Ecological objective Mitigate effects of human induced alterations Identify alteration sources Describe unaltered system Deficits = impact Mitigation measures
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
Fallfish White sucker Common shiner Longnose dace E blacknose dace Tessellated darter Yellow perch Pumpkinseed American eel Target Community Other Bain & Meixler 2000
Survey 6
Velocity distribution in HMU’s Rapid Glide Backwater Run
pool riffle rapid FALLFISH Presence (76%)Beta BOULDER1.95 SHADING-1.07 DEPTH 0-25 cm-1.76 VELOCITY 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 cm/s1.06 RUN-0.57 High abundance (60%) Overhanging vegetation-0.97
Cwsa
Hydrological criteria setting CUT-curves
Target habitograph