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.. , . . . , .. 00520 44 Expected Products/Deliverables: . Annual data delivery Trip reports providing area estimates of vegetation and general description of status of snails at Vaseys Paradise. . Contribution to SCORE report Project B.2. Continued Research and Development - Aquatic Productivity, Organic Mass Balance, and Food Web Linkage Studies FUNDING HISTORY Fiscal year 2002 2003 2004 2005 2006 Outside GCMRC Science/Labor N/A N/A 160,000 220,000 100,000 Logistics Field Support N/A N/A 40,000 40,000 50,000 Project Related Travelffraininl: - - - - 5,000 Operations/Supplies N/A N/A 18,000 25,000 0 GCMRC Salaries N/A N/A 30,000 30,000 109,015 Project Subtotal - - - - 264,015 DOl Customer Burden (6 to 17%) - - - - 35,055 Proiect Total N/A N/A 248,000 315,000 299,070 % Total Outsourced N/A N/A -79% -81% 42% Principal Investigators: Kennedy (USGS/GCMRC) and others to be determined. Statement of Problem: River systems are fueled by different sources of organic material that originate from a combination of allochthonous (organic debris from terrestrial environments) and autochthon us production (algae, and macrophytes). These organics serve as the fundamental food source and linkage between aquatic invertebrates and higher level consumers such as fish and waterfowl. The proportion of these organic sources and their overall quantity and quality varies between and within different river systems. Since the closure of Glen Canyon Dam some of the coarser larger organics (woody debris) supplied to the Colorado River are sequestered in Lake Powell. Owing to increased water clarity conditions algal production has become very extensive in the upper river section; however downstream periodic suspended sediment and . organic debris supplied from tributaries causes a decline in algal production. The aquatic GCMRC FY2006 Annual Work Plan (Draft, June to, 2005)