TY - RPRT TI - Recent, widespread nitrate decreases may be linked to persistent dissolved organic carbon increases in headwater streams recovering from past acidic deposition AU - Kevin Alexander Ryan AU - Gregory B. Lawrence PY - 2024 DO - 10.1016/j.scitotenv.2023.167646 UR - https://pubs.usgs.gov/publication/70249964 ID - 70249964 ER -