The goal of this study was to inventory the nonnative plant populations in each of the four NPS units between 2004 and 2006 at each of the NPS vegetation mapping plots and accuracy assessment points. This report details the results of the inventory for JOFL, which took place in 2004, and ALPO, which took place in 2005-2006. This inventory will contribute to a general understanding of the nonnative plant distributions, identify what species are most prevalent, and determine which vegetation associations are most impacted by nonnative plant species. This report draws attention to survey points...

This project documents the vegetation associations of Allegheny Portage Railroad National Historic Site based on 2003 aerial photography and 2005 field sampling, and completes one of 12 basic inventory data sets for the park.