PIE LTER marsh vegetation species composition and elevation along nine transects in 2021

Salt and brackish marsh vegetation distribution was documented using cover classes (modified Braun-Blanquet) on individual plots along 9 transects in the Plum Island Estuary.  The plots were also surveyed for elevation rel mNAVD88 using RTK GPS . The plots and transects had been surveyed for vegetation and elevation in 2001.  The re-survey is designed to monitor changes in species composition and marsh elevation across a broad spatial scale over the previous 20 years.  The survey will also serve as a baseline for future marsh monitoring work with UAVs.