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<br />AC <br /> <br />sites may be selected for demonstration projects in which adaptive <br />management techniques can be implemented to determine other possible <br />factors that could be limiting recruitment. The information obtained from <br />pilot studies at demonstration sites will provide useful information for <br />selecting other future sites for restoration. <br /> <br />Phase I Objectives: <br /> <br />1. Study potential effects that selenium levels in the Colorado River <br />may have on various life stages of razorback sucker in sieu; <br />determine if selenium levels at this site negatively affect <br />reproductive success of razorback sucker. Monitor selenium levels <br />in other biotic (i.e., invertebrates and dietary constituents of <br />razorback sucker) and abiotic (i.e., water, sediment) components <br />at the site. Provide water inlet and outlet structures and fish <br />screens at the site to contain fish within the site. <br /> <br />Phase II Objectives: <br /> <br />1. Provide mainstem flow connections to currently blocked historical <br />off-channel habitats, e.g., secondary and tertiary channels. <br />Monitor water levels and area flooded (using aerial photos); <br />monitor short- and long-term changes in flood plain and adjoining <br />channel geomorphology. <br /> <br />2. Study effects of non-native fishes on young razorback sucker in a <br />simulated flood plain environment. <br /> <br />IV. Description of past performance on this or similar project. <br /> <br />In the Upper Colorado River, there has been little research and <br />management activities aimed at reconnecting historic flood plain <br />habitats to the mainstem river to'benefit endangered fishes. <br />Mor.eover, from the literature, it appears that there has been few <br />attempts to restore historic flood plain habitat in' other river . <br />systems. Therefore, many of the strategies proposed for'restoring <br />flood plain habitats in the Upper Colorado River Basin will be <br />untested; initially, some may not work, but certainly an adaptive <br />management approach must be used to determine those strategies <br />that will be best suited for the particular site and its <br />configuration. . <br /> <br />In the Green River, Old Charley Wash (Wood's Bottom) was <br />reconnected to the mainstem and is a pilot project currently <br />underway to test the hypothesis regarding flooded bottom land <br />restoration for razorback sucker. Wydoski and Wick (1994) have <br />developed an issue paper, "Enhancement of Flooded Bottomlands and <br />Other Habitats for Recovery of Endangered Fishes in the Upper <br />Colorado River Basin", that describes various selected strategies <br />for habitat enhancement of flooded bottomlands that might benefit <br /> <br />2 <br />