Proceedings - Teaching and Learning Centre - Simon Fraser ...
Proceedings - Teaching and Learning Centre - Simon Fraser ... Proceedings - Teaching and Learning Centre - Simon Fraser ...
Fraser River Action Plan 3rd Research Workshop • Sub-basin (13) • Ecoregion (11) Site Selection • Stream Order (up to 7 orders at 1:250,000 scale) • Defined as a reach that is a 6:1 ratio of length to width • 84 strata and 2-3 sites per stratum Habitats • Erosional - Community structure (benthic invertebrates & periphyton) - Environmental characteristics • Depositional - Survival, growth & reproduction bioassays - Community structure - Environmental characteristics Page 243
Fraser River Action Plan 3rd Research Workshop Environmental Variables Known to Correlate with Benthic Invertebrate Community Structure in Lotic Systems • United Kingdom • United Kingdom (Wright et al., 1984; 1989; 1995) (Corkum & Currie, 1987; 1989) - Slope - Distance from source - Discharge category - Altitude - Mean channel width - Geology - Surface velocity - Vegetation cover - Mean substrate - Land use - Dominant particle - Water width, depth - pH, Phosphorus - Overhanging vegetation - % macrophyte cover Page 244
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<strong>Fraser</strong> River Action Plan 3rd Research Workshop<br />
• Sub-basin (13)<br />
• Ecoregion (11)<br />
Site Selection<br />
• Stream Order (up to 7 orders at 1:250,000 scale)<br />
• Defined as a reach that is a 6:1 ratio of length to width<br />
• 84 strata <strong>and</strong> 2-3 sites per stratum<br />
Habitats<br />
• Erosional<br />
- Community structure (benthic invertebrates & periphyton)<br />
- Environmental characteristics<br />
• Depositional<br />
- Survival, growth & reproduction bioassays<br />
- Community structure<br />
- Environmental characteristics<br />
Page 243
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