Evidence details
rebecca.killalea@canberra.edu.au on 14 Mar 2022
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Study
- Citation
- Selbig, W. R. (2016). Evaluation of leaf removal as a means to reduce nutrient concentrations and loads in urban stormwater. Science of The Total Environment.
- Study description
- This study investigated the contribution of leaf litter to nutrient loads in urban stormwater. The study investigated the effectiveness of leaf litter removal in reducing nitrogen and phosphorus loads in urban stormwater.
Response
- Cause term/trajectory
-
Plants (riparian) - other
(Decrease)
- Cause description
- Decreased leaf litter on ground due to manual leaf removal.
- Effect term/trajectory
-
Water quality - nutrients (phosphorus)
(Decrease)
- Effect description
- Dissolved phosphorus and total phosphorus were significantly reduced in the fall by 83% and 84% respectively in the presence of an active leaf removal program. The program also resulted in significant removal during Spring for both TP (45%) and DP (51%) and removal during Summer of TP (36%) (but not DP).
- Response measure type
- Other
- Statistical significance
- p<0.05
- Response measure description
- Paired-catchment design
Design
- Source data
- Field
- Study type
- Manipulation
- Study design
- Control/reference vs. treatment/impact (no before)
- Number of independent control or reference sampling units
- 1
- Number of indendent impact or treatment sampling units
- 2
- Sample size used in analysis
- 71
- Design description
- 71 paired samples - 40 during calibration phase and 31 during treatment phase
Context
- Climate
- Cold (continental)
- Country
- United States
- Habitat
- Other
- Spatial extent
- Other
- Temporal extent
- Years
- Context description
- Context - urban park in residential area