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Surviving the revolution, easier than withstanding human use and abuse
Date:8/11/2008

al variation than revealed by previous research," say Fitzgerald and Loeb. However, alien species are spreading in forest canopy gaps in the past 80 years, the number of non-native and invasive plants has tripled. These plants include wineberry, various honeysuckles, rambler rose and oriental bittersweet. In just 20 years, garlic mustard spread from one forest to become the dominant, non-native species in all the Park's forests.

"Considering the results of this research on the long term ecology of the Inwood Park forest, the Natural Resources Group could avoid the problem observed by Spanish-born, American poet and philosopher George Santayana: 'Those who cannot remember the past are condemned to repeat it'," says Robert E. Loeb, professor of biology, Penn State Dubois campus.

The researchers suggest that beside long term monitoring, regular monitoring to assess how the new shrubs, forest canopy and other plantings are doing is essential to ensure the forest survives. They recommend creating a grid system to follow restoration and allow comparisons. Also recommended is monitoring of the effects of herbicides in controlling invasive species. Soil restoration and maintenance of new plantings are also important, not just in the forest, but also in the marsh.


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Contact: A'ndrea Elyse Messer
aem1@psu.edu
814-865-9481
Penn State
Source:Eurekalert

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