Hawley MA
- Demography of the Northern Pitcher Plant (Sarracenia purpurea). 1997-2012
- The Food Web of Sarracenia Purpurea. 1998-2004
- Food Web of Sarracenia Purpurea in United States and Canada since 1999. 1999-2011
- Seed Dispersal and Seedling Establishment of Sarracenia Purpurea at Hawley Bog, MA 1998-1999. 1998-2001