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Evaluation and Refinement of Design Criteria <br />Response Variables <br />Fish population and community <br />- relative abundance of native and nonnative fish species <br />- age/stage-specific responses between years for native and nonnative fish species <br />- native and nonnative fish reproduction <br />- relative abundance and composition of fish food organisms <br />- food habits <br />- growth rates <br />Fish Food Organism and Water Quality <br />- macroinvertebrate quantity <br />- macroinvertebrate species and size composition (quality to native fishes) <br />- dissolved oxygen, etc. <br />Physical Parameters <br />- geomorphology <br />- topography <br />- flows, discharge <br />- area flooded <br />- depth <br />- volume <br />Vegetation <br />- species <br />- quantity <br />- area covered <br />Contaminants <br />- concentration <br />Evaluation Desi ethods <br />Fish. Species. All life stages of listed and native fishes will be collected from designated <br />depression and terrace wetlands, as well as main channel habitats (Table 2). Collections will begin <br />in the spring to monitor distribution of adults and larvae in designated wetland and main channel <br />habitats. Sampling will begin immediately following peak discharge and continue until terrace <br />habitats are dewatered. Following dewatering of terrace habitats, sampling will continue to track <br />growth rates for native fish in main channel backwaters in the vicinity of designated sites. <br />15