Alberta Innovates - Water Innovation Program Forum May 24, 2018 Greg Piorkowski 1 , Madison Kobryn 1 , Suzanne Tank 2 , Rolf Vinebrooke 2 , Andy Jedrych 1 1 Water Quality Section, Alberta Agriculture and Forestry 2 Department of Biology, University of Alberta Nutrient Objectives for Small Streams in Agricultural Watersheds of Alberta
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Alberta Innovates - Water Innovation Program ForumMay 24, 2018
Greg Piorkowski1, Madison Kobryn1, Suzanne Tank2, Rolf Vinebrooke2, Andy Jedrych1
1Water Quality Section, Alberta Agriculture and Forestry2Department of Biology, University of Alberta
Nutrient Objectives for Small Streams in Agricultural Watersheds of Alberta
Project Background
•Increasing agricultural intensity leads to impaired water quality
Understand the Problem
•Agricultural BMPsreduce nutrient transport
Identify Solutions •Watershed-scale BMP
adoption needed to improve streams
Implement Solutions
•What are suitable nutrient targets for small streams in Alberta?
Achieve Outcome
Project Objectives
1 Conduct algal bioassessments and stream function assessments across Central and Southern Alberta
2 Derive regionally-applicable nutrient objectives through weighted Multiple Lines of Evidence (MLoE) approach
3 Compare generalized nutrient objectives with site-specific objectives determined through in-stream water quality modelling
4 Assess the achievability of generalized and site-specific nutrient objectives through watershed-scale BMP modelling
Stressor-Response Study Design
“Stressor-response modeling estimates a relationship between N and P concentrations and a response measure that is directly or indirectly related to a designated use of the waterbody (e.g., a biological index or recreational use measure)” – USEPA