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~ ~. <br />Data Storage and Retrieval <br />The MANAGE data based management system developed by the Western <br />Energy and Land Use Team (WELUT) in Fort Collins, Colorado was used for <br />the project. This system provides storage, retrieval and manipulation <br />of large volumes of data. In addition, data analysis capability was <br />integrated into the MANAGE system by integrating certain features of the <br />IMSL (International Mathematical and Statistical Library) Package <br />(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. PHYSICAL; Physical and chemical data, including water and air <br />temperature, dissolved oxygen, conductivity, salinity, turbidity, <br />and stream width and depth. <br />2. CATCH-Green: Catch data for fishes; includes sample time, <br />duration, gear type, habitat, area sampled, depth, velocity, <br />and substrate for each fish species (endangered and non-en- <br />dangered) by age groups. <br />3. Rare: Includes 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 for 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 observ- <br />ations 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 />