Wet scrub-shrub habitat (or wet thicket) is one type of shrubland habitat that is declining
in the northeastern United States. Wet thickets provide important habitat for a variety of
species including some birds that are Species of Greatest Conservation Need (SGCN) and
included in Pennsylvania’s State Wildlife Action Plan (SWAP). There is currently little
information on the extent of naturally-occurring wet thicket habitat in Pennsylvania and
only a coarse classification of palustrine shrublands exist. Understanding the extent and
types of wet thicket habitat is an important component of conserving and managing these
habitats and in protecting priority wildlife species that utilize them. The overall goal of
this study was to gain a better understanding of the species composition and distribution
of wet thicket habitat in Pennsylvania. Specific objectives were to: 1) identify sites in
Pennsylvania that have wet thicket characteristics, 2) collect quantitative data on the plant
species composition of wet thicket sites, and 3) use vegetation data to refine the existing
plant community classification for wet thicket habitat in Pennsylvania.