Landscape Studies in Shenandoah National Park Assessment of vegetation communities in relation to environmental gradients (J. Young, G. Fleming, and P. Townsend) Landforms and ecological land units (J. Young) Identification and mapping of outcrops (J. Young) Stand vulnerability of eastern hemlock to hemlock wooly adelgid (J. Young) Habitat modeling for protection of at-risk plants in eastern US National Parks (J. Young, F. van manen, C. Thatcher)   GIS data archive (data developed for research projects available for download)