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Data Storage, Retrieval and Analysis <br />, The MANAGE data base management system developed by the Western <br />Energy and Land Use Team (WELUT) in Fort Collins, Colorado was adapted <br />for the project. This system provided storage, retrieval and mani- <br />pulation of the large volumes of data generated by the project. In <br />addition, data analysis capability was integrated into the MANAGE system <br />by utilizing some elements of the IMSL (International Mathematical and <br />Statistical Library) Package (Shumate et al. 1981). <br />Field data were organized into four data sets in the Vernal data <br />base. Data sheets and the following data sets were developed: <br />1. PHYSICALS Physical and chemical data, including water <br />and air temperature, dissolved oxygen, conductivity, <br />salinity, turbidity, and stream width and depth. <br />2. CATCH: Catch data for fishes; included sample time, duration, <br />gear type, habitat, area sampled, depth, velocity, and <br />substrate for each fish species (endangered and nonendangered) <br />by age groups. <br />3. RARE: Included sample time, duration, gear type, habitat, <br />area sampled, depth, velocity, substrate type, sex, length, <br />weight, tag size and number, and macroscopic external parasite <br />load for each endangered or threatened fish captured. <br />4. RADIO: Movement data for radiotagged fish, including observa- <br />tion time, distances of movements, type of movement, depth, <br />velocity and substrate of preferred habitat, water flow and <br />temperature. <br />MANAGE accepts alphanumeric codes. Fish species and other observa- <br />tions were coded on the data sheets as letters rather than numerals. As <br />an example, the substrate 'sand' was coded as 'SA'. This facilitated <br />field recording. Numeric information was also entered directly. <br />16