A level of activity on the landscape (e g., mining, development, agriculture) that results in an unacceptable shift from functional to impaired conditions

A level of activity on the landscape (e.g., mining, development, agriculture) that results in an unacceptable shift from functional to impaired conditions.

• A level of activity on the landscape (e.g., mining, development, agriculture) that results in an unacceptable shift from functional to impaired conditions.

• Non-linear change point thresholds.

• Abrupt change in community structure

• Linear functional thresholds.

• Cross-over to “impaired” conditions
• Loss of a smallmouth bass fishery
• WVSCI < 68

Continuous predictions of stream conditions based on key landscape indicators.

• Continuous predictions of stream conditions based on key landscape indicators.

• Measurement of impact vulnerability.

• Identification of restoration priorities.

• Projecting downstream response to a proposed development activity.

Increased WQ PC1, conductivity and associated dissolved parameters

• Increased WQ PC1, conductivity and associated dissolved parameters

• Decreased sensitive taxa (esp. Mayflies)

• No effect on habitat quality or complexity

Decreased habitat complexity

• Decreased habitat complexity

• Increased conductivity and WQ PC1

• Decreased sensitive taxa and increased tolerant taxa