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<br />::,=, <br /> <br />. FEa 05 . ~l' <br /> <br />,-, -:-0 <br /> <br />disch~rge8. <br /> <br />~-4.lc. There is no significant relationship between the <br />rate of stranding of trout and the rate of change in daily <br />fluctuating discharges. <br /> <br />~-4.1d. There is no significant relationship between <br />stranding of trout and their spawning activities. <br /> <br />~-4.2. There is no significant relationship between <br />behavioral activity of rainbow trout and the magnitude of daily <br />discharge fluctuations, daily minimum discharges and rate of <br />change of fluctuating discharges. <br /> <br />Justification: The behavior patterns of trout determine <br />where they will be at any point in time. This includes <br />teedinq, spawning, or movinq within their tc~itory. If the <br />environment in which they live is constantly changing, they <br />must aet up SOme behavior pattern to adjust to it. If they <br />don't, they could be unsuccesstul in any ot their <br />activities, thus reducing potential success for the overall <br />population The present operations of Glen Canyon Dam create <br />a highly variable environment. Trout adjustment to this <br />fluctuating environment has not been quantified. Results of <br />GCES Phase I suggested that some fluctuations in flow might <br />benefit trout by increasing food availability under <br />different flow levels resultinq from steady and fluctuating <br />discharges. <br /> <br />Inforaation Heeds: Some data to test hypothesis H.-4.1 will <br />be used to test this hypothe.is. Also data will be <br />collected on the degree and timing of movement of trout <br />(e.g., with radio tracking), and reproductive (see H.,-4.1) <br />and feeding activities. Tbese data will be augmented with <br />those collected under H.,-? 2, H.,-? J and H.,-7. 4 as they are <br />related to the availability of food resources. Additional <br />controlled experiments will be conducted in the Glen Canyon <br />sluiceways on the eftects of different discharge regimes on <br />food resources of trout , and trout feeding, qrowth and <br />survivorship. <br /> <br />The secondary hypotheses to be tested under this research <br />proqralll are: <br /> <br />H.-4.2a. There is no significant relationship between the <br />behavioral activities of trout and the magnitude in daily <br />discharqe fluctuations. <br /> <br />~-4.2b. There is no siqnificant relationship between the <br />behavioral activities ot trout and the magnitude of daily minimum <br />discharges. <br /> <br />8 <br />