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 (nitrogen) (Decrease)
Effect description
Dissolved nitrogen and total nitrogen were significantly reduced in the fall by 71% and 74% respectively in the presence of an active leaf removal program. The program also resulted in significant removal during Spring for both TN (52%) and DN (44%).
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