Morgan, Eric .
Stand dynamics and spatial analysis of an invasion by Phellodendron amurense Rupr. in an eastern North American Forest.
The non-native ornamental tree Phellodendron amurense Rupr., Amur corktree, has escaped into the urban and suburban forests of several northeastern states. This invasion by P. amurense provided an opportunity to examine the subsequent changes in the forest composition that took place since the invasion began. Through the removal of 278 individual trees of P. amurense, tree ring analysis allowed a re-creation of the forest over the forty-six years since the species first arrived at the site. This analysis shows that P. amurense demonstrates the ability to invade additional areas and, over time increase both its relative density and relative dominance. An analysis of both living and standing dead individual trees shows P. amurense appears to be continuing its gradual increased influence over the forest. To better understand the patterns by which P. amurense is invading, a spatial analysis of all P. amurense and non P. amurense trees was conducted to look for patterns which could help understand the way in which the species is spreading. Through these analyses it can be shown that P. amurense has the ability to spread throughout a forest, regardless of proximity to older trees representing a seed source. It is also shown that these trees succeed within the clearings created within the surrounding forest at both small and large scales.
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1 - Farmingdale State College, 2350 Broadhollow Rd. , Farmingdale, NY, 11735, USA
Presentation Type: Oral Paper:Papers for Sections
Date: Monday, July 9th, 2012
Time: 11:15 AM