Evidence details
rebecca.killalea@canberra.edu.au on 21 Jan 2022
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Study
- Citation
- Bonneau, J., Fletcher, T. D., Costelloe, J. F., Poelsma, P. J., James, R. B., & Burns, M. J. (2020). The hydrologic, water quality and flow regime performance of a bioretention basin in Melbourne, Australia. Urban Water Journal.
- Study description
- The hydrology and water quality of a bioretention basin was modelled to assess the effectiveness of these systems at reducing peak flows and pollutant loads. The study found that peak flows and concentrations of TSS, TP and TN during rain events were lowered by the bioretention basin studied.
Response
- Cause term/trajectory
-
Habitat (physical alteration) - other
- Cause description
- Bioretention basin
- Effect term/trajectory
-
Water quality - nutrients (phosphorus)
(Decrease)
- Effect description
- TP
- Response measure type
- Mean difference
- Statistical significance
- p value < 0.01
- Documentation
- Section 3.4 (pages 310, 311)
- Response measure description
- TP concentration was reduced by an average of 84% (+/- 10%) between inflow and outflow of bioretention basin
Design
- Source data
- Field
- Study type
- Observation
- Study design
- After impact only
- Number of independent control or reference sampling units
- 1
- Sample size used in analysis
- 13
- Design description
- 13 rainfall events used in analysis.
Context
- Climate
- Temperate
- Country
- Australia
- Habitat
- Artificial
- Spatial extent
- Other
- Temporal extent
- Years
- Context description
- Spatial extent: basin catchment (approx 33ha peri urban catchment)