Soil strength in two freshwater marshes after increased nutrient availability: Field nutrient addition experiments from 2009-04-15 to 2018-04-26

Soil shear strength measurements were collected from two isolated freshwater marshes (Joyce Wildlife Management Area, an anchored marsh; Salvador Wildlife Management Area, a floating marsh) over 10 years after nitrogen (N) and phosphorous (P) additions were annually applied to the surface in spring. Porewater data was also measured at both sites.