Evidence details
rebecca.killalea@canberra.edu.au on 09 Apr 2022
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Study
- Citation
- Thomas, K. E., Lazor, R., Chambers, P. A., & Yates, A. G. (2018). Land-use practices influence nutrient concentrations of southwestern Ontario streams. Canadian Water Resources Journal / Revue canadienne des ressources hydriques.
- Study description
- This study investigated the link between land use and nutrient concentrations in inflow streams to two large lakes. The study investigated links between agriculture and urban activity on nitrogen and phosphorus loads in the streams.
Response
- Cause term/trajectory
-
Land use/land cover - other
(Decrease)
- Cause description
- Pervious headwater buffer
- Effect term/trajectory
-
Water quality - nutrients (nitrogen)
(Increase)
- Effect description
- Total dissolved nitrogen and Total nitrogen
- Response measure type
- Ordination
- Documentation
- Table 5
- Response measure description
- Ordinary least squares regression analyses. TDN and pervious headwater buffer (coef: -0.9788, p=0.0001), TN and pervious headwater buffer (coef: -1.0745, p<0.0001)
Design
- Source data
- Field
- Study type
- Observation
- Study design
- Spatial gradient
- Number of independent control or reference sampling units
- 29
- Sample size used in analysis
- 29
- Design description
- Regressions were performed on mean nutrient concentrations collected from May to Nov for each site.
Context
- Climate
- Temperate
- Country
- Canada
- Habitat
- Stream/river
- Spatial extent
- Drainage basin
- Temporal extent
- Months
- Context description
- Water sampling from May to November 2012 approx every 3 weeks.