Long -term variation in catch of Spanish mackerel (Scomberomorus niphonius ) related to environmental change in Korean waters

Abstract

),and oceanic condition in Korean waters were analyzed using 40 years of time-series data from 1971－2010.In the 1990s, oceanic conditions around the Korean peninsula shifted to awarmer regime with higher SST(sea surface temperature). The totalcatch of Spanish mackerelin Korean waters increased dramatically sincethe early 2000s, and main fishing ground form into South Sea in winter season from December to January.From the results of correlation analysis, we found asignificant relationship between the Spanish mackerelcatch and environmentalfactor such as SST , common mackereland anchovy catch in Korean waters.Keywords: Spanish mackerel, Korean waters, Catch, Increase, Oceanic conditions, Warmer regime