TY - RPRT TI - Assessing the sources and magnitude of diurnal nitrate variability in the San Joaquin River (California) with an in situ optical nitrate sensor and dual nitrate isotopes AU - Brian A. Pellerin AU - Bryan D. Downing AU - Carol Kendall AU - Randy A. Dahlgren AU - Tamara E.C. Kraus AU - John Franco Saraceno AU - Robert G. M. Spencer AU - Brian A. Bergamaschi PY - 2009 DO - 10.1111/j.1365-2427.2008.02111.x UR - https://pubs.usgs.gov/publication/70032841 ID - 70032841 ER -