| 英文摘要 |
Theinterannual and seasonal variations of the sea surface temperature anomaly (SSTA) and the upwelling area in the Taiwan straits were studied using remotesatellite data between 2000 and 2013. It was revealed that while the SSTA wasrelatively low lead to the upwelling area expanded in summer-autumn, whichaffected the abundance (in terms of the CPUE) of Uroteuthis chinensis locatedin the waters surrounding the Peng Hu islands. Good correspondence was observedbetween the variation of the upwelling area and the CPUE of U. chinensis over alarge extent around the Peng Hu islands. Furthermore, the ocean environment ofthe Taiwan straits showed a dramatic change between normal conditions, El Niño and La Niña events during 2008 and 2010. The upwelling area and the CPUE of U.chinensis during La Niña were markedly greater compared to during the El Niño event. Analysis of the environmental variations of the Taiwan strait inassociation with the CPUE of U. chinensis suggested that in years when the SSTAwas relatively lower (2000~2001, 2010~2012 ), the upwelling area was larger,causing the CPUE of U. chinensis to increase. This could be the reason that alarge increase in upwelling causes the SST to decrease, leading to an increasein the available U. chinensis for feeding and their aggregation. |
