Evidence details

rebecca.killalea@canberra.edu.au on 16 Feb 2022

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Citation: Toor, G. S., Occhipinti, M. L., Yang, Y., Majcherek, T., Haver, D., & Oki, L. (2017). Managing urban runoff in residential neighborhoods: Nitrogen and phosphorus in lawn irrigation driven runoff. PLOS ONE.
Study description: This study investigated the transport of nitrogen and phosphorus from irrigation runoff in a residential catchment. The study looked at irrigation runoff at an outlet pipe from a residential neighbourhood to understand the concentrations of TN and TP as well as the daily fluctuations and influence of two different irrigation water sources (municipal and reclaimed water).

Cause term/trajectory: Land use/land cover - urban
Cause description: Irrigation of lawn surfaces in a residential catchment.
Effect term/trajectory: Water quality - nutrients (phosphorus)
Effect description: Concentration of phosphorus at residential stormwater outlet pipe. Phosphorus concentration was generally lower at times when municipal water was used for irrigation within the catchment and higher when reclaimed water was used for irrigation. During the study, an event was recorded which resulted in a significant increase in TP which the author suggests was due to a substantial wetting event causing particulates to be flushed off.
Response measure type: Other
Response measure description: 1 way ANOVA test specified in methods. Unclear in results.