TY - RPRT TI - Comparing approaches to spatially explicit ecosystem service modeling: a case study from the San Pedro River, Arizona AU - Kenneth J. Bagstad AU - Darius J. Semmens AU - Robert Winthrop PY - 2013 DO - 10.1016/j.ecoser.2013.07.007 UR - https://pubs.usgs.gov/publication/70048482 ID - 70048482 ER -