Evidence details

rebecca.killalea@canberra.edu.au on 02 Mar 2022
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Study

Citation
Valtanen, M., Sillanpää, N., & Setälä, H. (2014). The Effects of Urbanization on Runoff Pollutant Concentrations, Loadings and Their Seasonal Patterns Under Cold Climate. Water, Air, & Soil Pollution.
Study description
This study examined the effects of different land use types and imperviousness on storm water runoff pollutant loads.

Response

Cause term/trajectory
Surface runoff - impervious surfaces (Increase)
Cause description
Impervious surfaces. 3 catchments were assessed with differing imperviousness - Low: 19%, Intermediate: 62%, High: 89%
Effect term/trajectory
Water quality - organic matter
Effect description
No correlation between imperviousness and total organic carbon was identified with lowest concentration of TOC identified in the intermediate catchment and highest in the High catchment.
Response measure type
Spearman correlation coefficient

Design

Source data
Field
Study type
Observation
Study design
After impact only
Number of independent control or reference sampling units
3
Sample size used in analysis
24
Design description
Data was collected seasonally (every 3 months) at 3 locations over 2 years.

Context

Climate
Cold (continental)
Country
Finland
Habitat
Artificial
Spatial extent
Other
Temporal extent
Years
Context description
Spatial extent - 3 locations in a city