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Ecological objective Mitigate effects of human induced alterations Identify alteration sources Describe unaltered system Deficits = impact Mitigation measures.

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Presentation on theme: "Ecological objective Mitigate effects of human induced alterations Identify alteration sources Describe unaltered system Deficits = impact Mitigation measures."— Presentation transcript:

1 Ecological objective Mitigate effects of human induced alterations Identify alteration sources Describe unaltered system Deficits = impact Mitigation measures

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3 Define unaltered state Habitat reference Target fish community Spatial habitat distribution Habitat time series analysis CUT curves, RVA Species/life-stage habitat needs Unaltered flow

4 Fallfish White sucker Common shiner Longnose dace E blacknose dace Tessellated darter Yellow perch Pumpkinseed American eel Target Community Other Bain & Meixler 2000

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6 Survey 6

7 Velocity distribution in HMU’s Rapid Glide Backwater Run

8 pool riffle rapid FALLFISH Presence (76%)Beta BOULDER1.95 SHADING-1.07 DEPTH 0-25 cm-1.76 VELOCITY 45-60 cm/s1.06 RUN-0.57 High abundance (60%) Overhanging vegetation-0.97 pool riffle rapid FALLFISH Presence (76%)Beta BOULDER1.95 SHADING-1.07 DEPTH 0-25 cm-1.76 VELOCITY 45-60 cm/s1.06 RUN-0.57 High abundance (60%) Overhanging vegetation-0.97

9 Cwsa

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11 Hydrological criteria setting CUT-curves

12 Target habitograph


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