|The Morakot typhoon which occurred in August 8 2009 has brought vast amount of rain water and caused many fish farms breaching in Kaoping area. The reared grouper and other economic fish species therefore have flew into the sea largely. In order to realize the extent of impact on fish assemblage and fisheries resources of southwestern waters and coral reef off Taiwan influenced by this typhoon, this study investigated the fish compositions of pole and line, longline, gill net, bull trawl, and shrimp beam trawl operated in southwestern waters off Taiwan?during Jan. to Nov. in 2010. Also the diving observations on fish fauna of coral reef in Kenting area were carried out. These data are used to compare with those of historic data before Morakot typhoon for analyzing the impact level.?
The total catch amount of coastal fisheries operatedin southwestern waters off Taiwan has no significant influence caused by the Morakot typhoon. But some species such as anchovy larvae their catch amounts maybe reduce. A total of 14 reared fish species about 200 to300 million individuals have escaped into the coastal areas from fish farms.?Although many people could capture these escaped fish in coastal area after Morakot typhoon, only 4 species were recorded from fishing data in this study. From analyzing and comparing the fish composition data before and after Morakot typhoon, some areas such as Linbian and Jiadong have short term change on fishing components of coastal fisheries particular in escaping reared fish species amount. The major influence fish species were grouper spp. which seemed to affect these areas until Spring 2010. The Sparus sarba, abundance in Cieding coastal during autumn and winter seasons, its population whether would be increased due to large amount of escaping reared fish and lasting several years is still needed to further monitor continuously.?From the results of scuba diving observations, it indicated that the fish fauna of coral reef in Kenting area has been influenced up to Spring 2010. Some reared species such as Epinephelus coioides has not been observed after Spring 2010.