. Bulletin. Natural history; Natural history. Aug. 1981 McNuRNEY & Dreier: Creel Survey 595 ed cruising a lake area by boat at high speed while counting boat and shore fishermen. The clerk worked a total of about 270, 8-hour days in the 1973-1974 period by working 6 days followed by 2 days off. During the 1974-1975 period the clerk worked 4 days and then was off for 4 consecutive days. Schedules were design- ed to divide counts in each area equally among days of the week and hours of the day in each 3-inonth creel period. The months were grouped for seasonal sum- maries so that December, J
. Bulletin. Natural history; Natural history. Aug. 1981 McNuRNEY & Dreier: Creel Survey 595 ed cruising a lake area by boat at high speed while counting boat and shore fishermen. The clerk worked a total of about 270, 8-hour days in the 1973-1974 period by working 6 days followed by 2 days off. During the 1974-1975 period the clerk worked 4 days and then was off for 4 consecutive days. Schedules were design- ed to divide counts in each area equally among days of the week and hours of the day in each 3-inonth creel period. The months were grouped for seasonal sum- maries so that December, January, and February represented winter; March, April, and May represented spring; June, July, and August represented summer; and September, October, and November represented autumn. The logic and ac- ceptability of such seasonal divisions is supported by the findings of Malvestuto et al. (1978). Fisherman contacts included inter- views with the fishermen and examina- tions of their catches. During each inter- view the creel clerk recorded the type of fishing, the principal species sought, the distance traveled to the lake, as well as background data detailing date and loca- tion in the lake. The catch was examined and the number and (in 1974 only) total weight of each species were reported. The data were processed on an IBM 360/75 computer using SAS procedures (Barr et al. 1976). Seasonal summaries were produced. Fishing effort in the seasonal sum- maries was calculated entirely from fast counts. The predicted fishing effort in man-hours was defined as the average number of fishermen in each, hourly count in a particular category multiplied by the number of fishable hours per day, then multiplied by the number of days in a particular month. Fishable hours used in this study were 12 h/day during spring, 15 h/day during summer, 12 h/day dur- ing autumn, and 9 h/day during winter. The result was a compilation of fishing MIDDLE ARM (heated) 790 ocres. Fig, 1 —The three cree
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