The spatial pattern relationship between SST and chlorophyll-a in Lemuru Bleeker, 1853 catches in Bali Strait, Indonesia

Abstract

Lemuru Bleeker, 1853 is one of the most commonly found species in pelagic fisheries in Bali Strait. Data from the MODIS (Moderate Resolution Imaging Spectroradiometer) Terra satellite remote sensing, collected over a period of nine years from 2007 to 2015, were used to observe the spatial relationship between lemuru catches, Sea Surface Temperature (SST), and Chlorophyll-a (chl-a) concentration in the Bali Strait, Indonesia. The purpose of the study was to provide information about the spatial relationship between lemuru catches and both marine environmental parameters. Linear correlation analysis was carried out to determine the level of relationship with the restriction of the analysis of long-term and seasonal relationships. The results showed that during the year of observation, lemuru catches showed a declining trend. Lemuru catches showed a correlation with SST and chl-a concentration, as clearly indicated by high responses in DJF (December-January-February) and SON (September-October-November) months and unclear responses in MAM (March-April-Mei) months and JJA (June-July-August) months. In DJF, the spatial relationship between both marine environmental parameters and lemuru catches was high in the central part of the strait and in SON in the northwestern part of the strait.