The habitat suitability index of skipjack based on sea surface temperature in the western- central Pacific Ocean
GUO Ai, CHEN Xin-jun
1. College of Marine Technology ＆ Science, Shanghai Ocean University, Shanghai 201306, China; 2. The Key Laboratory of Shanghai Education Commission for Oceanic Fisheries Resources Exploitation, Shanghai Ocean University, Shanghai 201306, China ;3. The Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai Ocean University, Shanghai 201306, China
Abstract: The habitat suitability index （HSI） was estimated using the relative ratio of actual fishing times to maximum fishing times with monthly high yield according to the catch data and number of fishing in purse seine and the data of sea surface temperature （SST） in the western -central Pacific Ocean （20°N -25°S, 120°E -185°E） from 1990 to 2001. Firstly, three methods were used to establish the HSI model. Then, the models were tested and compared by overlaying the monthly catch and HSI spatial distribution to select the optimum HSI model. Finally, the optimum HSI model was used to forecast fishing ground based on the SST data in 2003. The results showed that the yield was mainly obtained in the area with HSI 〉 0.4 estimated by the model A, the area with HSI 〉 O. 6 esti- mated by the model B and the area with HSI 〉 0.8 estimated by model C. Therefore, the model C was the best which may be consistent with the skipjack distribution. The HSI in 2003 was estimated by model C, and the area with high yield was distributed in the region with HSI 〉 0.8, which further demonstrated the feasibility of forecasting fishing ground using the HSI model.
郭爱, 陈新军. 基于表温的中西太平洋鲣栖息地适应指数的研究[J]. 大连海洋大学学报, 2008, 23(6): 455-461.
GUO Ai, CHEN Xin-jun. The habitat suitability index of skipjack based on sea surface temperature in the western- central Pacific Ocean. Journal of Dalian Ocean University, 2008, 23(6): 455-461.
2008, Vol. 23 
