Urban soil carbon and nitrogen converge at a continental scale

Tara L.E. Trammell, Diane E. Pataki, Richard V. Pouyat, Peter M. Groffman, Carl Rosier, Neil Bettez, Jeannine Cavender-Bares, Morgan J. Grove, Sharon J. Hall, James Heffernan, Sarah E. Hobbie, Jennifer L. Morse, Christopher Neill, Meredith Steele