| Summary: | Thesis (M.S.) University of Alaska Fairbanks, 1981 Methods of improving accuracy and efficiency of creel census estimates were tested during the summers of 1979 and 1980 on the grayling (Thymallus arcticus) fishery of the upper Chena River. Roving counts of fishermen accurately (within 10%) reflected angler use. Incomplete trip catch-per-unit-effort estimates obtained from a roving creel census were free from sampling bias. Stratification (weekends vs. weekdays) resulted in a twofold increase in precision of use estimates. A two-stage sampling design (time periods within days) improved efficiency of sampling. Motivations and values of interior Alaskan anglers were evaluated using survey questionnaires. Aspects of the fishing experience not related to catching fish, such as companionship, outdoor enjoyment, and relaxation, were primary motivations for most (94%) anglers. The catch-related motivations were also important to a large portion (63%) of anglers. The upper Chena River fishery had many attributes which, when taken together, provided satisfactory fishing experiences to a wide range of angler types. Alaska Department of Fish and Game Alaska Cooperative Fishery Research Unit
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