Benthic particulate carbon, nitrogen and phosphorus data from the Kuparuk River, near Toolik Field Station, Alaska, summers 1991-present.

Benthic samples were analyzed for particulate carbon, nitrogen, and phosphorus since 1991. Phosphorus addition has occurred since 1983; station sites are relative distance from the original 1983 phosphorus dripper. Stations include sites in a reference, recovery, and fertilized reach. Reaches were defined based on the location of phosphorous addition (see methods). Phosphoric acid is added to the stream to increase the soluble reactive phosphorus by 0.32 uM. Three sampling dates occurred each summer; once in June prior to the start of fertilization and once each in July and August.