TY - RPRT TI - Carbon and nitrogen fixation differ between successional stages of biological soil crusts in the Colorado Plateau and Chihuahuan Desert AU - D.C. Housman AU - H.H. Powers AU - A.D. Collins AU - J. Belnap PY - 2006 DO - 10.1016/j.jaridenv.2005.11.014 UR - https://pubs.usgs.gov/publication/70028451 ID - 70028451 ER -