
Songlin Fei*
Affiliation:
Department of Forestry, University of Kentucky, 204 T. P. Cooper Building, Lexington, KY 40546
Peter Gould
Affiliation:
US Forest Service, Pacific Northwest Research Station, 3625 93rd Avenue SW, Olympia, WA 98512
Melanie Kaeser
Affiliation:
Joseph W. Jones Ecological Research Center at Ichauway, 3988 Jones Center Drive, Newton, GA 39870
Kim Steiner
Affiliation:
School of Forest Resources, The Pennsylvania State University, 301 Forest Resources Building, University Park, PA 16802
*
Corresponding author's E-mail: [email protected]
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Abstract

The spread and dominance of the invasive native hay-scented fern in the understory is one of the most significant changes that has affected the forest ecosystems in the northeastern United States in the last century. We studied changes in the distribution and dynamics of hay-scented fern at a large scale over a 10-yr period in Pennsylvania. The study included 56 stands covering 1,009 ha in two ecoregions. Hay-scented fern was more widely distributed and occurred at higher densities in the Allegheny Plateau ecoregion vs. the Ridge and Valley. Hay-scented fern abundance was positively associated with overstory red maple abundance in both ecoregions. After overstory removal, the density and distribution of hay-scented fern tended to increase and remain at elevated levels in stands that were not treated with herbicide. Herbicide treatments resulted in temporary reductions in fern densities and created a “window of opportunity” for the establishment of tree regeneration.

Keywords

Hay-scented fern, Dennstaedtia punctilobula (Michx.) Moorered maple, Acer rubrum LInvasive species dynamicsherbicideregenerationharvest
Type
Weed Biology and Ecology
Information
Weed Science , Volume 58 , Issue 4 , December 2010 , pp. 408 - 412
Copyright
Copyright © Weed Science Society of America 

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