AIMS Shane Creek (Konza Prairie) Anion Data (AIMS_GP_SHN_ANIO)

This resource includes anion (ANIO) data collected from Shane Creek within the Konza Prairie Biological Station. These data were collected in support of the sampling goals of the Aquatic Intermittency effects on Microbiomes in Streams (AIMS) Project. This study took place in Shane Creek (434 ha) at the Konza Prairie Biological Station, a long term ecological research station that has been in operation since 1980. Shane’s Creek is annually cattle-grazed and burned every three years. Konza is located in the Flint Hills of northern Kansas. In 2023, the outlet of the stream wet up in March and dried down in July; in 2024, the outlet of the stream wet up in March and dried down in September. Average annual precipitation for this site is 35.62 inches. We collected samples every ~3 weeks from 2021 to 2024 at the outlet of our watershed (SHM01, approach 1) and seasonally at seven distributed sites (approach 2) between 2021- 2024. Samples were filtered with a 0.45um PES filter and frozen until analysis. Aqueous concentrations of anions were determined using an IC-3000 IC system (Dionex, Sunnyvale, CA) equipped with Dionex AERS 500 suppressor (2 mm, Thermo Scientific) and Dionex AS auto-sampler (Thermo Scientific). A Dionex IonPac AS15 column (2 mm × 50 mm, Thermo Scientific) with a guard column Dionex IonPac AG15 (2 mm × 50 mm, Thermo Scientific) was used to separate anions using a mobile phase of 38 mM KOH and a flow rate of 0.3 mL/min. The column temperature is 30 °C. Chromeleon software 7.1 is used for system control. Final data tab shows average of triplicates collected in the field and st dev of triplicates. Any NO3 values below 0.01 mg/L are below the lowest standard used in lab analysis and should be interpreted with caution. The final data tab includes QA/QC’d averaged data for fluoride, chloride, nitrite, bromide, nitrate, phosphate, and sulfate in ppm with standard deviations. If the sample is below detection (BD), it is denoted as that and highlighted pink. Average NAs indicate analytes were not run or that samples were missing. NA’s in the standard deviations columns could indicate that those samples were not run or that only replicate was able to be analyzed.