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<br />1699 <br /> <br />. <br /> <br />Goal 1. Protect or improve the aquatic foodbase so that it will support <br />viable populations of desired species at higher trophic levels. <br /> <br />Se~uence <br />Order Caleoorv Research INs <br /> <br />4 <br /> <br />~ <br /> <br />RIN 1.1 What are the fundamental trophic interactions in the <br />aquatic ecosystem? <br /> <br />RIN 1.2 How are the production, composition, density, and <br />biomass of the benthic invertebrate community affected by <br />primary productivity vs. allochthonous inputs? <br /> <br />RIN 1.3 What food base criteria do other agencies use to <br />assess aquatic ecosystem health? <br /> <br />RIN 1.4 What is the current carbon budget for the Colorado <br />River ecosystem? <br /> <br />5 <br /> <br />h. <br /> <br />5 <br /> <br />h. <br /> <br />4 <br /> <br />h. <br /> <br />M.O. 1.1 Maintain or attain orimarv producers (aloae. macrophvtesl biomass and <br />communitv composition In the Glen Canyon Reach. <br /> <br />Cateoorv Core MOnltonno INs <br /> <br />6. CMIN 1.1.1 Determine and track the composition and biomass <br />of primary producers between Glen Canyon Dam and the Paria <br />River in conjunction with measurements of flow, nutrients. water <br />temperature, and light regime. <br /> <br />e'l Se~uence <br />Order Cateoorv Research INs <br />5 h. RIN 1.1.1 How are the composition and biomass of primary <br /> producers between Glen Canyon Dam and the Paria River <br /> affected by flow and water quality (Including nutrients. <br /> temperature, light regime. toxins, dissolved oxygen), and water <br /> borne diseases, or other factors. <br /> 9 h. RIN 1.1.2 What is the estimated productivity for the reach <br /> between Glen Canyon Dam and the Paria River? [Note: If the <br /> cost of obtaining this data, relative to the benefit of the <br /> information suggests the information is not worth the expense. <br /> this RIN will not be pursued.] <br />I 6 h. RIN 1.1.3 How do top-down effects (grazing and predation) on <br />r primary producers affect food base productivity? <br />5 h. RIN 1.1.4 What are the habitat characteristics between Glen <br /> Canyon Dam and the Paria River that most affect primary <br /> productivity? How are these characteristics affected by Glen <br /> <br />AHCIQ memo <br /> <br />Page 5 <br /> <br />e <br /> <br />! Formatted <br /> <br />I Formatted <br /> <br />\ Formatted <br /> <br />[ Fo......... <br /> <br />[Formatted <br /> <br />( Formatted <br /> <br />! Formatted <br /> <br />[ Formatted <br />