Evidence details
rebecca.killalea@canberra.edu.au on 09 Apr 2022
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Study
- Citation
- Hobbie, S. E., Finlay, J. C., Janke, B. D., Nidzgorski, D. A., Millet, D. B., & Baker, L. A. (2017). Contrasting nitrogen and phosphorus budgets in urban watersheds and implications for managing urban water pollution. Proceedings of the National Academy of Sciences.
- Study description
- This study investigated the inputs and outputs of phosphorus and nitrogen into a watershed in Minnesota. The study looked at the dominant methods of input, retention of nutrients within an urban catchment and the output to the downstream waterways.
Response
- Cause term/trajectory
-
Sediment quality - nutrients (phosphorus)
(Increase)
- Cause description
- Phosphorus input to the highly urbanised watershed
- Effect term/trajectory
-
Water quality - nutrients (phosphorus)
(Increase)
- Effect description
- Phosphorus output via stormwater drains. The study found that phosphorus retention in the watershed was small (average 22%) and the P output was positively correlated with the P input.
- Response measure type
- Other
- Response measure description
- Response reported significant. Response method and statistical analyses unclear.
Design
- Source data
- Other
- Study type
- Model
- Study design
- Other
- Number of independent control or reference sampling units
- 7
- Sample size used in analysis
- 7
- Design description
- Source data varies for different inputs. 7 different watersheds analysed.
Context
- Climate
- Cold (continental)
- Country
- United States
- Habitat
- Stream/river
- Spatial extent
- Drainage basin
- Temporal extent
- Other