| 英文摘要 |
The catch and effort data of swordfish and striped marlin for the Taiwanese tuna longline fishery in the Pacific Ocean were collected for 2001-2011. GAMs with environmental factors included are applied to standardize the CPUEs of swordfish and striped marlin. For swordfish, The GAMs results showed that sea level anomalies, meridional wind speed, SST, SOI, PDO index and zonal wind speed were important factors in explaining the variance in CPUE in the North Pacific, and chlorophyll a concentration, SST, sea level anomalies and wind speed were important in the South Pacific. For striped marlin, meridional wind speed, SST, PDO index and SOI were important factors in explaining the variance in CPUE in the North Pacific, and SST, chlorophyll a concentration, SOI, sea level anomalies and meridional wind speed were important in the South Pacific. These environmental factors related to ENSO and PDO revealed that swordfish and striped marlin are in a higher CPUE level as PDO index positive and SOI negative. |
