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A modification of DeLury method to abalone fishery.
Copyright policy )Analysis using a modified DeLury model to represent daily variation of the catchability coefficient was undertaken. The data utilized were from abalone Haliotis discus hannai fisheryof Kisakata, Akita prefecture in July 1985 and 1986.A multiplier for the catchability coefficient was expressed in a nonlinear term based on the ratio of operating hours spent for catching abalone to the total fishing hours. The exponent of the nonlinear term, additional parameter to DeLury model, was evaluated by mutliple regression coefficient. Results of the estimates were as follows; abundance is about 3-4t, the catchability coefficient is about 3×10-4h-1, and the daily fishing rate is 3-4%.
Microsoft Academic Graph classification: Abalone Fishery Fishing Haliotis discus biology.organism_classification biology Linear regression
Aquatic Science
Aquatic Science
Microsoft Academic Graph classification: Abalone Fishery Fishing Haliotis discus biology.organism_classification biology Linear regression
Analysis using a modified DeLury model to represent daily variation of the catchability coefficient was undertaken. The data utilized were from abalone Haliotis discus hannai fisheryof Kisakata, Akita prefecture in July 1985 and 1986.A multiplier for the catchability coefficient was expressed in a nonlinear term based on the ratio of operating hours spent for catching abalone to the total fishing hours. The exponent of the nonlinear term, additional parameter to DeLury model, was evaluated by mutliple regression coefficient. Results of the estimates were as follows; abundance is about 3-4t, the catchability coefficient is about 3×10-4h-1, and the daily fishing rate is 3-4%.