Saddle nodal plot soil analyses

During the summer of 1991, soil samples were collected from directly adjacent to the permanent plots on the Niwot Ridge Saddle. These permanent plots included 12 nodal plots that had been established in the early 1970s by Pat Webber and Diane Ebert-May. Results of analyses performed on soil samples collected at those plots during 1971 were reported in May (1973, 1976). The 1991 analyses were intended to repeat the earlier measures for comparative purposes. Soil cores (0-5 cm) were removed from the field using a 7.5-cm diameter corer.