For this project, I employed stratigraphic analysis of sediment from a tidal marsh along the Hudson River, in Rockland County, New York, in order to construct a high-resolution paleoecological record of this ecosystem, particularly to illustrate its history of resilience in spite of contaminations caused by industry and invasive species. This research stemmed from plans to build a desalination plant directly adjacent to these marshlands, which would have resulted in habitat destruction; oversalination and chemical pollution; and disturbances from excessive vibration, light, and noise.