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<br />002;)81 <br /> <br />TABLE OF CONTENTS <br /> <br />TIIE STATE OF NATURAL AND CULTURAL RESOURCES IN TIIE <br />COLORADO RIVER ECOSYSTEM . . . . . . . . . . . . . . : . . . . . . .. I <br /> <br />ABSTRACT ........................................... I <br /> <br />INTRODUCTION ........................................ 4 <br />FLOW mSTORY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 4 <br />PHYSICAL RESOURCES .................................. 7 <br />Flow and Sediment Relationships ......................... 7 <br />Sediment Transport Process . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 7 <br />Sand Bar Rejuvenation ................................ 9 <br />Debris Fans and Rapids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II <br />Campsite Rejuvenation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 <br />Sediment and Cultural Sites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 <br />Sediment Management ................................ 12 <br />BIOLOGICAL RESOURCES ................................ 12 <br />Aquatic Food Base . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 <br /> <br />Fisheries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 <br />Non-native Fish .................................... 16 <br /> <br />Trout ...................................... 16 <br />Native Fish ....................................... 16 <br />Humpback Chub ............................... 19 <br />Flannelmouth Sucker and Bluehead Sucker. . . . . . . . . . . . . . . 19 <br />Speckled Dace. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 <br />Status and Management Implications ....................... 20 <br />Terrestrial Processes and Biota. .......................... 20 <br />Sand Bar Nutrient Dynamics . . . . . . . . . . . . . . . . . . . . . . . . 20 <br />Wetland and Riparian Vegetation . . . . . . . . . . . . . . . . . . . . . 20 <br />Kanab Ambersnail .............................. 21 <br />Northern Leopard Frog and Niobara ambersnail . . . . . . . . . . . 24 <br />Southwestern Willow Flycatcher ..................... 24 <br />Other Avifauna ................................ 24 <br />Conclusions and Management Implications for Biotic Resources . . . . . . 24 <br />CULTURAL RESOURCES .. _. . . . . . . . . . . . . . . . . . . . . . . ., . . . . . 27 <br />1996 Test Flow Impacts on Cultural Resources . . . . . . . . .. . . . . . . . 27 <br />Cultural Resources In 1996 and 1997 . . . . . . . . . . . . . . . . . . . . . . . 28 <br />Archaeological Sites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 <br />Ethnobotanical Resources .....;........................ 29 <br />Socio-economic Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <br />.30 <br />Economic Impacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 <br />ACKNOWLEDGMENTS . . . . . . . . . . . . . . . . . . . . . . . . . .- . . . . . . . . . 31 <br /> <br />REFERENCES .........................................32 <br />